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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = mergeRules;
var _hasAllProps = _interopRequireDefault(require("./hasAllProps"));
var _getDecls = _interopRequireDefault(require("./getDecls"));
var _getRules = _interopRequireDefault(require("./getRules"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function isConflictingProp(propA, propB) {
if (!propB.prop || propB.important !== propA.important) {
return;
}
const parts = propA.prop.split('-');
return parts.some(() => {
parts.pop();
return parts.join('-') === propB.prop;
});
}
function hasConflicts(match, nodes) {
const firstNode = Math.min.apply(null, match.map(n => nodes.indexOf(n)));
const lastNode = Math.max.apply(null, match.map(n => nodes.indexOf(n)));
const between = nodes.slice(firstNode + 1, lastNode);
return match.some(a => between.some(b => isConflictingProp(a, b)));
}
function mergeRules(rule, properties, callback) {
let decls = (0, _getDecls.default)(rule, properties);
while (decls.length) {
const last = decls[decls.length - 1];
const props = decls.filter(node => node.important === last.important);
const rules = (0, _getRules.default)(props, properties);
if ((0, _hasAllProps.default)(rules, ...properties) && !hasConflicts(rules, rule.nodes)) {
if (callback(rules, last, props)) {
decls = decls.filter(node => !~rules.indexOf(node));
}
}
decls = decls.filter(node => node !== last);
}
}
module.exports = exports.default;