277 lines
9.5 KiB
JavaScript
Vendored
277 lines
9.5 KiB
JavaScript
Vendored
module.exports = function (grunt) {
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var esperanto = require('esperanto');
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var path = require('path');
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var Promise = require('es6-promise').Promise;
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var TMP_DIR = 'build/tmp';
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function moveComments(code) {
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var comments = [], rest = [];
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code.split('\n').forEach(function (line) {
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if (line.trim().slice(0, 3) === '//!') {
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comments.push(line.trim());
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} else {
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rest.push(line);
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}
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});
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return comments.concat([''], rest).join('\n');
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}
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var headerCache = {};
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function getHeaderByFile(headerFile) {
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if (!(headerFile in headerCache)) {
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headerCache[headerFile] = grunt.file.read(headerFile);
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}
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return headerCache[headerFile];
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}
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function transpile(opts) {
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// base, entry, skip, headerFile, skipLines, target
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var umdName = opts.headerFile ? 'not_used' : opts.umdName,
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header = opts.headerFile ? getHeaderByFile(opts.headerFile) : '',
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skipLines = opts.skipLines ? opts.skipLines : 0;
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return esperanto.bundle({
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base: opts.base,
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entry: opts.entry,
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skip: opts.skip || []
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}).then(function (bundle) {
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var umd = bundle.toUmd({name: umdName}),
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fixed = header + umd.code.split('\n').slice(skipLines).join('\n');
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if (opts.moveComments) {
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fixed = moveComments(fixed);
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}
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grunt.file.write(opts.target, fixed);
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});
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}
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function transpileMany(opts) {
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var batchSize = 50,
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promise = Promise.resolve(null),
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files = grunt.file.expand({cwd: opts.base}, opts.pattern),
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i,
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transpileOne = function (i) {
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promise = promise.then(function () {
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return Promise.all(files.slice(i, i + batchSize).map(function (file) {
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return transpile({
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base: opts.base,
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entry: file,
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headerFile: opts.headerFile,
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skip: opts.skip,
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skipLines: opts.skipLines,
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moveComments: opts.moveComments,
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target: path.join(opts.targetDir, file)
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});
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}));
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});
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};
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for (i = 0; i < files.length; i += batchSize) {
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transpileOne(i);
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}
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return promise;
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}
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function prepareTemp(base) {
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var files = grunt.file.expand({cwd: base}, '**/*.js'),
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tmpDir = TMP_DIR;
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if (grunt.file.exists(tmpDir)) {
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return;
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}
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files.forEach(function (file) {
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grunt.file.copy(path.join(base, file), path.join(tmpDir, file));
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});
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}
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function transpileCode(opts) {
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var entry = opts.entry || path.basename(opts.target);
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prepareTemp(opts.base);
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grunt.file.write(path.join(TMP_DIR, entry), opts.code);
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return transpile({
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base: TMP_DIR,
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entry: entry,
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umdName: opts.umdName || 'not_used',
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headerFile: opts.headerFile,
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skipLines: opts.skipLines,
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moveComments: opts.moveComments,
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target: opts.target,
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skip: opts.skip
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});
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}
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function generateLocales(target, localeFiles) {
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var files = localeFiles,
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code = files.map(function (file) {
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var identifier = path.basename(file, '.js').replace('-', '_');
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return 'import ' + identifier + ' from "./' + file + '";';
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}).join('\n');
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return transpileCode({
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base: 'src',
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code: code,
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target: target,
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skip: ['moment'],
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headerFile: 'templates/locale-header.js',
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skipLines: 5
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});
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}
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function generateMomentWithLocales(target, localeFiles) {
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var files = localeFiles,
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importCode = files.map(function (file) {
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var identifier = path.basename(file, '.js').replace('-', '_');
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var fileNoExt = file.replace('.js', '');
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return 'import ' + identifier + ' from "./' + fileNoExt + '";';
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}).join('\n'),
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code = 'import * as moment_export from "./moment";\n\n' +
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importCode + '\n\n' +
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'export default moment_export;';
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return transpileCode({
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base: 'src',
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code: code,
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umdName: 'moment',
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target: target
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}).then(function () {
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var code = grunt.file.read(target);
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var getDefaultRegExp = new RegExp('var ([a-z$_]+) =\\s+{[^]\\s+get default \\(\\) { return ([a-z$_]+); }[^]\\s+}', '');
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var crap = code.match(getDefaultRegExp);
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if (crap.length !== 3) {
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grunt.file.write('/tmp/crap.js', code);
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throw new Error('Failed to detect get default crap, check /tmp/crap.js');
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}
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code = code.replace(getDefaultRegExp, '');
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code = code.replace('var moment_with_locales = ' + crap[1], 'var moment_with_locales = ' + crap[2]);
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if (code.match('get default')) {
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grunt.file.write('/tmp/crap.js', code);
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throw new Error('Stupid shit es6 get default plaguing the code, check /tmp/crap.js');
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}
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grunt.file.write(target, code);
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});
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}
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grunt.task.registerTask('transpile-raw', 'convert es6 to umd', function () {
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var done = this.async();
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transpile({
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base: 'src',
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entry: 'moment.js',
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umdName: 'moment',
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target: 'build/umd/moment.js',
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moveComments: true
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}).then(function () {
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grunt.log.ok('build/umd/moment.js');
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}).then(function () {
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return transpileMany({
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base: 'src',
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pattern: 'locale/*.js',
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headerFile: 'templates/locale-header.js',
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skipLines: 5,
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moveComments: true,
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targetDir: 'build/umd',
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skip: ['moment']
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});
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}).then(function () {
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grunt.log.ok('build/umd/locale/*.js');
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}).then(function () {
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return transpileMany({
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base: 'src',
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pattern: 'test/moment/*.js',
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headerFile: 'templates/test-header.js',
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skipLines: 5,
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moveComments: true,
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targetDir: 'build/umd',
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skip: ['moment']
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});
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}).then(function () {
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grunt.log.ok('build/umd/test/moment/*.js');
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}).then(function () {
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return transpileMany({
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base: 'src',
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pattern: 'test/locale/*.js',
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headerFile: 'templates/test-header.js',
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skipLines: 5,
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moveComments: true,
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targetDir: 'build/umd',
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skip: ['moment']
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});
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}).then(function () {
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grunt.log.ok('build/umd/test/locale/*.js');
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}).then(function () {
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return generateLocales('build/umd/min/locales.js',
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grunt.file.expand({cwd: 'src'}, 'locale/*.js'));
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}).then(function () {
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grunt.log.ok('build/umd/min/locales.js');
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}).then(function () {
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return generateMomentWithLocales('build/umd/min/moment-with-locales.js',
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grunt.file.expand({cwd: 'src'}, 'locale/*.js'));
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}).then(function () {
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grunt.log.ok('build/umd/min/moment-with-locales.js');
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}).then(done, function (e) {
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grunt.log.error('error transpiling', e);
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done(e);
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});
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});
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grunt.task.registerTask('transpile-custom-raw',
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'build just custom language bundles',
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function (locales) {
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var done = this.async();
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var localeFiles = locales.split(',').map(function (locale) {
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var file = grunt.file.expand({cwd: 'src'}, 'locale/' + locale + '.js');
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if (file.length !== 1) {
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// we failed to find a locale
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done(new Error('could not find locale: ' + locale));
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done = null;
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} else {
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return file[0];
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}
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});
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// There was an issue with a locale
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if (done == null) {
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return;
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}
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return generateLocales(
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'build/umd/min/locales.custom.js', localeFiles
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).then(function () {
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grunt.log.ok('build/umd/min/locales.custom.js');
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}).then(function () {
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return generateMomentWithLocales('build/umd/min/moment-with-locales.custom.js',
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localeFiles);
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}).then(function () {
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grunt.log.ok('build/umd/min/moment-with-locales.custom.js');
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}).then(done, function (e) {
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grunt.log.error('error transpiling-custom', e);
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done(e);
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});
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});
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grunt.config('clean.build', [
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'build'
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]);
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grunt.config('concat.tests', {
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src: 'build/umd/test/**/*.js',
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dest: 'build/umd/min/tests.js'
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});
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grunt.task.registerTask('transpile',
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'builds all es5 files, optinally creating custom locales',
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function (locales) {
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var tasks = [
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'clean:build',
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'transpile-raw',
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'concat:tests'
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];
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if (locales) {
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tasks.push('transpile-custom-raw:' + locales);
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}
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grunt.task.run(tasks);
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});
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};
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