fast-css-loader

Blazingly fast css loader for webpack (about 10 times faster than css-loader when process large css files)

install

``bash
npm install fast-css-loader --save-dev
`

VS css-loader

fast-css-loader has higher performance when processing large css files, here is an example
when process a 24200+ lines css file:

`text
-------------------------------------
CSS_LOADER COST: 1644 ms
FAST_CSS_LOADER COST: 116 ms
-------------------------------------
`

!image

$3

fast-css-loader rewrites resolving parts of @import and url(...) with RegExp
and some tricks, it's extramely faster than postcss used by css-loader.

$3

Compare with css-loader, fast-css-loader has these limitations:

- doesn't support sourceMap
- doesn't support minimize (you can minimize css with mini-css-extract-plugin)
- doesn't support camelCase option
- doesn't support css module

If you really need these features, just use original css-loader :)

Usage

just like css-loader:

`js
module.exports = {
module: {
rules: [
{
test: /\.(svg|bmp|gif|png|jpe?g)$/,
loader: require.resolve('file-loader'),
options: {
name: '[name].[hash:8].[ext]'
}
},
{
test: /\.css$/,
use: [
'style-loader',
'fast-css-loader' // replace you css-loader with fast-css-loader
]
},
]
}
}
`

Options

|Name|Type|Default|Description|
|:--:|:--:|:-----:|:----------|
|root|{String}|/|Path to resolve URLs, URLs starting with / will not be translated|
|url|{Boolean}|true| Enable/Disable url() handling|
|alias|{Object}|{}|Create aliases to import certain modules more easily|
|import |{Boolean}|true| Enable/Disable @import handling|
|importLoaders|{Number}|0`|Number of loaders applied before CSS loader|

The above listed options are consistent with css-loader, for more detail please refer to css-loader options

License

MIT