48 lines
1.2 KiB
TypeScript
Vendored
48 lines
1.2 KiB
TypeScript
Vendored
import url from 'url';
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import isurl from 'is-url';
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import tlds from './tlds.js';
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export function getDomain(inputUrl: string) {
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const parsed = url.parse(inputUrl).host;
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var parts = parsed.split('.');
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if (parts[0] === 'www' && parts[1] !== 'com') {
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parts.shift();
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}
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var ln = parts.length,
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i = ln,
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minLength = parts[parts.length - 1].length,
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part;
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// iterate backwards
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while ((part = parts[--i])) {
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// stop when we find a non-TLD part
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if (
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i === 0 || // 'asia.com' (last remaining must be the SLD)
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i < ln - 2 || // TLDs only span 2 levels
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part.length < minLength || // 'www.cn.com' (valid TLD as second-level domain)
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tlds.indexOf(part) < 0 // officialy not a TLD
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) {
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return part;
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}
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}
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}
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function appendProtocol(inputUrl: string): string {
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const parsed = url.parse(inputUrl);
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if (!parsed.protocol) {
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const urlWithProtocol = `https://${inputUrl}`;
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return urlWithProtocol;
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}
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return inputUrl;
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}
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export function normalizeUrl(urlToNormalize: string): string {
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const urlWithProtocol = appendProtocol(urlToNormalize);
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if (isurl(urlWithProtocol)) {
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return urlWithProtocol;
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} else {
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throw new Error(`Your url "${urlWithProtocol}" is invalid`);
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}
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}
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