forked from zhurui/management
261 lines
7.6 KiB
JavaScript
261 lines
7.6 KiB
JavaScript
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'use strict';
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function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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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; }
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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) : _defaults(subClass, superClass); }
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var Prefixer = require('./prefixer');
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var Browsers = require('./browsers');
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var utils = require('./utils');
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var Declaration = function (_Prefixer) {
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_inherits(Declaration, _Prefixer);
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function Declaration() {
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_classCallCheck(this, Declaration);
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return _possibleConstructorReturn(this, _Prefixer.apply(this, arguments));
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}
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/**
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* Always true, because we already get prefixer by property name
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*/
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Declaration.prototype.check = function check() /* decl */{
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return true;
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};
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/**
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* Return prefixed version of property
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*/
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Declaration.prototype.prefixed = function prefixed(prop, prefix) {
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return prefix + prop;
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};
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/**
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* Return unprefixed version of property
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*/
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Declaration.prototype.normalize = function normalize(prop) {
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return prop;
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};
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/**
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* Check `value`, that it contain other prefixes, rather than `prefix`
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*/
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Declaration.prototype.otherPrefixes = function otherPrefixes(value, prefix) {
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for (var _iterator = Browsers.prefixes(), _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
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var _ref;
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if (_isArray) {
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if (_i >= _iterator.length) break;
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_ref = _iterator[_i++];
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} else {
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_i = _iterator.next();
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if (_i.done) break;
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_ref = _i.value;
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}
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var other = _ref;
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if (other === prefix) {
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continue;
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}
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if (value.indexOf(other) !== -1) {
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return true;
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}
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}
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return false;
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};
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/**
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* Set prefix to declaration
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*/
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Declaration.prototype.set = function set(decl, prefix) {
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decl.prop = this.prefixed(decl.prop, prefix);
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return decl;
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};
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/**
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* Should we use visual cascade for prefixes
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*/
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Declaration.prototype.needCascade = function needCascade(decl) {
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if (!decl._autoprefixerCascade) {
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decl._autoprefixerCascade = this.all.options.cascade !== false && decl.raw('before').indexOf('\n') !== -1;
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}
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return decl._autoprefixerCascade;
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};
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/**
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* Return maximum length of possible prefixed property
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*/
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Declaration.prototype.maxPrefixed = function maxPrefixed(prefixes, decl) {
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if (decl._autoprefixerMax) {
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return decl._autoprefixerMax;
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}
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var max = 0;
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for (var _iterator2 = prefixes, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
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var _ref2;
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if (_isArray2) {
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if (_i2 >= _iterator2.length) break;
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_ref2 = _iterator2[_i2++];
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} else {
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_i2 = _iterator2.next();
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if (_i2.done) break;
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_ref2 = _i2.value;
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}
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var prefix = _ref2;
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prefix = utils.removeNote(prefix);
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if (prefix.length > max) {
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max = prefix.length;
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}
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}
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decl._autoprefixerMax = max;
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return decl._autoprefixerMax;
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};
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/**
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* Calculate indentation to create visual cascade
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*/
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Declaration.prototype.calcBefore = function calcBefore(prefixes, decl) {
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var prefix = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';
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var max = this.maxPrefixed(prefixes, decl);
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var diff = max - utils.removeNote(prefix).length;
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var before = decl.raw('before');
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if (diff > 0) {
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before += Array(diff).fill(' ').join('');
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}
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return before;
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};
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/**
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* Remove visual cascade
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*/
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Declaration.prototype.restoreBefore = function restoreBefore(decl) {
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var lines = decl.raw('before').split('\n');
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var min = lines[lines.length - 1];
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this.all.group(decl).up(function (prefixed) {
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var array = prefixed.raw('before').split('\n');
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var last = array[array.length - 1];
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if (last.length < min.length) {
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min = last;
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}
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});
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lines[lines.length - 1] = min;
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decl.raws.before = lines.join('\n');
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};
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/**
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* Clone and insert new declaration
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*/
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Declaration.prototype.insert = function insert(decl, prefix, prefixes) {
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var cloned = this.set(this.clone(decl), prefix);
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if (!cloned) return undefined;
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var already = decl.parent.some(function (i) {
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return i.prop === cloned.prop && i.value === cloned.value;
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});
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if (already) {
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return undefined;
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}
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if (this.needCascade(decl)) {
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cloned.raws.before = this.calcBefore(prefixes, decl, prefix);
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}
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return decl.parent.insertBefore(decl, cloned);
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};
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/**
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* Did this declaration has this prefix above
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*/
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Declaration.prototype.isAlready = function isAlready(decl, prefixed) {
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var already = this.all.group(decl).up(function (i) {
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return i.prop === prefixed;
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});
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if (!already) {
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already = this.all.group(decl).down(function (i) {
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return i.prop === prefixed;
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});
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}
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return already;
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};
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/**
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* Clone and add prefixes for declaration
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*/
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Declaration.prototype.add = function add(decl, prefix, prefixes, result) {
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var prefixed = this.prefixed(decl.prop, prefix);
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if (this.isAlready(decl, prefixed) || this.otherPrefixes(decl.value, prefix)) {
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return undefined;
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}
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return this.insert(decl, prefix, prefixes, result);
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};
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/**
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* Add spaces for visual cascade
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*/
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Declaration.prototype.process = function process(decl, result) {
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if (!this.needCascade(decl)) {
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_Prefixer.prototype.process.call(this, decl, result);
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return;
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}
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var prefixes = _Prefixer.prototype.process.call(this, decl, result);
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if (!prefixes || !prefixes.length) {
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return;
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}
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this.restoreBefore(decl);
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decl.raws.before = this.calcBefore(prefixes, decl);
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};
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/**
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* Return list of prefixed properties to clean old prefixes
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*/
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Declaration.prototype.old = function old(prop, prefix) {
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return [this.prefixed(prop, prefix)];
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};
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return Declaration;
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}(Prefixer);
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module.exports = Declaration;
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