blob: f82c0f042b92599d69b5241b0bc0a8141288e158 [file] [log] [blame]
"use strict";
exports.__esModule = true;
exports.default = void 0;
var _lazyResult = _interopRequireDefault(require("./lazy-result"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Contains plugins to process CSS. Create one `Processor` instance,
* initialize its plugins, and then use that instance on numerous CSS files.
*
* @example
* const processor = postcss([autoprefixer, precss])
* processor.process(css1).then(result => console.log(result.css))
* processor.process(css2).then(result => console.log(result.css))
*/
var Processor =
/*#__PURE__*/
function () {
/**
* @param {Array.<Plugin|pluginFunction>|Processor} plugins PostCSS plugins.
* See {@link Processor#use} for plugin format.
*/
function Processor(plugins) {
if (plugins === void 0) {
plugins = [];
}
/**
* Current PostCSS version.
*
* @type {string}
*
* @example
* if (result.processor.version.split('.')[0] !== '6') {
* throw new Error('This plugin works only with PostCSS 6')
* }
*/
this.version = '7.0.17';
/**
* Plugins added to this processor.
*
* @type {pluginFunction[]}
*
* @example
* const processor = postcss([autoprefixer, precss])
* processor.plugins.length //=> 2
*/
this.plugins = this.normalize(plugins);
}
/**
* Adds a plugin to be used as a CSS processor.
*
* PostCSS plugin can be in 4 formats:
* * A plugin created by {@link postcss.plugin} method.
* * A function. PostCSS will pass the function a @{link Root}
* as the first argument and current {@link Result} instance
* as the second.
* * An object with a `postcss` method. PostCSS will use that method
* as described in #2.
* * Another {@link Processor} instance. PostCSS will copy plugins
* from that instance into this one.
*
* Plugins can also be added by passing them as arguments when creating
* a `postcss` instance (see [`postcss(plugins)`]).
*
* Asynchronous plugins should return a `Promise` instance.
*
* @param {Plugin|pluginFunction|Processor} plugin PostCSS plugin
* or {@link Processor}
* with plugins.
*
* @example
* const processor = postcss()
* .use(autoprefixer)
* .use(precss)
*
* @return {Processes} Current processor to make methods chain.
*/
var _proto = Processor.prototype;
_proto.use = function use(plugin) {
this.plugins = this.plugins.concat(this.normalize([plugin]));
return this;
}
/**
* Parses source CSS and returns a {@link LazyResult} Promise proxy.
* Because some plugins can be asynchronous it doesn’t make
* any transformations. Transformations will be applied
* in the {@link LazyResult} methods.
*
* @param {string|toString|Result} css String with input CSS or any object
* with a `toString()` method,
* like a Buffer. Optionally, send
* a {@link Result} instance
* and the processor will take
* the {@link Root} from it.
* @param {processOptions} [opts] Options.
*
* @return {LazyResult} Promise proxy.
*
* @example
* processor.process(css, { from: 'a.css', to: 'a.out.css' })
* .then(result => {
* console.log(result.css)
* })
*/
;
_proto.process = function (_process) {
function process(_x) {
return _process.apply(this, arguments);
}
process.toString = function () {
return _process.toString();
};
return process;
}(function (css, opts) {
if (opts === void 0) {
opts = {};
}
if (this.plugins.length === 0 && opts.parser === opts.stringifier) {
if (process.env.NODE_ENV !== 'production') {
if (typeof console !== 'undefined' && console.warn) {
console.warn('You did not set any plugins, parser, or stringifier. ' + 'Right now, PostCSS does nothing. Pick plugins for your case ' + 'on https://www.postcss.parts/ and use them in postcss.config.js.');
}
}
}
return new _lazyResult.default(this, css, opts);
});
_proto.normalize = function normalize(plugins) {
var normalized = [];
for (var _iterator = plugins, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
var _ref;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref = _i.value;
}
var i = _ref;
if (i.postcss) i = i.postcss;
if (typeof i === 'object' && Array.isArray(i.plugins)) {
normalized = normalized.concat(i.plugins);
} else if (typeof i === 'function') {
normalized.push(i);
} else if (typeof i === 'object' && (i.parse || i.stringify)) {
if (process.env.NODE_ENV !== 'production') {
throw new Error('PostCSS syntaxes cannot be used as plugins. Instead, please use ' + 'one of the syntax/parser/stringifier options as outlined ' + 'in your PostCSS runner documentation.');
}
} else {
throw new Error(i + ' is not a PostCSS plugin');
}
}
return normalized;
};
return Processor;
}();
var _default = Processor;
/**
* @callback builder
* @param {string} part Part of generated CSS connected to this node.
* @param {Node} node AST node.
* @param {"start"|"end"} [type] Node’s part type.
*/
/**
* @callback parser
*
* @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
*/
/**
* @callback stringifier
*
* @param {Node} node Start node for stringifing. Usually {@link Root}.
* @param {builder} builder Function to concatenate CSS from node’s parts
* or generate string and source map.
*
* @return {void}
*/
/**
* @typedef {object} syntax
* @property {parser} parse Function to generate AST by string.
* @property {stringifier} stringify Function to generate string by AST.
*/
/**
* @typedef {object} toString
* @property {function} toString
*/
/**
* @callback pluginFunction
* @param {Root} root Parsed input CSS.
* @param {Result} result Result to set warnings or check other plugins.
*/
/**
* @typedef {object} Plugin
* @property {function} postcss PostCSS plugin function.
*/
/**
* @typedef {object} processOptions
* @property {string} from The path of the CSS source file.
* You should always set `from`,
* because it is used in source map
* generation and syntax error messages.
* @property {string} to The path where you’ll put the output
* CSS file. You should always set `to`
* to generate correct source maps.
* @property {parser} parser Function to generate AST by string.
* @property {stringifier} stringifier Class to generate string by AST.
* @property {syntax} syntax Object with `parse` and `stringify`.
* @property {object} map Source map options.
* @property {boolean} map.inline Does source map should
* be embedded in the output
* CSS as a base64-encoded
* comment.
* @property {string|object|false|function} map.prev Source map content
* from a previous
* processing step
* (for example, Sass).
* PostCSS will try to find
* previous map automatically,
* so you could disable it by
* `false` value.
* @property {boolean} map.sourcesContent Does PostCSS should set
* the origin content to map.
* @property {string|false} map.annotation Does PostCSS should set
* annotation comment to map.
* @property {string} map.from Override `from` in map’s
* sources`.
*/
exports.default = _default;
module.exports = exports.default;
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Create one `Processor` instance,\n * initialize its plugins, and then use that instance on numerous CSS files.\n *\n * @example\n * const processor = postcss([autoprefixer, precss])\n * processor.process(css1).then(result => console.log(result.css))\n * processor.process(css2).then(result => console.log(result.css))\n */\nclass Processor {\n  /**\n   * @param {Array.<Plugin|pluginFunction>|Processor} plugins PostCSS plugins.\n   *        See {@link Processor#use} for plugin format.\n   */\n  constructor (plugins = []) {\n    /**\n     * Current PostCSS version.\n     *\n     * @type {string}\n     *\n     * @example\n     * if (result.processor.version.split('.')[0] !== '6') {\n     *   throw new Error('This plugin works only with PostCSS 6')\n     * }\n     */\n    this.version = '7.0.17'\n    /**\n     * Plugins added to this processor.\n     *\n     * @type {pluginFunction[]}\n     *\n     * @example\n     * const processor = postcss([autoprefixer, precss])\n     * processor.plugins.length //=> 2\n     */\n    this.plugins = this.normalize(plugins)\n  }\n\n  /**\n   * Adds a plugin to be used as a CSS processor.\n   *\n   * PostCSS plugin can be in 4 formats:\n   * * A plugin created by {@link postcss.plugin} method.\n   * * A function. PostCSS will pass the function a @{link Root}\n   *   as the first argument and current {@link Result} instance\n   *   as the second.\n   * * An object with a `postcss` method. PostCSS will use that method\n   *   as described in #2.\n   * * Another {@link Processor} instance. PostCSS will copy plugins\n   *   from that instance into this one.\n   *\n   * Plugins can also be added by passing them as arguments when creating\n   * a `postcss` instance (see [`postcss(plugins)`]).\n   *\n   * Asynchronous plugins should return a `Promise` instance.\n   *\n   * @param {Plugin|pluginFunction|Processor} plugin PostCSS plugin\n   *                                                 or {@link Processor}\n   *                                                 with plugins.\n   *\n   * @example\n   * const processor = postcss()\n   *   .use(autoprefixer)\n   *   .use(precss)\n   *\n   * @return {Processes} Current processor to make methods chain.\n   */\n  use (plugin) {\n    this.plugins = this.plugins.concat(this.normalize([plugin]))\n    return this\n  }\n\n  /**\n   * Parses source CSS and returns a {@link LazyResult} Promise proxy.\n   * Because some plugins can be asynchronous it doesn’t make\n   * any transformations. Transformations will be applied\n   * in the {@link LazyResult} methods.\n   *\n   * @param {string|toString|Result} css String with input CSS or any object\n   *                                     with a `toString()` method,\n   *                                     like a Buffer. Optionally, send\n   *                                     a {@link Result} instance\n   *                                     and the processor will take\n   *                                     the {@link Root} from it.\n   * @param {processOptions} [opts]      Options.\n   *\n   * @return {LazyResult} Promise proxy.\n   *\n   * @example\n   * processor.process(css, { from: 'a.css', to: 'a.out.css' })\n   *   .then(result => {\n   *      console.log(result.css)\n   *   })\n   */\n  process (css, opts = { }) {\n    if (this.plugins.length === 0 && opts.parser === opts.stringifier) {\n      if (process.env.NODE_ENV !== 'production') {\n        if (typeof console !== 'undefined' && console.warn) {\n          console.warn(\n            'You did not set any plugins, parser, or stringifier. ' +\n            'Right now, PostCSS does nothing. Pick plugins for your case ' +\n            'on https://www.postcss.parts/ and use them in postcss.config.js.'\n          )\n        }\n      }\n    }\n    return new LazyResult(this, css, opts)\n  }\n\n  normalize (plugins) {\n    let normalized = []\n    for (let i of plugins) {\n      if (i.postcss) i = i.postcss\n\n      if (typeof i === 'object' && Array.isArray(i.plugins)) {\n        normalized = normalized.concat(i.plugins)\n      } else if (typeof i === 'function') {\n        normalized.push(i)\n      } else if (typeof i === 'object' && (i.parse || i.stringify)) {\n        if (process.env.NODE_ENV !== 'production') {\n          throw new Error(\n            'PostCSS syntaxes cannot be used as plugins. Instead, please use ' +\n            'one of the syntax/parser/stringifier options as outlined ' +\n            'in your PostCSS runner documentation.'\n          )\n        }\n      } else {\n        throw new Error(i + ' is not a PostCSS plugin')\n      }\n    }\n    return normalized\n  }\n}\n\nexport default Processor\n\n/**\n * @callback builder\n * @param {string} part          Part of generated CSS connected to this node.\n * @param {Node}   node          AST node.\n * @param {\"start\"|\"end\"} [type] Node’s part type.\n */\n\n/**\n * @callback parser\n *\n * @param {string|toString} css   String with input CSS or any object\n *                                with toString() method, like a Buffer.\n * @param {processOptions} [opts] Options with only `from` and `map` keys.\n *\n * @return {Root} PostCSS AST\n */\n\n/**\n * @callback stringifier\n *\n * @param {Node} node       Start node for stringifing. Usually {@link Root}.\n * @param {builder} builder Function to concatenate CSS from node’s parts\n *                          or generate string and source map.\n *\n * @return {void}\n */\n\n/**\n * @typedef {object} syntax\n * @property {parser} parse          Function to generate AST by string.\n * @property {stringifier} stringify Function to generate string by AST.\n */\n\n/**\n * @typedef {object} toString\n * @property {function} toString\n */\n\n/**\n * @callback pluginFunction\n * @param {Root} root     Parsed input CSS.\n * @param {Result} result Result to set warnings or check other plugins.\n */\n\n/**\n * @typedef {object} Plugin\n * @property {function} postcss PostCSS plugin function.\n */\n\n/**\n * @typedef {object} processOptions\n * @property {string} from             The path of the CSS source file.\n *                                     You should always set `from`,\n *                                     because it is used in source map\n *                                     generation and syntax error messages.\n * @property {string} to               The path where you’ll put the output\n *                                     CSS file. You should always set `to`\n *                                     to generate correct source maps.\n * @property {parser} parser           Function to generate AST by string.\n * @property {stringifier} stringifier Class to generate string by AST.\n * @property {syntax} syntax           Object with `parse` and `stringify`.\n * @property {object} map              Source map options.\n * @property {boolean} map.inline                    Does source map should\n *                                                   be embedded in the output\n *                                                   CSS as a base64-encoded\n *                                                   comment.\n * @property {string|object|false|function} map.prev Source map content\n *                                                   from a previous\n *                                                   processing step\n *                                                   (for example, Sass).\n *                                                   PostCSS will try to find\n *                                                   previous map automatically,\n *                                                   so you could disable it by\n *                                                   `false` value.\n * @property {boolean} map.sourcesContent            Does PostCSS should set\n *                                                   the origin content to map.\n * @property {string|false} map.annotation           Does PostCSS should set\n *                                                   annotation comment to map.\n * @property {string} map.from                       Override `from` in map’s\n *                                                   sources`.\n */\n"],"file":"processor.js"}