| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @flow |
| 8 | */ |
| 9 | |
| 10 | import {TextDecoder} from 'util'; |
| 11 | |
| 12 | export type StringDecoder = TextDecoder; |
| 13 | |
| 14 | export function createStringDecoder(): StringDecoder { |
| 15 | return new TextDecoder(); |
| 16 | } |
| 17 | |
| 18 | const decoderOptions = {stream: true}; |
| 19 | |
| 20 | export function readPartialStringChunk( |
| 21 | decoder: StringDecoder, |
| 22 | buffer: Uint8Array, |
| 23 | ): string { |
| 24 | // $FlowFixMe[incompatible-type] |
| 25 | return decoder.decode(buffer, decoderOptions); |
| 26 | } |
| 27 | |
| 28 | export function readFinalStringChunk( |
| 29 | decoder: StringDecoder, |
| 30 | buffer: Uint8Array, |
| 31 | ): string { |
| 32 | return decoder.decode(buffer); |
| 33 | } |