159 lines
4.0 KiB
JavaScript
Executable File
159 lines
4.0 KiB
JavaScript
Executable File
#!/usr/bin/env node
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/* Based on webpack/bin/webpack.js */
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/* eslint-disable no-console */
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'use strict';
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/**
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* @param {string} command process to run
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* @param {string[]} args command line arguments
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* @returns {Promise<void>} promise
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*/
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const runCommand = (command, args) => {
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const cp = require('child_process');
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return new Promise((resolve, reject) => {
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const executedCommand = cp.spawn(command, args, {
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stdio: 'inherit',
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shell: true,
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});
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executedCommand.on('error', (error) => {
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reject(error);
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});
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executedCommand.on('exit', (code) => {
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if (code === 0) {
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resolve();
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} else {
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reject();
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}
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});
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});
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};
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/**
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* @param {string} packageName name of the package
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* @returns {boolean} is the package installed?
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*/
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const isInstalled = (packageName) => {
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try {
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require.resolve(packageName);
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return true;
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} catch (err) {
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return false;
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}
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};
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/**
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* @param {CliOption} cli options
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* @returns {void}
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*/
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const runCli = (cli) => {
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if (cli.preprocess) {
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cli.preprocess();
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}
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const path = require('path');
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const pkgPath = require.resolve(`${cli.package}/package.json`);
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// eslint-disable-next-line import/no-dynamic-require
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const pkg = require(pkgPath);
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// eslint-disable-next-line import/no-dynamic-require
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require(path.resolve(path.dirname(pkgPath), pkg.bin[cli.binName]));
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};
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/**
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* @typedef {Object} CliOption
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* @property {string} name display name
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* @property {string} package npm package name
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* @property {string} binName name of the executable file
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* @property {boolean} installed currently installed?
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* @property {string} url homepage
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* @property {function} preprocess preprocessor
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*/
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/** @type {CliOption} */
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const cli = {
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name: 'webpack-cli',
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package: 'webpack-cli',
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binName: 'webpack-cli',
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installed: isInstalled('webpack-cli'),
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url: 'https://github.com/webpack/webpack-cli',
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preprocess() {
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process.argv.splice(2, 0, 'serve');
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},
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};
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if (!cli.installed) {
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const path = require('path');
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const fs = require('graceful-fs');
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const readLine = require('readline');
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const notify = `CLI for webpack must be installed.\n ${cli.name} (${cli.url})\n`;
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console.error(notify);
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let packageManager;
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if (fs.existsSync(path.resolve(process.cwd(), 'yarn.lock'))) {
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packageManager = 'yarn';
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} else if (fs.existsSync(path.resolve(process.cwd(), 'pnpm-lock.yaml'))) {
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packageManager = 'pnpm';
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} else {
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packageManager = 'npm';
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}
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const installOptions = [packageManager === 'yarn' ? 'add' : 'install', '-D'];
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console.error(
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`We will use "${packageManager}" to install the CLI via "${packageManager} ${installOptions.join(
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' '
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)} ${cli.package}".`
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);
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const question = `Do you want to install 'webpack-cli' (yes/no): `;
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const questionInterface = readLine.createInterface({
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input: process.stdin,
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output: process.stderr,
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});
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// In certain scenarios (e.g. when STDIN is not in terminal mode), the callback function will not be
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// executed. Setting the exit code here to ensure the script exits correctly in those cases. The callback
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// function is responsible for clearing the exit code if the user wishes to install webpack-cli.
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process.exitCode = 1;
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questionInterface.question(question, (answer) => {
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questionInterface.close();
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const normalizedAnswer = answer.toLowerCase().startsWith('y');
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if (!normalizedAnswer) {
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console.error(
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"You need to install 'webpack-cli' to use webpack via CLI.\n" +
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'You can also install the CLI manually.'
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);
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return;
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}
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process.exitCode = 0;
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console.log(
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`Installing '${
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cli.package
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}' (running '${packageManager} ${installOptions.join(' ')} ${
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cli.package
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}')...`
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);
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runCommand(packageManager, installOptions.concat(cli.package))
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.then(() => {
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runCli(cli);
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})
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.catch((error) => {
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console.error(error);
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process.exitCode = 1;
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});
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});
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} else {
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runCli(cli);
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}
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