mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-28 19:35:15 +00:00
441 lines
10 KiB
Markdown
441 lines
10 KiB
Markdown
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<div align="center">
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<a href="https://github.com/webpack/webpack">
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<img width="200" height="200" src="https://webpack.js.org/assets/icon-square-big.svg">
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</a>
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</div>
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[![npm][npm]][npm-url]
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[![node][node]][node-url]
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[![deps][deps]][deps-url]
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[![tests][tests]][tests-url]
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[![chat][chat]][chat-url]
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[![size][size]][size-url]
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# url-loader
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A loader for webpack which transforms files into base64 URIs.
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## Getting Started
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To begin, you'll need to install `url-loader`:
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```console
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$ npm install url-loader --save-dev
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```
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`url-loader` works like
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[`file-loader`](https://github.com/webpack-contrib/file-loader), but can return
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a DataURL if the file is smaller than a byte limit.
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**index.js**
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```js
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import img from './image.png';
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```
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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limit: 8192,
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},
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},
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],
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},
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],
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},
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};
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```
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And run `webpack` via your preferred method.
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## Options
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| Name | Type | Default | Description |
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| :---------------------------: | :-------------------------: | :-----------------------------------------------------------: | :---------------------------------------------------------------------------------- |
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| **[`limit`](#limit)** | `{Boolean\|Number\|String}` | `true` | Specifying the maximum size of a file in bytes. |
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| **[`mimetype`](#mimetype)** | `{Boolean\|String}` | based from [mime-types](https://github.com/jshttp/mime-types) | Sets the MIME type for the file to be transformed. |
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| **[`encoding`](#encoding)** | `{Boolean\|String}` | `base64` | Specify the encoding which the file will be inlined with. |
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| **[`generator`](#generator)** | `{Function}` | `() => type/subtype;encoding,base64_data` | You can create you own custom implementation for encoding data. |
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| **[`fallback`](#fallback)** | `{String}` | `file-loader` | Specifies an alternative loader to use when a target file's size exceeds the limit. |
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| **[`esModule`](#esmodule)** | `{Boolean}` | `true` | Use ES modules syntax. |
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### `limit`
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Type: `Boolean|Number|String`
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Default: `undefined`
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The limit can be specified via loader options and defaults to no limit.
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#### `Boolean`
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Enable or disable transform files into base64.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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limit: false,
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},
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},
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],
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},
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],
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},
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};
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```
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#### `Number|String`
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A `Number` or `String` specifying the maximum size of a file in bytes.
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If the file size is **equal** or **greater** than the limit [`file-loader`](https://github.com/webpack-contrib/file-loader) will be used (by default) and all query parameters are passed to it.
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Using an alternative to `file-loader` is enabled via the `fallback` option.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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limit: 8192,
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},
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},
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],
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},
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],
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},
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};
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```
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### `mimetype`
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Type: `Boolean|String`
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Default: based from [mime-types](https://github.com/jshttp/mime-types)
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Specify the `mimetype` which the file will be inlined with.
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If unspecified the `mimetype` value will be used from [mime-types](https://github.com/jshttp/mime-types).
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#### `Boolean`
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The `true` value allows to generation the `mimetype` part from [mime-types](https://github.com/jshttp/mime-types).
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The `false` value removes the `mediatype` part from a Data URL (if omitted, defaults to `text/plain;charset=US-ASCII`).
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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mimetype: false,
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},
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},
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],
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},
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],
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},
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};
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```
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#### `String`
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Sets the MIME type for the file to be transformed.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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mimetype: 'image/png',
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},
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},
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],
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},
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],
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},
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};
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```
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### `encoding`
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Type: `Boolean|String`
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Default: `base64`
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Specify the `encoding` which the file will be inlined with.
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If unspecified the `encoding` will be `base64`.
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#### `Boolean`
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If you don't want to use any encoding you can set `encoding` to `false` however if you set it to `true` it will use the default encoding `base64`.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.svg$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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encoding: false,
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},
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},
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],
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},
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],
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},
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};
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```
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#### `String`
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It supports [Node.js Buffers and Character Encodings](https://nodejs.org/api/buffer.html#buffer_buffers_and_character_encodings) which are `["utf8","utf16le","latin1","base64","hex","ascii","binary","ucs2"]`.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.svg$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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encoding: 'utf8',
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},
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},
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],
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},
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],
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},
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};
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```
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### `generator`
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Type: `Function`
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Default: `(mimetype, encoding, content, resourcePath) => mimetype;encoding,base64_content`
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You can create you own custom implementation for encoding data.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|html)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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// The `mimetype` and `encoding` arguments will be obtained from your options
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// The `resourcePath` argument is path to file.
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generator: (content, mimetype, encoding, resourcePath) => {
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if (/\.html$/i.test(resourcePath)) {
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return `data:${mimetype},${content.toString()}`;
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}
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return `data:${mimetype}${
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encoding ? `;${encoding}` : ''
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},${content.toString(encoding)}`;
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},
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},
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},
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],
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},
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],
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},
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};
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```
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### `fallback`
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Type: `String`
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Default: `'file-loader'`
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Specifies an alternative loader to use when a target file's size exceeds the limit set in the `limit` option.
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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fallback: require.resolve('responsive-loader'),
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},
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},
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],
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},
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],
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},
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};
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```
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The fallback loader will receive the same configuration options as url-loader.
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For example, to set the quality option of a responsive-loader above use:
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.(png|jpg|gif)$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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fallback: require.resolve('responsive-loader'),
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quality: 85,
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},
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},
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],
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},
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],
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},
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};
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```
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### `esModule`
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Type: `Boolean`
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Default: `true`
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By default, `file-loader` generates JS modules that use the ES modules syntax.
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There are some cases in which using ES modules is beneficial, like in the case of [module concatenation](https://webpack.js.org/plugins/module-concatenation-plugin/) and [tree shaking](https://webpack.js.org/guides/tree-shaking/).
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You can enable a CommonJS module syntax using:
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**webpack.config.js**
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```js
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module.exports = {
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module: {
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rules: [
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{
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test: /\.css$/,
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use: [
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{
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loader: 'url-loader',
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options: {
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esModule: false,
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},
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},
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],
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},
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],
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},
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};
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```
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## Examples
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### SVG
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SVG can be compressed into a more compact output, avoiding `base64`.
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You can read about it more [here](https://css-tricks.com/probably-dont-base64-svg/).
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You can do it using [mini-svg-data-uri](https://github.com/tigt/mini-svg-data-uri) package.
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**webpack.config.js**
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```js
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const svgToMiniDataURI = require('mini-svg-data-uri');
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module.exports = {
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module: {
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rules: [
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{
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test: /\.svg$/i,
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use: [
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{
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loader: 'url-loader',
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options: {
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generator: (content) => svgToMiniDataURI(content.toString()),
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},
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},
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],
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},
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],
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},
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};
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```
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## Contributing
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||
|
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Please take a moment to read our contributing guidelines if you haven't yet done so.
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[CONTRIBUTING](./.github/CONTRIBUTING.md)
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## License
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||
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[MIT](./LICENSE)
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[npm]: https://img.shields.io/npm/v/url-loader.svg
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[npm-url]: https://npmjs.com/package/url-loader
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[node]: https://img.shields.io/node/v/url-loader.svg
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[node-url]: https://nodejs.org
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[deps]: https://david-dm.org/webpack-contrib/url-loader.svg
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[deps-url]: https://david-dm.org/webpack-contrib/url-loader
|
||
|
|
[tests]: https://github.com/webpack-contrib/url-loader/workflows/url-loader/badge.svg
|
||
|
|
[tests-url]: https://github.com/webpack-contrib/url-loader/actions
|
||
|
|
[cover]: https://codecov.io/gh/webpack-contrib/url-loader/branch/master/graph/badge.svg
|
||
|
|
[cover-url]: https://codecov.io/gh/webpack-contrib/url-loader
|
||
|
|
[chat]: https://img.shields.io/badge/gitter-webpack%2Fwebpack-brightgreen.svg
|
||
|
|
[chat-url]: https://gitter.im/webpack/webpack
|
||
|
|
[size]: https://packagephobia.now.sh/badge?p=url-loader
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||
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[size-url]: https://packagephobia.now.sh/result?p=url-loader
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
```
|