mathjs/gulpfile.js at develop · intervalia/mathjs · GitHub

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// @ts-nocheck

const fs = require('fs')

const path = require('path')

const gulp = require('gulp')

const gutil = require('gulp-util')

const webpack = require('webpack')

const babel = require('gulp-babel')

const uglify = require('uglify-js')

const docgenerator = require('./tools/docgenerator')

const validateAsciiChars = require('./tools/validateAsciiChars')

const ENTRY = './src/main.js'

const HEADER = './src/header.js'

const VERSION = './src/version.js'

const COMPILE_SRC = './src/**/*.js'

const COMPILE_LIB = './lib'

const FILE = 'math.js'

const FILE_MIN = 'math.min.js'

const FILE_MAP = 'math.min.map'

const DIST = path.join(__dirname, '/dist')

const REF_SRC = './lib/'

const REF_DEST = './docs/reference/functions'

const REF_ROOT = './docs/reference'

const MATH_JS = DIST + '/' + FILE

// read the version number from package.json

function getVersion () {

return JSON.parse(String(fs.readFileSync('./package.json'))).version

}

// generate banner with today's date and correct version

function createBanner () {

const today = gutil.date(new Date(), 'yyyy-mm-dd') // today, formatted as yyyy-mm-dd

const version = getVersion()

return String(fs.readFileSync(HEADER))

.replace('@@date', today)

.replace('@@version', version)

}

// generate a js file containing the version number

function updateVersionFile () {

const version = getVersion()

fs.writeFileSync(VERSION, 'module.exports = \'' + version + '\'\n' +

'// Note: This file is automatically generated when building math.js.\n' +

'// Changes made in this file will be overwritten.\n')

}

const bannerPlugin = new webpack.BannerPlugin({

banner: createBanner(),

entryOnly: true,

raw: true

})

const webpackConfig = {

entry: ENTRY,

output: {

library: 'math',

libraryTarget: 'umd',

path: DIST,

globalObject: 'this',

filename: FILE

externals: [

'crypto' // is referenced by decimal.js

plugins: [

bannerPlugin

// new webpack.optimize.ModuleConcatenationPlugin()

// TODO: ModuleConcatenationPlugin seems not to work. https://medium.com/webpack/webpack-3-official-release-15fd2dd8f07b

module: {

rules: [

{

test: /\.js$/,

exclude: /node_modules/,

use: 'babel-loader'

}

]

optimization: {

minimize: false

cache: true

}

const uglifyConfig = {

sourceMap: {

filename: FILE,

url: FILE_MAP

output: {

comments: /@license/

}

// create a single instance of the compiler to allow caching

const compiler = webpack(webpackConfig)

function bundle (done) {

// update the banner contents (has a date in it which should stay up to date)

bannerPlugin.banner = createBanner()

updateVersionFile()

compiler.run(function (err, stats) {

if (err) {

gutil.log(err)

}

gutil.log('bundled ' + MATH_JS)

done()

})

}

function compile () {

return gulp.src(COMPILE_SRC)

.pipe(babel())

.pipe(gulp.dest(COMPILE_LIB))

}

function minify (done) {

const oldCwd = process.cwd()

process.chdir(DIST)

try {

const result = uglify.minify({

'math.js': fs.readFileSync(FILE, 'utf8')

}, uglifyConfig)

if (result.error) {

throw result.error

}

fs.writeFileSync(FILE_MIN, result.code)

fs.writeFileSync(FILE_MAP, result.map)

gutil.log('Minified ' + FILE_MIN)

gutil.log('Mapped ' + FILE_MAP)

} catch (e) {

throw e

} finally {

process.chdir(oldCwd)

}

done()

}

function validate (done) {

const childProcess = require('child_process')

// this is run in a separate process as the modules need to be reloaded

// with every validation (and required modules stay in cache).

childProcess.execFile('node', ['./tools/validate'], function (err, stdout, stderr) {

if (err instanceof Error) {

throw err

}

process.stdout.write(stdout)

process.stderr.write(stderr)

done()

})

}

function validateAscii (done) {

const Reset = '\x1b[0m'

const BgRed = '\x1b[41m'

validateAsciiChars.getAllFiles('./src')

.map(validateAsciiChars.validateChars)

.forEach(function (invalidChars) {

invalidChars.forEach(function (res) {

console.log(res.insideComment ? '' : BgRed,

'file:', res.filename,

'ln:' + res.ln,

'col:' + res.col,

'inside comment:', res.insideComment,

'code:', res.c,

'character:', String.fromCharCode(res.c),

Reset

)

})

done()

}

function generateDocs (done) {

docgenerator.iteratePath(REF_SRC, REF_DEST, REF_ROOT)

done()

}

// check whether any of the source files contains non-ascii characters

gulp.task('validate:ascii', validateAscii)

// The watch task (to automatically rebuild when the source code changes)

// Does only generate math.js, not the minified math.min.js

gulp.task('watch', function watch () {

const files = ['package.json', 'index.js', 'src/**/*.js']

const options = {

// ignore version.js else we get an infinite loop since it's updated during bundle

ignored: /version\.js/,

ignoreInitial: false,

delay: 100

}

gulp.watch(files, options, gulp.parallel(bundle, compile))

})

// The default task (called when you run `gulp`)

gulp.task('default', gulp.series(bundle, compile, minify, validate, generateDocs))

mathjs/gulpfile.js at develop · intervalia/mathjs · GitHub

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