Error: unknown format

[perry-mitchell]

Receiving an unexpected error when trying to parse random strings. I'd expect it to return null like in the documentation, not throw an error:

import { FinnishSSN } from "finnish-ssn";
import { parse as parseSweSSN } from "sweden-national-id";

export function isValidSSN(ssn: string): boolean {
    if (FinnishSSN.validate(ssn)) return true;
    const sweSSN = parseSweSSN(ssn);
    if (sweSSN) return true;
    return false;
}

Error: unknown format
     at format (node_modules/sweden-national-id/dist/format.js:24:19)
     at parse (node_modules/sweden-national-id/dist/national-id-number.js:24:50)
     at isValidSSN (file:///home/perry/<snip>/bots/dist/test/projects/shared/library/ssn.js:6:20)
     at validateStringWithoutPII (file:///home/perry/<snip>/bots/dist/test/projects/shared/schemaHelpers.js:136:13)
     at Context.<anonymous> (file:///home/perry/<snip>/bots/dist/test/test/shared/unit/schemaHelpers.spec.js:40:20)
     at process.processImmediate (node:internal/timers:478:21)

Value can be literally anything, and it breaks.

For instance, I was testing segments of a piece of text, looking for a Swedish SSN, and it broke on every value:

export function isValidSSN(ssn: string): boolean {
    if (FinnishSSN.validate(ssn)) return true;
    try {
        const sweSSN = parseSweSSN(ssn);
        if (sweSSN) return true;
    } catch (err) {
        console.error("SSN ERR:    "+ssn);
        return false;
    }
    return false;
}

SSN TEST:    my
SSN TEST:    number
SSN TEST:    is
SSN TEST:    my
SSN TEST:    number
SSN TEST:    is
SSN TEST:    0439200192.

I'm using Node 20 under docker, with typescript v5.