18 lines
687 B
TypeScript
18 lines
687 B
TypeScript
export function normalizeHostname(valueArg: string): string {
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const trimmedValue = valueArg.trim().toLowerCase();
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if (!trimmedValue) return '';
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const withoutProtocol = trimmedValue.replace(/^[a-z][a-z0-9+.-]*:\/\//, '');
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const withoutPath = withoutProtocol.split('/')[0].split('?')[0].split('#')[0];
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return withoutPath.replace(/:\d+$/, '').replace(/\.$/, '');
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}
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export function isValidHostname(hostnameArg: string): boolean {
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if (!hostnameArg) return true;
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if (hostnameArg.length > 253) return false;
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return hostnameArg.split('.').every((label) => {
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if (!label || label.length > 63) return false;
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return /^[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/.test(label);
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});
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}
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