lepu-test-platform-web/node_modules/postcss/lib/postcss.js

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'use strict';
exports.__esModule = true;
var _declaration = require('./declaration');
var _declaration2 = _interopRequireDefault(_declaration);
var _processor = require('./processor');
var _processor2 = _interopRequireDefault(_processor);
var _stringify = require('./stringify');
var _stringify2 = _interopRequireDefault(_stringify);
var _comment = require('./comment');
var _comment2 = _interopRequireDefault(_comment);
var _atRule = require('./at-rule');
var _atRule2 = _interopRequireDefault(_atRule);
var _vendor = require('./vendor');
var _vendor2 = _interopRequireDefault(_vendor);
var _parse = require('./parse');
var _parse2 = _interopRequireDefault(_parse);
var _list = require('./list');
var _list2 = _interopRequireDefault(_list);
var _rule = require('./rule');
var _rule2 = _interopRequireDefault(_rule);
var _root = require('./root');
var _root2 = _interopRequireDefault(_root);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Create a new {@link Processor} instance that will apply `plugins`
* as CSS processors.
*
* @param {Array.<Plugin|pluginFunction>|Processor} plugins - PostCSS
* plugins. See {@link Processor#use} for plugin format.
*
* @return {Processor} Processor to process multiple CSS
*
* @example
* import postcss from 'postcss';
*
* postcss(plugins).process(css, { from, to }).then(result => {
* console.log(result.css);
* });
*
* @namespace postcss
*/
function postcss() {
for (var _len = arguments.length, plugins = Array(_len), _key = 0; _key < _len; _key++) {
plugins[_key] = arguments[_key];
}
if (plugins.length === 1 && Array.isArray(plugins[0])) {
plugins = plugins[0];
}
return new _processor2.default(plugins);
}
/**
* Creates a PostCSS plugin with a standard API.
*
* The newly-wrapped function will provide both the name and PostCSS
* version of the plugin.
*
* ```js
* const processor = postcss([replace]);
* processor.plugins[0].postcssPlugin //=> 'postcss-replace'
* processor.plugins[0].postcssVersion //=> '5.1.0'
* ```
*
* The plugin function receives 2 arguments: {@link Root}
* and {@link Result} instance. The function should mutate the provided
* `Root` node. Alternatively, you can create a new `Root` node
* and override the `result.root` property.
*
* ```js
* const cleaner = postcss.plugin('postcss-cleaner', () => {
* return (root, result) => {
* result.root = postcss.root();
* };
* });
* ```
*
* As a convenience, plugins also expose a `process` method so that you can use
* them as standalone tools.
*
* ```js
* cleaner.process(css, processOpts, pluginOpts);
* // This is equivalent to:
* postcss([ cleaner(pluginOpts) ]).process(css, processOpts);
* ```
*
* Asynchronous plugins should return a `Promise` instance.
*
* ```js
* postcss.plugin('postcss-import', () => {
* return (root, result) => {
* return new Promise( (resolve, reject) => {
* fs.readFile('base.css', (base) => {
* root.prepend(base);
* resolve();
* });
* });
* };
* });
* ```
*
* Add warnings using the {@link Node#warn} method.
* Send data to other plugins using the {@link Result#messages} array.
*
* ```js
* postcss.plugin('postcss-caniuse-test', () => {
* return (root, result) => {
* root.walkDecls(decl => {
* if ( !caniuse.support(decl.prop) ) {
* decl.warn(result, 'Some browsers do not support ' + decl.prop);
* }
* });
* };
* });
* ```
*
* @param {string} name - PostCSS plugin name. Same as in `name`
* property in `package.json`. It will be saved
* in `plugin.postcssPlugin` property.
* @param {function} initializer - will receive plugin options
* and should return {@link pluginFunction}
*
* @return {Plugin} PostCSS plugin
*/
postcss.plugin = function plugin(name, initializer) {
var creator = function creator() {
var transformer = initializer.apply(undefined, arguments);
transformer.postcssPlugin = name;
transformer.postcssVersion = new _processor2.default().version;
return transformer;
};
var cache = void 0;
Object.defineProperty(creator, 'postcss', {
get: function get() {
if (!cache) cache = creator();
return cache;
}
});
creator.process = function (css, processOpts, pluginOpts) {
return postcss([creator(pluginOpts)]).process(css, processOpts);
};
return creator;
};
/**
* Default function to convert a node tree into a CSS string.
*
* @param {Node} node - start node for stringifing. Usually {@link Root}.
* @param {builder} builder - function to concatenate CSS from nodes parts
* or generate string and source map
*
* @return {void}
*
* @function
*/
postcss.stringify = _stringify2.default;
/**
* Parses source css and returns a new {@link Root} node,
* which contains the source CSS nodes.
*
* @param {string|toString} css - string with input CSS or any object
* with toString() method, like a Buffer
* @param {processOptions} [opts] - options with only `from` and `map` keys
*
* @return {Root} PostCSS AST
*
* @example
* // Simple CSS concatenation with source map support
* const root1 = postcss.parse(css1, { from: file1 });
* const root2 = postcss.parse(css2, { from: file2 });
* root1.append(root2).toResult().css;
*
* @function
*/
postcss.parse = _parse2.default;
/**
* @member {vendor} - Contains the {@link vendor} module.
*
* @example
* postcss.vendor.unprefixed('-moz-tab') //=> ['tab']
*/
postcss.vendor = _vendor2.default;
/**
* @member {list} - Contains the {@link list} module.
*
* @example
* postcss.list.space('5px calc(10% + 5px)') //=> ['5px', 'calc(10% + 5px)']
*/
postcss.list = _list2.default;
/**
* Creates a new {@link Comment} node.
*
* @param {object} [defaults] - properties for the new node.
*
* @return {Comment} new Comment node
*
* @example
* postcss.comment({ text: 'test' })
*/
postcss.comment = function (defaults) {
return new _comment2.default(defaults);
};
/**
* Creates a new {@link AtRule} node.
*
* @param {object} [defaults] - properties for the new node.
*
* @return {AtRule} new AtRule node
*
* @example
* postcss.atRule({ name: 'charset' }).toString() //=> "@charset"
*/
postcss.atRule = function (defaults) {
return new _atRule2.default(defaults);
};
/**
* Creates a new {@link Declaration} node.
*
* @param {object} [defaults] - properties for the new node.
*
* @return {Declaration} new Declaration node
*
* @example
* postcss.decl({ prop: 'color', value: 'red' }).toString() //=> "color: red"
*/
postcss.decl = function (defaults) {
return new _declaration2.default(defaults);
};
/**
* Creates a new {@link Rule} node.
*
* @param {object} [defaults] - properties for the new node.
*
* @return {Rule} new Rule node
*
* @example
* postcss.rule({ selector: 'a' }).toString() //=> "a {\n}"
*/
postcss.rule = function (defaults) {
return new _rule2.default(defaults);
};
/**
* Creates a new {@link Root} node.
*
* @param {object} [defaults] - properties for the new node.
*
* @return {Root} new Root node
*
* @example
* postcss.root({ after: '\n' }).toString() //=> "\n"
*/
postcss.root = function (defaults) {
return new _root2.default(defaults);
};
exports.default = postcss;
module.exports = exports['default'];
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