| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| |
| var _postcss = require('postcss'); |
| |
| var _postcssValueParser = require('postcss-value-parser'); |
| |
| var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser); |
| |
| 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 }; } |
| |
| const getMatch = (0, _cssnanoUtilGetMatch2.default)(_map2.default); |
| const getValue = node => parseFloat(node.value); |
| |
| function evenValues(list, index) { |
| return index % 2 === 0; |
| } |
| |
| function reduce(node) { |
| if (node.type !== 'function') { |
| return false; |
| } |
| |
| const lowerCasedValue = node.value.toLowerCase(); |
| |
| if (lowerCasedValue === 'steps') { |
| // Don't bother checking the step-end case as it has the same length |
| // as steps(1) |
| if (getValue(node.nodes[0]) === 1 && node.nodes[2] && node.nodes[2].value.toLowerCase() === 'start') { |
| node.type = 'word'; |
| node.value = 'step-start'; |
| |
| delete node.nodes; |
| |
| return; |
| } |
| |
| // The end case is actually the browser default, so it isn't required. |
| if (node.nodes[2] && node.nodes[2].value.toLowerCase() === 'end') { |
| node.nodes = [node.nodes[0]]; |
| |
| return; |
| } |
| |
| return false; |
| } |
| |
| if (lowerCasedValue === 'cubic-bezier') { |
| const match = getMatch(node.nodes.filter(evenValues).map(getValue)); |
| |
| if (match) { |
| node.type = 'word'; |
| node.value = match; |
| |
| delete node.nodes; |
| |
| return; |
| } |
| } |
| } |
| |
| exports.default = (0, _postcss.plugin)('postcss-normalize-timing-functions', () => { |
| return css => { |
| const cache = {}; |
| |
| css.walkDecls(/(animation|transition)(-timing-function|$)/i, decl => { |
| const value = decl.value; |
| |
| if (cache[value]) { |
| decl.value = cache[value]; |
| |
| return; |
| } |
| |
| const result = (0, _postcssValueParser2.default)(value).walk(reduce).toString(); |
| |
| decl.value = result; |
| cache[value] = result; |
| }); |
| }; |
| }); |
| module.exports = exports['default']; |