embark-area-51/lib/pipeline/webpackProcess.js

154 lines
4.0 KiB
JavaScript

const async = require('async');
const webpack = require('webpack');
const utils = require('../utils/utils');
const fs = require('../core/fs');
const constants = require('../constants');
const HardSourceWebpackPlugin = require('hard-source-webpack-plugin');
// Override process.chdir so that we have a partial-implementation PWD for Windows
const realChdir = process.chdir;
process.chdir = (...args) => {
if (!process.env.PWD) {
process.env.PWD = process.cwd();
}
realChdir(...args);
};
let webpackProcess;
class WebpackProcess {
constructor(_options) {
this.interceptLogs();
}
interceptLogs() {
const context = {};
context.console = console;
context.console.log = this.log.bind(this, 'log');
context.console.warn = this.log.bind(this, 'warn');
context.console.info = this.log.bind(this, 'info');
context.console.debug = this.log.bind(this, 'debug');
context.console.trace = this.log.bind(this, 'trace');
context.console.dir = this.log.bind(this, 'dir');
}
log(type, ...messages) {
process.send({result: constants.pipeline.log, message: messages, type});
}
build(file, importsList, callback) {
const self = this;
let realCwd;
async.waterfall([
function findImports(next) {
self.webpackRun(file.filename, {}, false, importsList, false, next);
},
function changeCwd(next) {
realCwd = utils.pwd();
process.chdir(fs.embarkPath(''));
next();
},
function runWebpack(next) {
self.webpackRun(file.filename, {}, true, importsList, true, next);
},
function changeCwdBack(next) {
process.chdir(realCwd);
next();
}
], (err) => {
process.chdir(realCwd);
callback(err);
});
}
webpackRun(filename, options, includeModules, importsList, detectErrors, callback) {
let defaultOptions = {
entry: fs.dappPath(filename),
output: {
libraryTarget: 'umd',
path: fs.dappPath('.embark'),
filename: filename
},
resolve: {
alias: importsList,
modules: [
fs.embarkPath('node_modules'),
fs.dappPath('node_modules')
]
},
externals: function (context, request, callback) {
callback();
},
plugins: [new HardSourceWebpackPlugin()]
};
let webpackOptions = utils.recursiveMerge(defaultOptions, options);
if (includeModules) {
webpackOptions.module = {
rules: [
{
test: /\.css$/,
use: [{loader: "style-loader"}, {loader: "css-loader"}]
},
{
test: /\.scss$/,
use: [{loader: "style-loader"}, {loader: "css-loader"}]
},
{
test: /\.(png|woff|woff2|eot|ttf|svg)$/,
loader: 'url-loader?limit=100000'
},
{
test: /\.js$/,
loader: "babel-loader",
exclude: /(node_modules|bower_components)/,
options: {
presets: ['babel-preset-es2016', 'babel-preset-es2017', 'babel-preset-react'].map(require.resolve),
plugins: ["babel-plugin-webpack-aliases"].map(require.resolve),
compact: false
}
}
]
};
}
webpack(webpackOptions).run((err, stats) => {
if (err) {
console.error(err);
}
if (!detectErrors) {
return callback();
}
if (stats.hasErrors()) {
return callback(stats.toJson().errors.join("\n"));
}
callback();
});
}
}
process.on('message', (msg) => {
if (msg.action === constants.pipeline.init) {
webpackProcess = new WebpackProcess(msg.options);
return process.send({result: constants.pipeline.initiated});
}
if (msg.action === constants.pipeline.build) {
return webpackProcess.build(msg.file, msg.importsList, (err) => {
process.send({result: constants.pipeline.built, error: err});
});
}
});
process.on('exit', () => {
process.exit(0);
});