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31 lines
709 B
JavaScript
31 lines
709 B
JavaScript
// @ts-check
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const createTrie = require('./trie');
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/**
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* @param {string[]} inputDomains
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*/
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const domainDeduper = (inputDomains) => {
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const trie = createTrie(inputDomains);
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const sets = new Set(inputDomains);
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for (let j = 0, len = inputDomains.length; j < len; j++) {
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const d = inputDomains[j];
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if (d[0] !== '.') {
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continue;
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}
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// delete all included subdomains (ends with `.example.com`)
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trie.find(d, false).forEach(f => sets.delete(f));
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// if `.example.com` exists, then `example.com` should also be removed
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const a = d.slice(1);
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if (trie.has(a)) {
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sets.delete(a);
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}
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}
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return Array.from(sets);
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};
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module.exports.domainDeduper = domainDeduper;
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