feat(scaffold): add typescript support

Author: dhruvdutt

packages/webpack-scaffold/.gitignore

@@ -0,0 +1 @@
+*.js

packages/webpack-scaffold/.npmignore

@@ -1 +1,3 @@
 __tests__
+tsconfig.json
+*.ts

packages/webpack-scaffold/index.js

@@ -0,0 +1,121 @@
+import * as jscodeshift from "jscodeshift";
+
+interface IScaffoldBaseObject {
+	type: string;
+	name: string;
+	message: string;
+}
+
+interface IInquirerList extends IScaffoldBaseObject {
+	choices?: string[];
+}
+
+interface IInquirerInput extends IScaffoldBaseObject {
+	validate?: Function;
+}
+
+export function createArrowFunction(value: Function): string {
+	return `() => '${value}'`;
+}
+
+export function createRegularFunction(value: Function): string {
+	return `function () {\n return '${value}'\n}`;
+}
+
+export function createDynamicPromise(arrOrString: Function[] | string): string {
+	if (Array.isArray(arrOrString)) {
+		return (
+			"() => new Promise((resolve) => resolve([" +
+			arrOrString.map((func: Function) => {
+				return "'" + func + "'";
+			}) +
+			"]))"
+		);
+	} else {
+		return "() => new Promise((resolve) => resolve(" + "'" + arrOrString + "'" + "))";
+	}
+}
+
+export function createAssetFilterFunction(value: string): string {
+	return `function (assetFilename) {\n return assetFilename.endsWith('.${value}');\n}`;
+}
+
+export function createExternalFunction(regexp: string): string {
+	return (
+		"\n function (context, request, callback) {\n if (" +
+		"/" +
+		regexp +
+		"/.test(request)){" +
+		"\n" +
+		"   return callback(null, 'commonjs' + request);\n}\n" +
+		"callback();\n}"
+	);
+}
+
+export function parseValue(regexp: string): string {
+	return jscodeshift(regexp);
+}
+
+export function createRequire(val: string): string {
+	return `const ${val} = require('${val}');`;
+}
+
+export function List(name: string, message: string, choices: string[]): IInquirerList {
+	return {
+		choices,
+		message,
+		name,
+		type: "list",
+	};
+}
+
+export function RawList(name: string, message: string, choices: string[]): IInquirerList {
+	return {
+		choices,
+		message,
+		name,
+		type: "rawlist",
+	};
+}
+
+export function CheckList(name: string, message: string, choices: string[]): IInquirerList {
+	return {
+		choices,
+		message,
+		name,
+		type: "checkbox",
+	};
+}
+
+export function Input(name: string, message: string): IInquirerInput {
+	return {
+		message,
+		name,
+		type: "input",
+	};
+}
+
+export function InputValidate(name: string, message: string, cb: Function): IInquirerInput {
+	return {
+		message,
+		name,
+		type: "input",
+		validate: cb,
+	};
+}
+
+export function Confirm(name: string, message: string): IScaffoldBaseObject {
+	return {
+		message,
+		name,
+		type: "confirm",
+	};
+}
+
+export function AutoComplete(name: string, message: string, options: object = {}) {
+	return Object.assign({
+		message,
+		name,
+		type: "autocomplete",
+	}, options);
+}