Object.assign Babel with external npm dep

Question

I have an external NPM dependency that uses Object.assign. I want to use Babel, to assure compatibility with old browsers, either transforming Object.assign via helper or substituting it using another method, but it is not working.

PS: I can use a polyfill at the top of the code, i want to avoid this since it is a library ( https://babeljs.io/docs/plugins/transform-object-assign/ )

The dependency is : https://github.com/krux/postscribe via var postscribe = require('postscribe');

my .babelrc conf:

{
  "presets": [
     ["env", {
         "targets": {
            "browsers": ["Android 4", "iOS 7"]
         }
     }]
],
  "plugins": ["transform-object-assign"]
}

Gulp conf:

gulp.task('adtag', function () {
// set up the browserify instance on a task basis
var b = browserify({
    entries: './src/adtag/main.js',
    debug: true
}).transform(babelify)

return b.bundle()
    .pipe(source('smaatoAdTag.min.js'))
    .pipe(buffer())
    .pipe(sourcemaps.init({
        loadMaps: true
    }))
    // Add transformation tasks to the pipeline here.
    .pipe(uglify())
    .on('error', gutil.log)
    .pipe(sourcemaps.write('./'))
    .pipe(gulp.dest('./dist/adtag/'));
}); 

Is there any way to substitute Object.assign if is in a dependency and not in the main code?

Answer 1

Check out the docs for babelify

You could use :

browserify().transform("babelify", {
  global: true,
  ignore: /\/node_modules\/(?!postscribe\/)/
});