Awesome

grunt-autopolyfiller

Autopolyfiller - Precise polyfills. Automatic and minimal polyfills for your code.

Getting Started

This plugin requires Grunt.

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-autopolyfiller --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

grunt.loadNpmTasks('grunt-autopolyfiller');

The "autopolyfiller" task

Overview

In your project's Gruntfile, add a section named autopolyfiller to the data object passed into grunt.initConfig().

grunt.initConfig({
    autopolyfiller: {
        options: {
            browsers: ['Chrome 7']
        },
        your_target: {
            'result_polyfill_file.js': ['list/of/your/**/*.js']
        }
    }
});

Options

options.browsers

Type: Array Default value: [] - all browsers

options.include

Type: Array Default value: [] - list of extra polyfills to add

options.exclude

Type: Array Default value: [] - list of polyfills to remove

options.parser

Type: String Default value: null - custom parser as a node module name

options.parser_options

Type: Object Default value: {} - custom parser options

List of target browsers. Autopolyfiller uses Autoprefixer-style browsers format. See Browsers format for details.

Usage Examples

Multiply polyfills

By default autopolyfiller will generate polyfills for all browsers.

grunt.initConfig({
    autopolyfiller: {
        for_all_browsers: {
            files: {
                'www/file_with_all_polyfills.js': ['your/js/**/*.js'],
                'www/another_polyfills.js': ['some/js/**/*.js'],
            }
        }
    }
});

Browsers targets

You can specify list of target browsers to reduce amount of polyfills.

grunt.initConfig({
    autopolyfiller: {
        latest_browsers_and_ie: {
            options: {
                browsers: ['last 2 version', 'ie 8', 'ie 9']
            },
            files: {
                'www/file_with_all_polyfills.js': ['your/js/**/*.js']
            }
        }
    }
});

Default browsers of Autoprefixer

grunt.initConfig({
    autopolyfiller: {
        for_default_autoprefixer_browsers: {
            options: {
                browsers: require('autoprefixer').default
            },
            files: {
                'www/file_with_all_polyfills.js': ['your/js/**/*.js']
            }
        }
    }
});

Removing polyfills

grunt.initConfig({
    autopolyfiller: {
        without_promise_polyfill: {
            options: {
                exclude: ['Promise']
            },
            files: {
                'www/file_with_all_polyfills.js': ['your/js/**/*.js']
            }
        }
    }
});