function isContentPartArray(value): value is ContentPart[];function isContentPartArray(value): value is ContentPart[];Defined in: packages/ai/src/utilities/tool-result.ts:42
True iff value is a NON-EMPTY array whose every element is a valid ContentPart. Empty arrays and mixed arrays return false so they continue to be treated as ordinary (stringified) data — this keeps the auto-detection footgun narrow.
unknown
value is ContentPart[]