feat: expose standalone download function

src/download.js

@@ -236,13 +236,23 @@ async function link ({ depBin, version }) {
   return localBin
 }
 
+/**
+* @param {object} options
+* @param {string} options.version
+* @param {string} options.platform
+* @param {string} options.arch
+* @param {string} options.installPath
+* @param {string} options.distUrl
+*/
+module.exports.download = download
+
 /**
  * @param {string} [version]
  * @param {string} [platform]
  * @param {string} [arch]
  * @param {string} [installPath]
  */
-module.exports = async (version, platform, arch, installPath) => {
+module.exports.downloadAndUpdateBin = async (version, platform, arch, installPath) => {
   const args = cleanArguments(version, platform, arch, installPath)
 
   return link({

src/go-platform.js

@@ -2,31 +2,30 @@
 
 function getGoOs () {
   switch (process.platform) {
-    case "sunos":
-      return "solaris"
-    case "win32":
-      return "windows"
+    case 'sunos':
+      return 'solaris'
+    case 'win32':
+      return 'windows'
   }
 
   return process.platform
 }
 
 function getGoArch () {
   switch (process.arch) {
-    case "ia32":
-      return "386"
-    case "x64":
-      return "amd64"
-    case "arm":
-      return "arm"
-    case "arm64":
-      return "arm64"
+    case 'ia32':
+      return '386'
+    case 'x64':
+      return 'amd64'
+    case 'arm':
+      return 'arm'
+    case 'arm64':
+      return 'arm64'
   }
 
   return process.arch
 }
 
-
 module.exports = {
   GOOS: getGoOs(),
   GOARCH: getGoArch()

src/index.js

@@ -2,6 +2,9 @@
 
 const fs = require('fs')
 const path = require('path')
+const { download } = require('./download')
+
+module.exports.download = download
 
 module.exports.path = function () {
   if (process.env.KUBO_BINARY) {

src/post-install.js

@@ -1,8 +1,8 @@
 'use strict'
 
-const download = require('./download')
+const { downloadAndUpdateBin } = require('./download')
 
-download()
+downloadAndUpdateBin()
   .catch(err => {
     console.error(err)
     process.exit(1)

test/download.js

@@ -2,14 +2,16 @@
 
 const test = require('tape-promise').default(require('tape'))
 const fs = require('fs-extra')
-const download = require('../src/download')
+const os = require('os')
+const path= require('path')
+const { download, downloadAndUpdateBin } = require('../src/download')
 const { path: detectLocation } = require('../')
 const clean = require('./fixtures/clean')
 
 test('Ensure ipfs gets downloaded (current version and platform)', async (t) => {
   await clean()
 
-  const installPath = await download()
+  const installPath = await downloadAndUpdateBin()
   const stats = await fs.stat(installPath)
 
   t.ok(stats, 'kubo was downloaded')
@@ -21,7 +23,7 @@ test('Ensure ipfs gets downloaded (current version and platform)', async (t) =>
 test('Returns an error when version unsupported', async (t) => {
   await clean()
 
-  await t.rejects(download('bogusversion', 'linux'), /Error: Version 'bogusversion' not available/)
+  await t.rejects(downloadAndUpdateBin('bogusversion', 'linux'), /Error: Version 'bogusversion' not available/)
 
   t.end()
 })
@@ -31,7 +33,7 @@ test('Returns an error when KUBO_DIST_URL is 404', async (t) => {
 
   process.env.KUBO_DIST_URL = 'https://dist.ipfs.tech/notfound'
 
-  await t.rejects(download(), /404/)
+  await t.rejects(downloadAndUpdateBin(), /404/)
 
   delete process.env.KUBO_DIST_URL
 
@@ -43,18 +45,39 @@ test('Returns an error when legacy GO_IPFS_DIST_URL is 404', async (t) => {
 
   process.env.GO_IPFS_DIST_URL = 'https://dist.ipfs.tech/notfound'
 
-  await t.rejects(download(), /404/)
+  await t.rejects(downloadAndUpdateBin(), /404/)
 
   delete process.env.GO_IPFS_DIST_URL
 
   t.end()
 })
 
-
 test('Path returns undefined when no binary has been downloaded', async (t) => {
   await clean()
 
   t.throws(detectLocation, /not found/, 'Path throws if binary is not installed')
 
   t.end()
 })
+
+test('Ensure calling download function manually with static values works', async (t) => {
+  await clean()
+
+  const { version } = require('../package.json')
+  const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'temp-dir-'))
+
+  console.log(tempDir)
+  const kuboPath = await download({
+    version: `v${version}`,
+    platform: 'darwin',
+    arch: 'arm64',
+    distUrl: 'https://dist.ipfs.tech',
+    installPath: tempDir,
+  })
+  console.log(kuboPath)
+  const stats = await fs.stat(kuboPath)
+
+  t.ok(stats, 'kubo was downloaded to installPath')
+
+  t.end()
+})