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toast-loader

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toast-loader

A modern JS/CSS asset loader

3.0.1
Source
npm

Version published: 5 years ago

Weekly downloads: 549; increased by0.37%

Maintainers: 1

Weekly downloads

Created: 5 years ago

Source

Toast v3

Toast is a promise-based asset loader for JS and CSS files. It aims to optimize web site performance by loading and deferring the needed assets.

As a side note: Toast is packaged as an UMD module.

Set up

yarn add toast-loader

Since it have a small footprint, Toast can be loaded as soon as possible in the HEAD tag:

<head>
    <script src="node_modules/toast-loader/dist/toast.min.js"></script>
</head>

The API

toast.css(url: string): Promise
toast.js(url: string): Promise
toast.all(urls: string[]): Promise

Examples

if (dark_mode === true) {
    toast.css('styles/dark.css')
} else {
    toast.css('styles/light.css')
}

toast.js('http://some.cdn.com/jquery.js').then(() => {
    toast.js('http://some.cdn.com/jquery-myplugin.js').then(() => {
        $('.someClass').myPlugin()
    })
})

toast.all([
    'assets/css/styles1.css',
    'assets/css/styles2.css',
    'assets/js/script1.js',
    'assets/js/script2.js',
    'assets/js/script3.js',
]).then(() => {
    console.log('Everything has been loaded, yay!')
})

Browser compatibility

Toast is using built-in promises. If you need to support IE9-11, you must add the promise-polyfill library before loading Toast. Here's the compatibility table for the Promise feature.

IE9-IE11 and Edge never trigger error event on CSS loading if something went wrong. Keep this in mind when you're using catch promise block with Toast.

If you want to look at some feature supporting details, you can take a look at this compatibility table.

It worth noting that Toast has been designed to be compatible with modern browsers and IE9+. Supporting other older browsers would have a negative impact on the library size.

Development

Install the dependencies with:

yarn install

Build the lib with:

yarn build

Testing

Tests are written with Mocha and Chai and run with Karma on LambdaTest.

First, you will need to set up you're own environment:

create your account on LambdaTest
download the tunnel software, it will act as a gateway between Karma and LambdaTest
verify that the LT command is accessible (e.g. in the PATH)
get your credentials from the Automation page, they are located under the key icon
set them in your environment, per example in your .bashrc:

export LT_USERNAME="<your_username>"
export LT_ACCESS_KEY="<your_access_key>"

Finally, you can run the tests with:

yarn test

They will be run under the following browsers:

Chrome 73
Firefox 66
Edge 18
IE 9-11
Safari 12

If needed, you can run the tests under only one browser with:

yarn chrome
yarn firefox
yarn edge
yarn ie11
yarn ie10
yarn ie9
yarn safari

License

Licensed under the MIT license.

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Package last updated on 23 Jul 2019

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