Download the binaries inside postinstall

.npm/bin/index.js

@@ -1,12 +1,12 @@
 #!/usr/bin/env node
 
 var spawn = require('child_process').spawn;
-const { getExePath } = require('../get-exe');
+const path = require("path")
+const exePath = path.join(__dirname, `lefthook${["win32", "cygwin"].includes(process.platform) ? ".exe" : ""}`)
 
 var command_args = process.argv.slice(2);
-
 var child = spawn(
- getExePath(),
+ exePath,
  command_args,
  { stdio: "inherit" });
 

.npm/package.json

@@ -30,5 +30,8 @@
  ],
  "scripts": {
  "postinstall": "node postinstall.js"
+ },
+ "dependencies": {
+ "node-downloader-helper": "^1.0.18"
  }
 }

.npm/postinstall.js

@@ -1,10 +1,69 @@
-if (!process.env.CI) {
- const { spawnSync } = require('child_process');
- const { getExePath } = require('./get-exe');
+const { spawnSync } = require("child_process")
 
+async function install() {
+ if (process.env.CI) {
+ return
+ }
+ const exePath = await downloadBinary()
  // run install
- spawnSync(getExePath(), ['install', '-f'], {
+ spawnSync(exePath, ["install", "-f"], {
  cwd: process.env.INIT_CWD || process.cwd,
- stdio: 'inherit',
- });
+ stdio: "inherit",
+ })
 }
+
+function getDownloadURL() {
+ // Detect OS
+ // https://nodejs.org/api/process.html#process_process_platform
+ let goOS = process.platform
+ let extension = ""
+ if (["win32", "cygwin"].includes(process.platform)) {
+ goOS = "windows"
+ extension = ".exe"
+ }
+
+ // Convert the goOS to the os name in the download URL
+ let downloadOS = goOS === "darwin" ? "macOS" : goOS
+ downloadOS = `${downloadOS.charAt(0).toUpperCase()}${downloadOS.slice(1)}`
+
+ // Detect architecture
+ // https://nodejs.org/api/process.html#process_process_arch
+ let arch = process.arch
+ switch (process.arch) {
+ case "x64": {
+ arch = "x86_64"
+ break
+ }
+ case "x32":
+ case "ia32": {
+ arch = "i386"
+ break
+ }
+ }
+ const version = require("./package.json").version
+
+ return `https://github.com/evilmartians/lefthook/releases/download/v${version}/lefthook_${version}_${downloadOS}_${arch}${extension}`
+}
+
+const { DownloaderHelper } = require("node-downloader-helper")
+const path = require("path")
+
+async function downloadBinary() {
+ // TODO zip the binaries to reduce the download size
+ const downloadURL = getDownloadURL()
+ const extension = path.extname(downloadURL).slice(1)
+ const fileName = `lefthook.${extension}`
+ const binDir = path.join(__dirname, "bin")
+ const dl = new DownloaderHelper(downloadURL, binDir, {
+ fileName,
+ retry: { maxRetries: 5, delay: 50 },
+ })
+ dl.on("end", () => console.log("lefthook binary was downloaded"))
+ await dl.start()
+ return path.join(binDir, fileName)
+}
+
+// start:
+install().catch((e) => {
+ throw e
+})