From d33014697e602b035a9187711676b410183d8887 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 15:46:55 -0500
Subject: [PATCH 1/7] tests(lib): peer dep validator

---
 package.json                                |  10 +-
 src/index.ts                                |   6 +-
 src/lib/{package.ts => peerDepValidator.ts} | 148 +++++++++-------
 tests/lib/package.spec.ts                   | 183 ++++++++++++++++++++
 tests/test.spec.ts                          |   3 -
 tests/tsconfig.json                         |   6 +-
 yarn.lock                                   |  96 +++++++++-
 7 files changed, 374 insertions(+), 78 deletions(-)
 rename src/lib/{package.ts => peerDepValidator.ts} (54%)
 create mode 100644 tests/lib/package.spec.ts
 delete mode 100644 tests/test.spec.ts

diff --git a/package.json b/package.json
index 44d40e03f..3ca1f1fd8 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "dev": "tsc --build --watch",
     "build": "yarn clean && tsc",
     "test": "jest",
+    "tdd": "jest --watch",
     "clean": "rm -rf dist && rm -rf node_modules/.cache",
     "release:pr": "dripip pr",
     "release:canary": "dripip preview",
@@ -21,13 +22,19 @@
   },
   "devDependencies": {
     "@prisma-labs/prettier-config": "0.1.0",
+    "@prisma/client": "2.17.0",
     "@types/jest": "26.0.20",
+    "@types/lodash": "^4.14.168",
     "@types/semver": "^7.3.4",
     "dripip": "0.10.0",
+    "execa": "^5.0.0",
+    "fs-jetpack": "^4.1.0",
     "jest": "26.6.3",
     "jest-watch-typeahead": "0.6.1",
+    "lodash": "^4.17.20",
     "nexus": "^1.0.0",
     "prettier": "2.2.1",
+    "prisma": "2.17.0",
     "ts-jest": "26.5.1",
     "ts-node": "^9.1.1",
     "type-fest": "^0.21.1",
@@ -35,10 +42,11 @@
   },
   "prettier": "@prisma-labs/prettier-config",
   "peerDependencies": {
-    "@prisma/client": "^2.17.0",
+    "@prisma/client": "2.17.x",
     "nexus": "^1.0.0"
   },
   "dependencies": {
+    "endent": "^2.0.1",
     "kleur": "^4.1.4",
     "semver": "^7.3.4"
   }
diff --git a/src/index.ts b/src/index.ts
index d94a85730..4574b4758 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,7 @@
-import { validatePeerDependencies } from './lib/package'
+import { enforceValidPeerDependencies } from './lib/peerDepValidator'
 
-validatePeerDependencies({
-  packageJson: require('../package.json'),
+enforceValidPeerDependencies({
+  packageJson: require('../../package.json'),
 })
 
 const nexusPrisma = 'todo'
diff --git a/src/lib/package.ts b/src/lib/peerDepValidator.ts
similarity index 54%
rename from src/lib/package.ts
rename to src/lib/peerDepValidator.ts
index c790c7963..034428f1e 100644
--- a/src/lib/package.ts
+++ b/src/lib/peerDepValidator.ts
@@ -2,54 +2,107 @@ import kleur = require('kleur')
 import * as Semver from 'semver'
 import { PackageJson } from 'type-fest'
 
+type Failure =
+  | { message: string; kind: 'peer_dep_not_installed' }
+  | { message: string; kind: 'peer_dep_invalid_json'; error: unknown }
+  | { message: string; kind: 'peer_dep_invalid_package_json' }
+  | { message: string; kind: 'peer_dep_invalid_version' }
+  | { message: string; kind: 'unexpected_error'; error: unknown }
+
+export function enforceValidPeerDependencies({ packageJson }: { packageJson: PackageJson }): void {
+  if (['true', '1'].includes(process.env.NO_PEER_DEPENDENCY_CHECK ?? '')) return
+  if (['false', '0'].includes(process.env.PEER_DEPENDENCY_CHECK ?? '')) return
+
+  const failure = validatePeerDependencies({ packageJson })
+
+  if (failure) {
+    console.log(failure.message)
+
+    if ('error' in failure) {
+      console.error(failure.error)
+    }
+
+    if (failure.kind === 'peer_dep_not_installed') {
+      process.exit(1)
+    }
+  }
+}
+
 /**
  * Check that the given package's peer dependency requirements are met.
  *
- * NO-op if PEER_DEPENDENCY_CHECK envar is set to false or 0
- * NO-op if NO_PEER_DEPENDENCY_CHECK envar is set to true or 1
+ * When envar skipping enabled then:
+ *
+ *    1. NO-op if PEER_DEPENDENCY_CHECK envar is set to false or 0
+ *    2. NO-op if NO_PEER_DEPENDENCY_CHECK envar is set to true or 1
  */
-export function validatePeerDependencies({ packageJson }: { packageJson: PackageJson }): void {
-  if (['true', '1'].includes(process.env.NO_PEER_DEPENDENCY_CHECK ?? '')) return
-  if (['false', '0'].includes(process.env.PEER_DEPENDENCY_CHECK ?? '')) return
-
+export function validatePeerDependencies({ packageJson }: { packageJson: PackageJson }): null | Failure {
   try {
-    const name = packageJson.name ?? ''
     const peerDependencies = packageJson['peerDependencies'] ?? []
 
     for (const [pdName, _] of Object.entries(peerDependencies)) {
-      checkPeerDependencyIsImportableOrFatal({ requiredBy: name, dependencyName: pdName })
-
-      checkPeerDependencyRangeSatisfiedOrWarn({
+      const failure = validatePeerDependencyRangeSatisfied({
         peerDependencyName: pdName,
         requireer: packageJson,
       })
+
+      if (failure) return failure
+    }
+  } catch (error) {
+    return {
+      kind: 'unexpected_error',
+      message: renderWarning(`Something went wrong while trying to validate peer dependencies`),
+      error,
     }
-  } catch (e) {
-    console.warn(
-      renderWarning(`Something went wrong while trying to validate peer dependencies:\n\n${e.stack}`)
-    )
   }
+
+  return null
 }
 
-export function checkPeerDependencyRangeSatisfiedOrWarn({
+export function validatePeerDependencyRangeSatisfied({
   peerDependencyName,
   requireer,
 }: {
   peerDependencyName: string
   requireer: PackageJson
-}): void {
-  const pdPackageJson = require(`${peerDependencyName}/package.json`) as PackageJson
+}): null | Failure {
+  let pdPackageJson: PackageJson
+
+  try {
+    pdPackageJson = require(`${peerDependencyName}/package.json`) as PackageJson
+  } catch (error: unknown) {
+    if (!isModuleNotFoundError(error)) {
+      return {
+        kind: 'peer_dep_invalid_json',
+        message: `Peer dependency check found ${peerDependencyName} requried by ${requireer.name} to be installed but encountered an error while reading its package.json.`,
+        error,
+      }
+    }
+
+    return {
+      kind: 'peer_dep_not_installed',
+      message: renderError(
+        `${kleur.green(peerDependencyName)} is a peer dependency required by ${kleur.yellow(
+          requireer.name ?? ''
+        )}. But you have not installed it into this project yet. Please run \`${kleur.green(
+          renderPackageCommand(`add ${peerDependencyName}`)
+        )}\`.`
+      ),
+    }
+  }
+
   const pdVersion = pdPackageJson.version
   const pdVersionRangeSupported = requireer.peerDependencies?.[peerDependencyName]
 
-  // npm enforces that package manifests have a valid "version" field so this case _should_ never happen under normal circumstances.
+  // npm enforces that package manifests have a valid "version" field so this
+  // case _should_ never happen under normal circumstances.
   if (!pdVersion) {
-    console.warn(
-      renderWarning(
+    return {
+      kind: 'peer_dep_invalid_package_json',
+      message: renderWarning(
         `Peer dependency validation check failed unexpectedly. ${requireer.name} requires peer dependency ${pdPackageJson.name}. No version info for ${pdPackageJson.name} could be found in its package.json thus preventing a check if its version satisfies the peer dependency version range.`
-      )
-    )
-    return
+      ),
+    }
   }
 
   if (!pdVersionRangeSupported) {
@@ -58,53 +111,18 @@ export function checkPeerDependencyRangeSatisfiedOrWarn({
         `Peer dependency validation check failed unexpectedly. ${requireer.name} apparently requires peer dependency ${pdPackageJson.name} yet ${pdPackageJson.name} is not listed in the peer dependency listing of ${requireer.name}.`
       )
     )
-    return
+    return null
   }
 
   if (Semver.satisfies(pdVersion, pdVersionRangeSupported)) {
-    return
+    return null
   }
 
-  console.warn(
-    renderWarning(
+  return {
+    kind: 'peer_dep_invalid_version',
+    message: renderWarning(
       `Peer dependency validation check failed: ${requireer.name}@${requireer.version} does not officially support ${pdPackageJson.name}@${pdPackageJson.version}. The officially supported range is: \`${pdVersionRangeSupported}\`. This could lead to undefined behaviors and bugs.`
-    )
-  )
-}
-
-/**
- * Ensure that some package has been installed as a peer dep by the user.
- */
-export function checkPeerDependencyIsImportableOrFatal({
-  dependencyName,
-  requiredBy,
-}: {
-  dependencyName: string
-  requiredBy: string
-}): void {
-  try {
-    require(dependencyName)
-  } catch (error: unknown) {
-    if (!isModuleNotFoundError(error)) {
-      console.warn(
-        `Peer dependency check confirmed that ${dependencyName} requried by ${requiredBy} is importable however an error occured during import. This probably means something is wrong and your application will not work.\n\n${
-          error instanceof Error ? error.stack : error
-        }`
-      )
-      return
-    }
-
-    console.error(
-      renderError(
-        `${kleur.green(dependencyName)} is a peer dependency required by ${kleur.yellow(
-          requiredBy
-        )}. But you have not installed it into this project yet. Please run \`${kleur.green(
-          renderPackageCommand(`add ${dependencyName}`)
-        )}\`.`
-      )
-    )
-
-    process.exit(1)
+    ),
   }
 }
 
@@ -128,7 +146,7 @@ function renderPackageCommand(command: string): string {
 }
 
 function isModuleNotFoundError(error: any): error is Error {
-  if (error instanceof Error && (error as any).code !== 'MODULE_NOT_FOUND') {
+  if (error instanceof Error && (error as any).code === 'MODULE_NOT_FOUND') {
     return true
   }
 
diff --git a/tests/lib/package.spec.ts b/tests/lib/package.spec.ts
new file mode 100644
index 000000000..a2b39c6b0
--- /dev/null
+++ b/tests/lib/package.spec.ts
@@ -0,0 +1,183 @@
+import endent from 'endent'
+import * as execa from 'execa'
+import * as fs from 'fs-jetpack'
+import { FSJetpack } from 'fs-jetpack/types'
+import { merge, omit } from 'lodash'
+import { PackageJson } from 'type-fest'
+
+/**
+ * setup
+ */
+
+const badJson = ';'
+
+const requireer = {
+  name: 'alpha',
+}
+
+const peerDep = {
+  name: 'charlie',
+}
+
+let tmpdir: FSJetpack
+
+beforeAll(() => {
+  if (fs.exists('../../dist')) {
+    throw new Error(`Please build package before running this test`)
+  }
+
+  tmpdir = fs.tmpDir()
+  // console.log(tmpdir.cwd())
+
+  // Setup project
+
+  tmpdir.write('package.json', {
+    name: 'myapp',
+    version: '1.0.0',
+    main: 'index.js',
+    dependencies: {},
+  })
+
+  // setup alpha dep that has peer dep requirements
+
+  execa.commandSync(`yarn add kleur semver endent --production`, { cwd: tmpdir.cwd() })
+
+  tmpdir.write(`node_modules/${requireer.name}/package.json`, {
+    name: requireer.name,
+    version: '1.0.0',
+    main: 'dist/index.js',
+  })
+
+  tmpdir.copy(`${process.cwd()}/dist`, `${tmpdir.cwd()}/node_modules/${requireer.name}/dist`)
+
+  tmpdir.write(
+    'index.js',
+    endent`
+      const assert = require('assert')
+      const { validatePeerDependencies } = require('${requireer.name}/dist/lib/peerDepValidator')
+
+      const packageJson = require('${requireer.name}/package.json')
+      assert(packageJson)
+
+      const failure = validatePeerDependencies({
+        packageJson,
+      })
+
+      console.log(failure)
+    `
+  )
+
+  setupPeerDepRequirement({
+    name: peerDep.name,
+    range: '2.0.x',
+  })
+})
+
+/**
+ * helpers
+ */
+
+function setupDep({
+  name,
+  version = '0.0.0',
+  main = 'exports.hello = "world"',
+  packageJson = (x) => x,
+}: {
+  name: string
+  version?: string
+  main?: string
+  packageJson?: (defaultPackageJson: PackageJson) => PackageJson | string
+}): void {
+  const depdir = `node_modules/${name}`
+  tmpdir.write(`${depdir}/package.json`, packageJson({ name, version, main: './index.js' }))
+  tmpdir.write(`${depdir}/index.js`, main)
+  beforeEach(() => {
+    fs.remove(depdir)
+  })
+}
+
+function setupPeerDepRequirement({ name, range }: { name: string; range: string }) {
+  const old = tmpdir.read(`node_modules/${requireer.name}/package.json`, 'json')
+  tmpdir.write(
+    `node_modules/${requireer.name}/package.json`,
+    merge(old, { peerDependencies: { [name]: range } })
+  )
+}
+
+function runPeerDepValidator(params?: { env?: Record<string, string> }) {
+  return execa.commandSync('node index.js', {
+    cwd: tmpdir.cwd(),
+    env: {
+      ...process.env,
+      ...params?.env,
+    },
+  }).stdout
+}
+
+/**
+ * tests
+ */
+
+it('if project is missing peer dependency an error is thrown', () => {
+  expect(runPeerDepValidator()).toMatchInlineSnapshot(`
+    "{
+      kind: 'peer_dep_not_installed',
+      message: '\\\\x1B[31mERROR:\\\\x1B[39m \\\\x1B[32mcharlie\\\\x1B[39m is a peer dependency required by \\\\x1B[33malpha\\\\x1B[39m. But you have not installed it into this project yet. Please run \`\\\\x1B[32myarn add charlie\\\\x1B[39m\`.'
+    }"
+  `)
+})
+
+it('if project has peer dep, but upon import it fails somehow, then a warning given', () => {
+  setupDep({
+    name: peerDep.name,
+    packageJson() {
+      return badJson
+    },
+  })
+  expect(runPeerDepValidator()).toMatch(/peer_dep_invalid_json/)
+})
+
+it('if project peer dep version does not satisfy required range, then a warning given', () => {
+  setupDep({
+    name: peerDep.name,
+    version: '1.0.0',
+  })
+  expect(runPeerDepValidator()).toMatchInlineSnapshot(`
+    "{
+      kind: 'peer_dep_invalid_version',
+      message: '\\\\x1B[33mWARNING:\\\\x1B[39m Peer dependency validation check failed: alpha@1.0.0 does not officially support charlie@1.0.0. The officially supported range is: \`2.0.x\`. This could lead to undefined behaviors and bugs.'
+    }"
+  `)
+})
+
+it('if project peer dep version satisfies required range, then nothing happens', () => {
+  setupDep({
+    name: peerDep.name,
+    version: '2.0.1',
+  })
+  expect(runPeerDepValidator()).toMatchInlineSnapshot(`"null"`)
+})
+
+it('if peer dep package.json missing version field, then a warning given', () => {
+  setupDep({
+    name: peerDep.name,
+    version: '1.0.0',
+    packageJson(packageJson) {
+      return omit(packageJson, 'version')
+    },
+  })
+  expect(runPeerDepValidator()).toMatchInlineSnapshot(`
+    "{
+      kind: 'peer_dep_invalid_package_json',
+      message: '\\\\x1B[33mWARNING:\\\\x1B[39m Peer dependency validation check failed unexpectedly. alpha requires peer dependency charlie. No version info for charlie could be found in its package.json thus preventing a check if its version satisfies the peer dependency version range.'
+    }"
+  `)
+})
+
+// it('if PEER_DEPENDENCY_CHECK=false then no validation happens', () => {
+//   expect(getResult({ env: { PEER_DEPENDENCY_CHECK: 'false' } })).toMatchInlineSnapshot(`"null"`)
+// })
+
+// it('if NO_PEER_DEPENDENCY_CHECK=true then no validation happens', () => {
+//   expect(getResult({ env: { NO_PEER_DEPENDENCY_CHECK: 'true' } })).toMatchInlineSnapshot(`"null"`)
+// })
diff --git a/tests/test.spec.ts b/tests/test.spec.ts
deleted file mode 100644
index 3d71e78e8..000000000
--- a/tests/test.spec.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-it('works', () => {
-  expect(true).toEqual(true)
-})
diff --git a/tests/tsconfig.json b/tests/tsconfig.json
index c2994ac4e..90e41a1df 100644
--- a/tests/tsconfig.json
+++ b/tests/tsconfig.json
@@ -1,5 +1,9 @@
 {
   "extends": "../tsconfig.base.json",
   "references": [{ "path": ".." }],
-  "include": ["."]
+  "include": ["."],
+  "compilerOptions": {
+    // for strip-ansi
+    "esModuleInterop": true
+  }
 }
diff --git a/yarn.lock b/yarn.lock
index 7bdc12dd6..93239c972 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -671,6 +671,23 @@
   resolved "https://registry.yarnpkg.com/@prisma-labs/prettier-config/-/prettier-config-0.1.0.tgz#ef6cb5f89487974ca997516e9b39d5ccbefeeaad"
   integrity sha512-P0h2y+gnIxFP2HdsTYSYHWmabGBlxyVjnUepsrRe8gAF36mxOonGsbsQmKt/Q9H9CMjrSkFoDe5F5HLi2iW5/Q==
 
+"@prisma/client@2.17.0":
+  version "2.17.0"
+  resolved "https://registry.yarnpkg.com/@prisma/client/-/client-2.17.0.tgz#e38462796c2e824504763416f5e3a7219d70652d"
+  integrity sha512-tzsBxtx9J1epOGCiBeXur1tEz81UIdWg2G/HpDmflXKcv/MJb+KCWSKSsEW49eXcvVwRgxNyxLoCO6CwvjQKcg==
+  dependencies:
+    "@prisma/engines-version" "2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223"
+
+"@prisma/engines-version@2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223":
+  version "2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223"
+  resolved "https://registry.yarnpkg.com/@prisma/engines-version/-/engines-version-2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223.tgz#9ae6ed4467a0febff8afaf216c1bb67225f51b84"
+  integrity sha512-9idv5blqPUlvUPVT48eVi3T0RS/NBklUcjrla3jWyV8AYfB2BdaG/Zci7H5ajyYLnfZZHG9tBpP0LcveQCFH8A==
+
+"@prisma/engines@2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223":
+  version "2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223"
+  resolved "https://registry.yarnpkg.com/@prisma/engines/-/engines-2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223.tgz#08bc3633fd27fb1935805ef16c37802ed713db5b"
+  integrity sha512-FKjVD6NYbGiQhwas3hA2uMpNchz+Mf3tv5qA8Ci9cAkKHGqt3jWjjUAK9juVBqeOcv4OPimQYMrkRX6SvaxBjg==
+
 "@sinonjs/commons@^1.7.0":
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.2.tgz#858f5c4b48d80778fde4b9d541f27edc0d56488b"
@@ -757,6 +774,11 @@
     jest-diff "^26.0.0"
     pretty-format "^26.0.0"
 
+"@types/lodash@^4.14.168":
+  version "4.14.168"
+  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.168.tgz#fe24632e79b7ade3f132891afff86caa5e5ce008"
+  integrity sha512-oVfRvqHV/V6D1yifJbVRU3TMp8OT6o6BG+U9MkwuJ3U8/CsDHvalRpsxBqivn71ztOFZBTfJMvETbqHiaNSj7Q==
+
 "@types/node@*":
   version "14.14.29"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.29.tgz#2bbaefda2b715f9a0cd31c55b55b9092c5920e59"
@@ -1321,7 +1343,7 @@ cross-spawn@^6.0.0:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^7.0.0:
+cross-spawn@^7.0.0, cross-spawn@^7.0.3:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
   integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==
@@ -1399,6 +1421,11 @@ decompress-response@^4.2.0:
   dependencies:
     mimic-response "^2.0.0"
 
+dedent@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz#2495ddbaf6eb874abb0e1be9df22d2e5a544326c"
+  integrity sha1-JJXduvbrh0q7Dhvp3yLS5aVEMmw=
+
 deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
@@ -1523,6 +1550,15 @@ end-of-stream@^1.1.0:
   dependencies:
     once "^1.4.0"
 
+endent@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/endent/-/endent-2.0.1.tgz#fb18383a3f37ae3213a5d9f6c4a880d1061eb4c5"
+  integrity sha512-mADztvcC+vCk4XEZaCz6xIPO2NHQuprv5CAEjuVAu6aZwqAj7nVNlMyl1goPFYqCCpS2OJV9jwpumJLkotZrNw==
+  dependencies:
+    dedent "^0.7.0"
+    fast-json-parse "^1.0.3"
+    objectorarray "^1.0.4"
+
 error-ex@^1.3.1:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
@@ -1605,6 +1641,21 @@ execa@^4.0.0:
     signal-exit "^3.0.2"
     strip-final-newline "^2.0.0"
 
+execa@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-5.0.0.tgz#4029b0007998a841fbd1032e5f4de86a3c1e3376"
+  integrity sha512-ov6w/2LCiuyO4RLYGdpFGjkcs0wMTgGE8PrkTHikeUy5iJekXyPIKUjifk5CsE0pt7sMCrMZ3YNqoCj6idQOnQ==
+  dependencies:
+    cross-spawn "^7.0.3"
+    get-stream "^6.0.0"
+    human-signals "^2.1.0"
+    is-stream "^2.0.0"
+    merge-stream "^2.0.0"
+    npm-run-path "^4.0.1"
+    onetime "^5.1.2"
+    signal-exit "^3.0.3"
+    strip-final-newline "^2.0.0"
+
 exit-on-epipe@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/exit-on-epipe/-/exit-on-epipe-1.0.1.tgz#0bdd92e87d5285d267daa8171d0eb06159689692"
@@ -1701,6 +1752,11 @@ fast-glob@^3.1.1:
     micromatch "^4.0.2"
     picomatch "^2.2.1"
 
+fast-json-parse@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/fast-json-parse/-/fast-json-parse-1.0.3.tgz#43e5c61ee4efa9265633046b770fb682a7577c4d"
+  integrity sha512-FRWsaZRWEJ1ESVNbDWmsAlqDk96gPQezzLghafp5J4GUKjbCz3OkAHuZs5TuPEtkbVQERysLp9xv6c24fBm8Aw==
+
 fast-json-stable-stringify@2.x, fast-json-stable-stringify@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
@@ -1793,6 +1849,14 @@ fs-jetpack@^3.1.0:
     minimatch "^3.0.2"
     rimraf "^2.6.3"
 
+fs-jetpack@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/fs-jetpack/-/fs-jetpack-4.1.0.tgz#d693fcffd3cedbd8829226967866b9e89f290f0f"
+  integrity sha512-h4nHLIcCaxnXfUWhwP+mLnar03R2DBlqicNvKJG44TJob8RV6GB8EKNwJgSaBeDAfqWhqq01y+Ao96vRwpXlPw==
+  dependencies:
+    minimatch "^3.0.2"
+    rimraf "^2.6.3"
+
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -1837,6 +1901,11 @@ get-stream@^5.0.0:
   dependencies:
     pump "^3.0.0"
 
+get-stream@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-6.0.0.tgz#3e0012cb6827319da2706e601a1583e8629a6718"
+  integrity sha512-A1B3Bh1UmL0bidM/YX2NsCOTnGJePL9rO/M+Mw3m9f2gUpfokS0hi5Eah0WSUEWZdZhIZtMjkIYS7mDfOqNHbg==
+
 get-value@^2.0.3, get-value@^2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
@@ -1992,6 +2061,11 @@ human-signals@^1.1.1:
   resolved "https://registry.yarnpkg.com/human-signals/-/human-signals-1.1.1.tgz#c5b1cd14f50aeae09ab6c59fe63ba3395fe4dfa3"
   integrity sha512-SEQu7vl8KjNL2eoGBLF3+wAjpsNfA9XMlXAYj/3EdaNfAlxKthD1xjEQfGOUhllCGGJVNY34bRr6lPINhNjyZw==
 
+human-signals@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/human-signals/-/human-signals-2.1.0.tgz#dc91fcba42e4d06e4abaed33b3e7a3c02f514ea0"
+  integrity sha512-B4FFZ6q/T2jhhksgkbEW3HBvWIfDW85snkQgawt07S7J5QXTk6BkNV+0yAeZrM5QpMAdYlocGoljn0sJ/WQkFw==
+
 iconv-lite@0.4.24:
   version "0.4.24"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
@@ -2874,7 +2948,7 @@ lodash.templatesettings@^4.0.0:
   dependencies:
     lodash._reinterpolate "^3.0.0"
 
-lodash@4.x, lodash@^4.17.19:
+lodash@4.x, lodash@^4.17.19, lodash@^4.17.20:
   version "4.17.20"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
   integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
@@ -3109,7 +3183,7 @@ npm-run-path@^2.0.0:
   dependencies:
     path-key "^2.0.0"
 
-npm-run-path@^4.0.0:
+npm-run-path@^4.0.0, npm-run-path@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-4.0.1.tgz#b7ecd1e5ed53da8e37a55e1c2269e0b97ed748ea"
   integrity sha512-S48WzZW777zhNIrn7gxOlISNAqi9ZC/uQFnRdbeIHhZhCA6UqpkOT8T1G7BvfdgP4Er8gF4sUbaS0i7QvIfCWw==
@@ -3149,6 +3223,11 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
+objectorarray@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/objectorarray/-/objectorarray-1.0.4.tgz#d69b2f0ff7dc2701903d308bb85882f4ddb49483"
+  integrity sha512-91k8bjcldstRz1bG6zJo8lWD7c6QXcB4nTDUqiEvIL1xAsLoZlOOZZG+nd6YPz+V7zY1580J4Xxh1vZtyv4i/w==
+
 once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -3156,7 +3235,7 @@ once@^1.3.0, once@^1.3.1, once@^1.4.0:
   dependencies:
     wrappy "1"
 
-onetime@^5.1.0:
+onetime@^5.1.0, onetime@^5.1.2:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/onetime/-/onetime-5.1.2.tgz#d0e96ebb56b07476df1dd9c4806e5237985ca45e"
   integrity sha512-kbpaSSGJTWdAY5KPVeMOKXSrPtr8C8C7wodJbcsd51jRnmD+GZu8Y0VoU6Dm5Z4vWr0Ig/1NKuWRKf7j5aaYSg==
@@ -3331,6 +3410,13 @@ printj@~1.1.0:
   resolved "https://registry.yarnpkg.com/printj/-/printj-1.1.2.tgz#d90deb2975a8b9f600fb3a1c94e3f4c53c78a222"
   integrity sha512-zA2SmoLaxZyArQTOPj5LXecR+RagfPSU5Kw1qP+jkWeNlrq+eJZyY2oS68SU1Z/7/myXM4lo9716laOFAVStCQ==
 
+prisma@2.17.0:
+  version "2.17.0"
+  resolved "https://registry.yarnpkg.com/prisma/-/prisma-2.17.0.tgz#686469914ed13d4b0926ee5f17efb7a9ab741e8a"
+  integrity sha512-NypJI7OCXCfDkRKubbVb3nmPeRJ1SjQfg6QAwK06KsreBZl1F96rFz2iB2bl4kIrhLAbIySBjwUJlG87Jsxt7g==
+  dependencies:
+    "@prisma/engines" "2.17.0-35.3c463ebd78b1d21d8fdacdd27899e280cf686223"
+
 prompts@^2.0.1:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/prompts/-/prompts-2.4.0.tgz#4aa5de0723a231d1ee9121c40fdf663df73f61d7"
@@ -3649,7 +3735,7 @@ shellwords@^0.1.1:
   resolved "https://registry.yarnpkg.com/shellwords/-/shellwords-0.1.1.tgz#d6b9181c1a48d397324c84871efbcfc73fc0654b"
   integrity sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==
 
-signal-exit@^3.0.0, signal-exit@^3.0.2:
+signal-exit@^3.0.0, signal-exit@^3.0.2, signal-exit@^3.0.3:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
   integrity sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==

From 80e8459281aeed92cf20a18654a4513615caba84 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 16:20:34 -0500
Subject: [PATCH 2/7] force colors

---
 CONTRIBUTING.md | 3 +++
 package.json    | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 CONTRIBUTING.md

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 000000000..3b5fa5d81
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,3 @@
+## Tests
+
+- We enable `FORCE_COLOR=1` in npm test script so that we capture `kleur` colors in snapshots even in CI. We capture colors since we want to avoid regressions of the DX that colours provide.
diff --git a/package.json b/package.json
index 3ca1f1fd8..aac4f974a 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "format": "prettier --write .",
     "dev": "tsc --build --watch",
     "build": "yarn clean && tsc",
-    "test": "jest",
+    "test": "FORCE_COLOR=1 jest",
     "tdd": "jest --watch",
     "clean": "rm -rf dist && rm -rf node_modules/.cache",
     "release:pr": "dripip pr",

From e19bd9d79bcf02cbdc57d4a0ff0a973d371abc88 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 18:07:26 -0500
Subject: [PATCH 3/7] disable colors

---
 CONTRIBUTING.md           | 2 +-
 package.json              | 2 +-
 tests/lib/package.spec.ts | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3b5fa5d81..e2495d2e9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,3 +1,3 @@
 ## Tests
 
-- We enable `FORCE_COLOR=1` in npm test script so that we capture `kleur` colors in snapshots even in CI. We capture colors since we want to avoid regressions of the DX that colours provide.
+- We do `FORCE_COLOR=0` in npm test script so that we disable `kleur` colors in snapshots all the time. It would be nice to put the DX of colors into tests but needs some work. Node 12/14 results in different codes, [thus different snapshots](https://github.com/prisma/nexus-prisma/pull/3#issuecomment-782432471). See test-mode feature request here: https://github.com/lukeed/kleur/issues/47#issue-812419257.
diff --git a/package.json b/package.json
index aac4f974a..1bbf7757b 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "format": "prettier --write .",
     "dev": "tsc --build --watch",
     "build": "yarn clean && tsc",
-    "test": "FORCE_COLOR=1 jest",
+    "test": "FORCE_COLOR=0 jest",
     "tdd": "jest --watch",
     "clean": "rm -rf dist && rm -rf node_modules/.cache",
     "release:pr": "dripip pr",
diff --git a/tests/lib/package.spec.ts b/tests/lib/package.spec.ts
index a2b39c6b0..e3335d0dd 100644
--- a/tests/lib/package.spec.ts
+++ b/tests/lib/package.spec.ts
@@ -122,7 +122,7 @@ it('if project is missing peer dependency an error is thrown', () => {
   expect(runPeerDepValidator()).toMatchInlineSnapshot(`
     "{
       kind: 'peer_dep_not_installed',
-      message: '\\\\x1B[31mERROR:\\\\x1B[39m \\\\x1B[32mcharlie\\\\x1B[39m is a peer dependency required by \\\\x1B[33malpha\\\\x1B[39m. But you have not installed it into this project yet. Please run \`\\\\x1B[32myarn add charlie\\\\x1B[39m\`.'
+      message: 'ERROR: charlie is a peer dependency required by alpha. But you have not installed it into this project yet. Please run \`yarn add charlie\`.'
     }"
   `)
 })
@@ -145,7 +145,7 @@ it('if project peer dep version does not satisfy required range, then a warning
   expect(runPeerDepValidator()).toMatchInlineSnapshot(`
     "{
       kind: 'peer_dep_invalid_version',
-      message: '\\\\x1B[33mWARNING:\\\\x1B[39m Peer dependency validation check failed: alpha@1.0.0 does not officially support charlie@1.0.0. The officially supported range is: \`2.0.x\`. This could lead to undefined behaviors and bugs.'
+      message: 'WARNING: Peer dependency validation check failed: alpha@1.0.0 does not officially support charlie@1.0.0. The officially supported range is: \`2.0.x\`. This could lead to undefined behaviors and bugs.'
     }"
   `)
 })
@@ -169,7 +169,7 @@ it('if peer dep package.json missing version field, then a warning given', () =>
   expect(runPeerDepValidator()).toMatchInlineSnapshot(`
     "{
       kind: 'peer_dep_invalid_package_json',
-      message: '\\\\x1B[33mWARNING:\\\\x1B[39m Peer dependency validation check failed unexpectedly. alpha requires peer dependency charlie. No version info for charlie could be found in its package.json thus preventing a check if its version satisfies the peer dependency version range.'
+      message: 'WARNING: Peer dependency validation check failed unexpectedly. alpha requires peer dependency charlie. No version info for charlie could be found in its package.json thus preventing a check if its version satisfies the peer dependency version range.'
     }"
   `)
 })

From 8c43ee8ff0221fd8936ec182c76b3f1aa44e21b4 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 21:22:56 -0500
Subject: [PATCH 4/7] avoid envars not supported on windows

---
 package.json              | 2 +-
 tests/lib/package.spec.ts | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 1bbf7757b..3ca1f1fd8 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "format": "prettier --write .",
     "dev": "tsc --build --watch",
     "build": "yarn clean && tsc",
-    "test": "FORCE_COLOR=0 jest",
+    "test": "jest",
     "tdd": "jest --watch",
     "clean": "rm -rf dist && rm -rf node_modules/.cache",
     "release:pr": "dripip pr",
diff --git a/tests/lib/package.spec.ts b/tests/lib/package.spec.ts
index e3335d0dd..77715cee0 100644
--- a/tests/lib/package.spec.ts
+++ b/tests/lib/package.spec.ts
@@ -2,9 +2,12 @@ import endent from 'endent'
 import * as execa from 'execa'
 import * as fs from 'fs-jetpack'
 import { FSJetpack } from 'fs-jetpack/types'
+import kleur from 'kleur'
 import { merge, omit } from 'lodash'
 import { PackageJson } from 'type-fest'
 
+kleur.enabled = false
+
 /**
  * setup
  */

From ef67886c4071f2e844b37761f987c0b240e85492 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 21:23:47 -0500
Subject: [PATCH 5/7] update doc

---
 CONTRIBUTING.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e2495d2e9..284fdcc10 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,3 +1,3 @@
 ## Tests
 
-- We do `FORCE_COLOR=0` in npm test script so that we disable `kleur` colors in snapshots all the time. It would be nice to put the DX of colors into tests but needs some work. Node 12/14 results in different codes, [thus different snapshots](https://github.com/prisma/nexus-prisma/pull/3#issuecomment-782432471). See test-mode feature request here: https://github.com/lukeed/kleur/issues/47#issue-812419257.
+- We disable `kleur` colors so snapshots do not have them. It would be nice to put the DX of colors into tests but needs some work. Node 12/14 results in different codes, [thus different snapshots](https://github.com/prisma/nexus-prisma/pull/3#issuecomment-782432471). See test-mode feature request here: https://github.com/lukeed/kleur/issues/47#issue-812419257.

From 4bcc434ac92d303613e095d91ab39f7604162818 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 22:13:43 -0500
Subject: [PATCH 6/7] refactor

---
 src/lib/peerDepValidator.ts                   |   1 +
 .../peerDepValidator.test.ts.snap             |  24 ++
 tests/lib/package.spec.ts                     | 186 ----------------
 tests/lib/peerDepValidator.test.ts            | 207 ++++++++++++++++++
 tests/tsconfig.json                           |   3 +-
 5 files changed, 233 insertions(+), 188 deletions(-)
 create mode 100644 tests/lib/__snapshots__/peerDepValidator.test.ts.snap
 delete mode 100644 tests/lib/package.spec.ts
 create mode 100644 tests/lib/peerDepValidator.test.ts

diff --git a/src/lib/peerDepValidator.ts b/src/lib/peerDepValidator.ts
index 034428f1e..a85722a28 100644
--- a/src/lib/peerDepValidator.ts
+++ b/src/lib/peerDepValidator.ts
@@ -14,6 +14,7 @@ export function enforceValidPeerDependencies({ packageJson }: { packageJson: Pac
   if (['false', '0'].includes(process.env.PEER_DEPENDENCY_CHECK ?? '')) return
 
   const failure = validatePeerDependencies({ packageJson })
+  console.log(failure)
 
   if (failure) {
     console.log(failure.message)
diff --git a/tests/lib/__snapshots__/peerDepValidator.test.ts.snap b/tests/lib/__snapshots__/peerDepValidator.test.ts.snap
new file mode 100644
index 000000000..ebb50cb35
--- /dev/null
+++ b/tests/lib/__snapshots__/peerDepValidator.test.ts.snap
@@ -0,0 +1,24 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`ValidatePeerDependencies if peer dep missing, then returns failure 1`] = `
+"{
+  kind: 'peer_dep_not_installed',
+  message: 'ERROR: charlie is a peer dependency required by alpha. But you have not installed it into this project yet. Please run \`yarn add charlie\`.'
+}"
+`;
+
+exports[`ValidatePeerDependencies if peer dep package.json missing version field, then returns failure 1`] = `
+"{
+  kind: 'peer_dep_invalid_package_json',
+  message: 'WARNING: Peer dependency validation check failed unexpectedly. alpha requires peer dependency charlie. No version info for charlie could be found in its package.json thus preventing a check if its version satisfies the peer dependency version range.'
+}"
+`;
+
+exports[`ValidatePeerDependencies if peer dep version satisfies required range, then returns null 1`] = `"null"`;
+
+exports[`ValidatePeerDependencies if project peer dep version does not satisfy required range, then returns failure 1`] = `
+"{
+  kind: 'peer_dep_invalid_version',
+  message: 'WARNING: Peer dependency validation check failed: alpha@1.0.0 does not officially support charlie@1.0.0. The officially supported range is: \`2.0.x\`. This could lead to undefined behaviors and bugs.'
+}"
+`;
diff --git a/tests/lib/package.spec.ts b/tests/lib/package.spec.ts
deleted file mode 100644
index 77715cee0..000000000
--- a/tests/lib/package.spec.ts
+++ /dev/null
@@ -1,186 +0,0 @@
-import endent from 'endent'
-import * as execa from 'execa'
-import * as fs from 'fs-jetpack'
-import { FSJetpack } from 'fs-jetpack/types'
-import kleur from 'kleur'
-import { merge, omit } from 'lodash'
-import { PackageJson } from 'type-fest'
-
-kleur.enabled = false
-
-/**
- * setup
- */
-
-const badJson = ';'
-
-const requireer = {
-  name: 'alpha',
-}
-
-const peerDep = {
-  name: 'charlie',
-}
-
-let tmpdir: FSJetpack
-
-beforeAll(() => {
-  if (fs.exists('../../dist')) {
-    throw new Error(`Please build package before running this test`)
-  }
-
-  tmpdir = fs.tmpDir()
-  // console.log(tmpdir.cwd())
-
-  // Setup project
-
-  tmpdir.write('package.json', {
-    name: 'myapp',
-    version: '1.0.0',
-    main: 'index.js',
-    dependencies: {},
-  })
-
-  // setup alpha dep that has peer dep requirements
-
-  execa.commandSync(`yarn add kleur semver endent --production`, { cwd: tmpdir.cwd() })
-
-  tmpdir.write(`node_modules/${requireer.name}/package.json`, {
-    name: requireer.name,
-    version: '1.0.0',
-    main: 'dist/index.js',
-  })
-
-  tmpdir.copy(`${process.cwd()}/dist`, `${tmpdir.cwd()}/node_modules/${requireer.name}/dist`)
-
-  tmpdir.write(
-    'index.js',
-    endent`
-      const assert = require('assert')
-      const { validatePeerDependencies } = require('${requireer.name}/dist/lib/peerDepValidator')
-
-      const packageJson = require('${requireer.name}/package.json')
-      assert(packageJson)
-
-      const failure = validatePeerDependencies({
-        packageJson,
-      })
-
-      console.log(failure)
-    `
-  )
-
-  setupPeerDepRequirement({
-    name: peerDep.name,
-    range: '2.0.x',
-  })
-})
-
-/**
- * helpers
- */
-
-function setupDep({
-  name,
-  version = '0.0.0',
-  main = 'exports.hello = "world"',
-  packageJson = (x) => x,
-}: {
-  name: string
-  version?: string
-  main?: string
-  packageJson?: (defaultPackageJson: PackageJson) => PackageJson | string
-}): void {
-  const depdir = `node_modules/${name}`
-  tmpdir.write(`${depdir}/package.json`, packageJson({ name, version, main: './index.js' }))
-  tmpdir.write(`${depdir}/index.js`, main)
-  beforeEach(() => {
-    fs.remove(depdir)
-  })
-}
-
-function setupPeerDepRequirement({ name, range }: { name: string; range: string }) {
-  const old = tmpdir.read(`node_modules/${requireer.name}/package.json`, 'json')
-  tmpdir.write(
-    `node_modules/${requireer.name}/package.json`,
-    merge(old, { peerDependencies: { [name]: range } })
-  )
-}
-
-function runPeerDepValidator(params?: { env?: Record<string, string> }) {
-  return execa.commandSync('node index.js', {
-    cwd: tmpdir.cwd(),
-    env: {
-      ...process.env,
-      ...params?.env,
-    },
-  }).stdout
-}
-
-/**
- * tests
- */
-
-it('if project is missing peer dependency an error is thrown', () => {
-  expect(runPeerDepValidator()).toMatchInlineSnapshot(`
-    "{
-      kind: 'peer_dep_not_installed',
-      message: 'ERROR: charlie is a peer dependency required by alpha. But you have not installed it into this project yet. Please run \`yarn add charlie\`.'
-    }"
-  `)
-})
-
-it('if project has peer dep, but upon import it fails somehow, then a warning given', () => {
-  setupDep({
-    name: peerDep.name,
-    packageJson() {
-      return badJson
-    },
-  })
-  expect(runPeerDepValidator()).toMatch(/peer_dep_invalid_json/)
-})
-
-it('if project peer dep version does not satisfy required range, then a warning given', () => {
-  setupDep({
-    name: peerDep.name,
-    version: '1.0.0',
-  })
-  expect(runPeerDepValidator()).toMatchInlineSnapshot(`
-    "{
-      kind: 'peer_dep_invalid_version',
-      message: 'WARNING: Peer dependency validation check failed: alpha@1.0.0 does not officially support charlie@1.0.0. The officially supported range is: \`2.0.x\`. This could lead to undefined behaviors and bugs.'
-    }"
-  `)
-})
-
-it('if project peer dep version satisfies required range, then nothing happens', () => {
-  setupDep({
-    name: peerDep.name,
-    version: '2.0.1',
-  })
-  expect(runPeerDepValidator()).toMatchInlineSnapshot(`"null"`)
-})
-
-it('if peer dep package.json missing version field, then a warning given', () => {
-  setupDep({
-    name: peerDep.name,
-    version: '1.0.0',
-    packageJson(packageJson) {
-      return omit(packageJson, 'version')
-    },
-  })
-  expect(runPeerDepValidator()).toMatchInlineSnapshot(`
-    "{
-      kind: 'peer_dep_invalid_package_json',
-      message: 'WARNING: Peer dependency validation check failed unexpectedly. alpha requires peer dependency charlie. No version info for charlie could be found in its package.json thus preventing a check if its version satisfies the peer dependency version range.'
-    }"
-  `)
-})
-
-// it('if PEER_DEPENDENCY_CHECK=false then no validation happens', () => {
-//   expect(getResult({ env: { PEER_DEPENDENCY_CHECK: 'false' } })).toMatchInlineSnapshot(`"null"`)
-// })
-
-// it('if NO_PEER_DEPENDENCY_CHECK=true then no validation happens', () => {
-//   expect(getResult({ env: { NO_PEER_DEPENDENCY_CHECK: 'true' } })).toMatchInlineSnapshot(`"null"`)
-// })
diff --git a/tests/lib/peerDepValidator.test.ts b/tests/lib/peerDepValidator.test.ts
new file mode 100644
index 000000000..88e82e189
--- /dev/null
+++ b/tests/lib/peerDepValidator.test.ts
@@ -0,0 +1,207 @@
+import endent from 'endent'
+import * as execa from 'execa'
+import * as fs from 'fs-jetpack'
+import { FSJetpack } from 'fs-jetpack/types'
+import { merge, omit } from 'lodash'
+import { PackageJson } from 'type-fest'
+
+/**
+ * setup
+ */
+
+const badJson = ';'
+
+const requireer = {
+  name: 'alpha',
+}
+
+const peerDep = {
+  name: 'charlie',
+}
+
+process.exit
+
+let tmpdir: FSJetpack
+
+beforeAll(() => {
+  if (fs.exists('../../dist')) {
+    throw new Error(`Please build package before running this test`)
+  }
+
+  tmpdir = fs.tmpDir()
+  // console.log(tmpdir.cwd())
+
+  // Setup project
+
+  tmpdir.write('package.json', {
+    name: 'myapp',
+    version: '1.0.0',
+    dependencies: {},
+  })
+
+  // setup alpha dep that has peer dep requirements
+
+  execa.commandSync(`yarn add kleur semver endent --production`, { cwd: tmpdir.cwd() })
+
+  tmpdir.write(`node_modules/${requireer.name}/package.json`, {
+    name: requireer.name,
+    version: '1.0.0',
+    main: 'dist/index.js',
+  })
+
+  tmpdir.copy(`${process.cwd()}/dist`, `${tmpdir.cwd()}/node_modules/${requireer.name}/dist`)
+
+  tmpdir.write(
+    'validatePeerDependencies.js',
+    endent`
+      const assert = require('assert')
+      const { validatePeerDependencies } = require('${requireer.name}/dist/lib/peerDepValidator')
+
+      const packageJson = require('${requireer.name}/package.json')
+      assert(packageJson)
+
+      const failure = validatePeerDependencies({
+        packageJson,
+      })
+
+      console.log(failure)
+    `
+  )
+
+  tmpdir.write(
+    'enforceValidPeerDependencies.js',
+    endent`
+      const assert = require('assert')
+      const { enforceValidPeerDependencies } = require('${requireer.name}/dist/lib/peerDepValidator')
+
+      const packageJson = require('${requireer.name}/package.json')
+      assert(packageJson)
+
+      enforceValidPeerDependencies({
+        packageJson,
+      })
+    `
+  )
+
+  setupPeerDepRequirement({
+    name: peerDep.name,
+    range: '2.0.x',
+  })
+})
+
+beforeEach(() => {
+  tmpdir.remove(`node_modules/${peerDep.name}`)
+})
+
+/**
+ * helpers
+ */
+
+function setupDep({
+  name,
+  version = '0.0.0',
+  main = 'exports.hello = "world"',
+  packageJson = (x) => x,
+}: {
+  name: string
+  version?: string
+  main?: string
+  packageJson?: (defaultPackageJson: PackageJson) => PackageJson | string
+}): void {
+  const depdir = `node_modules/${name}`
+  tmpdir.write(`${depdir}/package.json`, packageJson({ name, version, main: './index.js' }))
+  tmpdir.write(`${depdir}/index.js`, main)
+}
+
+function setupPeerDepRequirement({ name, range }: { name: string; range: string }) {
+  const old = tmpdir.read(`node_modules/${requireer.name}/package.json`, 'json')
+  tmpdir.write(
+    `node_modules/${requireer.name}/package.json`,
+    merge(old, { peerDependencies: { [name]: range } })
+  )
+}
+
+function runValidatePeerDependencies() {
+  return execa.commandSync('node validatePeerDependencies.js', {
+    cwd: tmpdir.cwd(),
+    env: {
+      ...process.env,
+      FORCE_COLOR: '0',
+    },
+  })
+}
+
+function runEnforceValidPeerDependencies(params?: { env?: Record<string, string> }) {
+  return execa.commandSync('node enforceValidPeerDependencies.js', {
+    cwd: tmpdir.cwd(),
+    env: {
+      ...process.env,
+      FORCE_COLOR: '0',
+      ...params?.env,
+    },
+    reject: false,
+  })
+}
+
+/**
+ * tests
+ */
+
+describe('ValidatePeerDependencies', () => {
+  it('if peer dep missing, then returns failure', () => {
+    expect(runValidatePeerDependencies().stdout).toMatchSnapshot()
+  })
+
+  it('if peer dep installed, but upon import JSON parsing fails somehow, then fails', () => {
+    setupDep({
+      name: peerDep.name,
+      packageJson() {
+        return badJson
+      },
+    })
+    expect(runValidatePeerDependencies().stdout).toMatch(/peer_dep_invalid_json/)
+  })
+
+  it('if project peer dep version does not satisfy required range, then returns failure', () => {
+    setupDep({
+      name: peerDep.name,
+      version: '1.0.0',
+    })
+    expect(runValidatePeerDependencies().stdout).toMatchSnapshot()
+  })
+
+  it('if peer dep version satisfies required range, then returns null', () => {
+    setupDep({
+      name: peerDep.name,
+      version: '2.0.1',
+    })
+    expect(runValidatePeerDependencies().stdout).toMatchSnapshot()
+  })
+
+  it('if peer dep package.json missing version field, then returns failure', () => {
+    setupDep({
+      name: peerDep.name,
+      version: '1.0.0',
+      packageJson(packageJson) {
+        return omit(packageJson, 'version')
+      },
+    })
+    expect(runValidatePeerDependencies().stdout).toMatchSnapshot()
+  })
+})
+
+describe('enforceValidPeerDependencies', () => {
+  it('if PEER_DEPENDENCY_CHECK=false|0 then no validation happens', () => {
+    expect(runEnforceValidPeerDependencies({ env: { PEER_DEPENDENCY_CHECK: 'false' } }).stdout).toEqual(``)
+    expect(runEnforceValidPeerDependencies({ env: { PEER_DEPENDENCY_CHECK: '0' } }).stdout).toEqual(``)
+  })
+
+  it('if NO_PEER_DEPENDENCY_CHECK=true|1 then no validation happens', () => {
+    expect(runEnforceValidPeerDependencies({ env: { NO_PEER_DEPENDENCY_CHECK: 'true' } }).stdout).toEqual(``)
+    expect(runEnforceValidPeerDependencies({ env: { NO_PEER_DEPENDENCY_CHECK: '1' } }).stdout).toEqual(``)
+  })
+
+  it('if peer dependency is missing, than process exits 1', () => {
+    expect(runEnforceValidPeerDependencies().exitCode).toEqual(1)
+  })
+})
diff --git a/tests/tsconfig.json b/tests/tsconfig.json
index 90e41a1df..ffedfc146 100644
--- a/tests/tsconfig.json
+++ b/tests/tsconfig.json
@@ -3,7 +3,6 @@
   "references": [{ "path": ".." }],
   "include": ["."],
   "compilerOptions": {
-    // for strip-ansi
-    "esModuleInterop": true
+    "tsBuildInfoFile": "node_modules/.cache/.tsbuildinfo.test"
   }
 }

From 955fdcdaf2e34055a8580edf92277d0fc49519c4 Mon Sep 17 00:00:00 2001
From: Jason Kuhrt <jasonkuhrt@me.com>
Date: Fri, 19 Feb 2021 22:15:28 -0500
Subject: [PATCH 7/7] snap enforcement test logs

---
 tests/lib/__snapshots__/peerDepValidator.test.ts.snap | 8 ++++++++
 tests/lib/peerDepValidator.test.ts                    | 6 ++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tests/lib/__snapshots__/peerDepValidator.test.ts.snap b/tests/lib/__snapshots__/peerDepValidator.test.ts.snap
index ebb50cb35..8b603b42c 100644
--- a/tests/lib/__snapshots__/peerDepValidator.test.ts.snap
+++ b/tests/lib/__snapshots__/peerDepValidator.test.ts.snap
@@ -22,3 +22,11 @@ exports[`ValidatePeerDependencies if project peer dep version does not satisfy r
   message: 'WARNING: Peer dependency validation check failed: alpha@1.0.0 does not officially support charlie@1.0.0. The officially supported range is: \`2.0.x\`. This could lead to undefined behaviors and bugs.'
 }"
 `;
+
+exports[`enforceValidPeerDependencies if peer dependency is missing, than logs and process exits 1 1`] = `
+"{
+  kind: 'peer_dep_not_installed',
+  message: 'ERROR: charlie is a peer dependency required by alpha. But you have not installed it into this project yet. Please run \`yarn add charlie\`.'
+}
+ERROR: charlie is a peer dependency required by alpha. But you have not installed it into this project yet. Please run \`yarn add charlie\`."
+`;
diff --git a/tests/lib/peerDepValidator.test.ts b/tests/lib/peerDepValidator.test.ts
index 88e82e189..7ce7020b9 100644
--- a/tests/lib/peerDepValidator.test.ts
+++ b/tests/lib/peerDepValidator.test.ts
@@ -201,7 +201,9 @@ describe('enforceValidPeerDependencies', () => {
     expect(runEnforceValidPeerDependencies({ env: { NO_PEER_DEPENDENCY_CHECK: '1' } }).stdout).toEqual(``)
   })
 
-  it('if peer dependency is missing, than process exits 1', () => {
-    expect(runEnforceValidPeerDependencies().exitCode).toEqual(1)
+  it('if peer dependency is missing, than logs and process exits 1', () => {
+    const result = runEnforceValidPeerDependencies()
+    expect(result.exitCode).toEqual(1)
+    expect(result.stdout).toMatchSnapshot()
   })
 })