at-rule.js
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'use strict';
exports.__esModule = true;
var _container = require('./container');
var _container2 = _interopRequireDefault(_container);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
/**
* Represents an at-rule.
*
* If it’s followed in the CSS by a {} block, this node will have
* a nodes property representing its children.
*
* @extends Container
*
* @example
* const root = postcss.parse('@charset "UTF-8"; @media print {}');
*
* const charset = root.first;
* charset.type //=> 'atrule'
* charset.nodes //=> undefined
*
* const media = root.last;
* media.nodes //=> []
*/
var AtRule = function (_Container) {
_inherits(AtRule, _Container);
function AtRule(defaults) {
_classCallCheck(this, AtRule);
var _this = _possibleConstructorReturn(this, _Container.call(this, defaults));
_this.type = 'atrule';
return _this;
}
AtRule.prototype.append = function append() {
var _Container$prototype$;
if (!this.nodes) this.nodes = [];
for (var _len = arguments.length, children = Array(_len), _key = 0; _key < _len; _key++) {
children[_key] = arguments[_key];
}
return (_Container$prototype$ = _Container.prototype.append).call.apply(_Container$prototype$, [this].concat(children));
};
AtRule.prototype.prepend = function prepend() {
var _Container$prototype$2;
if (!this.nodes) this.nodes = [];
for (var _len2 = arguments.length, children = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
children[_key2] = arguments[_key2];
}
return (_Container$prototype$2 = _Container.prototype.prepend).call.apply(_Container$prototype$2, [this].concat(children));
};
/**
* @memberof AtRule#
* @member {string} name - the at-rule’s name immediately follows the `@`
*
* @example
* const root = postcss.parse('@media print {}');
* media.name //=> 'media'
* const media = root.first;
*/
/**
* @memberof AtRule#
* @member {string} params - the at-rule’s parameters, the values
* that follow the at-rule’s name but precede
* any {} block
*
* @example
* const root = postcss.parse('@media print, screen {}');
* const media = root.first;
* media.params //=> 'print, screen'
*/
/**
* @memberof AtRule#
* @member {object} raws - Information to generate byte-to-byte equal
* node string as it was in the origin input.
*
* Every parser saves its own properties,
* but the default CSS parser uses:
*
* * `before`: the space symbols before the node. It also stores `*`
* and `_` symbols before the declaration (IE hack).
* * `after`: the space symbols after the last child of the node
* to the end of the node.
* * `between`: the symbols between the property and value
* for declarations, selector and `{` for rules, or last parameter
* and `{` for at-rules.
* * `semicolon`: contains true if the last child has
* an (optional) semicolon.
* * `afterName`: the space between the at-rule name and its parameters.
*
* PostCSS cleans at-rule parameters from comments and extra spaces,
* but it stores origin content in raws properties.
* As such, if you don’t change a declaration’s value,
* PostCSS will use the raw value with comments.
*
* @example
* const root = postcss.parse(' @media\nprint {\n}')
* root.first.first.raws //=> { before: ' ',
* // between: ' ',
* // afterName: '\n',
* // after: '\n' }
*/
return AtRule;
}(_container2.default);
exports.default = AtRule;
module.exports = exports['default'];
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