feat(io): re-introduce IO functions #4128
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| * file.close(); | ||
| * ``` | ||
| */ | ||
| export async function readAll(reader: Reader): Promise<Uint8Array> { |
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This function differs from readAll() from std/streams in that it doesn't depend on Buffer() from std/io. It's simpler, only relying on concat(). This should be a non-breaking change.
| * | ||
| * @example | ||
| * ```ts | ||
| * import { readAll } from "https://deno.land/std@$STD_VERSION/io/read_all.ts"; |
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Note: Buffer() is not imported here as it's deprecated.
| Deno.test("readAll()", async () => { | ||
| const testBytes = init(); | ||
| assert(testBytes); | ||
| const reader = new Buffer(testBytes.buffer); |
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We rely on Buffer() here but should work on removing that dependency in the future (in a PR).
| * const fileStream = toReadableStream(file); | ||
| * ``` | ||
| */ | ||
| export function toReadableStream( |
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Note: renamed from readableStreamfFromReader().
| * .pipeTo(toWritableStream(file)); | ||
| * ``` | ||
| */ | ||
| export function toWritableStream( |
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Note: renamed from writableStreamFromWriter().
| * {@linkcode ReadableStream.pipeTo} instead. | ||
| * @deprecated (will be removed in 0.214.0) Import from {@link https://deno.land/std/io/copy.ts} instead. | ||
| */ | ||
| export async function copy( |
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Note: a copySync() could be implemented. But there's never been any demand for it. I also wonder whether there's demand for readAllSync() and writeAllSync().
We could also name this copyAll() to align it with readAll() and writeAll().
This change re-introduces some of the previously deprecated and I/O-related functions and types. In short, these functions are moved from
std/streamstostd/io, which makes a lot more sense, in my opinion. These changes also include a few minor non-breaking (hopefully) tweaks.The refreshed
std/ioAPI aims to be as basic and minimal as possible while still covering the basic I/O modalities such as reading (readAll()), writing (writeAll()) and transferring (copy()), as well as conversion utilities to the Streams API's interfaces for more advanced use. E.g.TextLineStream(). There's an argument to be made that storage (Buffer) should be included in these primary modalities, but users may be fine without it.Closes #4120
Towards denoland/deno#9795