0.2.0 - Mid migration

web/node_modules/webpack/bin/webpack.js

@@ -0,0 +1,171 @@
+#!/usr/bin/env node
+
+// @ts-ignore
+process.exitCode = 0;
+
+/**
+ * @param {string} command process to run
+ * @param {string[]} args commandline arguments
+ * @returns {Promise<void>} promise
+ */
+const runCommand = (command, args) => {
+	const cp = require("child_process");
+	return new Promise((resolve, reject) => {
+		const executedCommand = cp.spawn(command, args, {
+			stdio: "inherit",
+			shell: true
+		});
+
+		executedCommand.on("error", error => {
+			reject(error);
+		});
+
+		executedCommand.on("exit", code => {
+			if (code === 0) {
+				resolve();
+			} else {
+				reject();
+			}
+		});
+	});
+};
+
+/**
+ * @param {string} packageName name of the package
+ * @returns {boolean} is the package installed?
+ */
+const isInstalled = packageName => {
+	try {
+		require.resolve(packageName);
+
+		return true;
+	} catch (err) {
+		return false;
+	}
+};
+
+/**
+ * @typedef {Object} CliOption
+ * @property {string} name display name
+ * @property {string} package npm package name
+ * @property {string} binName name of the executable file
+ * @property {string} alias shortcut for choice
+ * @property {boolean} installed currently installed?
+ * @property {boolean} recommended is recommended
+ * @property {string} url homepage
+ * @property {string} description description
+ */
+
+/** @type {CliOption[]} */
+const CLIs = [
+	{
+		name: "webpack-cli",
+		package: "webpack-cli",
+		binName: "webpack-cli",
+		alias: "cli",
+		installed: isInstalled("webpack-cli"),
+		recommended: true,
+		url: "https://github.com/webpack/webpack-cli",
+		description: "The original webpack full-featured CLI."
+	},
+	{
+		name: "webpack-command",
+		package: "webpack-command",
+		binName: "webpack-command",
+		alias: "command",
+		installed: isInstalled("webpack-command"),
+		recommended: false,
+		url: "https://github.com/webpack-contrib/webpack-command",
+		description: "A lightweight, opinionated webpack CLI."
+	}
+];
+
+const installedClis = CLIs.filter(cli => cli.installed);
+
+if (installedClis.length === 0) {
+	const path = require("path");
+	const fs = require("fs");
+	const readLine = require("readline");
+
+	let notify =
+		"One CLI for webpack must be installed. These are recommended choices, delivered as separate packages:";
+
+	for (const item of CLIs) {
+		if (item.recommended) {
+			notify += `\n - ${item.name} (${item.url})\n   ${item.description}`;
+		}
+	}
+
+	console.error(notify);
+
+	const isYarn = fs.existsSync(path.resolve(process.cwd(), "yarn.lock"));
+
+	const packageManager = isYarn ? "yarn" : "npm";
+	const installOptions = [isYarn ? "add" : "install", "-D"];
+
+	console.error(
+		`We will use "${packageManager}" to install the CLI via "${packageManager} ${installOptions.join(
+			" "
+		)}".`
+	);
+
+	const question = `Do you want to install 'webpack-cli' (yes/no): `;
+
+	const questionInterface = readLine.createInterface({
+		input: process.stdin,
+		output: process.stderr
+	});
+	questionInterface.question(question, answer => {
+		questionInterface.close();
+
+		const normalizedAnswer = answer.toLowerCase().startsWith("y");
+
+		if (!normalizedAnswer) {
+			console.error(
+				"You need to install 'webpack-cli' to use webpack via CLI.\n" +
+					"You can also install the CLI manually."
+			);
+			process.exitCode = 1;
+
+			return;
+		}
+
+		const packageName = "webpack-cli";
+
+		console.log(
+			`Installing '${packageName}' (running '${packageManager} ${installOptions.join(
+				" "
+			)} ${packageName}')...`
+		);
+
+		runCommand(packageManager, installOptions.concat(packageName))
+			.then(() => {
+				require(packageName); //eslint-disable-line
+			})
+			.catch(error => {
+				console.error(error);
+				process.exitCode = 1;
+			});
+	});
+} else if (installedClis.length === 1) {
+	const path = require("path");
+	const pkgPath = require.resolve(`${installedClis[0].package}/package.json`);
+	// eslint-disable-next-line node/no-missing-require
+	const pkg = require(pkgPath);
+	// eslint-disable-next-line node/no-missing-require
+	require(path.resolve(
+		path.dirname(pkgPath),
+		pkg.bin[installedClis[0].binName]
+	));
+} else {
+	console.warn(
+		`You have installed ${installedClis
+			.map(item => item.name)
+			.join(
+				" and "
+			)} together. To work with the "webpack" command you need only one CLI package, please remove one of them or use them directly via their binary.`
+	);
+
+	// @ts-ignore
+	process.exitCode = 1;
+}