diff --git a/.prettierrc b/.prettierrc
deleted file mode 100644
index 1ca87ab7..00000000
--- a/.prettierrc
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "singleQuote": false
-}
diff --git a/modules/AuthAPI.js b/modules/AuthAPI.js
index 1fd2064e..4cf2d99a 100644
--- a/modules/AuthAPI.js
+++ b/modules/AuthAPI.js
@@ -1,22 +1,22 @@
-const crypto = require("crypto");
-const jwt = require("jsonwebtoken");
+const crypto = require('crypto');
+const jwt = require('jsonwebtoken');
 
-const db = require("./utils/data");
-const secretKey = require("./secretKey");
+const db = require('./utils/data');
+const secretKey = require('./secretKey');
 
 function getCurrentSeconds() {
   return Math.floor(Date.now() / 1000);
 }
 
 function createTokenId() {
-  return crypto.randomBytes(16).toString("hex");
+  return crypto.randomBytes(16).toString('hex');
 }
 
 function createToken(scopes = {}) {
   return new Promise((resolve, reject) => {
     const payload = {
       jti: createTokenId(),
-      iss: "https://unpkg.com",
+      iss: 'https://unpkg.com',
       iat: getCurrentSeconds(),
       scopes
     };
@@ -24,7 +24,7 @@ function createToken(scopes = {}) {
     jwt.sign(
       payload,
       secretKey.private,
-      { algorithm: "RS256" },
+      { algorithm: 'RS256' },
       (error, token) => {
         if (error) {
           reject(error);
@@ -36,11 +36,11 @@ function createToken(scopes = {}) {
   });
 }
 
-const revokedTokensSet = "revoked-tokens";
+const revokedTokensSet = 'revoked-tokens';
 
 function verifyToken(token) {
   return new Promise((resolve, reject) => {
-    const options = { algorithms: ["RS256"] };
+    const options = { algorithms: ['RS256'] };
 
     jwt.verify(token, secretKey.public, options, (error, payload) => {
       if (error) {
diff --git a/modules/BlacklistAPI.js b/modules/BlacklistAPI.js
index 78635185..1910cd14 100644
--- a/modules/BlacklistAPI.js
+++ b/modules/BlacklistAPI.js
@@ -1,6 +1,6 @@
-const db = require("./utils/data");
+const db = require('./utils/data');
 
-const blacklistSet = "blacklisted-packages";
+const blacklistSet = 'blacklisted-packages';
 
 function addPackage(packageName) {
   return new Promise((resolve, reject) => {
diff --git a/modules/CloudflareAPI.js b/modules/CloudflareAPI.js
index d4119d54..1e05e063 100644
--- a/modules/CloudflareAPI.js
+++ b/modules/CloudflareAPI.js
@@ -1,24 +1,24 @@
-require("isomorphic-fetch");
-const invariant = require("invariant");
-const gunzip = require("gunzip-maybe");
-const ndjson = require("ndjson");
+require('isomorphic-fetch');
+const invariant = require('invariant');
+const gunzip = require('gunzip-maybe');
+const ndjson = require('ndjson');
 
-const cloudflareURL = "https://api.cloudflare.com/client/v4";
+const cloudflareURL = 'https://api.cloudflare.com/client/v4';
 const cloudflareEmail = process.env.CLOUDFLARE_EMAIL;
 const cloudflareKey = process.env.CLOUDFLARE_KEY;
 
 invariant(
   cloudflareEmail,
-  "Missing the $CLOUDFLARE_EMAIL environment variable"
+  'Missing the $CLOUDFLARE_EMAIL environment variable'
 );
 
-invariant(cloudflareKey, "Missing the $CLOUDFLARE_KEY environment variable");
+invariant(cloudflareKey, 'Missing the $CLOUDFLARE_KEY environment variable');
 
 function get(path, headers) {
   return fetch(`${cloudflareURL}${path}`, {
     headers: Object.assign({}, headers, {
-      "X-Auth-Email": cloudflareEmail,
-      "X-Auth-Key": cloudflareKey
+      'X-Auth-Email': cloudflareEmail,
+      'X-Auth-Key': cloudflareKey
     })
   });
 }
@@ -32,7 +32,7 @@ function getJSON(path, headers) {
       if (!data.success) {
         console.error(`CloudflareAPI.getJSON failed at ${path}`);
         console.error(data);
-        throw new Error("Failed to getJSON from Cloudflare");
+        throw new Error('Failed to getJSON from Cloudflare');
       }
 
       return data.result;
@@ -51,9 +51,9 @@ function reduceResults(target, values) {
   Object.keys(values).forEach(key => {
     const value = values[key];
 
-    if (typeof value === "object" && value) {
+    if (typeof value === 'object' && value) {
       target[key] = reduceResults(target[key] || {}, value);
-    } else if (typeof value === "number") {
+    } else if (typeof value === 'number') {
       target[key] = (target[key] || 0) + values[key];
     }
   });
@@ -75,7 +75,7 @@ function getZoneAnalyticsDashboard(zones, since, until) {
 
 function getJSONStream(path, headers) {
   const gzipHeaders = Object.assign({}, headers, {
-    "Accept-Encoding": "gzip"
+    'Accept-Encoding': 'gzip'
   });
 
   return get(path, gzipHeaders)
@@ -84,7 +84,7 @@ function getJSONStream(path, headers) {
 }
 
 function getLogs(zoneId, startTime, endTime, fieldsArray) {
-  const fields = fieldsArray.join(",");
+  const fields = fieldsArray.join(',');
 
   // console.log(
   //   `https://api.cloudflare.com/client/v4/zones/${zoneId}/logs/received?start=${startTime}&end=${endTime}&fields=${fields}`
diff --git a/modules/StatsAPI.js b/modules/StatsAPI.js
index 3e6d8d80..b0b1a798 100644
--- a/modules/StatsAPI.js
+++ b/modules/StatsAPI.js
@@ -1,7 +1,7 @@
-const db = require("./utils/data");
+const db = require('./utils/data');
 
-const CloudflareAPI = require("./CloudflareAPI");
-const BlacklistAPI = require("./BlacklistAPI");
+const CloudflareAPI = require('./CloudflareAPI');
+const BlacklistAPI = require('./BlacklistAPI');
 
 function prunePackages(packagesMap) {
   return Promise.all(
@@ -39,7 +39,7 @@ function createScoresMap(array) {
 
 function getScoresMap(key, n = 100) {
   return new Promise((resolve, reject) => {
-    db.zrevrange(key, 0, n, "withscores", (error, value) => {
+    db.zrevrange(key, 0, n, 'withscores', (error, value) => {
       if (error) {
         reject(error);
       } else {
@@ -141,7 +141,7 @@ function extractPublicInfo(data) {
   };
 }
 
-const DomainNames = ["unpkg.com", "npmcdn.com"];
+const DomainNames = ['unpkg.com', 'npmcdn.com'];
 
 function fetchStats(since, until) {
   return CloudflareAPI.getZones(DomainNames).then(zones => {
diff --git a/modules/__tests__/AuthAPI-test.js b/modules/__tests__/AuthAPI-test.js
index 536b1bfd..2a085df1 100644
--- a/modules/__tests__/AuthAPI-test.js
+++ b/modules/__tests__/AuthAPI-test.js
@@ -1,11 +1,11 @@
-const AuthAPI = require("../AuthAPI");
+const AuthAPI = require('../AuthAPI');
 
-describe("Auth API", () => {
+describe('Auth API', () => {
   beforeEach(done => {
     AuthAPI.removeAllRevokedTokens().then(() => done(), done);
   });
 
-  it("creates tokens with the right scopes", done => {
+  it('creates tokens with the right scopes', done => {
     const scopes = {
       blacklist: {
         add: true,
@@ -24,7 +24,7 @@ describe("Auth API", () => {
     });
   });
 
-  it("refuses to verify revoked tokens", done => {
+  it('refuses to verify revoked tokens', done => {
     const scopes = {};
 
     AuthAPI.createToken(scopes).then(token => {
diff --git a/modules/__tests__/BlacklistAPI-test.js b/modules/__tests__/BlacklistAPI-test.js
index 4d2ef48d..daa4259f 100644
--- a/modules/__tests__/BlacklistAPI-test.js
+++ b/modules/__tests__/BlacklistAPI-test.js
@@ -1,12 +1,12 @@
-const BlacklistAPI = require("../BlacklistAPI");
+const BlacklistAPI = require('../BlacklistAPI');
 
-describe("Blacklist API", () => {
+describe('Blacklist API', () => {
   beforeEach(done => {
     BlacklistAPI.removeAllPackages().then(() => done(), done);
   });
 
-  it("adds and removes packages to/from the blacklist", done => {
-    const packageName = "bad-package";
+  it('adds and removes packages to/from the blacklist', done => {
+    const packageName = 'bad-package';
 
     BlacklistAPI.addPackage(packageName).then(() => {
       BlacklistAPI.getPackages().then(packageNames => {
diff --git a/modules/__tests__/_auth-test.js b/modules/__tests__/_auth-test.js
index f90d2d1b..1bfa33b1 100644
--- a/modules/__tests__/_auth-test.js
+++ b/modules/__tests__/_auth-test.js
@@ -1,46 +1,46 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
-const withRevokedToken = require("./utils/withRevokedToken");
-const withToken = require("./utils/withToken");
+const createServer = require('../createServer');
+const withRevokedToken = require('./utils/withRevokedToken');
+const withToken = require('./utils/withToken');
 
-describe("The /_auth endpoint", () => {
+describe('The /_auth endpoint', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  describe("POST /_auth", () => {
-    it("creates a new auth token", done => {
+  describe('POST /_auth', () => {
+    it('creates a new auth token', done => {
       request(server)
-        .post("/_auth")
+        .post('/_auth')
         .end((err, res) => {
-          expect(res.body).toHaveProperty("token");
+          expect(res.body).toHaveProperty('token');
           done();
         });
     });
   });
 
-  describe("GET /_auth", () => {
-    describe("with no auth", () => {
-      it("echoes back null", done => {
+  describe('GET /_auth', () => {
+    describe('with no auth', () => {
+      it('echoes back null', done => {
         request(server)
-          .get("/_auth")
+          .get('/_auth')
           .end((err, res) => {
-            expect(res.body).toHaveProperty("auth");
+            expect(res.body).toHaveProperty('auth');
             expect(res.body.auth).toBe(null);
             done();
           });
       });
     });
 
-    describe("with a revoked auth token", () => {
-      it("echoes back null", done => {
+    describe('with a revoked auth token', () => {
+      it('echoes back null', done => {
         withRevokedToken({ some: { scope: true } }, token => {
           request(server)
-            .get("/_auth?token=" + token)
+            .get('/_auth?token=' + token)
             .end((err, res) => {
-              expect(res.body).toHaveProperty("auth");
+              expect(res.body).toHaveProperty('auth');
               expect(res.body.auth).toBe(null);
               done();
             });
@@ -48,14 +48,14 @@ describe("The /_auth endpoint", () => {
       });
     });
 
-    describe("with a valid auth token", () => {
-      it("echoes back the auth payload", done => {
+    describe('with a valid auth token', () => {
+      it('echoes back the auth payload', done => {
         withToken({ some: { scope: true } }, token => {
           request(server)
-            .get("/_auth?token=" + token)
+            .get('/_auth?token=' + token)
             .end((err, res) => {
-              expect(res.body).toHaveProperty("auth");
-              expect(typeof res.body.auth).toBe("object");
+              expect(res.body).toHaveProperty('auth');
+              expect(typeof res.body.auth).toBe('object');
               done();
             });
         });
diff --git a/modules/__tests__/_blacklist-test.js b/modules/__tests__/_blacklist-test.js
index 0e04c9a8..c00b50fd 100644
--- a/modules/__tests__/_blacklist-test.js
+++ b/modules/__tests__/_blacklist-test.js
@@ -1,22 +1,22 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
-const clearBlacklist = require("./utils/clearBlacklist");
-const withToken = require("./utils/withToken");
+const createServer = require('../createServer');
+const clearBlacklist = require('./utils/clearBlacklist');
+const withToken = require('./utils/withToken');
 
-describe("The /_blacklist endpoint", () => {
+describe('The /_blacklist endpoint', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  describe("POST /_blacklist", () => {
+  describe('POST /_blacklist', () => {
     afterEach(clearBlacklist);
 
-    describe("with no auth", () => {
-      it("is forbidden", done => {
+    describe('with no auth', () => {
+      it('is forbidden', done => {
         request(server)
-          .post("/_blacklist")
+          .post('/_blacklist')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
@@ -25,11 +25,11 @@ describe("The /_blacklist endpoint", () => {
     });
 
     describe('with the "blacklist.add" scope', () => {
-      it("can add to the blacklist", done => {
+      it('can add to the blacklist', done => {
         withToken({ blacklist: { add: true } }, token => {
           request(server)
-            .post("/_blacklist")
-            .send({ token, packageName: "bad-package" })
+            .post('/_blacklist')
+            .send({ token, packageName: 'bad-package' })
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
               expect(res.body.ok).toBe(true);
@@ -40,11 +40,11 @@ describe("The /_blacklist endpoint", () => {
     });
   });
 
-  describe("GET /_blacklist", () => {
-    describe("with no auth", () => {
-      it("is forbidden", done => {
+  describe('GET /_blacklist', () => {
+    describe('with no auth', () => {
+      it('is forbidden', done => {
         request(server)
-          .get("/_blacklist")
+          .get('/_blacklist')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
@@ -53,10 +53,10 @@ describe("The /_blacklist endpoint", () => {
     });
 
     describe('with the "blacklist.read" scope', () => {
-      it("can read the blacklist", done => {
+      it('can read the blacklist', done => {
         withToken({ blacklist: { read: true } }, token => {
           request(server)
-            .get("/_blacklist?token=" + token)
+            .get('/_blacklist?token=' + token)
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
               done();
@@ -66,11 +66,11 @@ describe("The /_blacklist endpoint", () => {
     });
   });
 
-  describe("DELETE /_blacklist/:packageName", () => {
-    describe("with no auth", () => {
-      it("is forbidden", done => {
+  describe('DELETE /_blacklist/:packageName', () => {
+    describe('with no auth', () => {
+      it('is forbidden', done => {
         request(server)
-          .delete("/_blacklist/bad-package")
+          .delete('/_blacklist/bad-package')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
@@ -79,10 +79,10 @@ describe("The /_blacklist endpoint", () => {
     });
 
     describe('with the "blacklist.remove" scope', () => {
-      it("can remove a package from the blacklist", done => {
+      it('can remove a package from the blacklist', done => {
         withToken({ blacklist: { remove: true } }, token => {
           request(server)
-            .delete("/_blacklist/bad-package")
+            .delete('/_blacklist/bad-package')
             .send({ token })
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
@@ -92,10 +92,10 @@ describe("The /_blacklist endpoint", () => {
         });
       });
 
-      it("can remove a scoped package from the blacklist", done => {
+      it('can remove a scoped package from the blacklist', done => {
         withToken({ blacklist: { remove: true } }, token => {
           request(server)
-            .delete("/_blacklist/@scope/bad-package")
+            .delete('/_blacklist/@scope/bad-package')
             .send({ token })
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
diff --git a/modules/__tests__/_publicKey-test.js b/modules/__tests__/_publicKey-test.js
index fd65fd5f..a5d318b1 100644
--- a/modules/__tests__/_publicKey-test.js
+++ b/modules/__tests__/_publicKey-test.js
@@ -1,17 +1,17 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
+const createServer = require('../createServer');
 
-describe("The /_publicKey endpoint", () => {
+describe('The /_publicKey endpoint', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  describe("GET /_publicKey", () => {
-    it("echoes the public key", done => {
+  describe('GET /_publicKey', () => {
+    it('echoes the public key', done => {
       request(server)
-        .get("/_publicKey")
+        .get('/_publicKey')
         .end((err, res) => {
           expect(res.text).toMatch(/PUBLIC KEY/);
           done();
diff --git a/modules/__tests__/api-auth-test.js b/modules/__tests__/api-auth-test.js
index fce8a7ba..2432806f 100644
--- a/modules/__tests__/api-auth-test.js
+++ b/modules/__tests__/api-auth-test.js
@@ -1,47 +1,47 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
-const withAuthHeader = require("./utils/withAuthHeader");
-const withRevokedToken = require("./utils/withRevokedToken");
-const withToken = require("./utils/withToken");
+const createServer = require('../createServer');
+const withAuthHeader = require('./utils/withAuthHeader');
+const withRevokedToken = require('./utils/withRevokedToken');
+const withToken = require('./utils/withToken');
 
-describe("The /api/auth endpoint", () => {
+describe('The /api/auth endpoint', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  describe("POST /api/auth", () => {
-    it("creates a new auth token", done => {
+  describe('POST /api/auth', () => {
+    it('creates a new auth token', done => {
       request(server)
-        .post("/api/auth")
+        .post('/api/auth')
         .end((err, res) => {
-          expect(res.body).toHaveProperty("token");
+          expect(res.body).toHaveProperty('token');
           done();
         });
     });
   });
 
-  describe("GET /api/auth", () => {
-    describe("with no auth", () => {
-      it("echoes back null", done => {
+  describe('GET /api/auth', () => {
+    describe('with no auth', () => {
+      it('echoes back null', done => {
         request(server)
-          .get("/api/auth")
+          .get('/api/auth')
           .end((err, res) => {
-            expect(res.body).toHaveProperty("auth");
+            expect(res.body).toHaveProperty('auth');
             expect(res.body.auth).toBe(null);
             done();
           });
       });
     });
 
-    describe("with a revoked auth token", () => {
-      it("echoes back null", done => {
+    describe('with a revoked auth token', () => {
+      it('echoes back null', done => {
         withRevokedToken({ some: { scope: true } }, token => {
           request(server)
-            .get("/api/auth?token=" + token)
+            .get('/api/auth?token=' + token)
             .end((err, res) => {
-              expect(res.body).toHaveProperty("auth");
+              expect(res.body).toHaveProperty('auth');
               expect(res.body.auth).toBe(null);
               done();
             });
@@ -49,16 +49,16 @@ describe("The /api/auth endpoint", () => {
       });
     });
 
-    describe("with a valid auth token", () => {
-      describe("in the query string", () => {
-        it("echoes back the auth payload", done => {
+    describe('with a valid auth token', () => {
+      describe('in the query string', () => {
+        it('echoes back the auth payload', done => {
           const scopes = { some: { scope: true } };
 
           withToken(scopes, token => {
             request(server)
-              .get("/api/auth?token=" + token)
+              .get('/api/auth?token=' + token)
               .end((err, res) => {
-                expect(res.body).toHaveProperty("auth");
+                expect(res.body).toHaveProperty('auth');
                 expect(res.body.auth).toBeDefined();
                 expect(res.body.auth.scopes).toMatchObject(scopes);
                 done();
@@ -67,16 +67,16 @@ describe("The /api/auth endpoint", () => {
         });
       });
 
-      describe("in the Authorization header", () => {
-        it("echoes back the auth payload", done => {
+      describe('in the Authorization header', () => {
+        it('echoes back the auth payload', done => {
           const scopes = { some: { scope: true } };
 
           withAuthHeader(scopes, header => {
             request(server)
-              .get("/api/auth")
+              .get('/api/auth')
               .set({ Authorization: header })
               .end((err, res) => {
-                expect(res.body).toHaveProperty("auth");
+                expect(res.body).toHaveProperty('auth');
                 expect(res.body.auth).toBeDefined();
                 expect(res.body.auth.scopes).toMatchObject(scopes);
                 done();
diff --git a/modules/__tests__/api-blacklist-test.js b/modules/__tests__/api-blacklist-test.js
index 77092fc3..acb93956 100644
--- a/modules/__tests__/api-blacklist-test.js
+++ b/modules/__tests__/api-blacklist-test.js
@@ -1,22 +1,22 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
-const clearBlacklist = require("./utils/clearBlacklist");
-const withToken = require("./utils/withToken");
+const createServer = require('../createServer');
+const clearBlacklist = require('./utils/clearBlacklist');
+const withToken = require('./utils/withToken');
 
-describe("The /api/blacklist endpoint", () => {
+describe('The /api/blacklist endpoint', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  describe("POST /api/blacklist", () => {
+  describe('POST /api/blacklist', () => {
     afterEach(clearBlacklist);
 
-    describe("with no auth", () => {
-      it("is forbidden", done => {
+    describe('with no auth', () => {
+      it('is forbidden', done => {
         request(server)
-          .post("/api/blacklist")
+          .post('/api/blacklist')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
@@ -25,11 +25,11 @@ describe("The /api/blacklist endpoint", () => {
     });
 
     describe('with the "blacklist.add" scope', () => {
-      it("can add to the blacklist", done => {
+      it('can add to the blacklist', done => {
         withToken({ blacklist: { add: true } }, token => {
           request(server)
-            .post("/api/blacklist")
-            .send({ token, packageName: "bad-package" })
+            .post('/api/blacklist')
+            .send({ token, packageName: 'bad-package' })
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
               expect(res.body.ok).toBe(true);
@@ -40,11 +40,11 @@ describe("The /api/blacklist endpoint", () => {
     });
   });
 
-  describe("GET /api/blacklist", () => {
-    describe("with no auth", () => {
-      it("is forbidden", done => {
+  describe('GET /api/blacklist', () => {
+    describe('with no auth', () => {
+      it('is forbidden', done => {
         request(server)
-          .get("/api/blacklist")
+          .get('/api/blacklist')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
@@ -53,10 +53,10 @@ describe("The /api/blacklist endpoint", () => {
     });
 
     describe('with the "blacklist.read" scope', () => {
-      it("can read the blacklist", done => {
+      it('can read the blacklist', done => {
         withToken({ blacklist: { read: true } }, token => {
           request(server)
-            .get("/api/blacklist?token=" + token)
+            .get('/api/blacklist?token=' + token)
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
               done();
@@ -66,11 +66,11 @@ describe("The /api/blacklist endpoint", () => {
     });
   });
 
-  describe("DELETE /api/blacklist", () => {
-    describe("with no auth", () => {
-      it("is forbidden", done => {
+  describe('DELETE /api/blacklist', () => {
+    describe('with no auth', () => {
+      it('is forbidden', done => {
         request(server)
-          .delete("/api/blacklist")
+          .delete('/api/blacklist')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
@@ -79,11 +79,11 @@ describe("The /api/blacklist endpoint", () => {
     });
 
     describe('with the "blacklist.remove" scope', () => {
-      it("can remove a package from the blacklist", done => {
+      it('can remove a package from the blacklist', done => {
         withToken({ blacklist: { remove: true } }, token => {
           request(server)
-            .delete("/api/blacklist")
-            .send({ token, packageName: "bad-package" })
+            .delete('/api/blacklist')
+            .send({ token, packageName: 'bad-package' })
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
               expect(res.body.ok).toBe(true);
@@ -92,11 +92,11 @@ describe("The /api/blacklist endpoint", () => {
         });
       });
 
-      it("can remove a scoped package from the blacklist", done => {
+      it('can remove a scoped package from the blacklist', done => {
         withToken({ blacklist: { remove: true } }, token => {
           request(server)
-            .delete("/api/blacklist")
-            .send({ token, packageName: "@scope/bad-package" })
+            .delete('/api/blacklist')
+            .send({ token, packageName: '@scope/bad-package' })
             .end((err, res) => {
               expect(res.statusCode).toBe(200);
               expect(res.body.ok).toBe(true);
diff --git a/modules/__tests__/api-publicKey-test.js b/modules/__tests__/api-publicKey-test.js
index 971fa626..bcec4792 100644
--- a/modules/__tests__/api-publicKey-test.js
+++ b/modules/__tests__/api-publicKey-test.js
@@ -1,17 +1,17 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
+const createServer = require('../createServer');
 
-describe("The /api/publicKey endpoint", () => {
+describe('The /api/publicKey endpoint', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  describe("GET /api/publicKey", () => {
-    it("echoes the public key", done => {
+  describe('GET /api/publicKey', () => {
+    it('echoes the public key', done => {
       request(server)
-        .get("/api/publicKey")
+        .get('/api/publicKey')
         .end((err, res) => {
           expect(res.text).toMatch(/PUBLIC KEY/);
           done();
diff --git a/modules/__tests__/server-test.js b/modules/__tests__/server-test.js
index 1051e359..5b92a1e0 100644
--- a/modules/__tests__/server-test.js
+++ b/modules/__tests__/server-test.js
@@ -1,62 +1,62 @@
-const request = require("supertest");
+const request = require('supertest');
 
-const createServer = require("../createServer");
+const createServer = require('../createServer');
 
-const clearBlacklist = require("./utils/clearBlacklist");
-const withBlacklist = require("./utils/withBlacklist");
+const clearBlacklist = require('./utils/clearBlacklist');
+const withBlacklist = require('./utils/withBlacklist');
 
-describe("The server", () => {
+describe('The server', () => {
   let server;
   beforeEach(() => {
     server = createServer();
   });
 
-  it("redirects /_meta to ?meta", done => {
+  it('redirects /_meta to ?meta', done => {
     request(server)
-      .get("/_meta/react")
+      .get('/_meta/react')
       .end((err, res) => {
         expect(res.statusCode).toBe(301);
-        expect(res.headers.location).toBe("/react?meta");
+        expect(res.headers.location).toBe('/react?meta');
         done();
       });
   });
 
-  it("redirects ?json to ?meta", done => {
+  it('redirects ?json to ?meta', done => {
     request(server)
-      .get("/react?json")
+      .get('/react?json')
       .end((err, res) => {
         expect(res.statusCode).toBe(301);
-        expect(res.headers.location).toBe("/react?meta");
+        expect(res.headers.location).toBe('/react?meta');
         done();
       });
   });
 
-  it("redirects invalid query params", done => {
+  it('redirects invalid query params', done => {
     request(server)
-      .get("/react?main=index&invalid")
+      .get('/react?main=index&invalid')
       .end((err, res) => {
         expect(res.statusCode).toBe(302);
-        expect(res.headers.location).toBe("/react?main=index");
+        expect(res.headers.location).toBe('/react?main=index');
         done();
       });
   });
 
-  it("rejects invalid package names", done => {
+  it('rejects invalid package names', done => {
     request(server)
-      .get("/_invalid/index.js")
+      .get('/_invalid/index.js')
       .end((err, res) => {
         expect(res.statusCode).toBe(403);
         done();
       });
   });
 
-  describe("blacklisted packages", () => {
+  describe('blacklisted packages', () => {
     afterEach(clearBlacklist);
 
-    it("does not serve blacklisted packages", done => {
-      withBlacklist(["bad-package"], () => {
+    it('does not serve blacklisted packages', done => {
+      withBlacklist(['bad-package'], () => {
         request(server)
-          .get("/bad-package/index.js")
+          .get('/bad-package/index.js')
           .end((err, res) => {
             expect(res.statusCode).toBe(403);
             done();
diff --git a/modules/__tests__/setupTestFramework.js b/modules/__tests__/setupTestFramework.js
index 58fe819f..bf502164 100644
--- a/modules/__tests__/setupTestFramework.js
+++ b/modules/__tests__/setupTestFramework.js
@@ -1,3 +1,3 @@
-const closeDatabase = require("./utils/closeDatabase");
+const closeDatabase = require('./utils/closeDatabase');
 
 afterAll(closeDatabase);
diff --git a/modules/__tests__/utils/clearBlacklist.js b/modules/__tests__/utils/clearBlacklist.js
index 8bbbf319..9b8df43c 100644
--- a/modules/__tests__/utils/clearBlacklist.js
+++ b/modules/__tests__/utils/clearBlacklist.js
@@ -1,4 +1,4 @@
-const BlacklistAPI = require("../../BlacklistAPI");
+const BlacklistAPI = require('../../BlacklistAPI');
 
 function clearBlacklist(done) {
   BlacklistAPI.removeAllPackages().then(done, done);
diff --git a/modules/__tests__/utils/withAuthHeader.js b/modules/__tests__/utils/withAuthHeader.js
index 5c3f8847..595a8166 100644
--- a/modules/__tests__/utils/withAuthHeader.js
+++ b/modules/__tests__/utils/withAuthHeader.js
@@ -1,7 +1,7 @@
-const withToken = require("./withToken");
+const withToken = require('./withToken');
 
 function encodeBase64(token) {
-  return Buffer.from(token).toString("base64");
+  return Buffer.from(token).toString('base64');
 }
 
 function withAuthHeader(scopes, done) {
diff --git a/modules/__tests__/utils/withBlacklist.js b/modules/__tests__/utils/withBlacklist.js
index 98e3be3c..28d8d698 100644
--- a/modules/__tests__/utils/withBlacklist.js
+++ b/modules/__tests__/utils/withBlacklist.js
@@ -1,4 +1,4 @@
-const BlacklistAPI = require("../../BlacklistAPI");
+const BlacklistAPI = require('../../BlacklistAPI');
 
 function withBlacklist(blacklist, done) {
   Promise.all(blacklist.map(BlacklistAPI.addPackage)).then(done);
diff --git a/modules/__tests__/utils/withRevokedToken.js b/modules/__tests__/utils/withRevokedToken.js
index 2e55fce5..447463b1 100644
--- a/modules/__tests__/utils/withRevokedToken.js
+++ b/modules/__tests__/utils/withRevokedToken.js
@@ -1,5 +1,5 @@
-const withToken = require("./withToken");
-const AuthAPI = require("../../AuthAPI");
+const withToken = require('./withToken');
+const AuthAPI = require('../../AuthAPI');
 
 function withRevokedToken(scopes, done) {
   withToken(scopes, token => {
diff --git a/modules/__tests__/utils/withToken.js b/modules/__tests__/utils/withToken.js
index 9dbc4a0f..ff65d1ae 100644
--- a/modules/__tests__/utils/withToken.js
+++ b/modules/__tests__/utils/withToken.js
@@ -1,4 +1,4 @@
-const AuthAPI = require("../../AuthAPI");
+const AuthAPI = require('../../AuthAPI');
 
 function withToken(scopes, done) {
   AuthAPI.createToken(scopes).then(done);
diff --git a/modules/actions/addToBlacklist.js b/modules/actions/addToBlacklist.js
index 2f710ef4..ac2eb990 100644
--- a/modules/actions/addToBlacklist.js
+++ b/modules/actions/addToBlacklist.js
@@ -1,6 +1,6 @@
-const validateNpmPackageName = require("validate-npm-package-name");
+const validateNpmPackageName = require('validate-npm-package-name');
 
-const BlacklistAPI = require("../BlacklistAPI");
+const BlacklistAPI = require('../BlacklistAPI');
 
 function addToBlacklist(req, res) {
   const packageName = req.body.packageName;
@@ -15,7 +15,7 @@ function addToBlacklist(req, res) {
 
   // Disallow invalid package names.
   if (nameErrors) {
-    const reason = nameErrors.join(", ");
+    const reason = nameErrors.join(', ');
     return res.status(403).send({
       error: `Invalid package name "${packageName}" (${reason})`
     });
@@ -33,7 +33,7 @@ function addToBlacklist(req, res) {
       res.send({
         ok: true,
         message: `Package "${packageName}" was ${
-          added ? "added to" : "already in"
+          added ? 'added to' : 'already in'
         } the blacklist`
       });
     },
diff --git a/modules/actions/createAuth.js b/modules/actions/createAuth.js
index 4fd8086a..588d509c 100644
--- a/modules/actions/createAuth.js
+++ b/modules/actions/createAuth.js
@@ -1,4 +1,4 @@
-const AuthAPI = require("../AuthAPI");
+const AuthAPI = require('../AuthAPI');
 
 const defaultScopes = {
   blacklist: {
@@ -15,7 +15,7 @@ function createAuth(req, res) {
       console.error(error);
 
       res.status(500).send({
-        error: "Unable to generate auth token"
+        error: 'Unable to generate auth token'
       });
     }
   );
diff --git a/modules/actions/removeFromBlacklist.js b/modules/actions/removeFromBlacklist.js
index 7ad3faf5..c4d44ecb 100644
--- a/modules/actions/removeFromBlacklist.js
+++ b/modules/actions/removeFromBlacklist.js
@@ -1,6 +1,6 @@
-const validateNpmPackageName = require("validate-npm-package-name");
+const validateNpmPackageName = require('validate-npm-package-name');
 
-const BlacklistAPI = require("../BlacklistAPI");
+const BlacklistAPI = require('../BlacklistAPI');
 
 function removeFromBlacklist(req, res) {
   // TODO: Remove req.packageName when DELETE
@@ -17,7 +17,7 @@ function removeFromBlacklist(req, res) {
 
   // Disallow invalid package names.
   if (nameErrors) {
-    const reason = nameErrors.join(", ");
+    const reason = nameErrors.join(', ');
     return res.status(403).send({
       error: `Invalid package name "${packageName}" (${reason})`
     });
@@ -35,7 +35,7 @@ function removeFromBlacklist(req, res) {
       res.send({
         ok: true,
         message: `Package "${packageName}" was ${
-          removed ? "removed from" : "not in"
+          removed ? 'removed from' : 'not in'
         } the blacklist`
       });
     },
diff --git a/modules/actions/serveAutoIndexPage.js b/modules/actions/serveAutoIndexPage.js
index 1fc43041..e33878dc 100644
--- a/modules/actions/serveAutoIndexPage.js
+++ b/modules/actions/serveAutoIndexPage.js
@@ -1,21 +1,21 @@
-const React = require("react");
-const ReactDOMServer = require("react-dom/server");
-const semver = require("semver");
+const React = require('react');
+const ReactDOMServer = require('react-dom/server');
+const semver = require('semver');
 
-const MainPage = require("../client/MainPage");
-const AutoIndexApp = require("../client/autoIndex/App");
-const createHTML = require("../client/utils/createHTML");
-const renderPage = require("../utils/renderPage");
+const MainPage = require('../client/MainPage');
+const AutoIndexApp = require('../client/autoIndex/App');
+const createHTML = require('../client/utils/createHTML');
+const renderPage = require('../utils/renderPage');
 
 const globalScripts =
-  process.env.NODE_ENV === "production"
+  process.env.NODE_ENV === 'production'
     ? [
-        "/react@16.4.1/umd/react.production.min.js",
-        "/react-dom@16.4.1/umd/react-dom.production.min.js"
+        '/react@16.4.1/umd/react.production.min.js',
+        '/react-dom@16.4.1/umd/react-dom.production.min.js'
       ]
     : [
-        "/react@16.4.1/umd/react.development.js",
-        "/react-dom@16.4.1/umd/react-dom.development.js"
+        '/react@16.4.1/umd/react.development.js',
+        '/react-dom@16.4.1/umd/react-dom.development.js'
       ];
 
 function byVersion(a, b) {
@@ -23,8 +23,8 @@ function byVersion(a, b) {
 }
 
 function serveAutoIndexPage(req, res) {
-  const scripts = globalScripts.concat(req.assets.getScripts("autoIndex"));
-  const styles = req.assets.getStyles("autoIndex");
+  const scripts = globalScripts.concat(req.assets.getScripts('autoIndex'));
+  const styles = req.assets.getStyles('autoIndex');
 
   const props = {
     packageName: req.packageName,
@@ -49,8 +49,8 @@ function serveAutoIndexPage(req, res) {
 
   res
     .set({
-      "Cache-Control": "public,max-age=60", // 1 minute
-      "Cache-Tag": "auto-index"
+      'Cache-Control': 'public,max-age=60', // 1 minute
+      'Cache-Tag': 'auto-index'
     })
     .send(html);
 }
diff --git a/modules/actions/serveFile.js b/modules/actions/serveFile.js
index 1d1a5561..93bf4411 100644
--- a/modules/actions/serveFile.js
+++ b/modules/actions/serveFile.js
@@ -1,8 +1,8 @@
-const serveAutoIndexPage = require("./serveAutoIndexPage");
-const serveHTMLModule = require("./serveHTMLModule");
-const serveJavaScriptModule = require("./serveJavaScriptModule");
-const serveStaticFile = require("./serveStaticFile");
-const serveMetadata = require("./serveMetadata");
+const serveAutoIndexPage = require('./serveAutoIndexPage');
+const serveHTMLModule = require('./serveHTMLModule');
+const serveJavaScriptModule = require('./serveJavaScriptModule');
+const serveStaticFile = require('./serveStaticFile');
+const serveMetadata = require('./serveMetadata');
 
 /**
  * Send the file, JSON metadata, or HTML directory listing.
@@ -12,23 +12,23 @@ function serveFile(req, res) {
     return serveMetadata(req, res);
   }
 
-  if (req.entry.type === "directory") {
+  if (req.entry.type === 'directory') {
     return serveAutoIndexPage(req, res);
   }
 
   if (req.query.module != null) {
-    if (req.entry.contentType === "application/javascript") {
+    if (req.entry.contentType === 'application/javascript') {
       return serveJavaScriptModule(req, res);
     }
 
-    if (req.entry.contentType === "text/html") {
+    if (req.entry.contentType === 'text/html') {
       return serveHTMLModule(req, res);
     }
 
     return res
       .status(403)
-      .type("text")
-      .send("?module mode is available only for JavaScript and HTML files");
+      .type('text')
+      .send('?module mode is available only for JavaScript and HTML files');
   }
 
   serveStaticFile(req, res);
diff --git a/modules/actions/serveHTMLModule.js b/modules/actions/serveHTMLModule.js
index 1b2cdf26..8d0cd00f 100644
--- a/modules/actions/serveHTMLModule.js
+++ b/modules/actions/serveHTMLModule.js
@@ -1,14 +1,14 @@
-const etag = require("etag");
-const cheerio = require("cheerio");
+const etag = require('etag');
+const cheerio = require('cheerio');
 
-const getContentTypeHeader = require("../utils/getContentTypeHeader");
-const rewriteBareModuleIdentifiers = require("../utils/rewriteBareModuleIdentifiers");
+const getContentTypeHeader = require('../utils/getContentTypeHeader');
+const rewriteBareModuleIdentifiers = require('../utils/rewriteBareModuleIdentifiers');
 
 function serveHTMLModule(req, res) {
   try {
-    const $ = cheerio.load(req.entry.content.toString("utf8"));
+    const $ = cheerio.load(req.entry.content.toString('utf8'));
 
-    $("script[type=module]").each((index, element) => {
+    $('script[type=module]').each((index, element) => {
       $(element).html(
         rewriteBareModuleIdentifiers($(element).html(), req.packageConfig)
       );
@@ -18,11 +18,11 @@ function serveHTMLModule(req, res) {
 
     res
       .set({
-        "Content-Length": Buffer.byteLength(code),
-        "Content-Type": getContentTypeHeader(req.entry.contentType),
-        "Cache-Control": "public, max-age=31536000, immutable", // 1 year
+        'Content-Length': Buffer.byteLength(code),
+        'Content-Type': getContentTypeHeader(req.entry.contentType),
+        'Cache-Control': 'public, max-age=31536000, immutable', // 1 year
         ETag: etag(code),
-        "Cache-Tag": "file, html-file, html-module"
+        'Cache-Tag': 'file, html-file, html-module'
       })
       .send(code);
   } catch (error) {
@@ -38,7 +38,7 @@ function serveHTMLModule(req, res) {
 
     res
       .status(500)
-      .type("text")
+      .type('text')
       .send(
         `Cannot generate module for ${req.packageSpec}${
           req.filename
diff --git a/modules/actions/serveJavaScriptModule.js b/modules/actions/serveJavaScriptModule.js
index 5772c95d..6dcd5f0a 100644
--- a/modules/actions/serveJavaScriptModule.js
+++ b/modules/actions/serveJavaScriptModule.js
@@ -1,22 +1,22 @@
-const etag = require("etag");
+const etag = require('etag');
 
-const getContentTypeHeader = require("../utils/getContentTypeHeader");
-const rewriteBareModuleIdentifiers = require("../utils/rewriteBareModuleIdentifiers");
+const getContentTypeHeader = require('../utils/getContentTypeHeader');
+const rewriteBareModuleIdentifiers = require('../utils/rewriteBareModuleIdentifiers');
 
 function serveJavaScriptModule(req, res) {
   try {
     const code = rewriteBareModuleIdentifiers(
-      req.entry.content.toString("utf8"),
+      req.entry.content.toString('utf8'),
       req.packageConfig
     );
 
     res
       .set({
-        "Content-Length": Buffer.byteLength(code),
-        "Content-Type": getContentTypeHeader(req.entry.contentType),
-        "Cache-Control": "public, max-age=31536000, immutable", // 1 year
+        'Content-Length': Buffer.byteLength(code),
+        'Content-Type': getContentTypeHeader(req.entry.contentType),
+        'Cache-Control': 'public, max-age=31536000, immutable', // 1 year
         ETag: etag(code),
-        "Cache-Tag": "file,js-file,js-module"
+        'Cache-Tag': 'file,js-file,js-module'
       })
       .send(code);
   } catch (error) {
@@ -32,7 +32,7 @@ function serveJavaScriptModule(req, res) {
 
     res
       .status(500)
-      .type("text")
+      .type('text')
       .send(
         `Cannot generate module for ${req.packageSpec}${
           req.filename
diff --git a/modules/actions/serveMetadata.js b/modules/actions/serveMetadata.js
index 19987b42..5c44c8c7 100644
--- a/modules/actions/serveMetadata.js
+++ b/modules/actions/serveMetadata.js
@@ -1,9 +1,9 @@
-const path = require("path");
+const path = require('path');
 
-const addLeadingSlash = require("../utils/addLeadingSlash");
+const addLeadingSlash = require('../utils/addLeadingSlash');
 
 function getMatchingEntries(entry, entries) {
-  const dirname = entry.name || ".";
+  const dirname = entry.name || '.';
 
   return Object.keys(entries)
     .filter(name => entry.name !== name && path.dirname(name) === dirname)
@@ -16,12 +16,12 @@ function getMetadata(entry, entries) {
     type: entry.type
   };
 
-  if (entry.type === "file") {
+  if (entry.type === 'file') {
     metadata.contentType = entry.contentType;
     metadata.integrity = entry.integrity;
     metadata.lastModified = entry.lastModified;
     metadata.size = entry.size;
-  } else if (entry.type === "directory") {
+  } else if (entry.type === 'directory') {
     metadata.files = getMatchingEntries(entry, entries).map(e =>
       getMetadata(e, entries)
     );
@@ -35,8 +35,8 @@ function serveMetadata(req, res) {
 
   res
     .set({
-      "Cache-Control": "public, max-age=31536000, immutable", // 1 year
-      "Cache-Tag": "meta"
+      'Cache-Control': 'public, max-age=31536000, immutable', // 1 year
+      'Cache-Tag': 'meta'
     })
     .send(metadata);
 }
diff --git a/modules/actions/serveRootPage.js b/modules/actions/serveRootPage.js
index 627ab076..2a1b3484 100644
--- a/modules/actions/serveRootPage.js
+++ b/modules/actions/serveRootPage.js
@@ -1,22 +1,22 @@
-const MainPage = require("../client/MainPage");
-const renderPage = require("../utils/renderPage");
+const MainPage = require('../client/MainPage');
+const renderPage = require('../utils/renderPage');
 
 const globalScripts =
-  process.env.NODE_ENV === "production"
+  process.env.NODE_ENV === 'production'
     ? [
-        "/react@16.4.1/umd/react.production.min.js",
-        "/react-dom@16.4.1/umd/react-dom.production.min.js",
-        "/react-router-dom@4.3.1/umd/react-router-dom.min.js"
+        '/react@16.4.1/umd/react.production.min.js',
+        '/react-dom@16.4.1/umd/react-dom.production.min.js',
+        '/react-router-dom@4.3.1/umd/react-router-dom.min.js'
       ]
     : [
-        "/react@16.4.1/umd/react.development.js",
-        "/react-dom@16.4.1/umd/react-dom.development.js",
-        "/react-router-dom@4.3.1/umd/react-router-dom.js"
+        '/react@16.4.1/umd/react.development.js',
+        '/react-dom@16.4.1/umd/react-dom.development.js',
+        '/react-router-dom@4.3.1/umd/react-router-dom.js'
       ];
 
 function serveRootPage(req, res) {
-  const scripts = globalScripts.concat(req.assets.getScripts("main"));
-  const styles = req.assets.getStyles("main");
+  const scripts = globalScripts.concat(req.assets.getScripts('main'));
+  const styles = req.assets.getStyles('main');
 
   const html = renderPage(MainPage, {
     scripts: scripts,
diff --git a/modules/actions/serveStaticFile.js b/modules/actions/serveStaticFile.js
index 3f491135..26fba3d0 100644
--- a/modules/actions/serveStaticFile.js
+++ b/modules/actions/serveStaticFile.js
@@ -1,10 +1,10 @@
-const path = require("path");
-const etag = require("etag");
+const path = require('path');
+const etag = require('etag');
 
-const getContentTypeHeader = require("../utils/getContentTypeHeader");
+const getContentTypeHeader = require('../utils/getContentTypeHeader');
 
 function serveStaticFile(req, res) {
-  const tags = ["file"];
+  const tags = ['file'];
 
   const ext = path.extname(req.entry.name).substr(1);
   if (ext) {
@@ -13,12 +13,12 @@ function serveStaticFile(req, res) {
 
   res
     .set({
-      "Content-Length": req.entry.size,
-      "Content-Type": getContentTypeHeader(req.entry.contentType),
-      "Cache-Control": "public, max-age=31536000, immutable", // 1 year
-      "Last-Modified": req.entry.lastModified,
+      'Content-Length': req.entry.size,
+      'Content-Type': getContentTypeHeader(req.entry.contentType),
+      'Cache-Control': 'public, max-age=31536000, immutable', // 1 year
+      'Last-Modified': req.entry.lastModified,
       ETag: etag(req.entry.content),
-      "Cache-Tag": tags.join(",")
+      'Cache-Tag': tags.join(',')
     })
     .send(req.entry.content);
 }
diff --git a/modules/actions/showBlacklist.js b/modules/actions/showBlacklist.js
index 8f8b3554..03ca2984 100644
--- a/modules/actions/showBlacklist.js
+++ b/modules/actions/showBlacklist.js
@@ -1,4 +1,4 @@
-const BlacklistAPI = require("../BlacklistAPI");
+const BlacklistAPI = require('../BlacklistAPI');
 
 function showBlacklist(req, res) {
   BlacklistAPI.getPackages().then(
@@ -8,7 +8,7 @@ function showBlacklist(req, res) {
     error => {
       console.error(error);
       res.status(500).send({
-        error: "Unable to fetch blacklist"
+        error: 'Unable to fetch blacklist'
       });
     }
   );
diff --git a/modules/actions/showPublicKey.js b/modules/actions/showPublicKey.js
index 0e16b414..1b8c66e3 100644
--- a/modules/actions/showPublicKey.js
+++ b/modules/actions/showPublicKey.js
@@ -1,4 +1,4 @@
-const secretKey = require("../secretKey");
+const secretKey = require('../secretKey');
 
 function showPublicKey(req, res) {
   res.send({ publicKey: secretKey.public });
diff --git a/modules/actions/showStats.js b/modules/actions/showStats.js
index a87bddae..e6e6db9e 100644
--- a/modules/actions/showStats.js
+++ b/modules/actions/showStats.js
@@ -1,21 +1,21 @@
-const subDays = require("date-fns/sub_days");
-const startOfDay = require("date-fns/start_of_day");
-const startOfSecond = require("date-fns/start_of_second");
+const subDays = require('date-fns/sub_days');
+const startOfDay = require('date-fns/start_of_day');
+const startOfSecond = require('date-fns/start_of_second');
 
-const StatsAPI = require("../StatsAPI");
+const StatsAPI = require('../StatsAPI');
 
 function showStats(req, res) {
   let since, until;
   switch (req.query.period) {
-    case "last-day":
+    case 'last-day':
       until = startOfDay(new Date());
       since = subDays(until, 1);
       break;
-    case "last-week":
+    case 'last-week':
       until = startOfDay(new Date());
       since = subDays(until, 7);
       break;
-    case "last-month":
+    case 'last-month':
       until = startOfDay(new Date());
       since = subDays(until, 30);
       break;
@@ -27,35 +27,35 @@ function showStats(req, res) {
   }
 
   if (isNaN(since.getTime())) {
-    return res.status(403).send({ error: "?since is not a valid date" });
+    return res.status(403).send({ error: '?since is not a valid date' });
   }
 
   if (isNaN(until.getTime())) {
-    return res.status(403).send({ error: "?until is not a valid date" });
+    return res.status(403).send({ error: '?until is not a valid date' });
   }
 
   if (until <= since) {
     return res
       .status(403)
-      .send({ error: "?until date must come after ?since date" });
+      .send({ error: '?until date must come after ?since date' });
   }
 
   if (until >= new Date()) {
-    return res.status(403).send({ error: "?until must be a date in the past" });
+    return res.status(403).send({ error: '?until must be a date in the past' });
   }
 
   StatsAPI.getStats(since, until).then(
     stats => {
       res
         .set({
-          "Cache-Control": "public, max-age=60",
-          "Cache-Tag": "stats"
+          'Cache-Control': 'public, max-age=60',
+          'Cache-Tag': 'stats'
         })
         .send(stats);
     },
     error => {
       console.error(error);
-      res.status(500).send({ error: "Unable to fetch stats" });
+      res.status(500).send({ error: 'Unable to fetch stats' });
     }
   );
 }
diff --git a/modules/client/MainPage.js b/modules/client/MainPage.js
index ed140a58..7e29d49b 100644
--- a/modules/client/MainPage.js
+++ b/modules/client/MainPage.js
@@ -1,8 +1,8 @@
-const React = require("react");
-const PropTypes = require("prop-types");
+const React = require('react');
+const PropTypes = require('prop-types');
 
-const createHTML = require("./utils/createHTML");
-const x = require("./utils/execScript");
+const createHTML = require('./utils/createHTML');
+const x = require('./utils/execScript');
 
 function MainPage({ title, description, scripts, styles, data, content }) {
   return (
@@ -17,19 +17,23 @@ function MainPage({ title, description, scripts, styles, data, content }) {
         />
         <meta name="timestamp" content={new Date().toISOString()} />
         <link rel="shortcut icon" href="/favicon.ico" />
-        {styles.map(s => <link key={s} rel="stylesheet" href={s} />)}
+        {styles.map(s => (
+          <link key={s} rel="stylesheet" href={s} />
+        ))}
         {x(
-          "window.Promise || document.write('\\x3Cscript src=\"/_polyfills/es6-promise.min.js\">\\x3C/script>\\x3Cscript>ES6Promise.polyfill()\\x3C/script>')"
+          'window.Promise || document.write(\'\\x3Cscript src="/_polyfills/es6-promise.min.js">\\x3C/script>\\x3Cscript>ES6Promise.polyfill()\\x3C/script>\')'
         )}
         {x(
-          "window.fetch || document.write('\\x3Cscript src=\"/_polyfills/fetch.min.js\">\\x3C/script>')"
+          'window.fetch || document.write(\'\\x3Cscript src="/_polyfills/fetch.min.js">\\x3C/script>\')'
         )}
         {x(`window.__DATA__ = ${JSON.stringify(data)}`)}
         <title>{title}</title>
       </head>
       <body>
         <div id="root" dangerouslySetInnerHTML={content} />
-        {scripts.map(s => <script key={s} src={s} />)}
+        {scripts.map(s => (
+          <script key={s} src={s} />
+        ))}
       </body>
     </html>
   );
@@ -49,12 +53,12 @@ MainPage.propTypes = {
 };
 
 MainPage.defaultProps = {
-  title: "UNPKG",
-  description: "The CDN for everything on npm",
+  title: 'UNPKG',
+  description: 'The CDN for everything on npm',
   scripts: [],
   styles: [],
   data: {},
-  content: createHTML("")
+  content: createHTML('')
 };
 
 module.exports = MainPage;
diff --git a/modules/client/autoIndex.js b/modules/client/autoIndex.js
index 20bd3224..5d3ec49a 100644
--- a/modules/client/autoIndex.js
+++ b/modules/client/autoIndex.js
@@ -1,10 +1,10 @@
-require("./autoIndex.css");
+require('./autoIndex.css');
 
-const React = require("react");
-const ReactDOM = require("react-dom");
+const React = require('react');
+const ReactDOM = require('react-dom');
 
-const App = require("./autoIndex/App");
+const App = require('./autoIndex/App');
 
 const props = window.__DATA__ || {};
 
-ReactDOM.hydrate(<App {...props} />, document.getElementById("root"));
+ReactDOM.hydrate(<App {...props} />, document.getElementById('root'));
diff --git a/modules/client/autoIndex/App.js b/modules/client/autoIndex/App.js
index f8393d86..31f98c53 100644
--- a/modules/client/autoIndex/App.js
+++ b/modules/client/autoIndex/App.js
@@ -1,8 +1,8 @@
-require("./App.css");
+require('./App.css');
 
-const React = require("react");
+const React = require('react');
 
-const DirectoryListing = require("./DirectoryListing");
+const DirectoryListing = require('./DirectoryListing');
 
 class App extends React.Component {
   static defaultProps = {
@@ -11,8 +11,8 @@ class App extends React.Component {
 
   handleChange = event => {
     window.location.href = window.location.href.replace(
-      "@" + this.props.packageVersion,
-      "@" + event.target.value
+      '@' + this.props.packageVersion,
+      '@' + event.target.value
     );
   };
 
@@ -26,7 +26,7 @@ class App extends React.Component {
           </h1>
 
           <div className="app-version-selector">
-            Version:{" "}
+            Version:{' '}
             <select
               id="version"
               defaultValue={this.props.packageVersion}
@@ -59,8 +59,8 @@ class App extends React.Component {
   }
 }
 
-if (process.env.NODE_ENV === "development") {
-  const PropTypes = require("prop-types");
+if (process.env.NODE_ENV === 'development') {
+  const PropTypes = require('prop-types');
 
   const entryType = PropTypes.object;
 
diff --git a/modules/client/autoIndex/DirectoryListing.js b/modules/client/autoIndex/DirectoryListing.js
index 23e7b32a..2a655446 100644
--- a/modules/client/autoIndex/DirectoryListing.js
+++ b/modules/client/autoIndex/DirectoryListing.js
@@ -1,20 +1,20 @@
-require("./DirectoryListing.css");
+require('./DirectoryListing.css');
 
-const React = require("react");
-const formatBytes = require("pretty-bytes");
-const sortBy = require("sort-by");
+const React = require('react');
+const formatBytes = require('pretty-bytes');
+const sortBy = require('sort-by');
 
 function getDirname(name) {
   return (
     name
-      .split("/")
+      .split('/')
       .slice(0, -1)
-      .join("/") || "."
+      .join('/') || '.'
   );
 }
 
 function getMatchingEntries(entry, entries) {
-  const dirname = entry.name || ".";
+  const dirname = entry.name || '.';
 
   return Object.keys(entries)
     .filter(name => entry.name !== name && getDirname(name) === dirname)
@@ -28,7 +28,7 @@ function getRelativeName(base, name) {
 function DirectoryListing({ filename, entry, entries }) {
   const rows = [];
 
-  if (filename !== "/") {
+  if (filename !== '/') {
     rows.push(
       <tr key="..">
         <td>
@@ -46,11 +46,11 @@ function DirectoryListing({ filename, entry, entries }) {
   const matchingEntries = getMatchingEntries(entry, entries);
 
   matchingEntries
-    .filter(({ type }) => type === "directory")
-    .sort(sortBy("name"))
+    .filter(({ type }) => type === 'directory')
+    .sort(sortBy('name'))
     .forEach(({ name }) => {
       const relName = getRelativeName(entry.name, name);
-      const href = relName + "/";
+      const href = relName + '/';
 
       rows.push(
         <tr key={name}>
@@ -67,8 +67,8 @@ function DirectoryListing({ filename, entry, entries }) {
     });
 
   matchingEntries
-    .filter(({ type }) => type === "file")
-    .sort(sortBy("name"))
+    .filter(({ type }) => type === 'file')
+    .sort(sortBy('name'))
     .forEach(({ name, size, contentType, lastModified }) => {
       const relName = getRelativeName(entry.name, name);
 
@@ -100,7 +100,7 @@ function DirectoryListing({ filename, entry, entries }) {
         <tbody>
           {rows.map((row, index) =>
             React.cloneElement(row, {
-              className: index % 2 ? "odd" : "even"
+              className: index % 2 ? 'odd' : 'even'
             })
           )}
         </tbody>
@@ -109,8 +109,8 @@ function DirectoryListing({ filename, entry, entries }) {
   );
 }
 
-if (process.env.NODE_ENV === "development") {
-  const PropTypes = require("prop-types");
+if (process.env.NODE_ENV === 'development') {
+  const PropTypes = require('prop-types');
 
   const entryType = PropTypes.shape({
     name: PropTypes.string.isRequired
diff --git a/modules/client/main.js b/modules/client/main.js
index 2d55aa62..393410ed 100644
--- a/modules/client/main.js
+++ b/modules/client/main.js
@@ -1,8 +1,8 @@
-require("./main.css");
+require('./main.css');
 
-const React = require("react");
-const ReactDOM = require("react-dom");
+const React = require('react');
+const ReactDOM = require('react-dom');
 
-const App = require("./main/App");
+const App = require('./main/App');
 
-ReactDOM.render(<App />, document.getElementById("root"));
+ReactDOM.render(<App />, document.getElementById('root'));
diff --git a/modules/client/main/About.js b/modules/client/main/About.js
index 1f4bdb71..0fd94ae2 100644
--- a/modules/client/main/About.js
+++ b/modules/client/main/About.js
@@ -1,9 +1,9 @@
-require("./About.css");
+require('./About.css');
 
-const React = require("react");
+const React = require('react');
 
-const h = require("../utils/createHTML");
-const markup = require("./About.md");
+const h = require('../utils/createHTML');
+const markup = require('./About.md');
 
 function About() {
   return <div className="wrapper" dangerouslySetInnerHTML={h(markup)} />;
diff --git a/modules/client/main/App.js b/modules/client/main/App.js
index f0b82638..12c77ef2 100644
--- a/modules/client/main/App.js
+++ b/modules/client/main/App.js
@@ -1,7 +1,7 @@
-const React = require("react");
-const { HashRouter } = require("react-router-dom");
+const React = require('react');
+const { HashRouter } = require('react-router-dom');
 
-const Layout = require("./Layout");
+const Layout = require('./Layout');
 
 function App() {
   return (
diff --git a/modules/client/main/Home.js b/modules/client/main/Home.js
index d3c12ba2..20ef7a87 100644
--- a/modules/client/main/Home.js
+++ b/modules/client/main/Home.js
@@ -1,9 +1,9 @@
-require("./Home.css");
+require('./Home.css');
 
-const React = require("react");
+const React = require('react');
 
-const h = require("../utils/createHTML");
-const markup = require("./Home.md");
+const h = require('../utils/createHTML');
+const markup = require('./Home.md');
 
 function Home() {
   return <div className="wrapper" dangerouslySetInnerHTML={h(markup)} />;
diff --git a/modules/client/main/Layout.js b/modules/client/main/Layout.js
index 3f2a8643..e9cdc5fe 100644
--- a/modules/client/main/Layout.js
+++ b/modules/client/main/Layout.js
@@ -1,14 +1,14 @@
-require("./Layout.css");
+require('./Layout.css');
 
-const React = require("react");
-const PropTypes = require("prop-types");
-const { Switch, Route, Link, withRouter } = require("react-router-dom");
-const { Motion, spring } = require("react-motion");
+const React = require('react');
+const PropTypes = require('prop-types');
+const { Switch, Route, Link, withRouter } = require('react-router-dom');
+const { Motion, spring } = require('react-motion');
 
-const WindowSize = require("./WindowSize");
-const About = require("./About");
-const Stats = require("./Stats");
-const Home = require("./Home");
+const WindowSize = require('./WindowSize');
+const About = require('./About');
+const Stats = require('./Stats');
+const Home = require('./Home');
 
 class Layout extends React.Component {
   static propTypes = {
@@ -26,18 +26,18 @@ class Layout extends React.Component {
   adjustUnderline = (useSpring = false) => {
     let itemIndex;
     switch (this.props.location.pathname) {
-      case "/stats":
+      case '/stats':
         itemIndex = 1;
         break;
-      case "/about":
+      case '/about':
         itemIndex = 2;
         break;
-      case "/":
+      case '/':
       default:
         itemIndex = 0;
     }
 
-    const itemNodes = this.listNode.querySelectorAll("li");
+    const itemNodes = this.listNode.querySelectorAll('li');
     const currentNode = itemNodes[itemIndex];
 
     this.setState({
@@ -50,7 +50,7 @@ class Layout extends React.Component {
   componentDidMount() {
     this.adjustUnderline();
 
-    fetch("/api/stats?period=last-month")
+    fetch('/api/stats?period=last-month')
       .then(res => res.json())
       .then(stats => this.setState({ stats }));
 
diff --git a/modules/client/main/Stats.js b/modules/client/main/Stats.js
index f072e316..2cc6fd3c 100644
--- a/modules/client/main/Stats.js
+++ b/modules/client/main/Stats.js
@@ -1,14 +1,14 @@
-require("./Stats.css");
+require('./Stats.css');
 
-const React = require("react");
-const PropTypes = require("prop-types");
-const formatBytes = require("pretty-bytes");
-const formatDate = require("date-fns/format");
-const parseDate = require("date-fns/parse");
-const { continents, countries } = require("countries-list");
+const React = require('react');
+const PropTypes = require('prop-types');
+const formatBytes = require('pretty-bytes');
+const formatDate = require('date-fns/format');
+const parseDate = require('date-fns/parse');
+const { continents, countries } = require('countries-list');
 
-const formatNumber = require("../utils/formatNumber");
-const formatPercent = require("../utils/formatPercent");
+const formatNumber = require('../utils/formatNumber');
+const formatPercent = require('../utils/formatPercent');
 
 function getCountriesByContinent(continent) {
   return Object.keys(countries).filter(
@@ -68,15 +68,15 @@ class Stats extends React.Component {
                 </a>
               </td>
               <td>
-                {formatNumber(requests)} ({formatPercent(
-                  requests / totals.requests.all
-                )}%)
+                {formatNumber(requests)} (
+                {formatPercent(requests / totals.requests.all)}
+                %)
               </td>
               {bandwidth ? (
                 <td>
-                  {formatBytes(bandwidth)} ({formatPercent(
-                    bandwidth / totals.bandwidth.all
-                  )}%)
+                  {formatBytes(bandwidth)} (
+                  {formatPercent(bandwidth / totals.bandwidth.all)}
+                  %)
                 </td>
               ) : (
                 <td>-</td>
@@ -120,16 +120,16 @@ class Stats extends React.Component {
             </td>
             <td>
               <strong>
-                {formatNumber(continentData.requests)} ({formatPercent(
-                  continentData.requests / totals.requests.all
-                )}%)
+                {formatNumber(continentData.requests)} (
+                {formatPercent(continentData.requests / totals.requests.all)}
+                %)
               </strong>
             </td>
             <td>
               <strong>
-                {formatBytes(continentData.bandwidth)} ({formatPercent(
-                  continentData.bandwidth / totals.bandwidth.all
-                )}%)
+                {formatBytes(continentData.bandwidth)} (
+                {formatPercent(continentData.bandwidth / totals.bandwidth.all)}
+                %)
               </strong>
             </td>
           </tr>
@@ -148,14 +148,14 @@ class Stats extends React.Component {
               <tr key={continent + country} className="country-row">
                 <td className="country-name">{countries[country].name}</td>
                 <td>
-                  {formatNumber(countryRequests)} ({formatPercent(
-                    countryRequests / totals.requests.all
-                  )}%)
+                  {formatNumber(countryRequests)} (
+                  {formatPercent(countryRequests / totals.requests.all)}
+                  %)
                 </td>
                 <td>
-                  {formatBytes(countryBandwidth)} ({formatPercent(
-                    countryBandwidth / totals.bandwidth.all
-                  )}%)
+                  {formatBytes(countryBandwidth)} (
+                  {formatPercent(countryBandwidth / totals.bandwidth.all)}
+                  %)
                 </td>
               </tr>
             );
@@ -176,9 +176,9 @@ class Stats extends React.Component {
           <tr key={protocol}>
             <td>{protocol}</td>
             <td>
-              {formatNumber(requests)} ({formatPercent(
-                requests / sumValues(totals.requests.protocol)
-              )}%)
+              {formatNumber(requests)} (
+              {formatPercent(requests / sumValues(totals.requests.protocol))}
+              %)
             </td>
           </tr>
         );
@@ -187,29 +187,29 @@ class Stats extends React.Component {
     return (
       <div className="wrapper">
         <p>
-          From <strong>{formatDate(since, "MMM D")}</strong> to{" "}
-          <strong>{formatDate(until, "MMM D")}</strong> unpkg served{" "}
+          From <strong>{formatDate(since, 'MMM D')}</strong> to{' '}
+          <strong>{formatDate(until, 'MMM D')}</strong> unpkg served{' '}
           <strong>{formatNumber(totals.requests.all)}</strong> requests and a
           total of <strong>{formatBytes(totals.bandwidth.all)}</strong> of data
           to <strong>{formatNumber(totals.uniques.all)}</strong> unique
-          visitors,{" "}
+          visitors,{' '}
           <strong>
             {formatPercent(totals.requests.cached / totals.requests.all, 0)}%
-          </strong>{" "}
+          </strong>{' '}
           of which were served from the cache.
         </p>
 
         <h3>Packages</h3>
 
         <p>
-          The table below shows the most popular packages served by unpkg from{" "}
-          <strong>{formatDate(since, "MMM D")}</strong> to{" "}
-          <strong>{formatDate(until, "MMM D")}</strong>. Only the top{" "}
+          The table below shows the most popular packages served by unpkg from{' '}
+          <strong>{formatDate(since, 'MMM D')}</strong> to{' '}
+          <strong>{formatDate(until, 'MMM D')}</strong>. Only the top{' '}
           {Object.keys(totals.requests.package).length} packages are shown.
         </p>
 
         <p className="table-filter">
-          Include only packages that received at least{" "}
+          Include only packages that received at least{' '}
           <select
             value={this.state.minPackageRequests}
             onChange={event =>
@@ -224,11 +224,11 @@ class Stats extends React.Component {
             <option value="100000">100,000</option>
             <option value="1000000">1,000,000</option>
             <option value="10000000">10,000,000</option>
-          </select>{" "}
+          </select>{' '}
           requests.
         </p>
 
-        <table cellSpacing="0" cellPadding="0" style={{ width: "100%" }}>
+        <table cellSpacing="0" cellPadding="0" style={{ width: '100%' }}>
           <thead>
             <tr>
               <th>
@@ -248,13 +248,13 @@ class Stats extends React.Component {
         <h3>Regions</h3>
 
         <p>
-          The table below breaks down requests to unpkg from{" "}
-          <strong>{formatDate(since, "MMM D")}</strong> to{" "}
-          <strong>{formatDate(until, "MMM D")}</strong> by geographic region.
+          The table below breaks down requests to unpkg from{' '}
+          <strong>{formatDate(since, 'MMM D')}</strong> to{' '}
+          <strong>{formatDate(until, 'MMM D')}</strong> by geographic region.
         </p>
 
         <p className="table-filter">
-          Include only countries that made at least{" "}
+          Include only countries that made at least{' '}
           <select
             value={this.state.minCountryRequests}
             onChange={event =>
@@ -268,14 +268,14 @@ class Stats extends React.Component {
             <option value="1000000">1,000,000</option>
             <option value="10000000">10,000,000</option>
             <option value="100000000">100,000,000</option>
-          </select>{" "}
+          </select>{' '}
           requests.
         </p>
 
         <table
           cellSpacing="0"
           cellPadding="0"
-          style={{ width: "100%" }}
+          style={{ width: '100%' }}
           className="regions-table"
         >
           <thead>
@@ -297,12 +297,12 @@ class Stats extends React.Component {
         <h3>Protocols</h3>
 
         <p>
-          The table below breaks down requests to unpkg from{" "}
-          <strong>{formatDate(since, "MMM D")}</strong> to{" "}
-          <strong>{formatDate(until, "MMM D")}</strong> by HTTP protocol.
+          The table below breaks down requests to unpkg from{' '}
+          <strong>{formatDate(since, 'MMM D')}</strong> to{' '}
+          <strong>{formatDate(until, 'MMM D')}</strong> by HTTP protocol.
         </p>
 
-        <table cellSpacing="0" cellPadding="0" style={{ width: "100%" }}>
+        <table cellSpacing="0" cellPadding="0" style={{ width: '100%' }}>
           <thead>
             <tr>
               <th>
diff --git a/modules/client/main/WindowSize.js b/modules/client/main/WindowSize.js
index 6e9e5295..b6341cf5 100644
--- a/modules/client/main/WindowSize.js
+++ b/modules/client/main/WindowSize.js
@@ -1,10 +1,10 @@
-const React = require("react");
-const PropTypes = require("prop-types");
+const React = require('react');
+const PropTypes = require('prop-types');
 
-const addEvent = require("../utils/addEvent");
-const removeEvent = require("../utils/removeEvent");
+const addEvent = require('../utils/addEvent');
+const removeEvent = require('../utils/removeEvent');
 
-const resizeEvent = "resize";
+const resizeEvent = 'resize';
 
 class WindowSize extends React.Component {
   static propTypes = {
diff --git a/modules/client/utils/addEvent.js b/modules/client/utils/addEvent.js
index c49fa5f4..d45c48cc 100644
--- a/modules/client/utils/addEvent.js
+++ b/modules/client/utils/addEvent.js
@@ -2,7 +2,7 @@ function addEvent(node, type, handler) {
   if (node.addEventListener) {
     node.addEventListener(type, handler, false);
   } else if (node.attachEvent) {
-    node.attachEvent("on" + type, handler);
+    node.attachEvent('on' + type, handler);
   }
 }
 
diff --git a/modules/client/utils/execScript.js b/modules/client/utils/execScript.js
index b4224443..94279dcd 100644
--- a/modules/client/utils/execScript.js
+++ b/modules/client/utils/execScript.js
@@ -1,6 +1,6 @@
-const React = require("react");
+const React = require('react');
 
-const h = require("./createHTML");
+const h = require('./createHTML');
 
 function execScript(code) {
   return <script dangerouslySetInnerHTML={h(code)} />;
diff --git a/modules/client/utils/formatNumber.js b/modules/client/utils/formatNumber.js
index b85f318f..402b29c5 100644
--- a/modules/client/utils/formatNumber.js
+++ b/modules/client/utils/formatNumber.js
@@ -1,12 +1,12 @@
 function formatNumber(n) {
-  const digits = String(n).split("");
+  const digits = String(n).split('');
   const groups = [];
 
   while (digits.length) {
-    groups.unshift(digits.splice(-3).join(""));
+    groups.unshift(digits.splice(-3).join(''));
   }
 
-  return groups.join(",");
+  return groups.join(',');
 }
 
 module.exports = formatNumber;
diff --git a/modules/client/utils/parseNumber.js b/modules/client/utils/parseNumber.js
index 70120d78..78b3add4 100644
--- a/modules/client/utils/parseNumber.js
+++ b/modules/client/utils/parseNumber.js
@@ -1,5 +1,5 @@
 function parseNumber(s) {
-  return parseInt(s.replace(/,/g, ""), 10) || 0;
+  return parseInt(s.replace(/,/g, ''), 10) || 0;
 }
 
 module.exports = parseNumber;
diff --git a/modules/client/utils/removeEvent.js b/modules/client/utils/removeEvent.js
index 354ece92..40392e24 100644
--- a/modules/client/utils/removeEvent.js
+++ b/modules/client/utils/removeEvent.js
@@ -2,7 +2,7 @@ function removeEvent(node, type, handler) {
   if (node.removeEventListener) {
     node.removeEventListener(type, handler, false);
   } else if (node.detachEvent) {
-    node.detachEvent("on" + type, handler);
+    node.detachEvent('on' + type, handler);
   }
 }
 
diff --git a/modules/clientRuntime.js b/modules/clientRuntime.js
index c54ab376..56f24a11 100644
--- a/modules/clientRuntime.js
+++ b/modules/clientRuntime.js
@@ -1,9 +1,9 @@
 // Use babel to compile JSX on the fly.
-require("@babel/register")({
+require('@babel/register')({
   only: [/modules\/client/]
 });
 
 // Ignore require("*.css") calls.
-require.extensions[".css"] = function() {
+require.extensions['.css'] = function() {
   return {};
 };
diff --git a/modules/createDevCompiler.js b/modules/createDevCompiler.js
index 0b1b171c..9388467e 100644
--- a/modules/createDevCompiler.js
+++ b/modules/createDevCompiler.js
@@ -1,11 +1,11 @@
-const webpack = require("webpack");
+const webpack = require('webpack');
 
 /**
  * Returns a modified copy of the given webpackEntry object with
  * the moduleId in front of all other assets.
  */
 function prependModuleId(webpackEntry, moduleId) {
-  if (typeof webpackEntry === "string") {
+  if (typeof webpackEntry === 'string') {
     return [moduleId, webpackEntry];
   }
 
@@ -13,7 +13,7 @@ function prependModuleId(webpackEntry, moduleId) {
     return [moduleId, ...webpackEntry];
   }
 
-  if (webpackEntry && typeof webpackEntry === "object") {
+  if (webpackEntry && typeof webpackEntry === 'object') {
     const entry = { ...webpackEntry };
 
     for (const chunkName in entry) {
@@ -25,7 +25,7 @@ function prependModuleId(webpackEntry, moduleId) {
     return entry;
   }
 
-  throw new Error("Invalid webpack entry object");
+  throw new Error('Invalid webpack entry object');
 }
 
 /**
diff --git a/modules/createDevServer.js b/modules/createDevServer.js
index 77b45682..fdcdb4f4 100644
--- a/modules/createDevServer.js
+++ b/modules/createDevServer.js
@@ -1,11 +1,11 @@
-const express = require("express");
-const morgan = require("morgan");
-const WebpackDevServer = require("webpack-dev-server");
-const devErrorHandler = require("errorhandler");
+const express = require('express');
+const morgan = require('morgan');
+const WebpackDevServer = require('webpack-dev-server');
+const devErrorHandler = require('errorhandler');
 
-const devAssets = require("./middleware/devAssets");
-const createDevCompiler = require("./createDevCompiler");
-const createRouter = require("./createRouter");
+const devAssets = require('./middleware/devAssets');
+const createDevCompiler = require('./createDevCompiler');
+const createRouter = require('./createRouter');
 
 function createDevServer(publicDir, webpackConfig, devOrigin) {
   const compiler = createDevCompiler(
@@ -33,8 +33,8 @@ function createDevServer(publicDir, webpackConfig, devOrigin) {
     disableHostCheck: true,
     before(app) {
       // This runs before webpack-dev-middleware
-      app.disable("x-powered-by");
-      app.use(morgan("dev"));
+      app.disable('x-powered-by');
+      app.use(morgan('dev'));
     }
   });
 
diff --git a/modules/createRouter.js b/modules/createRouter.js
index 5ccc2f4a..ac033441 100644
--- a/modules/createRouter.js
+++ b/modules/createRouter.js
@@ -1,6 +1,6 @@
-const express = require("express");
-const bodyParser = require("body-parser");
-const cors = require("cors");
+const express = require('express');
+const bodyParser = require('body-parser');
+const cors = require('cors');
 
 function route(setup) {
   const app = express.Router();
@@ -11,92 +11,92 @@ function route(setup) {
 function createRouter() {
   const app = express.Router();
 
-  app.get("/", require("./actions/serveRootPage"));
+  app.get('/', require('./actions/serveRootPage'));
 
   app.use(cors());
   app.use(bodyParser.json());
-  app.use(require("./middleware/userToken"));
+  app.use(require('./middleware/userToken'));
 
   app.use(
-    "/api",
+    '/api',
     route(app => {
-      app.get("/publicKey", require("./actions/showPublicKey"));
+      app.get('/publicKey', require('./actions/showPublicKey'));
 
-      app.post("/auth", require("./actions/createAuth"));
-      app.get("/auth", require("./actions/showAuth"));
+      app.post('/auth', require('./actions/createAuth'));
+      app.get('/auth', require('./actions/showAuth'));
 
       app.post(
-        "/blacklist",
-        require("./middleware/requireAuth")("blacklist.add"),
-        require("./actions/addToBlacklist")
+        '/blacklist',
+        require('./middleware/requireAuth')('blacklist.add'),
+        require('./actions/addToBlacklist')
       );
       app.get(
-        "/blacklist",
-        require("./middleware/requireAuth")("blacklist.read"),
-        require("./actions/showBlacklist")
+        '/blacklist',
+        require('./middleware/requireAuth')('blacklist.read'),
+        require('./actions/showBlacklist')
       );
       app.delete(
-        "/blacklist",
-        require("./middleware/requireAuth")("blacklist.remove"),
-        require("./actions/removeFromBlacklist")
+        '/blacklist',
+        require('./middleware/requireAuth')('blacklist.remove'),
+        require('./actions/removeFromBlacklist')
       );
 
-      if (process.env.NODE_ENV !== "test") {
-        app.get("/stats", require("./actions/showStats"));
+      if (process.env.NODE_ENV !== 'test') {
+        app.get('/stats', require('./actions/showStats'));
       }
     })
   );
 
   // TODO: Remove
-  app.get("/_publicKey", require("./actions/showPublicKey"));
+  app.get('/_publicKey', require('./actions/showPublicKey'));
 
   // TODO: Remove
   app.use(
-    "/_auth",
+    '/_auth',
     route(app => {
-      app.post("/", require("./actions/createAuth"));
-      app.get("/", require("./actions/showAuth"));
+      app.post('/', require('./actions/createAuth'));
+      app.get('/', require('./actions/showAuth'));
     })
   );
 
   // TODO: Remove
   app.use(
-    "/_blacklist",
+    '/_blacklist',
     route(app => {
       app.post(
-        "/",
-        require("./middleware/requireAuth")("blacklist.add"),
-        require("./actions/addToBlacklist")
+        '/',
+        require('./middleware/requireAuth')('blacklist.add'),
+        require('./actions/addToBlacklist')
       );
       app.get(
-        "/",
-        require("./middleware/requireAuth")("blacklist.read"),
-        require("./actions/showBlacklist")
+        '/',
+        require('./middleware/requireAuth')('blacklist.read'),
+        require('./actions/showBlacklist')
       );
       app.delete(
-        "*",
-        require("./middleware/requireAuth")("blacklist.remove"),
-        require("./middleware/validatePackageURL"),
-        require("./actions/removeFromBlacklist")
+        '*',
+        require('./middleware/requireAuth')('blacklist.remove'),
+        require('./middleware/validatePackageURL'),
+        require('./actions/removeFromBlacklist')
       );
     })
   );
 
   // TODO: Remove
-  if (process.env.NODE_ENV !== "test") {
-    app.get("/_stats", require("./actions/showStats"));
+  if (process.env.NODE_ENV !== 'test') {
+    app.get('/_stats', require('./actions/showStats'));
   }
 
   app.get(
-    "*",
-    require("./middleware/redirectLegacyURLs"),
-    require("./middleware/validatePackageURL"),
-    require("./middleware/validatePackageName"),
-    require("./middleware/validateQuery"),
-    require("./middleware/checkBlacklist"),
-    require("./middleware/fetchPackage"),
-    require("./middleware/findFile"),
-    require("./actions/serveFile")
+    '*',
+    require('./middleware/redirectLegacyURLs'),
+    require('./middleware/validatePackageURL'),
+    require('./middleware/validatePackageName'),
+    require('./middleware/validateQuery'),
+    require('./middleware/checkBlacklist'),
+    require('./middleware/fetchPackage'),
+    require('./middleware/findFile'),
+    require('./actions/serveFile')
   );
 
   return app;
diff --git a/modules/createServer.js b/modules/createServer.js
index 6e63eaeb..2e22d12e 100644
--- a/modules/createServer.js
+++ b/modules/createServer.js
@@ -1,14 +1,14 @@
-const http = require("http");
-const express = require("express");
-const morgan = require("morgan");
-const raven = require("raven");
+const http = require('http');
+const express = require('express');
+const morgan = require('morgan');
+const raven = require('raven');
 
-const staticAssets = require("./middleware/staticAssets");
-const createRouter = require("./createRouter");
+const staticAssets = require('./middleware/staticAssets');
+const createRouter = require('./createRouter');
 
-morgan.token("fwd", req => {
-  const fwd = req.get("x-forwarded-for");
-  return fwd ? fwd.replace(/\s/g, "") : "-";
+morgan.token('fwd', req => {
+  const fwd = req.get('x-forwarded-for');
+  return fwd ? fwd.replace(/\s/g, '') : '-';
 });
 
 if (process.env.SENTRY_DSN) {
@@ -34,13 +34,13 @@ if (process.env.SENTRY_DSN) {
 function createServer(publicDir, statsFile) {
   const app = express();
 
-  app.disable("x-powered-by");
+  app.disable('x-powered-by');
 
   if (process.env.SENTRY_DSN) {
     app.use(raven.requestHandler());
   }
 
-  if (process.env.NODE_ENV !== "test") {
+  if (process.env.NODE_ENV !== 'test') {
     app.use(
       morgan(
         // Modified version of Heroku's log format
@@ -53,7 +53,7 @@ function createServer(publicDir, statsFile) {
   // app.use(errorHandler);
 
   if (publicDir) {
-    app.use(express.static(publicDir, { maxAge: "365d" }));
+    app.use(express.static(publicDir, { maxAge: '365d' }));
   }
 
   if (statsFile) {
@@ -76,14 +76,14 @@ function createServer(publicDir, statsFile) {
 
     socket.end(
       [
-        "HTTP/1.1 503 Service Unavailable",
-        "Date: " + new Date().toGMTString(),
-        "Content-Length: " + Buffer.byteLength(message),
-        "Content-Type: text/plain",
-        "Connection: close",
-        "",
+        'HTTP/1.1 503 Service Unavailable',
+        'Date: ' + new Date().toGMTString(),
+        'Content-Length: ' + Buffer.byteLength(message),
+        'Content-Type: text/plain',
+        'Connection: close',
+        '',
         message
-      ].join("\r\n")
+      ].join('\r\n')
     );
   });
 
diff --git a/modules/ingestLogs.js b/modules/ingestLogs.js
index b7dd45ac..c694ad3e 100644
--- a/modules/ingestLogs.js
+++ b/modules/ingestLogs.js
@@ -1,20 +1,20 @@
-const parseURL = require("url").parse;
-const startOfDay = require("date-fns/start_of_day");
-const addDays = require("date-fns/add_days");
+const parseURL = require('url').parse;
+const startOfDay = require('date-fns/start_of_day');
+const addDays = require('date-fns/add_days');
 
-const db = require("./utils/data");
-const isValidPackageName = require("./utils/isValidPackageName");
-const parsePackageURL = require("./utils/parsePackageURL");
-const logging = require("./utils/logging");
+const db = require('./utils/data');
+const isValidPackageName = require('./utils/isValidPackageName');
+const parsePackageURL = require('./utils/parsePackageURL');
+const logging = require('./utils/logging');
 
-const CloudflareAPI = require("./CloudflareAPI");
-const StatsAPI = require("./StatsAPI");
+const CloudflareAPI = require('./CloudflareAPI');
+const StatsAPI = require('./StatsAPI');
 
 /**
  * Domains we want to analyze.
  */
 const domainNames = [
-  "unpkg.com"
+  'unpkg.com'
   //"npmcdn.com" // We don't have log data on npmcdn.com yet :/
 ];
 
@@ -25,7 +25,7 @@ function getSeconds(date) {
 }
 
 function stringifySeconds(seconds) {
-  return new Date(seconds * 1000).toISOString().replace(/\.0+Z$/, "Z");
+  return new Date(seconds * 1000).toISOString().replace(/\.0+Z$/, 'Z');
 }
 
 function toSeconds(ms) {
@@ -45,8 +45,8 @@ function computeCounters(stream) {
     }
 
     stream
-      .on("error", reject)
-      .on("data", entry => {
+      .on('error', reject)
+      .on('data', entry => {
         totalEntries += 1;
 
         const date = new Date(Math.round(entry.EdgeStartTimestamp / 1000000));
@@ -105,7 +105,7 @@ function computeCounters(stream) {
           );
         }
       })
-      .on("end", () => {
+      .on('end', () => {
         resolve({ counters, expireat, totalEntries });
       });
   });
@@ -137,12 +137,12 @@ function ingestLogsForZone(zone, startDate, endDate) {
 
   const startFetchTime = Date.now();
   const fields = [
-    "EdgeStartTimestamp",
-    "EdgeResponseStatus",
-    "EdgeResponseBytes",
-    "ClientRequestProtocol",
-    "ClientRequestURI",
-    "ClientRequestReferer"
+    'EdgeStartTimestamp',
+    'EdgeResponseStatus',
+    'EdgeResponseBytes',
+    'ClientRequestProtocol',
+    'ClientRequestURI',
+    'ClientRequestReferer'
   ];
 
   return CloudflareAPI.getLogs(
@@ -154,7 +154,7 @@ function ingestLogsForZone(zone, startDate, endDate) {
     const endFetchTime = Date.now();
 
     logging.info(
-      "Fetched logs for %s from %s to %s (%dms)",
+      'Fetched logs for %s from %s to %s (%dms)',
       zone.name,
       stringifySeconds(startSeconds),
       stringifySeconds(endSeconds),
@@ -167,7 +167,7 @@ function ingestLogsForZone(zone, startDate, endDate) {
       const endProcessTime = Date.now();
 
       logging.info(
-        "Processed %d log entries for %s (%dms)",
+        'Processed %d log entries for %s (%dms)',
         totalEntries,
         zone.name,
         endProcessTime - startProcessTime
diff --git a/modules/ingestLogsEveryMinute.js b/modules/ingestLogsEveryMinute.js
index eb8f766e..5bb3cd0e 100644
--- a/modules/ingestLogsEveryMinute.js
+++ b/modules/ingestLogsEveryMinute.js
@@ -1,7 +1,7 @@
-const addMinutes = require("date-fns/add_minutes");
-const startOfMinute = require("date-fns/start_of_minute");
+const addMinutes = require('date-fns/add_minutes');
+const startOfMinute = require('date-fns/start_of_minute');
 
-const ingestLogs = require("./ingestLogs");
+const ingestLogs = require('./ingestLogs');
 
 const oneSecond = 1000;
 const oneMinute = oneSecond * 60;
@@ -26,18 +26,18 @@ function work() {
 }
 
 function shutdown() {
-  console.log("Shutting down...");
+  console.log('Shutting down...');
 
   clearInterval(timer);
 
   currentWorkload.then(() => {
-    console.log("Goodbye!");
+    console.log('Goodbye!');
     process.exit();
   });
 }
 
 work();
 
-process.on("SIGINT", shutdown).on("SIGTERM", shutdown);
+process.on('SIGINT', shutdown).on('SIGTERM', shutdown);
 
 timer = setInterval(work, oneMinute);
diff --git a/modules/middleware/checkBlacklist.js b/modules/middleware/checkBlacklist.js
index 1ce96663..1f9479c5 100644
--- a/modules/middleware/checkBlacklist.js
+++ b/modules/middleware/checkBlacklist.js
@@ -1,4 +1,4 @@
-const BlacklistAPI = require("../BlacklistAPI");
+const BlacklistAPI = require('../BlacklistAPI');
 
 function checkBlacklist(req, res, next) {
   BlacklistAPI.includesPackage(req.packageName).then(
@@ -7,14 +7,14 @@ function checkBlacklist(req, res, next) {
       if (blacklisted) {
         res
           .status(403)
-          .type("text")
+          .type('text')
           .send(`Package "${req.packageName}" is blacklisted`);
       } else {
         next();
       }
     },
     error => {
-      console.error("Unable to fetch the blacklist: %s", error);
+      console.error('Unable to fetch the blacklist: %s', error);
 
       // Continue anyway.
       next();
diff --git a/modules/middleware/devAssets.js b/modules/middleware/devAssets.js
index c0710481..14cb021c 100644
--- a/modules/middleware/devAssets.js
+++ b/modules/middleware/devAssets.js
@@ -1,6 +1,6 @@
-const invariant = require("invariant");
+const invariant = require('invariant');
 
-const createAssets = require("./utils/createAssets");
+const createAssets = require('./utils/createAssets');
 
 /**
  * An express middleware that sets req.assets from the
@@ -9,15 +9,15 @@ const createAssets = require("./utils/createAssets");
  */
 function devAssets(webpackCompiler) {
   let assets;
-  webpackCompiler.plugin("done", stats => {
+  webpackCompiler.plugin('done', stats => {
     assets = createAssets(stats.toJson());
   });
 
   return (req, res, next) => {
     invariant(
       assets != null,
-      "devAssets middleware needs a running compiler; " +
-        "use webpack-dev-middleware in front of devAssets"
+      'devAssets middleware needs a running compiler; ' +
+        'use webpack-dev-middleware in front of devAssets'
     );
 
     req.assets = assets;
diff --git a/modules/middleware/fetchPackage.js b/modules/middleware/fetchPackage.js
index b14c1799..0f4e6e06 100644
--- a/modules/middleware/fetchPackage.js
+++ b/modules/middleware/fetchPackage.js
@@ -1,19 +1,19 @@
-const semver = require("semver");
+const semver = require('semver');
 
-const addLeadingSlash = require("../utils/addLeadingSlash");
-const createPackageURL = require("../utils/createPackageURL");
-const createSearch = require("../utils/createSearch");
-const getNpmPackageInfo = require("../utils/getNpmPackageInfo");
-const incrementCounter = require("../utils/incrementCounter");
+const addLeadingSlash = require('../utils/addLeadingSlash');
+const createPackageURL = require('../utils/createPackageURL');
+const createSearch = require('../utils/createSearch');
+const getNpmPackageInfo = require('../utils/getNpmPackageInfo');
+const incrementCounter = require('../utils/incrementCounter');
 
 function tagRedirect(req, res) {
-  const version = req.packageInfo["dist-tags"][req.packageVersion];
+  const version = req.packageInfo['dist-tags'][req.packageVersion];
 
   // Cache tag redirects for 1 minute.
   res
     .set({
-      "Cache-Control": "public, max-age=60",
-      "Cache-Tag": "redirect,tag-redirect"
+      'Cache-Control': 'public, max-age=60',
+      'Cache-Tag': 'redirect,tag-redirect'
     })
     .redirect(
       302,
@@ -31,8 +31,8 @@ function semverRedirect(req, res) {
     // Cache semver redirects for 1 minute.
     res
       .set({
-        "Cache-Control": "public, max-age=60",
-        "Cache-Tag": "redirect,semver-redirect"
+        'Cache-Control': 'public, max-age=60',
+        'Cache-Tag': 'redirect,semver-redirect'
       })
       .redirect(
         302,
@@ -41,7 +41,7 @@ function semverRedirect(req, res) {
   } else {
     res
       .status(404)
-      .type("text")
+      .type('text')
       .send(`Cannot find package ${req.packageSpec}`);
   }
 }
@@ -52,12 +52,12 @@ function filenameRedirect(req, res) {
     // See https://github.com/rollup/rollup/wiki/pkg.module
     filename =
       req.packageConfig.module ||
-      req.packageConfig["jsnext:main"] ||
-      "/index.js";
+      req.packageConfig['jsnext:main'] ||
+      '/index.js';
   } else if (
     req.query.main &&
     req.packageConfig[req.query.main] &&
-    typeof req.packageConfig[req.query.main] === "string"
+    typeof req.packageConfig[req.query.main] === 'string'
   ) {
     // Deprecated, see #63
     filename = req.packageConfig[req.query.main];
@@ -65,35 +65,35 @@ function filenameRedirect(req, res) {
     // Count which packages are using this so we can warn them when we
     // remove this functionality.
     incrementCounter(
-      "package-json-custom-main",
-      req.packageSpec + "?main=" + req.query.main,
+      'package-json-custom-main',
+      req.packageSpec + '?main=' + req.query.main,
       1
     );
   } else if (
     req.packageConfig.unpkg &&
-    typeof req.packageConfig.unpkg === "string"
+    typeof req.packageConfig.unpkg === 'string'
   ) {
     filename = req.packageConfig.unpkg;
   } else if (
     req.packageConfig.browser &&
-    typeof req.packageConfig.browser === "string"
+    typeof req.packageConfig.browser === 'string'
   ) {
     // Deprecated, see #63
     filename = req.packageConfig.browser;
 
     // Count which packages are using this so we can warn them when we
     // remove this functionality.
-    incrementCounter("package-json-browser-fallback", req.packageSpec, 1);
+    incrementCounter('package-json-browser-fallback', req.packageSpec, 1);
   } else {
-    filename = req.packageConfig.main || "/index.js";
+    filename = req.packageConfig.main || '/index.js';
   }
 
   // Redirect to the exact filename so relative imports
   // and URLs resolve correctly.
   res
     .set({
-      "Cache-Control": "public, max-age=31536000, immutable", // 1 year
-      "Cache-Tag": "redirect, filename-redirect"
+      'Cache-Control': 'public, max-age=31536000, immutable', // 1 year
+      'Cache-Tag': 'redirect, filename-redirect'
     })
     .redirect(
       302,
@@ -117,7 +117,7 @@ function fetchPackage(req, res, next) {
       if (packageInfo == null || packageInfo.versions == null) {
         return res
           .status(404)
-          .type("text")
+          .type('text')
           .send(`Cannot find package "${req.packageName}"`);
       }
 
@@ -126,7 +126,7 @@ function fetchPackage(req, res, next) {
 
       if (!req.packageConfig) {
         // Redirect to a fully-resolved version.
-        if (req.packageVersion in req.packageInfo["dist-tags"]) {
+        if (req.packageVersion in req.packageInfo['dist-tags']) {
           return tagRedirect(req, res);
         } else {
           return semverRedirect(req, res);
@@ -144,7 +144,7 @@ function fetchPackage(req, res, next) {
 
       return res
         .status(500)
-        .type("text")
+        .type('text')
         .send(`Cannot get info for package "${req.packageName}"`);
     }
   );
diff --git a/modules/middleware/findFile.js b/modules/middleware/findFile.js
index e1cc53f3..cde95b7b 100644
--- a/modules/middleware/findFile.js
+++ b/modules/middleware/findFile.js
@@ -1,19 +1,19 @@
-const path = require("path");
+const path = require('path');
 
-const addLeadingSlash = require("../utils/addLeadingSlash");
-const createPackageURL = require("../utils/createPackageURL");
-const createSearch = require("../utils/createSearch");
-const fetchNpmPackage = require("../utils/fetchNpmPackage");
-const getIntegrity = require("../utils/getIntegrity");
-const getContentType = require("../utils/getContentType");
+const addLeadingSlash = require('../utils/addLeadingSlash');
+const createPackageURL = require('../utils/createPackageURL');
+const createSearch = require('../utils/createSearch');
+const fetchNpmPackage = require('../utils/fetchNpmPackage');
+const getIntegrity = require('../utils/getIntegrity');
+const getContentType = require('../utils/getContentType');
 
 function indexRedirect(req, res, entry) {
   // Redirect to the index file so relative imports
   // resolve correctly.
   res
     .set({
-      "Cache-Control": "public, max-age=31536000, immutable", // 1 year
-      "Cache-Tag": "redirect, index-redirect"
+      'Cache-Control': 'public, max-age=31536000, immutable', // 1 year
+      'Cache-Tag': 'redirect, index-redirect'
     })
     .redirect(
       302,
@@ -27,7 +27,7 @@ function indexRedirect(req, res, entry) {
 }
 
 function stripLeadingSegment(name) {
-  return name.replace(/^[^/]+\/?/, "");
+  return name.replace(/^[^/]+\/?/, '');
 }
 
 function searchEntries(tarballStream, entryName, wantsIndex) {
@@ -35,14 +35,14 @@ function searchEntries(tarballStream, entryName, wantsIndex) {
     const entries = {};
     let foundEntry = null;
 
-    if (entryName === "") {
-      foundEntry = entries[""] = { name: "", type: "directory" };
+    if (entryName === '') {
+      foundEntry = entries[''] = { name: '', type: 'directory' };
     }
 
     tarballStream
-      .on("error", reject)
-      .on("finish", () => resolve({ entries, foundEntry }))
-      .on("entry", (header, stream, next) => {
+      .on('error', reject)
+      .on('finish', () => resolve({ entries, foundEntry }))
+      .on('entry', (header, stream, next) => {
         const entry = {
           // Most packages have header names that look like `package/index.js`
           // so we shorten that to just `index.js` here. A few packages use a
@@ -53,9 +53,9 @@ function searchEntries(tarballStream, entryName, wantsIndex) {
         };
 
         // We are only interested in files that match the entryName.
-        if (entry.type !== "file" || entry.name.indexOf(entryName) !== 0) {
+        if (entry.type !== 'file' || entry.name.indexOf(entryName) !== 0) {
           stream.resume();
-          stream.on("end", next);
+          stream.on('end', next);
           return;
         }
 
@@ -65,8 +65,8 @@ function searchEntries(tarballStream, entryName, wantsIndex) {
         // that are in this file's path. Some tarballs omit these entries
         // for some reason, so this is the brute force method.
         let dirname = path.dirname(entry.name);
-        while (dirname !== ".") {
-          const directoryEntry = { name: dirname, type: "directory" };
+        while (dirname !== '.') {
+          const directoryEntry = { name: dirname, type: 'directory' };
 
           if (!entries[dirname]) {
             entries[dirname] = directoryEntry;
@@ -94,7 +94,7 @@ function searchEntries(tarballStream, entryName, wantsIndex) {
 
         const chunks = [];
 
-        stream.on("data", chunk => chunks.push(chunk)).on("end", () => {
+        stream.on('data', chunk => chunks.push(chunk)).on('end', () => {
           const content = Buffer.concat(chunks);
 
           // Set some extra properties for files that we will
@@ -126,8 +126,8 @@ const trailingSlash = /\/$/;
 function findFile(req, res, next) {
   fetchNpmPackage(req.packageConfig).then(tarballStream => {
     const entryName = req.filename
-      .replace(trailingSlash, "")
-      .replace(leadingSlash, "");
+      .replace(trailingSlash, '')
+      .replace(leadingSlash, '');
     const wantsIndex = trailingSlash.test(req.filename);
 
     searchEntries(tarballStream, entryName, wantsIndex).then(
@@ -135,7 +135,7 @@ function findFile(req, res, next) {
         if (!foundEntry) {
           return res
             .status(404)
-            .type("text")
+            .type('text')
             .send(`Cannot find "${req.filename}" in ${req.packageSpec}`);
         }
 
@@ -144,17 +144,17 @@ function findFile(req, res, next) {
         // inside that directory. This is so our URLs work in a similar way
         // to require("lib") in node where it searches for `lib/index.js`
         // and `lib/index.json` when `lib` is a directory.
-        if (foundEntry.type === "directory" && !wantsIndex) {
+        if (foundEntry.type === 'directory' && !wantsIndex) {
           const indexEntry =
-            entries[path.join(entryName, "index.js")] ||
-            entries[path.join(entryName, "index.json")];
+            entries[path.join(entryName, 'index.js')] ||
+            entries[path.join(entryName, 'index.json')];
 
-          if (indexEntry && indexEntry.type === "file") {
+          if (indexEntry && indexEntry.type === 'file') {
             return indexRedirect(req, res, indexEntry);
           } else {
             return res
               .status(404)
-              .type("text")
+              .type('text')
               .send(
                 `Cannot find an index in "${req.filename}" in ${
                   req.packageSpec
diff --git a/modules/middleware/redirectLegacyURLs.js b/modules/middleware/redirectLegacyURLs.js
index 74e078d8..63517dd2 100644
--- a/modules/middleware/redirectLegacyURLs.js
+++ b/modules/middleware/redirectLegacyURLs.js
@@ -1,4 +1,4 @@
-const createSearch = require("../utils/createSearch");
+const createSearch = require('../utils/createSearch');
 
 /**
  * Redirect old URLs that we no longer support.
@@ -6,14 +6,14 @@ const createSearch = require("../utils/createSearch");
 function redirectLegacyURLs(req, res, next) {
   // Permanently redirect /_meta/path to /path?meta.
   if (req.path.match(/^\/_meta\//)) {
-    req.query.meta = "";
+    req.query.meta = '';
     return res.redirect(301, req.path.substr(6) + createSearch(req.query));
   }
 
   // Permanently redirect /path?json => /path?meta
   if (req.query.json != null) {
     delete req.query.json;
-    req.query.meta = "";
+    req.query.meta = '';
     return res.redirect(301, req.path + createSearch(req.query));
   }
 
diff --git a/modules/middleware/requireAuth.js b/modules/middleware/requireAuth.js
index aa88a9dc..b0e9c560 100644
--- a/modules/middleware/requireAuth.js
+++ b/modules/middleware/requireAuth.js
@@ -4,8 +4,8 @@
  */
 function requireAuth(scope) {
   let checkScopes;
-  if (scope.includes(".")) {
-    const parts = scope.split(".");
+  if (scope.includes('.')) {
+    const parts = scope.split('.');
     checkScopes = scopes =>
       parts.reduce((memo, part) => memo && memo[part], scopes) != null;
   } else {
@@ -20,11 +20,11 @@ function requireAuth(scope) {
     const user = req.user;
 
     if (!user) {
-      return res.status(403).send({ error: "Missing auth token" });
+      return res.status(403).send({ error: 'Missing auth token' });
     }
 
     if (!user.scopes || !checkScopes(user.scopes)) {
-      return res.status(403).send({ error: "Insufficient scopes" });
+      return res.status(403).send({ error: 'Insufficient scopes' });
     }
 
     if (req.auth) {
diff --git a/modules/middleware/staticAssets.js b/modules/middleware/staticAssets.js
index ad5d8d4b..ed2dc17f 100644
--- a/modules/middleware/staticAssets.js
+++ b/modules/middleware/staticAssets.js
@@ -1,7 +1,7 @@
-const fs = require("fs");
-const invariant = require("invariant");
+const fs = require('fs');
+const invariant = require('invariant');
 
-const createAssets = require("./utils/createAssets");
+const createAssets = require('./utils/createAssets');
 
 /**
  * An express middleware that sets req.assets from the build
@@ -10,12 +10,12 @@ const createAssets = require("./utils/createAssets");
 function staticAssets(webpackStatsFile) {
   let stats;
   try {
-    stats = JSON.parse(fs.readFileSync(webpackStatsFile, "utf8"));
+    stats = JSON.parse(fs.readFileSync(webpackStatsFile, 'utf8'));
   } catch (error) {
     invariant(
       false,
-      "staticAssets middleware cannot read the build stats in %s; " +
-        "run the `build` script before starting the server",
+      'staticAssets middleware cannot read the build stats in %s; ' +
+        'run the `build` script before starting the server',
       webpackStatsFile
     );
   }
diff --git a/modules/middleware/userToken.js b/modules/middleware/userToken.js
index afd8bddc..10f38ba3 100644
--- a/modules/middleware/userToken.js
+++ b/modules/middleware/userToken.js
@@ -1,9 +1,9 @@
-const AuthAPI = require("../AuthAPI");
+const AuthAPI = require('../AuthAPI');
 
 const ReadMethods = { GET: true, HEAD: true };
 
 function decodeBase64(string) {
-  return Buffer.from(string, "base64").toString();
+  return Buffer.from(string, 'base64').toString();
 }
 
 /**
@@ -14,7 +14,7 @@ function userToken(req, res, next) {
     return next();
   }
 
-  const auth = req.get("Authorization");
+  const auth = req.get('Authorization');
   const token = auth
     ? decodeBase64(auth)
     : (ReadMethods[req.method] ? req.query : req.body).token;
@@ -30,7 +30,7 @@ function userToken(req, res, next) {
       next();
     },
     error => {
-      if (error.name === "JsonWebTokenError") {
+      if (error.name === 'JsonWebTokenError') {
         res.status(403).send({
           error: `Bad auth token: ${error.message}`
         });
@@ -38,7 +38,7 @@ function userToken(req, res, next) {
         console.error(error);
 
         res.status(500).send({
-          error: "Unable to verify auth"
+          error: 'Unable to verify auth'
         });
       }
     }
diff --git a/modules/middleware/utils/createAssets.js b/modules/middleware/utils/createAssets.js
index 08e364aa..dfa9084e 100644
--- a/modules/middleware/utils/createAssets.js
+++ b/modules/middleware/utils/createAssets.js
@@ -12,7 +12,7 @@ function createAssets(webpackStats) {
   /**
    * Returns an array of URLs to all assets in the given chunks.
    */
-  const getAll = (chunks = ["main"]) =>
+  const getAll = (chunks = ['main']) =>
     (Array.isArray(chunks) ? chunks : [chunks])
       .reduce((memo, chunk) => memo.concat(assetsByChunkName[chunk] || []), [])
       .map(createURL);
diff --git a/modules/middleware/validatePackageName.js b/modules/middleware/validatePackageName.js
index e9b48c3d..116d69e9 100644
--- a/modules/middleware/validatePackageName.js
+++ b/modules/middleware/validatePackageName.js
@@ -1,4 +1,4 @@
-const validateNpmPackageName = require("validate-npm-package-name");
+const validateNpmPackageName = require('validate-npm-package-name');
 
 const hexValue = /^[a-f0-9]+$/i;
 
@@ -13,18 +13,18 @@ function validatePackageName(req, res, next) {
   if (isHash(req.packageName)) {
     return res
       .status(403)
-      .type("text")
+      .type('text')
       .send(`Invalid package name "${req.packageName}" (cannot be a hash)`);
   }
 
   const errors = validateNpmPackageName(req.packageName).errors;
 
   if (errors) {
-    const reason = errors.join(", ");
+    const reason = errors.join(', ');
 
     return res
       .status(403)
-      .type("text")
+      .type('text')
       .send(`Invalid package name "${req.packageName}" (${reason})`);
   }
 
diff --git a/modules/middleware/validatePackageURL.js b/modules/middleware/validatePackageURL.js
index 9d8d6a02..563b627b 100644
--- a/modules/middleware/validatePackageURL.js
+++ b/modules/middleware/validatePackageURL.js
@@ -1,4 +1,4 @@
-const parsePackageURL = require("../utils/parsePackageURL");
+const parsePackageURL = require('../utils/parsePackageURL');
 
 /**
  * Parse the URL and add various properties to the request object to
diff --git a/modules/middleware/validateQuery.js b/modules/middleware/validateQuery.js
index f9b524e0..21a758e1 100644
--- a/modules/middleware/validateQuery.js
+++ b/modules/middleware/validateQuery.js
@@ -1,4 +1,4 @@
-const createSearch = require("../utils/createSearch");
+const createSearch = require('../utils/createSearch');
 
 const knownQueryParams = {
   main: true, // Deprecated, see #63
diff --git a/modules/plugins/__tests__/unpkgRewrite-test.js b/modules/plugins/__tests__/unpkgRewrite-test.js
index 737e428e..0b504c05 100644
--- a/modules/plugins/__tests__/unpkgRewrite-test.js
+++ b/modules/plugins/__tests__/unpkgRewrite-test.js
@@ -1,5 +1,5 @@
-const babel = require("babel-core");
-const unpkgRewrite = require("../unpkgRewrite");
+const babel = require('babel-core');
+const unpkgRewrite = require('../unpkgRewrite');
 
 const testCases = [
   {
@@ -66,13 +66,13 @@ const testCases = [
 ];
 
 const dependencies = {
-  react: "15.6.1",
-  "@angular/router": "4.3.5",
-  "lodash.map": "4.6.0",
-  pn: "1.0.0"
+  react: '15.6.1',
+  '@angular/router': '4.3.5',
+  'lodash.map': '4.6.0',
+  pn: '1.0.0'
 };
 
-describe("Rewriting imports/exports", () => {
+describe('Rewriting imports/exports', () => {
   testCases.forEach(testCase => {
     it(`successfully rewrites '${testCase.before}'`, () => {
       const result = babel.transform(testCase.before, {
diff --git a/modules/plugins/unpkgRewrite.js b/modules/plugins/unpkgRewrite.js
index d411efcc..9280dd43 100644
--- a/modules/plugins/unpkgRewrite.js
+++ b/modules/plugins/unpkgRewrite.js
@@ -1,7 +1,7 @@
-const URL = require("whatwg-url");
-const warning = require("warning");
+const URL = require('whatwg-url');
+const warning = require('warning');
 
-const origin = require("../serverConfig").origin;
+const origin = require('../serverConfig').origin;
 
 const bareIdentifierFormat = /^((?:@[^/]+\/)?[^/]+)(\/.*)?$/;
 
@@ -10,7 +10,7 @@ function isValidURL(value) {
 }
 
 function isProbablyURLWithoutProtocol(value) {
-  return value.substr(0, 2) === "//";
+  return value.substr(0, 2) === '//';
 }
 
 function isAbsoluteURL(value) {
@@ -18,7 +18,7 @@ function isAbsoluteURL(value) {
 }
 
 function isBareIdentifier(value) {
-  return value.charAt(0) !== "." && value.charAt(0) !== "/";
+  return value.charAt(0) !== '.' && value.charAt(0) !== '/';
 }
 
 function rewriteValue(/* StringLiteral */ node, dependencies) {
@@ -30,7 +30,7 @@ function rewriteValue(/* StringLiteral */ node, dependencies) {
     // "bare" identifier
     const match = bareIdentifierFormat.exec(node.value);
     const packageName = match[1];
-    const file = match[2] || "";
+    const file = match[2] || '';
 
     warning(
       dependencies[packageName],
@@ -38,7 +38,7 @@ function rewriteValue(/* StringLiteral */ node, dependencies) {
       packageName
     );
 
-    const version = dependencies[packageName] || "latest";
+    const version = dependencies[packageName] || 'latest';
 
     node.value = `${origin}/${packageName}@${version}${file}?module`;
   } else {
@@ -51,16 +51,16 @@ function unpkgRewrite(dependencies = {}) {
   return {
     manipulateOptions(opts, parserOpts) {
       parserOpts.plugins.push(
-        "dynamicImport",
-        "exportDefaultFrom",
-        "exportNamespaceFrom",
-        "importMeta"
+        'dynamicImport',
+        'exportDefaultFrom',
+        'exportNamespaceFrom',
+        'importMeta'
       );
     },
 
     visitor: {
       CallExpression(path) {
-        if (path.node.callee.type !== "Import") {
+        if (path.node.callee.type !== 'Import') {
           // Some other function call, not import();
           return;
         }
diff --git a/modules/secretKey.js b/modules/secretKey.js
index 0b1d62b1..cc3be3c8 100644
--- a/modules/secretKey.js
+++ b/modules/secretKey.js
@@ -1,19 +1,19 @@
-const fs = require("fs");
-const path = require("path");
-const forge = require("node-forge");
-const invariant = require("invariant");
+const fs = require('fs');
+const path = require('path');
+const forge = require('node-forge');
+const invariant = require('invariant');
 
 let secretKey;
-if (process.env.NODE_ENV === "production") {
+if (process.env.NODE_ENV === 'production') {
   invariant(
     process.env.PRIVATE_KEY,
-    "Missing $PRIVATE_KEY environment variable"
+    'Missing $PRIVATE_KEY environment variable'
   );
 
   secretKey = {
     public: fs.readFileSync(
-      path.resolve(__dirname, "../secret_key.pub"),
-      "utf8"
+      path.resolve(__dirname, '../secret_key.pub'),
+      'utf8'
     ),
     private: process.env.PRIVATE_KEY
   };
diff --git a/modules/serverConfig.js b/modules/serverConfig.js
index d7c3803b..72e3707b 100644
--- a/modules/serverConfig.js
+++ b/modules/serverConfig.js
@@ -1,9 +1,9 @@
 exports.port = parseInt(process.env.PORT, 10) || 5000;
 
 exports.origin =
-  process.env.NODE_ENV === "production" || process.env.NODE_ENV === "test"
-    ? "https://unpkg.com"
+  process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'test'
+    ? 'https://unpkg.com'
     : `http://localhost:${exports.port}`;
 
 exports.registryURL =
-  process.env.NPM_REGISTRY_URL || "https://registry.npmjs.org";
+  process.env.NPM_REGISTRY_URL || 'https://registry.npmjs.org';
diff --git a/modules/utils/__tests__/createSearch-test.js b/modules/utils/__tests__/createSearch-test.js
index 113a89e3..32c427b2 100644
--- a/modules/utils/__tests__/createSearch-test.js
+++ b/modules/utils/__tests__/createSearch-test.js
@@ -1,15 +1,15 @@
-const createSearch = require("../createSearch");
+const createSearch = require('../createSearch');
 
-describe("createSearch", () => {
-  it("omits the trailing = for empty string values", () => {
-    expect(createSearch({ a: "a", b: "" })).toEqual("?a=a&b");
+describe('createSearch', () => {
+  it('omits the trailing = for empty string values', () => {
+    expect(createSearch({ a: 'a', b: '' })).toEqual('?a=a&b');
   });
 
-  it("sorts keys", () => {
-    expect(createSearch({ b: "b", a: "a", c: "c" })).toEqual("?a=a&b=b&c=c");
+  it('sorts keys', () => {
+    expect(createSearch({ b: 'b', a: 'a', c: 'c' })).toEqual('?a=a&b=b&c=c');
   });
 
-  it("returns an empty string when there are no params", () => {
-    expect(createSearch({})).toEqual("");
+  it('returns an empty string when there are no params', () => {
+    expect(createSearch({})).toEqual('');
   });
 });
diff --git a/modules/utils/__tests__/getContentType-test.js b/modules/utils/__tests__/getContentType-test.js
index f59e360b..c6ca5b78 100644
--- a/modules/utils/__tests__/getContentType-test.js
+++ b/modules/utils/__tests__/getContentType-test.js
@@ -1,39 +1,39 @@
-const getContentType = require("../getContentType");
+const getContentType = require('../getContentType');
 
-it("gets a content type of text/plain for LICENSE|README|CHANGES|AUTHORS|Makefile", () => {
-  expect(getContentType("AUTHORS")).toBe("text/plain");
-  expect(getContentType("CHANGES")).toBe("text/plain");
-  expect(getContentType("LICENSE")).toBe("text/plain");
-  expect(getContentType("Makefile")).toBe("text/plain");
-  expect(getContentType("PATENTS")).toBe("text/plain");
-  expect(getContentType("README")).toBe("text/plain");
+it('gets a content type of text/plain for LICENSE|README|CHANGES|AUTHORS|Makefile', () => {
+  expect(getContentType('AUTHORS')).toBe('text/plain');
+  expect(getContentType('CHANGES')).toBe('text/plain');
+  expect(getContentType('LICENSE')).toBe('text/plain');
+  expect(getContentType('Makefile')).toBe('text/plain');
+  expect(getContentType('PATENTS')).toBe('text/plain');
+  expect(getContentType('README')).toBe('text/plain');
 });
 
-it("gets a content type of text/plain for .*rc files", () => {
-  expect(getContentType(".eslintrc")).toBe("text/plain");
-  expect(getContentType(".babelrc")).toBe("text/plain");
-  expect(getContentType(".anythingrc")).toBe("text/plain");
+it('gets a content type of text/plain for .*rc files', () => {
+  expect(getContentType('.eslintrc')).toBe('text/plain');
+  expect(getContentType('.babelrc')).toBe('text/plain');
+  expect(getContentType('.anythingrc')).toBe('text/plain');
 });
 
-it("gets a content type of text/plain for .git* files", () => {
-  expect(getContentType(".gitignore")).toBe("text/plain");
-  expect(getContentType(".gitanything")).toBe("text/plain");
+it('gets a content type of text/plain for .git* files', () => {
+  expect(getContentType('.gitignore')).toBe('text/plain');
+  expect(getContentType('.gitanything')).toBe('text/plain');
 });
 
-it("gets a content type of text/plain for .*ignore files", () => {
-  expect(getContentType(".eslintignore")).toBe("text/plain");
-  expect(getContentType(".anythingignore")).toBe("text/plain");
+it('gets a content type of text/plain for .*ignore files', () => {
+  expect(getContentType('.eslintignore')).toBe('text/plain');
+  expect(getContentType('.anythingignore')).toBe('text/plain');
 });
 
-it("gets a content type of text/plain for .ts files", () => {
-  expect(getContentType("app.ts")).toBe("text/plain");
-  expect(getContentType("app.d.ts")).toBe("text/plain");
+it('gets a content type of text/plain for .ts files', () => {
+  expect(getContentType('app.ts')).toBe('text/plain');
+  expect(getContentType('app.d.ts')).toBe('text/plain');
 });
 
-it("gets a content type of text/plain for .flow files", () => {
-  expect(getContentType("app.js.flow")).toBe("text/plain");
+it('gets a content type of text/plain for .flow files', () => {
+  expect(getContentType('app.js.flow')).toBe('text/plain');
 });
 
-it("gets a content type of text/plain for .lock files", () => {
-  expect(getContentType("yarn.lock")).toBe("text/plain");
+it('gets a content type of text/plain for .lock files', () => {
+  expect(getContentType('yarn.lock')).toBe('text/plain');
 });
diff --git a/modules/utils/__tests__/parsePackageURL-test.js b/modules/utils/__tests__/parsePackageURL-test.js
index aa94633a..7318db66 100644
--- a/modules/utils/__tests__/parsePackageURL-test.js
+++ b/modules/utils/__tests__/parsePackageURL-test.js
@@ -1,80 +1,80 @@
-const parsePackageURL = require("../parsePackageURL");
+const parsePackageURL = require('../parsePackageURL');
 
-describe("parsePackageURL", () => {
-  it("parses plain packages", () => {
-    expect(parsePackageURL("/history@1.0.0/umd/history.min.js")).toEqual({
-      pathname: "/history@1.0.0/umd/history.min.js",
-      search: "",
+describe('parsePackageURL', () => {
+  it('parses plain packages', () => {
+    expect(parsePackageURL('/history@1.0.0/umd/history.min.js')).toEqual({
+      pathname: '/history@1.0.0/umd/history.min.js',
+      search: '',
       query: {},
-      packageName: "history",
-      packageVersion: "1.0.0",
-      filename: "/umd/history.min.js"
+      packageName: 'history',
+      packageVersion: '1.0.0',
+      filename: '/umd/history.min.js'
     });
   });
 
-  it("parses plain packages with a hyphen in the name", () => {
-    expect(parsePackageURL("/query-string@5.0.0/index.js")).toEqual({
-      pathname: "/query-string@5.0.0/index.js",
-      search: "",
+  it('parses plain packages with a hyphen in the name', () => {
+    expect(parsePackageURL('/query-string@5.0.0/index.js')).toEqual({
+      pathname: '/query-string@5.0.0/index.js',
+      search: '',
       query: {},
-      packageName: "query-string",
-      packageVersion: "5.0.0",
-      filename: "/index.js"
+      packageName: 'query-string',
+      packageVersion: '5.0.0',
+      filename: '/index.js'
     });
   });
 
-  it("parses plain packages with no version specified", () => {
-    expect(parsePackageURL("/query-string/index.js")).toEqual({
-      pathname: "/query-string/index.js",
-      search: "",
+  it('parses plain packages with no version specified', () => {
+    expect(parsePackageURL('/query-string/index.js')).toEqual({
+      pathname: '/query-string/index.js',
+      search: '',
       query: {},
-      packageName: "query-string",
-      packageVersion: "latest",
-      filename: "/index.js"
+      packageName: 'query-string',
+      packageVersion: 'latest',
+      filename: '/index.js'
     });
   });
 
-  it("parses plain packages with version spec", () => {
-    expect(parsePackageURL("/query-string@>=4.0.0/index.js")).toEqual({
-      pathname: "/query-string@>=4.0.0/index.js",
-      search: "",
+  it('parses plain packages with version spec', () => {
+    expect(parsePackageURL('/query-string@>=4.0.0/index.js')).toEqual({
+      pathname: '/query-string@>=4.0.0/index.js',
+      search: '',
       query: {},
-      packageName: "query-string",
-      packageVersion: ">=4.0.0",
-      filename: "/index.js"
+      packageName: 'query-string',
+      packageVersion: '>=4.0.0',
+      filename: '/index.js'
     });
   });
 
-  it("parses scoped packages", () => {
-    expect(parsePackageURL("/@angular/router@4.3.3/src/index.d.ts")).toEqual({
-      pathname: "/@angular/router@4.3.3/src/index.d.ts",
-      search: "",
+  it('parses scoped packages', () => {
+    expect(parsePackageURL('/@angular/router@4.3.3/src/index.d.ts')).toEqual({
+      pathname: '/@angular/router@4.3.3/src/index.d.ts',
+      search: '',
       query: {},
-      packageName: "@angular/router",
-      packageVersion: "4.3.3",
-      filename: "/src/index.d.ts"
+      packageName: '@angular/router',
+      packageVersion: '4.3.3',
+      filename: '/src/index.d.ts'
     });
   });
 
-  it("parses package names with a period in them", () => {
-    expect(parsePackageURL("/index.js")).toEqual({
-      pathname: "/index.js",
-      search: "",
+  it('parses package names with a period in them', () => {
+    expect(parsePackageURL('/index.js')).toEqual({
+      pathname: '/index.js',
+      search: '',
       query: {},
-      packageName: "index.js",
-      packageVersion: "latest",
-      filename: ""
+      packageName: 'index.js',
+      packageVersion: 'latest',
+      filename: ''
     });
   });
 
-  it("parses valid query parameters", () => {
-    expect(parsePackageURL("/history?main=browser")).toEqual({
-      pathname: "/history",
-      search: "?main=browser",
-      query: { main: "browser" },
-      packageName: "history",
-      packageVersion: "latest",
-      filename: ""
+  it('parses valid query parameters', () => {
+    expect(parsePackageURL('/history?main=browser')).toEqual({
+      pathname: '/history',
+      search: '?main=browser',
+      query: { main: 'browser' },
+      packageName: 'history',
+      packageVersion: 'latest',
+      filename: ''
     });
   });
 });
diff --git a/modules/utils/addLeadingSlash.js b/modules/utils/addLeadingSlash.js
index c8f8357c..2eda4e41 100644
--- a/modules/utils/addLeadingSlash.js
+++ b/modules/utils/addLeadingSlash.js
@@ -1,5 +1,5 @@
 function addLeadingSlash(name) {
-  return name.charAt(0) === "/" ? name : "/" + name;
+  return name.charAt(0) === '/' ? name : '/' + name;
 }
 
 module.exports = addLeadingSlash;
diff --git a/modules/utils/bufferStream.js b/modules/utils/bufferStream.js
index 8a709fde..d5cdda8b 100644
--- a/modules/utils/bufferStream.js
+++ b/modules/utils/bufferStream.js
@@ -3,9 +3,9 @@ function bufferStream(stream) {
     const chunks = [];
 
     stream
-      .on("error", reject)
-      .on("data", chunk => chunks.push(chunk))
-      .on("end", () => resolve(Buffer.concat(chunks)));
+      .on('error', reject)
+      .on('data', chunk => chunks.push(chunk))
+      .on('end', () => resolve(Buffer.concat(chunks)));
   });
 }
 
diff --git a/modules/utils/cache.js b/modules/utils/cache.js
index 4a5734f1..98cf1b79 100644
--- a/modules/utils/cache.js
+++ b/modules/utils/cache.js
@@ -1,9 +1,9 @@
-const redis = require("redis");
+const redis = require('redis');
 
 redis.debug_mode = process.env.DEBUG_REDIS != null;
 
 const client = redis.createClient(
-  process.env.CACHE_URL || process.env.OPENREDIS_URL || "redis://localhost:6379"
+  process.env.CACHE_URL || process.env.OPENREDIS_URL || 'redis://localhost:6379'
 );
 
 module.exports = client;
diff --git a/modules/utils/createSearch.js b/modules/utils/createSearch.js
index 33f2ec2e..c27b5e74 100644
--- a/modules/utils/createSearch.js
+++ b/modules/utils/createSearch.js
@@ -3,14 +3,14 @@ function createSearch(query) {
   const params = keys.reduce(
     (memo, key) =>
       memo.concat(
-        query[key] === ""
+        query[key] === ''
           ? key // Omit the trailing "=" from key=
           : `${key}=${encodeURIComponent(query[key])}`
       ),
     []
   );
 
-  return params.length ? `?${params.join("&")}` : "";
+  return params.length ? `?${params.join('&')}` : '';
 }
 
 module.exports = createSearch;
diff --git a/modules/utils/data.js b/modules/utils/data.js
index ecd33e7a..dbe7ecad 100644
--- a/modules/utils/data.js
+++ b/modules/utils/data.js
@@ -1,9 +1,9 @@
-const redis = require("redis");
+const redis = require('redis');
 
 redis.debug_mode = process.env.DEBUG_REDIS != null;
 
 const client = redis.createClient(
-  process.env.DATA_URL || process.env.OPENREDIS_URL || "redis://localhost:6379"
+  process.env.DATA_URL || process.env.OPENREDIS_URL || 'redis://localhost:6379'
 );
 
 module.exports = client;
diff --git a/modules/utils/fetchNpmPackage.js b/modules/utils/fetchNpmPackage.js
index 8dfbb7a2..444f0a1b 100644
--- a/modules/utils/fetchNpmPackage.js
+++ b/modules/utils/fetchNpmPackage.js
@@ -1,18 +1,18 @@
-const url = require("url");
-const https = require("https");
-const gunzip = require("gunzip-maybe");
-const tar = require("tar-stream");
+const url = require('url');
+const https = require('https');
+const gunzip = require('gunzip-maybe');
+const tar = require('tar-stream');
 
-const bufferStream = require("./bufferStream");
-const agent = require("./registryAgent");
-const logging = require("./logging");
+const bufferStream = require('./bufferStream');
+const agent = require('./registryAgent');
+const logging = require('./logging');
 
 function fetchNpmPackage(packageConfig) {
   return new Promise((resolve, reject) => {
     const tarballURL = packageConfig.dist.tarball;
 
     logging.debug(
-      "Fetching package for %s from %s",
+      'Fetching package for %s from %s',
       packageConfig.name,
       tarballURL
     );
@@ -31,7 +31,7 @@ function fetchNpmPackage(packageConfig) {
         } else {
           bufferStream(res).then(data => {
             const spec = `${packageConfig.name}@${packageConfig.version}`;
-            const content = data.toString("utf-8");
+            const content = data.toString('utf-8');
             const error = new Error(
               `Failed to fetch tarball for ${spec}\nstatus: ${
                 res.statusCode
@@ -42,7 +42,7 @@ function fetchNpmPackage(packageConfig) {
           });
         }
       })
-      .on("error", reject);
+      .on('error', reject);
   });
 }
 
diff --git a/modules/utils/fetchNpmPackageInfo.js b/modules/utils/fetchNpmPackageInfo.js
index c8592a6d..f14d6bc1 100644
--- a/modules/utils/fetchNpmPackageInfo.js
+++ b/modules/utils/fetchNpmPackageInfo.js
@@ -1,10 +1,10 @@
-const url = require("url");
-const https = require("https");
+const url = require('url');
+const https = require('https');
 
-const serverConfig = require("../serverConfig");
-const bufferStream = require("./bufferStream");
-const agent = require("./registryAgent");
-const logging = require("./logging");
+const serverConfig = require('../serverConfig');
+const bufferStream = require('./bufferStream');
+const agent = require('./registryAgent');
+const logging = require('./logging');
 
 function parseJSON(res) {
   return bufferStream(res).then(JSON.parse);
@@ -13,13 +13,13 @@ function parseJSON(res) {
 function fetchNpmPackageInfo(packageName) {
   return new Promise((resolve, reject) => {
     const encodedPackageName =
-      packageName.charAt(0) === "@"
+      packageName.charAt(0) === '@'
         ? `@${encodeURIComponent(packageName.substring(1))}`
         : encodeURIComponent(packageName);
 
     const infoURL = `${serverConfig.registryURL}/${encodedPackageName}`;
 
-    logging.debug("Fetching package info for %s from %s", packageName, infoURL);
+    logging.debug('Fetching package info for %s from %s', packageName, infoURL);
 
     const { hostname, pathname } = url.parse(infoURL);
     const options = {
@@ -27,7 +27,7 @@ function fetchNpmPackageInfo(packageName) {
       hostname: hostname,
       path: pathname,
       headers: {
-        Accept: "application/json"
+        Accept: 'application/json'
       }
     };
 
@@ -39,7 +39,7 @@ function fetchNpmPackageInfo(packageName) {
           resolve(null);
         } else {
           bufferStream(res).then(data => {
-            const content = data.toString("utf-8");
+            const content = data.toString('utf-8');
             const error = new Error(
               `Failed to fetch info for ${packageName}\nstatus: ${
                 res.statusCode
@@ -50,7 +50,7 @@ function fetchNpmPackageInfo(packageName) {
           });
         }
       })
-      .on("error", reject);
+      .on('error', reject);
   });
 }
 
diff --git a/modules/utils/getContentType.js b/modules/utils/getContentType.js
index d85b66a0..dcc10f7b 100644
--- a/modules/utils/getContentType.js
+++ b/modules/utils/getContentType.js
@@ -1,22 +1,22 @@
-const mime = require("mime");
+const mime = require('mime');
 
 mime.define({
-  "text/plain": [
-    "authors",
-    "changes",
-    "license",
-    "makefile",
-    "patents",
-    "readme",
-    "ts",
-    "flow"
+  'text/plain': [
+    'authors',
+    'changes',
+    'license',
+    'makefile',
+    'patents',
+    'readme',
+    'ts',
+    'flow'
   ]
 });
 
 const textFiles = /\/?(\.[a-z]*rc|\.git[a-z]*|\.[a-z]*ignore|\.lock)$/i;
 
 function getContentType(file) {
-  return textFiles.test(file) ? "text/plain" : mime.lookup(file);
+  return textFiles.test(file) ? 'text/plain' : mime.lookup(file);
 }
 
 module.exports = getContentType;
diff --git a/modules/utils/getContentTypeHeader.js b/modules/utils/getContentTypeHeader.js
index adf03a46..a42402f4 100644
--- a/modules/utils/getContentTypeHeader.js
+++ b/modules/utils/getContentTypeHeader.js
@@ -1,5 +1,5 @@
 function getContentTypeHeader(type) {
-  return type === "application/javascript" ? type + "; charset=utf-8" : type;
+  return type === 'application/javascript' ? type + '; charset=utf-8' : type;
 }
 
 module.exports = getContentTypeHeader;
diff --git a/modules/utils/getIntegrity.js b/modules/utils/getIntegrity.js
index d6132ffb..1aa98378 100644
--- a/modules/utils/getIntegrity.js
+++ b/modules/utils/getIntegrity.js
@@ -1,7 +1,7 @@
-const SRIToolbox = require("sri-toolbox");
+const SRIToolbox = require('sri-toolbox');
 
 function getIntegrity(data) {
-  return SRIToolbox.generate({ algorithms: ["sha384"] }, data);
+  return SRIToolbox.generate({ algorithms: ['sha384'] }, data);
 }
 
 module.exports = getIntegrity;
diff --git a/modules/utils/getNpmPackageInfo.js b/modules/utils/getNpmPackageInfo.js
index 77b730d9..1ba71939 100644
--- a/modules/utils/getNpmPackageInfo.js
+++ b/modules/utils/getNpmPackageInfo.js
@@ -1,5 +1,5 @@
-const cache = require("./cache");
-const fetchNpmPackageInfo = require("./fetchNpmPackageInfo");
+const cache = require('./cache');
+const fetchNpmPackageInfo = require('./fetchNpmPackageInfo');
 
 const notFound = 0;
 
diff --git a/modules/utils/incrementCounter.js b/modules/utils/incrementCounter.js
index 2e599d58..66a144b0 100644
--- a/modules/utils/incrementCounter.js
+++ b/modules/utils/incrementCounter.js
@@ -1,4 +1,4 @@
-const db = require("./data");
+const db = require('./data');
 
 function incrementCounter(counter, key, by = 1) {
   return new Promise((resolve, reject) => {
diff --git a/modules/utils/isValidPackageName.js b/modules/utils/isValidPackageName.js
index a6987554..beb398e1 100644
--- a/modules/utils/isValidPackageName.js
+++ b/modules/utils/isValidPackageName.js
@@ -1,4 +1,4 @@
-const validateNpmPackageName = require("validate-npm-package-name");
+const validateNpmPackageName = require('validate-npm-package-name');
 
 function isValidPackageName(packageName) {
   return validateNpmPackageName(packageName).errors == null;
diff --git a/modules/utils/logging.js b/modules/utils/logging.js
index 4dac79db..e0589377 100644
--- a/modules/utils/logging.js
+++ b/modules/utils/logging.js
@@ -4,11 +4,11 @@ function noop() {}
 
 let debug, info, warn;
 
-if (process.env.LOG_LEVEL === "none") {
+if (process.env.LOG_LEVEL === 'none') {
   debug = info = warn = noop;
-} else if (process.env.LOG_LEVEL === "debug") {
+} else if (process.env.LOG_LEVEL === 'debug') {
   debug = info = warn = log;
-} else if (process.env.LOG_LEVEL === "warn") {
+} else if (process.env.LOG_LEVEL === 'warn') {
   debug = info = noop;
   warn = log;
 } else {
diff --git a/modules/utils/parsePackageURL.js b/modules/utils/parsePackageURL.js
index f2e257b0..92206399 100644
--- a/modules/utils/parsePackageURL.js
+++ b/modules/utils/parsePackageURL.js
@@ -1,4 +1,4 @@
-const url = require("url");
+const url = require('url');
 
 const packageURLFormat = /^\/((?:@[^/@]+\/)?[^/@]+)(?:@([^/]+))?(\/.*)?$/;
 
@@ -11,7 +11,7 @@ function decodeParam(param) {
     }
   }
 
-  return "";
+  return '';
 }
 
 function parsePackageURL(originalURL) {
@@ -24,13 +24,13 @@ function parsePackageURL(originalURL) {
   }
 
   const packageName = match[1];
-  const packageVersion = decodeParam(match[2]) || "latest";
+  const packageVersion = decodeParam(match[2]) || 'latest';
   const filename = decodeParam(match[3]);
 
   return {
     // If the URL is /@scope/name@version/file.js?main=browser:
     pathname, // /@scope/name@version/path.js
-    search: search || "", // ?main=browser
+    search: search || '', // ?main=browser
     query, // { main: 'browser' }
     packageName, // @scope/name
     packageVersion, // version
diff --git a/modules/utils/registryAgent.js b/modules/utils/registryAgent.js
index 779dc529..e3e92bb3 100644
--- a/modules/utils/registryAgent.js
+++ b/modules/utils/registryAgent.js
@@ -1,4 +1,4 @@
-const https = require("https");
+const https = require('https');
 
 const agent = new https.Agent({
   keepAlive: true
diff --git a/modules/utils/renderPage.js b/modules/utils/renderPage.js
index acfe4a58..33cb48a6 100644
--- a/modules/utils/renderPage.js
+++ b/modules/utils/renderPage.js
@@ -1,7 +1,7 @@
-const React = require("react");
-const ReactDOMServer = require("react-dom/server");
+const React = require('react');
+const ReactDOMServer = require('react-dom/server');
 
-const doctype = "<!DOCTYPE html>";
+const doctype = '<!DOCTYPE html>';
 
 function renderPage(page, props) {
   const element = React.createElement(page, props);
diff --git a/modules/utils/rewriteBareModuleIdentifiers.js b/modules/utils/rewriteBareModuleIdentifiers.js
index 603d7bdc..9733a31a 100644
--- a/modules/utils/rewriteBareModuleIdentifiers.js
+++ b/modules/utils/rewriteBareModuleIdentifiers.js
@@ -1,6 +1,6 @@
-const babel = require("babel-core");
+const babel = require('babel-core');
 
-const unpkgRewrite = require("../plugins/unpkgRewrite");
+const unpkgRewrite = require('../plugins/unpkgRewrite');
 
 function rewriteBareModuleIdentifiers(code, packageConfig) {
   const dependencies = Object.assign(