Replace requirer with node readline

Removing inquirer and updating package.json

bin/webpack.js

@@ -1,19 +1,17 @@
 #!/usr/bin/env node
-const { exec, execSync } = require("child_process");
-const inquirer = require("inquirer");
-
 function runCommand(command, options) {
+	const cp = require("child_process");
 	return new Promise((resolve, reject) => {
 		const executedCommand = cp.spawn(command, options, {
 			stdio: "inherit"
 		});
 
-		executedCommand.on("error", (error) => {
+		executedCommand.on("error", error => {
 			reject(error);
 		});
 
-		executedCommand.on("exit", (code) => {
+		executedCommand.on("exit", code => {
-			if(code === 0) {
+			if (code === 0) {
 				resolve(true);
 			} else {
 				reject();
@@ -23,69 +21,60 @@ function runCommand(command, options) {
 }
 
 let webpackCliInstalled = false;
-// try {
-// 	const blah = require("webpack-cli"); // eslint-disable-line node/no-missing-require, node/no-extraneous-require, node/no-unpublished-require
-// 	webpackCliInstalled = true;
-// } catch(e) {
-// 	console.log("error", e);
-// 	webpackCliInstalled = false;
-// }
-
 try {
-	execSync("node -e require.resolve('webpack-cli')", { stdio: "ignore" });
+	require.resolve("webpack-cli");
 	webpackCliInstalled = true;
 } catch (err) {
 	webpackCliInstalled = false;
 }
 
-
+if (!webpackCliInstalled) {
-if(webpackCliInstalled) {
-	require("webpack-cli"); // eslint-disable-line node/no-missing-require, node/no-extraneous-require, node/no-unpublished-require
-} else {
 	const path = require("path");
 	const fs = require("fs");
+	const readLine = require("readline");
 	const isYarn = fs.existsSync(path.resolve(process.cwd(), "yarn.lock"));
-	let command;
 
-	let packageManager;
+	const packageManager = isYarn ? "yarn" : "npm";
-	let options = [];
+	const options = ["install", "-D", "webpack-cli"];
-	if(isYarn) {
+
-		packageManager = "yarn";
+	if (isYarn) {
-		options = ["add", "-D", "webpack-cli"];
+		options[0] = "add";
-	} else {
-		packageManager = "npm";
-		options = ["install", "--save-dev", "webpack-cli"];
 	}
 
 	const commandToBeRun = `${packageManager} ${options.join(" ")}`;
 
-	const question = {
+	const question = `Would you like to install webpack-cli? (That will run ${commandToBeRun}) `;
-		type: "confirm",
-		name: "shouldInstall",
-		message: `Would you like to install webpack-cli? (That will run ${commandToBeRun})`,
-		default: true
-	};
 
-	if(isYarn) {
+	console.error("The CLI moved into a separate package: webpack-cli");
-		command = "yarn add webpack-cli -D";
+	const questionInterface = readLine.createInterface({
-	} else {
+		input: process.stdin,
-		command = "npm install --save-dev webpack-cli";
+		output: process.stdout
-	}
+	});
-
+	questionInterface.question(question, answer => {
-	console.error("The CLI moved into a separate package: webpack-cli.\n");
+		switch (answer.toLowerCase()) {
-	inquirer.prompt(question).then((answer) => {
+			case "y":
-		if(answer) {
+			case "yes":
-			console.error("Installing webpack-cli");
+			case "1": {
-			runCommand(packageManager, options).then((result) => {
+				runCommand(packageManager, options)
-				require("webpack-cli"); // eslint-disable-line
+					.then(result => {
-			}).catch((error) => {
+						questionInterface.close();
-				console.error(error);
+						return require("webpack-cli"); //eslint-disable-line
-			});
+					})
-		} else {
+					.catch(error => {
-			process.exitCode(1);
+						questionInterface.close();
+						console.error(error);
+					});
+				break;
+			}
+			default: {
+				console.error("The CLI moved into a separate package: webpack-cli");
+				console.error("It needs to be installed alongside webpack to use the CLI");
+				process.exitCode = 1;
+				questionInterface.close();
+				break;
+			}
 		}
 	});
 } else {
 	require("webpack-cli"); // eslint-disable-line
 }
-

package.json

@@ -12,7 +12,6 @@
     "chrome-trace-event": "^0.1.1",
     "enhanced-resolve": "^4.0.0",
     "eslint-scope": "^3.7.1",
-    "inquirer": "5.1.0",
     "loader-runner": "^2.3.0",
     "loader-utils": "^1.1.0",
     "memory-fs": "~0.4.1",

yarn.lock

@@ -1438,7 +1438,7 @@ extend@~3.0.0, extend@~3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
 
-external-editor@^2.0.4, external-editor@^2.1.0:
+external-editor@^2.0.4:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/external-editor/-/external-editor-2.1.0.tgz#3d026a21b7f95b5726387d4200ac160d372c3b48"
   dependencies:
@@ -2012,24 +2012,6 @@ ini@~1.3.0:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.4.tgz#0537cb79daf59b59a1a517dff706c86ec039162e"
 
-inquirer@5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-5.1.0.tgz#19da508931892328abbbdd4c477f1efc65abfd67"
-  dependencies:
-    ansi-escapes "^3.0.0"
-    chalk "^2.0.0"
-    cli-cursor "^2.1.0"
-    cli-width "^2.0.0"
-    external-editor "^2.1.0"
-    figures "^2.0.0"
-    lodash "^4.3.0"
-    mute-stream "0.0.7"
-    run-async "^2.2.0"
-    rxjs "^5.5.2"
-    string-width "^2.1.0"
-    strip-ansi "^4.0.0"
-    through "^2.3.6"
-
 inquirer@^3.0.6:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-3.3.0.tgz#9dd2f2ad765dcab1ff0443b491442a20ba227dc9"
@@ -3849,12 +3831,6 @@ rx-lite@*, rx-lite@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-4.0.8.tgz#0b1e11af8bc44836f04a6407e92da42467b79444"
 
-rxjs@^5.5.2:
-  version "5.5.6"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.6.tgz#e31fb96d6fd2ff1fd84bcea8ae9c02d007179c02"
-  dependencies:
-    symbol-observable "1.0.1"
-
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
@@ -4320,10 +4296,6 @@ svgo@^0.7.0:
     sax "~1.2.1"
     whet.extend "~0.9.9"
 
-symbol-observable@1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
-
 table@^4.0.1:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/table/-/table-4.0.2.tgz#a33447375391e766ad34d3486e6e2aedc84d2e36"