Function firstNumber

packages/ai/src/utilities/numbers.ts:8–15

(...candidates: Array<unknown>)

 * by the OTel middleware, or the optional numeric fields on `TokenUsage`.
 */
export function firstNumber(...candidates: Array<unknown>): number | undefined {
  for (const candidate of candidates) {
    if (typeof candidate === 'number' && Number.isFinite(candidate)) {
      return candidate
    }
  }
  return undefined
}