Add TypedArray, UInt8Array in JSI (#56158)#56158
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TypedArray, UInt8Array in JSITypedArray, UInt8Array in JSI (#56158)
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Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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Mar 31, 2026
Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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Summary: After reviewing the feasibility of adding new Runtime functionality, we realized the current state of `Runtime` makes it hard/inconvenient to add new basic functionality. It requires creating a new interface (e.g. `IRuntime2`) to declare the new APIs. Then, everywhere it is needed, both the original `Runtime` and `IRuntime2` needs to passed in to access both APIs. After discussion, we decided to introduce `IRuntime`, which will declare most of the `Runtime` functionalities. All "protected" APIs, which made sense before interfaces were introduced, will now be public. The protected static methods of `Runtime` will remain as is for the Friends to access. After we decided to cut "stable" (after incoming JSI improvements), new functionalities will be added in `IRuntime2` interface. `IRuntime2` will inherit `IRuntime` to make existing functionality easy to access. Differential Revision: D89093651
Summary: Currently, the size of a jsi `Array` is immutable. Once the `Array` is created, users can only set the element at an existing index, but not append to it. This change adds an `Array::push` API to improve ergonomics. Differential Revision: D82254334
Summary: Adds `ArrayBuffer::getMutableBuffer` to JSI. This allows the user to retrieve a `MutableBuffer` from the `ArrayBuffer`. The data referenced by the `MutableBuffer` will be alive during the entirety of the `MutableBuffer` lifespan. Addresses: facebook/hermes#1578 Differential Revision: D91264901
Differential Revision: D92993088
tsaichien
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Apr 14, 2026
Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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tsaichien
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Apr 14, 2026
Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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tsaichien
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Apr 14, 2026
Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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Summary: Pull Request resolved: facebook#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175
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meta-codesync Bot
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Apr 15, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
meta-codesync Bot
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Apr 15, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
meta-codesync Bot
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Apr 15, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
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This pull request has been merged in 572e661. |
tsaichien
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Apr 15, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
tsaichien
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Apr 15, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
tsaichien
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Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
tsaichien
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Apr 15, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
tsaichien
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Apr 16, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
tsaichien
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Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
tsaichien
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Apr 16, 2026
Summary: X-link: facebook/react-native#56158 Add TypedArray and Uint8Array types to JSI with supporting APIs. New types: - `TypedArray`: Base class for all typed arrays - `Uint8Array`: Uint8Array type extending TypedArray New IRuntime APIs: - `getBuffer(TypedArray)`: Get underlying ArrayBuffer - `getByteOffset(TypedArray)`: Get byte offset property - `getByteLength(TypedArray)`: Get byte length property - `getLength(TypedArray)`: Get length property - `createUint8Array(size_t)`: Create Uint8Array with length - `createUint8Array(ArrayBuffer, offset, length)`: Create from ArrayBuffer - `isUint8Array(Object)`: Check if object is Uint8Array Changelog: [Internal] Reviewed By: lavenzg Differential Revision: D95245175 fbshipit-source-id: 33e7f5d9de42bfcc0b7a57c681fdd73711c2bb13
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Summary:
Add TypedArray and Uint8Array types to JSI with supporting APIs.
New types:
TypedArray: Base class for all typed arraysUint8Array: Uint8Array type extending TypedArrayNew IRuntime APIs:
getBuffer(TypedArray): Get underlying ArrayBuffergetByteOffset(TypedArray): Get byte offset propertygetByteLength(TypedArray): Get byte length propertygetLength(TypedArray): Get length propertycreateUint8Array(size_t): Create Uint8Array with lengthcreateUint8Array(ArrayBuffer, offset, length): Create fromArrayBuffer
isUint8Array(Object): Check if object is Uint8ArrayChangelog: [Internal]
Reviewed By: lavenzg
Differential Revision: D95245175