Function validateMrzNumber

Public algorithm primitives. Tree-shakable subpath: nationid/algorithms.

Each function is a pure mathematical primitive with cited spec.

validateMrzNumber(input: string): boolean
Validate a 9-char document number + 1-char check digit (10 chars total).

Returns true iff the input is exactly 10 chars, the body matches the MRZ alphabet ([0-9A-Z<]{9}), the check digit is a single decimal, and mrzCheckDigit(input.slice(0, 9)) === Number(input[9]).

Never throws — invalid input simply returns false.
Parameters
- input: string
  10-char string: 9 MRZ-alphabet chars + 1 decimal check digit.
Returns boolean
true if the input is a well-formed, checksum-correct MRZ number.
Example
```
import { validateMrzNumber, toMrzField9, mrzCheckDigit } from "nationid/algorithms";

const body = toMrzField9("L898902C");      // "L898902C<"
const full = body + String(mrzCheckDigit(body));
validateMrzNumber(full); // true
```
- Defined in algorithms/icao-9303.ts:101