36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
var postcss = require('postcss');
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var makeFallbackFunction = require('./lib/rules-fabric');
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module.exports = postcss.plugin('postcss-initial', function (opts) {
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opts = opts || {};
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opts.reset = opts.reset || 'all';
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opts.replace = opts.replace || false;
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var getFallback = makeFallbackFunction(opts.reset === 'inherited');
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var getPropPrevTo = function (prop, decl) {
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var foundPrev = false;
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decl.parent.walkDecls(function (child) {
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if (child.prop === decl.prop && child.value !== decl.value) {
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foundPrev = true;
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}
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});
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return foundPrev;
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};
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return function (css) {
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css.walkDecls(function (decl) {
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if (decl.value.indexOf('initial') < 0) {
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return;
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}
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var fallBackRules = getFallback(decl.prop, decl.value);
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if (fallBackRules.length === 0) return;
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fallBackRules.forEach(function (rule) {
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if ( !getPropPrevTo(decl.prop, decl) ) {
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decl.cloneBefore(rule);
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}
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});
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if (opts.replace === true) {
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decl.remove();
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}
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});
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};
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});
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