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x/replicache/uuid.ts

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export function uuid(): string { const numbers = new Uint8Array(36); crypto.getRandomValues(numbers); return uuidFromNumbers(numbers);}
const enum UuidElements { Random09AF, Random89AB, Hyphen, Version,}
const UUID_V4_FORMAT = [ UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Hyphen, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Hyphen, UuidElements.Version, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Hyphen, UuidElements.Random89AB, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Hyphen, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF, UuidElements.Random09AF,] as const;
export function uuidFromNumbers(random_numbers: Uint8Array): string { return UUID_V4_FORMAT.map((kind, i) => { switch (kind) { case UuidElements.Random09AF: return (random_numbers[i] & 0b1111).toString(16);
case UuidElements.Random89AB: return ((random_numbers[i] & 0b11) + 8).toString(16);
case UuidElements.Version: return '4'; case UuidElements.Hyphen: return '-'; } }).join('');}