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nuxt-polyfill

v1.0.3

Published

Ease adding polyfills to Nuxt.js projects using Polyfill.io among others

Downloads

22,065

Readme

nuxt-polyfill

npm

Ease adding polyfills to your Nuxt.js project.

Requires Nuxt >= 2

Features

  • ✔ Easy to configure
  • ❔ Lazy load polyfills only if needed by using Feature Detection
  • ⚡️ Aims to be as fast as possible
  • 🔧 Supports any polyfill as NPM package or JS file
  • ⭐️ Supports polyfills from polyfill.io
  • Detect function can be called before loading the features
  • Polyfills are not included in the bundle but loaded separately

Getting started

npm install nuxt-polyfill

Add the module to your nuxt.config.js:

export default {
    
    // Configure polyfills:
    polyfill: {
        features: [
            /* 
                Feature without detect:

                Note: 
                  This is not recommended for most polyfills
                  because the polyfill will always be loaded, parsed and executed.
            */
            {
                require: 'url-polyfill' // NPM package or require path of file
            },

            /* 
                Feature with detect:

                Detection is better because the polyfill will not be 
                loaded, parsed and executed if it's not necessary.
            */
            {
                require: 'intersection-observer',
                detect: () => 'IntersectionObserver' in window,
            },

            /*
                Feature with detect & install:

                Some polyfills require a installation step
                Hence you could supply a install function which accepts the require result
            */
            {
                require: 'smoothscroll-polyfill',

                // Detection found in source: https://github.com/iamdustan/smoothscroll/blob/master/src/smoothscroll.js
                detect: () => 'scrollBehavior' in document.documentElement.style && window.__forceSmoothScrollPolyfill__ !== true,

                // Optional install function called client side after the package is required:
                install: (smoothscroll) => smoothscroll.polyfill()
            }
        ]
    },
    
    // Add it to the modules section:
    modules: [
        'nuxt-polyfill',
    ]
}

Note: You need to install the NPM packages manually.

In order to run this example:

npm i url-polyfill intersection-observer smoothscroll-polyfill

Useful polyfill links (including detection functions):

Documentation

feature.name

Type String. Not required.

feature.require

Type String. NPM package or require path of JS file.

feature.detect

Type Function. Detection function, should return a Boolean.

feature.install

Type Function. Installation function. First argument is the default export in the required file/package.

feature.mode

Not supported yet. Only client polyfills are supported.

Roadmap

  • Support for server side polyfills
  • Support for require array (necessary for Intl polyfill)