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Type structuredClone typed arrays as ArrayBuffer-backed #59147

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SamChou19815 wants to merge 1 commit into from
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Type structuredClone typed arrays as ArrayBuffer-backed #59147

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6 changes: 4 additions & 2 deletions packages/react-native/src/private/webapis/structuredClone/structuredClone.js
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Original file line number Diff line number Diff line change
Expand Up @@ -308,7 +308,7 @@ function cloneArrayBuffer(value: ArrayBuffer): ArrayBuffer {
return result;
}

function cloneTypedArray(value: $TypedArray): $TypedArray {
function cloneTypedArray(value: $TypedArray<ArrayBuffer>): $TypedArray {
const buffer = cloneArrayBuffer(value.buffer);
const {byteOffset, length} = value;

Expand Down Expand Up @@ -365,7 +365,9 @@ function defineEnumerableProperty(
});
}

declare function isTypedArray(value: unknown): implies value is $TypedArray;
declare function isTypedArray(
value: unknown,
): implies value is $TypedArray<ArrayBuffer>;
function isTypedArray(value: unknown): boolean {
return ArrayBuffer.isView(value) && !(value instanceof DataView);
}
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