Function flattenNested

packages/telemetry/src/transport.ts:266–272

(target: Record<string, TelemetryPrimitive>, prefix: string, value: unknown)

}

function flattenNested(target: Record<string, TelemetryPrimitive>, prefix: string, value: unknown) {
  if (value === null || typeof value !== 'object' || Array.isArray(value)) return;
  for (const [key, nestedValue] of Object.entries(value)) {
    assertPrimitive(`${prefix}.${key}`, nestedValue);
    target[`${prefix}_${key}`] = nestedValue;
  }
}

function assertPrimitive(key: string, value: unknown): asserts value is TelemetryPrimitive {
  if (isTelemetryPrimitive(value)) return;