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CSS Post-Processor that chunks CSS files per IE9 selector count restrictions
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<a href="../index.html">all files</a> / <a href="index.html">src/</a> count.js
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<div class='fl pad1y space-right2'>
<span class="strong">55.17% </span>
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<span class="strong">66.67% </span>
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<span class="strong">30% </span>
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<span class="strong">53.57% </span>
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<span class='fraction'>15/28</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/* eslint no-use-before-define: 0 */
import fsp from 'fs-promise';
import css from 'css';
import { SELECTOR_LIMIT } from './constants';
import { expand } from './fs-utils';
function count(ast) {
function countRules(rules) {
return rules.reduce((acc, rule) => acc + count(rule), 0);
}
switch (ast.type) {
case <span class="branch-0 cbranch-no" title="branch not covered" >'stylesheet':</span>
return <span class="cstat-no" title="statement not covered" >countRules(ast.stylesheet.rules);</span>
case 'rule':
return ast.selectors.length;
// Don't affect selector limit
case 'comment':
case 'font-face':
case 'keyframes':
case 'import':
case 'supports':
case 'charset':
case 'namespace':
return 0;
case 'page':
return 1;
default:
return countRules(ast.rules);
}
}
<span class="fstat-no" title="function not covered" >function countFile(filepath, options) {</span>
return <span class="cstat-no" title="statement not covered" >fsp.readFile(filepath, { encoding: 'utf8' })</span>
.then(<span class="fstat-no" title="function not covered" >contents => {</span>
let <span class="cstat-no" title="statement not covered" >ast = css.parse(contents);</span>
let <span class="cstat-no" title="statement not covered" >selectorCount = count(ast);</span>
return <span class="cstat-no" title="statement not covered" >{</span>
filepath,
selectorCount,
exceedsLimit: selectorCount > SELECTOR_LIMIT
};
});
}
<span class="fstat-no" title="function not covered" >function countPath(filepath, options) {</span>
options = <span class="cstat-no" title="statement not covered" >options || {};</span>
return <span class="cstat-no" title="statement not covered" >expand(filepath)</span>
.filter(<span class="fstat-no" title="function not covered" >x => <span class="cstat-no" title="statement not covered" >/\.css$/.test(x))</span></span>
.map(<span class="fstat-no" title="function not covered" >x => <span class="cstat-no" title="statement not covered" >countFile(x, options))</span></span>
.flatMap(<span class="fstat-no" title="function not covered" >x => {</span>
if (<span class="cstat-no" title="statement not covered" >options.progress) {</span>
options.<span class="cstat-no" title="statement not covered" >progress(x.filepath);</span>
}
return <span class="cstat-no" title="statement not covered" >x;</span>
})
.reduce(<span class="fstat-no" title="function not covered" >(acc, x) => <span class="cstat-no" title="statement not covered" >acc.concat([x]), [])</span></span>
.toPromise(Promise);
}
export default {
count,
countPath
};
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Code coverage
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