Function parsePositiveInt

packages/cli/src/commands/lambda.ts:431–438

* Parse a flag that must be a positive integer (>= 1) when supplied. * Negative values or non-integers fail loudly instead of flowing into * the SDK and producing opaque AWS validation errors mid-render.

(raw: unknown, flagName: string)

 * the SDK and producing opaque AWS validation errors mid-render.
 */
function parsePositiveInt(raw: unknown, flagName: string): number | undefined {
  const n = parseIntFlag(raw);
  if (n === undefined) return undefined;
  if (!Number.isInteger(n) || n < 1) {
    throw new Error(`[lambda] ${flagName} must be a positive integer; got ${n}`);
  }
  return n;
}

/**
 * Parse a string-union flag against a closed set of allowed values.