30 lines
681 B
JavaScript
30 lines
681 B
JavaScript
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'use strict';
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var extractTldFromHost = require('./from-host.js');
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/**
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* Returns the public suffix (including exact matches)
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*
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* @api
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* @since 1.5
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* @param {string} hostname
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* @return {string}
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*/
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module.exports = function getPublicSuffix(rules, hostname) {
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// First check if `hostname` is already a valid top-level Domain.
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if (rules.hasTld(hostname)) {
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return hostname;
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}
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var candidate = rules.suffixLookup(hostname);
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if (candidate === null) {
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// Prevailing rule is '*' so we consider the top-level domain to be the
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// public suffix of `hostname` (e.g.: 'example.org' => 'org').
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return extractTldFromHost(hostname);
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}
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return candidate;
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};
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