shift73k/assets_old/node_modules/postcss-normalize-repeat-style/dist/index.js

119 lines
3.3 KiB
JavaScript
Raw Normal View History

'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _postcss = require('postcss');
var _postcss2 = _interopRequireDefault(_postcss);
var _postcssValueParser = require('postcss-value-parser');
var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
var _cssnanoUtilGetArguments = require('cssnano-util-get-arguments');
var _cssnanoUtilGetArguments2 = _interopRequireDefault(_cssnanoUtilGetArguments);
var _cssnanoUtilGetMatch = require('cssnano-util-get-match');
var _cssnanoUtilGetMatch2 = _interopRequireDefault(_cssnanoUtilGetMatch);
var _map = require('./lib/map');
var _map2 = _interopRequireDefault(_map);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function evenValues(list, index) {
return index % 2 === 0;
}
const repeatKeywords = _map2.default.map(mapping => mapping[0]);
const getMatch = (0, _cssnanoUtilGetMatch2.default)(_map2.default);
exports.default = _postcss2.default.plugin('postcss-normalize-repeat-style', () => {
return css => {
const cache = {};
css.walkDecls(/background(-repeat)?|(-webkit-)?mask-repeat/i, decl => {
const value = decl.value;
if (cache[value]) {
decl.value = cache[value];
return;
}
const parsed = (0, _postcssValueParser2.default)(value);
if (parsed.nodes.length === 1) {
cache[value] = value;
return;
}
const args = (0, _cssnanoUtilGetArguments2.default)(parsed);
const relevant = [];
args.forEach(arg => {
relevant.push({
start: null,
end: null
});
arg.forEach((part, index) => {
const isRepeat = ~repeatKeywords.indexOf(part.value.toLowerCase());
const len = relevant.length - 1;
if (relevant[len].start === null && isRepeat) {
relevant[len].start = index;
relevant[len].end = index;
return;
}
if (relevant[len].start !== null) {
if (part.type === 'space') {
return;
} else if (isRepeat) {
relevant[len].end = index;
return;
}
return;
}
});
});
relevant.forEach((range, index) => {
if (range.start === null) {
return;
}
const val = args[index].slice(range.start, range.end + 1);
if (val.length !== 3) {
return;
}
const match = getMatch(val.filter(evenValues).map(n => n.value.toLowerCase()));
if (match) {
args[index][range.start].value = match;
args[index][range.start + 1].value = '';
args[index][range.end].value = '';
}
});
const result = parsed.toString();
decl.value = result;
cache[value] = result;
});
};
});
module.exports = exports['default'];