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322 lines
11 KiB
322 lines
11 KiB
7 years ago
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module.exports = function (grunt) {
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// var esperanto = require('esperanto');
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var rollup = require('rollup').rollup;
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// var babel = require('rollup-plugin-babel');
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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, moveType) {
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var comments = [], rest = [], skipId = -1;
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code.split('\n').forEach(function (line, i) {
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var isComment = false;
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if (line.trim().slice(0, 3) === '//!') {
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isComment = true;
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}
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if (isComment && moveType === 'main-only') {
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if (i === skipId + 1 ||
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line.trim() === '//! moment.js locale configuration') {
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skipId = i;
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// continue to next line
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return;
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}
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}
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if (isComment) {
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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 === 'none') {
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return '';
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}
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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 rollupBundle(opts) {
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// entry, umdName, skipMoment
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var rollupOpts = {
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entry: opts.entry,
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plugins: [
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// babel({})
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]
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}, bundleOpts = {
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format: 'umd',
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moduleName: opts.umdName != null ? opts.umdName : 'not_used'
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};
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if (opts.skipMoment) {
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// And this is what people call progress?
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rollupOpts.external = [
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'./moment',
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'../moment',
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'../../moment',
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path.resolve('src/moment'),
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path.resolve('build/tmp/moment')
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];
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bundleOpts.globals = {};
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bundleOpts.globals[path.resolve('src/moment')] = 'moment';
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bundleOpts.globals[path.resolve('build/tmp/moment')] = 'moment';
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}
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return rollup(rollupOpts).then(function (bundle) {
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return bundle.generate(bundleOpts);
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}).then(function (result) {
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return result.code;
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});
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}
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function transpile(opts) {
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// base, entry, skipMoment, headerFile, skipLines, target
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var umdName = opts.headerFile != null && opts.headerFile !== 'none' ? 'not_used' : opts.umdName,
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headerFile = opts.headerFile ? opts.headerFile : 'templates/default.js',
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header = getHeaderByFile(headerFile),
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skipLines = opts.skipLines != null ? opts.skipLines : 5;
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return rollupBundle({
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entry: path.join(opts.base, opts.entry),
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skipMoment: opts.skipMoment != null ? opts.skipMoment : false,
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umdName: umdName
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}).then(function (code) {
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var fixed = header + code.split('\n').slice(skipLines).join('\n');
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if (opts.moveComments) {
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fixed = moveComments(fixed, opts.moveComments);
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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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skipMoment: opts.skipMoment,
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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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skipMoment: opts.skipMoment
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});
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}
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function generateLocales(target, localeFiles, opts) {
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var files = localeFiles,
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code = [
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'import moment from "./moment";',
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'export default moment;'
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].concat(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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})).concat([
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// Reset the language back to 'en', because every defineLocale
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// also sets it.
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'moment.locale(\'en\');'
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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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skipMoment: opts.skipMoment,
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headerFile: opts.skipMoment === true ? 'templates/locale-header.js' : 'templates/default.js',
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skipLines: opts.skipMoment === true ? 7 : 5
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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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skipLines: 5,
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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: 7,
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moveComments: true,
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targetDir: 'build/umd',
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skipMoment: true
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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: 7,
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moveComments: true,
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targetDir: 'build/umd',
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skipMoment: true
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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: 7,
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moveComments: true,
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targetDir: 'build/umd',
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skipMoment: true
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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(
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'build/umd/min/locales.js',
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grunt.file.expand({cwd: 'src'}, 'locale/*.js'),
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{skipMoment: true}
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);
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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 generateLocales(
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'build/umd/min/moment-with-locales.js',
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grunt.file.expand({cwd: 'src'}, 'locale/*.js'),
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{skipMoment: false}
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);
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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',
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localeFiles,
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{skipMoment: true}
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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 generateLocales(
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'build/umd/min/moment-with-locales.custom.js',
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localeFiles,
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{skipMoment: false});
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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(function () {
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var moment = require('../build/umd/min/moment-with-locales.custom.js');
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if (moment.locales().filter(function (locale) {
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return locale !== 'en';
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}).length !== localeFiles.length) {
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throw new Error(
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'You probably specified locales requiring ' +
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'parent locale, but didn\'t specify parent');
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}
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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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