deno.land / std@0.166.0 / io / types.d.ts

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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
export interface Reader { /** Reads up to `p.byteLength` bytes into `p`. It resolves to the number of * bytes read (`0` < `n` <= `p.byteLength`) and rejects if any error * encountered. Even if `read()` resolves to `n` < `p.byteLength`, it may * use all of `p` as scratch space during the call. If some data is * available but not `p.byteLength` bytes, `read()` conventionally resolves * to what is available instead of waiting for more. * * When `read()` encounters end-of-file condition, it resolves to EOF * (`null`). * * When `read()` encounters an error, it rejects with an error. * * Callers should always process the `n` > `0` bytes returned before * considering the EOF (`null`). Doing so correctly handles I/O errors that * happen after reading some bytes and also both of the allowed EOF * behaviors. * * Implementations should not retain a reference to `p`. * * Use iterateReader() from https://deno.land/std@$STD_VERSION/streams/conversion.ts to turn a Reader into an * AsyncIterator. */ read(p: Uint8Array): Promise<number | null>;}
export interface ReaderSync { /** Reads up to `p.byteLength` bytes into `p`. It resolves to the number * of bytes read (`0` < `n` <= `p.byteLength`) and rejects if any error * encountered. Even if `read()` returns `n` < `p.byteLength`, it may use * all of `p` as scratch space during the call. If some data is available * but not `p.byteLength` bytes, `read()` conventionally returns what is * available instead of waiting for more. * * When `readSync()` encounters end-of-file condition, it returns EOF * (`null`). * * When `readSync()` encounters an error, it throws with an error. * * Callers should always process the `n` > `0` bytes returned before * considering the EOF (`null`). Doing so correctly handles I/O errors that happen * after reading some bytes and also both of the allowed EOF behaviors. * * Implementations should not retain a reference to `p`. * * Use iterateReaderSync() from https://deno.land/std@$STD_VERSION/streams/conversion.ts to turn a ReaderSync * into an Iterator. */ readSync(p: Uint8Array): number | null;}
export interface Writer { /** Writes `p.byteLength` bytes from `p` to the underlying data stream. It * resolves to the number of bytes written from `p` (`0` <= `n` <= * `p.byteLength`) or reject with the error encountered that caused the * write to stop early. `write()` must reject with a non-null error if * would resolve to `n` < `p.byteLength`. `write()` must not modify the * slice data, even temporarily. * * Implementations should not retain a reference to `p`. */ write(p: Uint8Array): Promise<number>;}
export interface WriterSync { /** Writes `p.byteLength` bytes from `p` to the underlying data * stream. It returns the number of bytes written from `p` (`0` <= `n` * <= `p.byteLength`) and any error encountered that caused the write to * stop early. `writeSync()` must throw a non-null error if it returns `n` < * `p.byteLength`. `writeSync()` must not modify the slice data, even * temporarily. * * Implementations should not retain a reference to `p`. */ writeSync(p: Uint8Array): number;}
export interface Closer { close(): void;}
std
Deno standard library
GitHub Repositorydenoland/deno_std
GitHub Stars
2448

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Tagged at
2 months ago