notes/node_modules/postcss/lib/root.js

'use strict';

exports.__esModule = true;

var _container = require('./container');

var _container2 = _interopRequireDefault(_container);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

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 a CSS file and contains all its parsed nodes.
 *
 * @extends Container
 *
 * @example
 * const root = postcss.parse('a{color:black} b{z-index:2}');
 * root.type         //=> 'root'
 * root.nodes.length //=> 2
 */
var Root = function (_Container) {
    _inherits(Root, _Container);

    function Root(defaults) {
        _classCallCheck(this, Root);

        var _this = _possibleConstructorReturn(this, _Container.call(this, defaults));

        _this.type = 'root';
        if (!_this.nodes) _this.nodes = [];
        return _this;
    }

    Root.prototype.removeChild = function removeChild(child) {
        child = this.index(child);

        if (child === 0 && this.nodes.length > 1) {
            this.nodes[1].raws.before = this.nodes[child].raws.before;
        }

        return _Container.prototype.removeChild.call(this, child);
    };

    Root.prototype.normalize = function normalize(child, sample, type) {
        var nodes = _Container.prototype.normalize.call(this, child);

        if (sample) {
            if (type === 'prepend') {
                if (this.nodes.length > 1) {
                    sample.raws.before = this.nodes[1].raws.before;
                } else {
                    delete sample.raws.before;
                }
            } else if (this.first !== sample) {
                for (var _iterator = nodes, _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 node = _ref;

                    node.raws.before = sample.raws.before;
                }
            }
        }

        return nodes;
    };

    /**
     * Returns a {@link Result} instance representing the root’s CSS.
     *
     * @param {processOptions} [opts] - options with only `to` and `map` keys
     *
     * @return {Result} result with current root’s CSS
     *
     * @example
     * const root1 = postcss.parse(css1, { from: 'a.css' });
     * const root2 = postcss.parse(css2, { from: 'b.css' });
     * root1.append(root2);
     * const result = root1.toResult({ to: 'all.css', map: true });
     */


    Root.prototype.toResult = function toResult() {
        var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

        var LazyResult = require('./lazy-result');
        var Processor = require('./processor');

        var lazy = new LazyResult(new Processor(), this, opts);
        return lazy.stringify();
    };

    Root.prototype.remove = function remove(child) {
        (0, _warnOnce2.default)('Root#remove is deprecated. Use Root#removeChild');
        this.removeChild(child);
    };

    Root.prototype.prevMap = function prevMap() {
        (0, _warnOnce2.default)('Root#prevMap is deprecated. Use Root#source.input.map');
        return this.source.input.map;
    };

    /**
     * @memberof Root#
     * @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:
     *
     * * `after`: the space symbols after the last child to the end of file.
     * * `semicolon`: is the last child has an (optional) semicolon.
     *
     * @example
     * postcss.parse('a {}\n').raws //=> { after: '\n' }
     * postcss.parse('a {}').raws   //=> { after: '' }
     */

    return Root;
}(_container2.default);

exports.default = Root;
module.exports = exports['default'];
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