#!/usr/bin/env node
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const { version } = require('./package');
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const childProcess = require('child_process');
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const fs = require('fs');
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const os = require('os');
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const path = require('path');
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const extract = require('extract-zip');
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const { downloadArtifact } = require('@electron/get');
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if (process.env.ELECTRON_SKIP_BINARY_DOWNLOAD) {
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process.exit(0);
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}
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const platformPath = getPlatformPath();
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if (isInstalled()) {
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process.exit(0);
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}
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const platform = process.env.npm_config_platform || process.platform;
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let arch = process.env.npm_config_arch || process.arch;
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if (platform === 'darwin' && process.platform === 'darwin' && arch === 'x64' &&
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process.env.npm_config_arch === undefined) {
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// When downloading for macOS ON macOS and we think we need x64 we should
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// check if we're running under rosetta and download the arm64 version if appropriate
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try {
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const output = childProcess.execSync('sysctl -in sysctl.proc_translated');
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if (output.toString().trim() === '1') {
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arch = 'arm64';
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}
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} catch {
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// Ignore failure
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}
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}
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// downloads if not cached
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downloadArtifact({
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version,
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artifactName: 'electron',
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force: process.env.force_no_cache === 'true',
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cacheRoot: process.env.electron_config_cache,
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checksums: process.env.electron_use_remote_checksums ? undefined : require('./checksums.json'),
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platform,
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arch
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}).then(extractFile).catch(err => {
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console.error(err.stack);
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process.exit(1);
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});
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function isInstalled () {
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try {
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if (fs.readFileSync(path.join(__dirname, 'dist', 'version'), 'utf-8').replace(/^v/, '') !== version) {
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return false;
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}
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if (fs.readFileSync(path.join(__dirname, 'path.txt'), 'utf-8') !== platformPath) {
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return false;
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}
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} catch (ignored) {
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return false;
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}
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const electronPath = process.env.ELECTRON_OVERRIDE_DIST_PATH || path.join(__dirname, 'dist', platformPath);
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return fs.existsSync(electronPath);
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}
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// unzips and makes path.txt point at the correct executable
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function extractFile (zipPath) {
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const distPath = process.env.ELECTRON_OVERRIDE_DIST_PATH || path.join(__dirname, 'dist');
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return extract(zipPath, { dir: path.join(__dirname, 'dist') }).then(() => {
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// If the zip contains an "electron.d.ts" file,
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// move that up
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const srcTypeDefPath = path.join(distPath, 'electron.d.ts');
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const targetTypeDefPath = path.join(__dirname, 'electron.d.ts');
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const hasTypeDefinitions = fs.existsSync(srcTypeDefPath);
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if (hasTypeDefinitions) {
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fs.renameSync(srcTypeDefPath, targetTypeDefPath);
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}
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// Write a "path.txt" file.
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return fs.promises.writeFile(path.join(__dirname, 'path.txt'), platformPath);
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});
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}
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function getPlatformPath () {
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const platform = process.env.npm_config_platform || os.platform();
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switch (platform) {
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case 'mas':
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case 'darwin':
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return 'Electron.app/Contents/MacOS/Electron';
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case 'freebsd':
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case 'openbsd':
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case 'linux':
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return 'electron';
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case 'win32':
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return 'electron.exe';
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default:
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throw new Error('Electron builds are not available on platform: ' + platform);
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}
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}
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