66 lines
2 KiB
JavaScript
Executable file
66 lines
2 KiB
JavaScript
Executable file
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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var _browserslist = _interopRequireDefault(require("browserslist"));
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var _caniuseApi = require("caniuse-api");
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var _fromInitial = _interopRequireDefault(require("../data/fromInitial.json"));
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var _toInitial = _interopRequireDefault(require("../data/toInitial.json"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const initial = 'initial'; // In most of the browser including chrome the initial for `writing-mode` is not `horizontal-tb`. Ref https://github.com/cssnano/cssnano/pull/905
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const defaultIgnoreProps = ['writing-mode'];
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function pluginCreator() {
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return {
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postcssPlugin: 'postcss-reduce-initial',
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prepare(result) {
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const resultOpts = result.opts || {};
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const browsers = (0, _browserslist.default)(null, {
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stats: resultOpts.stats,
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path: __dirname,
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env: resultOpts.env
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});
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const initialSupport = (0, _caniuseApi.isSupported)('css-initial-value', browsers);
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return {
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OnceExit(css) {
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css.walkDecls(decl => {
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const lowerCasedProp = decl.prop.toLowerCase();
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const ignoreProp = defaultIgnoreProps.concat(resultOpts.ignore || []);
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if (ignoreProp.includes(lowerCasedProp)) {
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return;
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}
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if (initialSupport && Object.prototype.hasOwnProperty.call(_toInitial.default, lowerCasedProp) && decl.value.toLowerCase() === _toInitial.default[lowerCasedProp]) {
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decl.value = initial;
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return;
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}
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if (decl.value.toLowerCase() !== initial || !_fromInitial.default[lowerCasedProp]) {
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return;
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}
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decl.value = _fromInitial.default[lowerCasedProp];
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});
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}
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};
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}
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};
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}
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pluginCreator.postcss = true;
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var _default = pluginCreator;
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exports.default = _default;
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module.exports = exports.default; |