1 |
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2 | import { Transform } from 'stream';
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3 | import type * as stream from 'stream';
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4 | declare type GetPropValue<T, K extends PropertyKey> = K extends (keyof T) ? T[K] : undefined;
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5 | declare type IfNeverThenUnknown<T> = [T] extends [never] ? unknown : T;
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6 |
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7 |
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8 |
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9 |
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10 | export declare type InputChunkType<T extends stream.TransformOptions> = (true extends GetPropValue<T, 'objectMode' | 'writableObjectMode'> ? unknown : Buffer);
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11 |
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12 |
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13 |
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14 |
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15 |
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16 | export declare type OutputChunkType<T extends stream.TransformOptions> = IfNeverThenUnknown<T extends ({
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17 | objectMode: true;
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18 | } | {
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19 | readableObjectMode: true;
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20 | }) ? never : string | Buffer | Uint8Array>;
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21 | export declare type SourceIterator<TOpts extends stream.TransformOptions> = (AsyncIterableIterator<{
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22 | chunk: InputChunkType<TOpts>;
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23 | encoding: BufferEncoding;
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24 | }>);
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25 | export declare type TransformFunction<TOpts extends stream.TransformOptions> = ((source: SourceIterator<TOpts>) => Iterable<OutputChunkType<TOpts>> | AsyncIterable<OutputChunkType<TOpts>>);
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26 | export declare class TransformFromAsyncIterable<TOpts extends stream.TransformOptions = Record<string, never>> extends Transform {
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27 | private transformCallback;
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28 | private isFinished;
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29 | private receiveData?;
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30 | private readonly receivedDataList;
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31 | constructor(transformFn: TransformFunction<TOpts>, opts?: TOpts);
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32 | _transform(chunk: InputChunkType<TOpts>, encoding: BufferEncoding, callback: stream.TransformCallback): void;
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33 | _flush(callback: stream.TransformCallback): void;
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34 | private finish;
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35 | private callTransformCallback;
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36 | private createSource;
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37 | private emitToSource;
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38 | private emitFinishEventAfterCallback;
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39 | }
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40 | export declare function transformFrom<TOpts extends stream.TransformOptions = Record<string, never>>(transformFn: TransformFunction<TOpts>, options?: TOpts): stream.Transform;
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41 | export {};
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42 |
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