133 lines
3.9 KiB
JavaScript
133 lines
3.9 KiB
JavaScript
#! /usr/bin/env node
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/*************************************************************
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*
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* Copyright (c) 2018 The MathJax Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview webpack the component in the current directory
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*
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* @author dpvc@mathjax.org (Davide Cervone)
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*/
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const fs = require('fs');
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const path = require('path');
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const {spawn} = require('child_process');
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/**
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* @param {string} name The file name to turn into a Regular expression
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* @return {RegExp} The regular expression for the name,
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*/
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function fileRegExp(name) {
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return new RegExp(name.replace(/([\\.{}[\]()?*^$])/g, '\\$1'), 'g');
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}
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/**
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* @param {Object} The file or asset data whose size is to be returned
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* @return {string} The string giving the size in KB
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*/
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function fileSize(file) {
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return ' (' + (file.size / 1024).toFixed(2).replace(/\.?0+$/, '') + ' KB)';
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}
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/**
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* Regular expressions for the components directory and the MathJax .js location
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*/
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const compRE = fileRegExp(path.dirname(__dirname));
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const rootRE = fileRegExp(path.join(path.dirname(path.dirname(__dirname)), 'js'));
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const nodeRE = fileRegExp(path.join(path.dirname(path.dirname(__dirname)), 'node_modules'));
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/**
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* @return {JSON} The parsed JSON from webpack
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*/
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async function readJSON() {
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return new Promise((ok, fail) => {
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const buffer = [];
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const child = spawn('npx', ['webpack', '--json']);
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child.stdout.on('data', (data) => buffer.push(String(data)));
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child.stdout.on('close', (code) => {
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const json = JSON.parse(buffer.join(''));
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if (json.errors && json.errors.length) {
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fail(json.errors[0].message);
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}
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ok(json);
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});
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});
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}
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/**
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* Run webpack if there is a configuration file for it
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*
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* @param {string} dir The directory to pack
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*/
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async function webpackLib(dir) {
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try {
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process.chdir(dir);
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const dirRE = fileRegExp(path.resolve(dir));
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//
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// Get js directory from the webpack.config.js file
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//
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const jsdir = require(path.resolve(dir, 'webpack.config.js')).plugins[0].definitions.__JSDIR__;
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const jsRE = fileRegExp(jsdir);
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const libRE = fileRegExp(path.resolve(jsdir, '..', 'components'));
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//
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// Get the json from webpack and print the asset name and size
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//
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const json = await readJSON();
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for (const asset of json.assets) {
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console.log(asset.name + fileSize(asset));
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}
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//
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// Sort the modules and print their names and sizes
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//
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const modules = json.modules;
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for (const module of modules) {
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module.name = path.resolve(dir, module.name)
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.replace(/ \+ \d+ modules/, '')
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.replace(dirRE, '.');
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}
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const list = [];
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for (const module of modules) {
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if (module.moduleType.match(/javascript/)) {
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let name = module.name
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.replace(compRE, '[components]')
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.replace(rootRE, '[mathjax]')
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.replace(nodeRE, '[node]')
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.replace(jsRE, '[js]')
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.replace(libRE, '[lib]');
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if (name.charAt(0) !== '.' && name.charAt(0) !== '[') {
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name = path.relative(dir, name);
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}
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list.push(' ' + name + fileSize(module));
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}
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}
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console.log(
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list
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.filter(a => a.slice(2, 4) === './').sort()
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.concat(list.filter(a => a.slice(2, 4) !== './').sort())
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.join('\n')
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);
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} catch (err) {
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console.error(err);
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}
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}
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webpackLib(process.argv[2] || '.');
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