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node_modules/postcss/docs/guidelines/plugin.md

@@ -22,34 +22,34 @@ The prefix `postcss-` shows that the plugin is part of the PostCSS ecosystem.
 
 This rule is not mandatory for plugins that can run as independent tools,
 without the user necessarily knowing that it is powered by
-PostCSS — for example, [cssnext] and [Autoprefixer].
+PostCSS — for example, [RTLCSS] and [Autoprefixer].
 
 [Autoprefixer]: https://github.com/postcss/autoprefixer
-[cssnext]:      http://cssnext.io/
+[RTLCSS]:       https://rtlcss.com/
 
 ### 1.2. Do one thing, and do it well
 
 Do not create multitool plugins. Several small, one-purpose plugins bundled into
 a plugin pack is usually a better solution.
 
-For example, [cssnext] contains many small plugins,
-one for each W3C specification. And [cssnano] contains a separate plugin
+For example, [`postcss-preset-env`] contains many small plugins,
+one for each W3C specification. And [`cssnano`] contains a separate plugin
 for each of its optimization.
 
-[cssnext]: http://cssnext.io/
-[cssnano]: https://github.com/ben-eb/cssnano
+[`postcss-preset-env`]: https://preset-env.cssdb.org/
+[`cssnano`]:            https://github.com/ben-eb/cssnano
 
 ### 1.3. Do not use mixins
 
 Preprocessors libraries like Compass provide an API with mixins.
 
 PostCSS plugins are different.
-A plugin cannot be just a set of mixins for [postcss-mixins].
+A plugin cannot be just a set of mixins for [`postcss-mixins`].
 
 To achieve your goal, consider transforming valid CSS
 or using custom at-rules and custom properties.
 
-[postcss-mixins]: https://github.com/postcss/postcss-mixins
+[`postcss-mixins`]: https://github.com/postcss/postcss-mixins
 
 ### 1.4. Create plugin by `postcss.plugin`
 
@@ -57,11 +57,11 @@ By wrapping your function in this method,
 you are hooking into a common plugin API:
 
 ```js
-module.exports = postcss.plugin('plugin-name', function (opts) {
-    return function (root, result) {
-        // Plugin code
-    };
-});
+module.exports = postcss.plugin('plugin-name', opts => {
+  return (root, result) => {
+    // Plugin code
+  }
+})
 ```
 
 ## 2. Processing
@@ -78,19 +78,19 @@ different environments. You should test in (at least) Node.js [active LTS](https
 For example, use `fs.writeFile` instead of `fs.writeFileSync`:
 
 ```js
-postcss.plugin('plugin-sprite', function (opts) {
-    return function (root, result) {
+postcss.plugin('plugin-sprite', opts => {
+  return (root, result) => {
 
-        return new Promise(function (resolve, reject) {
-            var sprite = makeSprite();
-            fs.writeFile(opts.file, function (err) {
-                if ( err ) return reject(err);
-                resolve();
-            })
-        });
+    return new Promise((resolve, reject) => {
+      const sprite = makeSprite()
+      fs.writeFile(opts.file, sprite, err => {
+        if (err) return reject(err)
+        resolve()
+      })
+    })
 
-    };
-});
+  }
+})
 ```
 
 ### 2.3. Set `node.source` for new nodes
@@ -98,22 +98,22 @@ postcss.plugin('plugin-sprite', function (opts) {
 Every node must have a relevant `source` so PostCSS can generate
 an accurate source map.
 
-So if you add new declaration based on some existing declaration, you should
+So if you add a new declaration based on some existing declaration, you should
 clone the existing declaration in order to save that original `source`.
 
 ```js
-if ( needPrefix(decl.prop) ) {
-    decl.cloneBefore({ prop: '-webkit-' + decl.prop });
+if (needPrefix(decl.prop)) {
+  decl.cloneBefore({ prop: '-webkit-' + decl.prop })
 }
 ```
 
 You can also set `source` directly, copying from some existing node:
 
 ```js
-if ( decl.prop === 'animation' ) {
-    var keyframe = createAnimationByName(decl.value);
-    keyframes.source = decl.source;
-    decl.root().append(keyframes);
+if (decl.prop === 'animation') {
+  const keyframe = createAnimationByName(decl.value)
+  keyframes.source = decl.source
+  decl.root().append(keyframes)
 }
 ```
 
@@ -134,8 +134,8 @@ in a mixin plugin) you should use `node.error` to create an error
 that includes source position:
 
 ```js
-if ( typeof mixins[name] === 'undefined' ) {
-    throw decl.error('Unknown mixin ' + name, { plugin: 'postcss-mixins' });
+if (typeof mixins[name] === 'undefined') {
+  throw decl.error('Unknown mixin ' + name, { plugin: 'postcss-mixins' })
 }
 ```
 
@@ -145,8 +145,8 @@ Do not print warnings with `console.log` or `console.warn`,
 because some PostCSS runner may not allow console output.
 
 ```js
-if ( outdated(decl.prop) ) {
-    result.warn(decl.prop + ' is outdated', { node: decl });
+if (outdated(decl.prop)) {
+  result.warn(decl.prop + ' is outdated', { node: decl })
 }
 ```
 
@@ -156,7 +156,7 @@ If CSS input is a source of the warning, the plugin must set the `node` option.
 
 ### 4.1. Document your plugin in English
 
-PostCSS plugins must have their `README.md` written in English. Do not be afraid
+PostCSS plugins must have their `README.md` wrote in English. Do not be afraid
 of your English skills, as the open source community will fix your errors.
 
 Of course, you are welcome to write documentation in other languages;