Sha256: fe9ff690217136be9060477f3c32bdd7503be56235d6dc80716c683889afad52
Contents?: true
Size: 1.57 KB
Versions: 23
Compression:
Stored size: 1.57 KB
Contents
'use strict';
const mediaParser = require('postcss-media-query-parser').default;
const report = require('../../utils/report');
const ruleMessages = require('../../utils/ruleMessages');
const validateOptions = require('../../utils/validateOptions');
const valueParser = require('postcss-value-parser');
const ruleName = 'no-duplicate-at-import-rules';
const messages = ruleMessages(ruleName, {
rejected: (atImport) => `Unexpected duplicate @import rule ${atImport}`,
});
function rule(actual) {
return (root, result) => {
const validOptions = validateOptions(result, ruleName, { actual });
if (!validOptions) {
return;
}
const imports = {};
root.walkAtRules(/^import$/i, (atRule) => {
const params = valueParser(atRule.params).nodes;
if (!params.length) {
return;
}
// extract uri from url() if exists
const uri =
params[0].type === 'function' && params[0].value === 'url'
? params[0].nodes[0].value
: params[0].value;
// extract media queries if any
const media = mediaParser(valueParser.stringify(params.slice(1)))
.nodes.map((n) => n.value.replace(/\s/g, ''))
.filter((n) => n.length);
const isDuplicate = media.length
? imports[uri] && media.some((q) => imports[uri].includes(q))
: imports[uri];
if (isDuplicate) {
report({
message: messages.rejected(uri),
node: atRule,
result,
ruleName,
});
return;
}
if (!imports[uri]) imports[uri] = [];
imports[uri] = imports[uri].concat(media);
});
};
}
rule.ruleName = ruleName;
rule.messages = messages;
module.exports = rule;
Version data entries
23 entries across 23 versions & 1 rubygems