johnny-cli/src/Dll/index.js

CLI for Johnny Deps

// @flow
import {dllWebpackConfig} from 'templates';
import fs from 'fs';
import path from 'path';
import webpack from 'webpack';

export default (DllParams: {
	path: string,
}) => ({
	create: async function(params: {
		packages: Array<string>,
	}) {
		try {
			fs.mkdirSync(DllParams.path);
		} catch(error) {
			throw 'Dll directory already exists. Please remove the dir or specify another one in --path option.';
		}

		await this.build({packages: params.packages});
	},

	// Run webpack in order to build dll
	// Compilation starts if only callback function provided
	build: (params: {
		packages: Array<string>,
	}) => new Promise((resolve, reject) => webpack(dllWebpackConfig({
		packages: params.packages,
		path    : path.resolve(DllParams.path),
	}), (err, stats) => {
		// WARN Get error from webpack properly
		if(err || stats.hasErrors())
			throw `Dll webpack compilation failed: ${err || stats.toJson().errors.join('\n')}`

		resolve();
	})),
});