1 files changed, 142 insertions, 0 deletions
diff --git a/node_modules/webpack-cli/bin/utils/prompt-command.js b/node_modules/webpack-cli/bin/utils/prompt-command.js
new file mode 100644
index 0000000..20a99a1
--- /dev/null
+++ b/node_modules/webpack-cli/bin/utils/prompt-command.js
@@ -0,0 +1,142 @@
+// based on https://github.com/webpack/webpack/blob/master/bin/webpack.js
+
+/**
+ * @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();
+			}
+		});
+	});
+};
+
+const npmGlobalRoot = () => {
+	const cp = require("child_process");
+	return new Promise((resolve, reject) => {
+		const command = cp.spawn("npm", ["root", "-g"]);
+		command.on("error", error => reject(error));
+		command.stdout.on("data", data => resolve(data.toString()));
+		command.stderr.on("data", data => reject(data));
+	});
+};
+
+const runWhenInstalled = (packages, pathForCmd, ...args) => {
+	const currentPackage = require(pathForCmd);
+	const func = currentPackage.default;
+	if (typeof func !== "function") {
+		throw new Error(`@webpack-cli/${packages} failed to export a default function`);
+	}
+	return func(...args);
+};
+
+module.exports = function promptForInstallation(packages, ...args) {
+	const nameOfPackage = "@webpack-cli/" + packages;
+	let packageIsInstalled = false;
+	let pathForCmd;
+	try {
+		const path = require("path");
+		const fs = require("fs");
+		pathForCmd = path.resolve(process.cwd(), "node_modules", "@webpack-cli", packages);
+		if (!fs.existsSync(pathForCmd)) {
+			const globalModules = require("global-modules");
+			pathForCmd = globalModules + "/@webpack-cli/" + packages;
+			require.resolve(pathForCmd);
+		} else {
+			require.resolve(pathForCmd);
+		}
+		packageIsInstalled = true;
+	} catch (err) {
+		packageIsInstalled = false;
+	}
+	if (!packageIsInstalled) {
+		const path = require("path");
+		const fs = require("fs");
+		const readLine = require("readline");
+		const isYarn = fs.existsSync(path.resolve(process.cwd(), "yarn.lock"));
+
+		const packageManager = isYarn ? "yarn" : "npm";
+		const options = ["install", "-D", nameOfPackage];
+
+		if (isYarn) {
+			options[0] = "add";
+		}
+
+		if (packages === "init") {
+			if (isYarn) {
+				options.splice(1, 1); // remove '-D'
+				options.splice(0, 0, "global");
+			} else {
+				options[1] = "-g";
+			}
+		}
+
+		const commandToBeRun = `${packageManager} ${options.join(" ")}`;
+
+		const question = `Would you like to install ${packages}? (That will run ${commandToBeRun}) (yes/NO) : `;
+
+		console.error(`The command moved into a separate package: ${nameOfPackage}`);
+		const questionInterface = readLine.createInterface({
+			input: process.stdin,
+			output: process.stdout
+		});
+		questionInterface.question(question, answer => {
+			questionInterface.close();
+			switch (answer.toLowerCase()) {
+				case "y":
+				case "yes":
+				case "1": {
+					runCommand(packageManager, options)
+						.then(_ => {
+							if (packages === "init") {
+								npmGlobalRoot()
+									.then(root => {
+										const pathtoInit = path.resolve(root.trim(), "@webpack-cli", "init");
+										return pathtoInit;
+									})
+									.then(pathForInit => {
+										return require(pathForInit).default(...args);
+									})
+									.catch(error => {
+										console.error(error);
+										process.exitCode = 1;
+									});
+								return;
+							}
+
+							pathForCmd = path.resolve(process.cwd(), "node_modules", "@webpack-cli", packages);
+							return runWhenInstalled(packages, pathForCmd, ...args);
+						})
+						.catch(error => {
+							console.error(error);
+							process.exitCode = 1;
+						});
+					break;
+				}
+				default: {
+					console.error(`${nameOfPackage} needs to be installed in order to run the command.`);
+					process.exitCode = 1;
+					break;
+				}
+			}
+		});
+	} else {
+		return runWhenInstalled(packages, pathForCmd, ...args);
+	}
+};