Package Exports
- gulp-babel
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Readme
gulp-babel 
Use next generation JavaScript, today, with Babel
Issues with the output should be reported on the Babel issue tracker.
Install
$ npm install --save-dev gulp-babel babel-preset-es2015Usage
const gulp = require('gulp');
const babel = require('gulp-babel');
gulp.task('default', () => {
return gulp.src('src/app.js')
.pipe(babel({
presets: ['es2015']
}))
.pipe(gulp.dest('dist'));
});API
babel([options])
options
See the Babel options, except for sourceMap and filename which is handled for you.
Source Maps
Use gulp-sourcemaps like this:
const gulp = require('gulp');
const sourcemaps = require('gulp-sourcemaps');
const babel = require('gulp-babel');
const concat = require('gulp-concat');
gulp.task('default', () => {
return gulp.src('src/**/*.js')
.pipe(sourcemaps.init())
.pipe(babel({
presets: ['es2015']
}))
.pipe(concat('all.js'))
.pipe(sourcemaps.write('.'))
.pipe(gulp.dest('dist'));
});Babel Metadata
Files in the stream are annotated with a babel property, which contains the metadata from babel.transform().
Example
const gulp = require('gulp');
const babel = require('gulp-babel');
const through = require('through2');
function logFileHelpers() {
return through.obj((file, enc, cb) => {
console.log(file.babel.usedHelpers);
cb(null, file);
});
}
gulp.task('default', () => {
return gulp.src('src/**/*.js')
.pipe(babel({
presets: ['es2015']
}))
.pipe(logFileHelpers);
})Runtime
If you're attempting to use features such as generators, you'll need to add transform-runtime as a plugin, to include the Babel runtime. Otherwise, you'll receive the error: regeneratorRuntime is not defined.
Install the runtime:
$ npm install --save-dev babel-plugin-transform-runtimeUse it as plugin:
const gulp = require('gulp');
const babel = require('gulp-babel');
gulp.task('default', () => {
return gulp.src('src/app.js')
.pipe(babel({
plugins: ['transform-runtime']
}))
.pipe(gulp.dest('dist'));
});License
MIT © Sindre Sorhus