egirlskey/packages/backend/src/misc/id/ulid.ts
2023-04-09 04:41:06 +09:00

14 lines
435 B
TypeScript

// Crockford's Base32
// https://github.com/ulid/spec#encoding
const CHARS = '0123456789ABCDEFGHJKMNPQRSTVWXYZ';
export const ulidRegExp = /^[0123456789ABCDEFGHJKMNPQRSTVWXYZ]{26}$/;
export function parseUlid(id: string): { date: Date; } {
const timestamp = id.slice(0, 10);
let time = 0;
for (let i = 0; i < 10; i++) {
time = time * 32 + CHARS.indexOf(timestamp[i]);
}
return { date: new Date(time) };
}