mirror of
https://github.com/denoland/deno.git
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2483 lines
85 KiB
TypeScript
Vendored
2483 lines
85 KiB
TypeScript
Vendored
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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/// <reference no-default-lib="true" />
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/// <reference lib="esnext" />
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/// <reference lib="deno.net" />
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/** Deno provides extra properties on `import.meta`. These are included here
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* to ensure that these are still available when using the Deno namespace in
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* conjunction with other type libs, like `dom`. */
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declare interface ImportMeta {
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/** A string representation of the fully qualified module URL. */
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url: string;
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/** A flag that indicates if the current module is the main module that was
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* called when starting the program under Deno.
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*
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* ```ts
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* if (import.meta.main) {
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* // this was loaded as the main module, maybe do some bootstrapping
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* }
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* ```
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*/
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main: boolean;
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}
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/** Deno supports user timing Level 3 (see: https://w3c.github.io/user-timing)
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* which is not widely supported yet in other runtimes. These types are here
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* so that these features are still available when using the Deno namespace
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* in conjunction with other type libs, like `dom`. */
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declare interface Performance {
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/** Stores a timestamp with the associated name (a "mark"). */
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mark(markName: string, options?: PerformanceMarkOptions): PerformanceMark;
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/** Stores the `DOMHighResTimeStamp` duration between two marks along with the
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* associated name (a "measure"). */
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measure(
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measureName: string,
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options?: PerformanceMeasureOptions,
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): PerformanceMeasure;
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}
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declare interface PerformanceMarkOptions {
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/** Metadata to be included in the mark. */
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// deno-lint-ignore no-explicit-any
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detail?: any;
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/** Timestamp to be used as the mark time. */
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startTime?: number;
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}
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declare interface PerformanceMeasureOptions {
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/** Metadata to be included in the measure. */
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// deno-lint-ignore no-explicit-any
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detail?: any;
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/** Timestamp to be used as the start time or string to be used as start
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* mark. */
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start?: string | number;
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/** Duration between the start and end times. */
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duration?: number;
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/** Timestamp to be used as the end time or string to be used as end mark. */
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end?: string | number;
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}
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declare namespace Deno {
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/** A set of error constructors that are raised by Deno APIs. */
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export namespace errors {
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export class NotFound extends Error {}
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export class PermissionDenied extends Error {}
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export class ConnectionRefused extends Error {}
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export class ConnectionReset extends Error {}
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export class ConnectionAborted extends Error {}
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export class NotConnected extends Error {}
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export class AddrInUse extends Error {}
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export class AddrNotAvailable extends Error {}
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export class BrokenPipe extends Error {}
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export class AlreadyExists extends Error {}
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export class InvalidData extends Error {}
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export class TimedOut extends Error {}
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export class Interrupted extends Error {}
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export class WriteZero extends Error {}
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export class UnexpectedEof extends Error {}
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export class BadResource extends Error {}
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export class Http extends Error {}
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export class Busy extends Error {}
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}
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/** The current process id of the runtime. */
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export const pid: number;
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/**
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* The pid of the current process's parent.
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*/
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export const ppid: number;
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export interface MemoryUsage {
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rss: number;
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heapTotal: number;
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heapUsed: number;
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external: number;
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}
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/**
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* Returns an object describing the memory usage of the Deno process measured
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* in bytes.
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*/
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export function memoryUsage(): MemoryUsage;
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/** Reflects the `NO_COLOR` environment variable at program start.
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*
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* See: https://no-color.org/ */
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export const noColor: boolean;
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export interface TestDefinition {
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fn: () => void | Promise<void>;
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name: string;
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ignore?: boolean;
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/** If at least one test has `only` set to true, only run tests that have
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* `only` set to true and fail the test suite. */
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only?: boolean;
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/** Check that the number of async completed ops after the test is the same
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* as number of dispatched ops. Defaults to true. */
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sanitizeOps?: boolean;
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/** Ensure the test case does not "leak" resources - ie. the resource table
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* after the test has exactly the same contents as before the test. Defaults
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* to true. */
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sanitizeResources?: boolean;
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/** Ensure the test case does not prematurely cause the process to exit,
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* for example via a call to `Deno.exit`. Defaults to true. */
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sanitizeExit?: boolean;
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}
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/** Register a test which will be run when `deno test` is used on the command
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* line and the containing module looks like a test module.
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* `fn` can be async if required.
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* ```ts
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* import {assert, fail, assertEquals} from "https://deno.land/std/testing/asserts.ts";
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*
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* Deno.test({
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* name: "example test",
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* fn(): void {
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* assertEquals("world", "world");
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* },
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* });
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*
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* Deno.test({
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* name: "example ignored test",
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* ignore: Deno.build.os === "windows",
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* fn(): void {
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* // This test is ignored only on Windows machines
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* },
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* });
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*
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* Deno.test({
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* name: "example async test",
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* async fn() {
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* const decoder = new TextDecoder("utf-8");
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* const data = await Deno.readFile("hello_world.txt");
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* assertEquals(decoder.decode(data), "Hello world");
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* }
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* });
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* ```
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*/
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export function test(t: TestDefinition): void;
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/** Register a test which will be run when `deno test` is used on the command
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* line and the containing module looks like a test module.
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* `fn` can be async if required.
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*
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* ```ts
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* import {assert, fail, assertEquals} from "https://deno.land/std/testing/asserts.ts";
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*
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* Deno.test("My test description", ():void => {
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* assertEquals("hello", "hello");
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* });
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*
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* Deno.test("My async test description", async ():Promise<void> => {
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* const decoder = new TextDecoder("utf-8");
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* const data = await Deno.readFile("hello_world.txt");
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* assertEquals(decoder.decode(data), "Hello world");
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* });
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* ```
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*/
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export function test(name: string, fn: () => void | Promise<void>): void;
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/** Exit the Deno process with optional exit code. If no exit code is supplied
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* then Deno will exit with return code of 0.
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*
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* ```ts
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* Deno.exit(5);
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* ```
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*/
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export function exit(code?: number): never;
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export const env: {
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/** Retrieve the value of an environment variable. Returns `undefined` if that
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* key doesn't exist.
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*
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* ```ts
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* console.log(Deno.env.get("HOME")); // e.g. outputs "/home/alice"
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* console.log(Deno.env.get("MADE_UP_VAR")); // outputs "undefined"
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* ```
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* Requires `allow-env` permission. */
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get(key: string): string | undefined;
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/** Set the value of an environment variable.
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*
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* ```ts
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* Deno.env.set("SOME_VAR", "Value");
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* Deno.env.get("SOME_VAR"); // outputs "Value"
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* ```
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*
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* Requires `allow-env` permission. */
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set(key: string, value: string): void;
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/** Delete the value of an environment variable.
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*
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* ```ts
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* Deno.env.set("SOME_VAR", "Value");
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* Deno.env.delete("SOME_VAR"); // outputs "undefined"
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* ```
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*
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* Requires `allow-env` permission. */
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delete(key: string): void;
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/** Returns a snapshot of the environment variables at invocation.
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*
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* ```ts
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* Deno.env.set("TEST_VAR", "A");
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* const myEnv = Deno.env.toObject();
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* console.log(myEnv.SHELL);
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* Deno.env.set("TEST_VAR", "B");
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* console.log(myEnv.TEST_VAR); // outputs "A"
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* ```
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*
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* Requires `allow-env` permission. */
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toObject(): { [index: string]: string };
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};
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/**
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* Returns the path to the current deno executable.
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*
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* ```ts
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* console.log(Deno.execPath()); // e.g. "/home/alice/.local/bin/deno"
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* ```
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*
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* Requires `allow-read` permission.
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*/
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export function execPath(): string;
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/**
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* Change the current working directory to the specified path.
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*
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* ```ts
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* Deno.chdir("/home/userA");
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* Deno.chdir("../userB");
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* Deno.chdir("C:\\Program Files (x86)\\Java");
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* ```
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*
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* Throws `Deno.errors.NotFound` if directory not found.
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* Throws `Deno.errors.PermissionDenied` if the user does not have access
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* rights
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*
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* Requires --allow-read.
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*/
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export function chdir(directory: string | URL): void;
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/**
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* Return a string representing the current working directory.
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*
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* If the current directory can be reached via multiple paths (due to symbolic
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* links), `cwd()` may return any one of them.
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*
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* ```ts
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* const currentWorkingDirectory = Deno.cwd();
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* ```
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*
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* Throws `Deno.errors.NotFound` if directory not available.
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*
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* Requires --allow-read
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*/
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export function cwd(): string;
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/**
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* Synchronously creates `newpath` as a hard link to `oldpath`.
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*
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* ```ts
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* Deno.linkSync("old/name", "new/name");
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* ```
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*
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* Requires `allow-read` and `allow-write` permissions. */
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export function linkSync(oldpath: string, newpath: string): void;
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/**
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* Creates `newpath` as a hard link to `oldpath`.
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*
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* ```ts
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* await Deno.link("old/name", "new/name");
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* ```
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*
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* Requires `allow-read` and `allow-write` permissions. */
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export function link(oldpath: string, newpath: string): Promise<void>;
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export enum SeekMode {
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Start = 0,
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Current = 1,
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End = 2,
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}
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export interface Reader {
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/** Reads up to `p.byteLength` bytes into `p`. It resolves to the number of
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* bytes read (`0` < `n` <= `p.byteLength`) and rejects if any error
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* encountered. Even if `read()` resolves to `n` < `p.byteLength`, it may
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* use all of `p` as scratch space during the call. If some data is
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* available but not `p.byteLength` bytes, `read()` conventionally resolves
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* to what is available instead of waiting for more.
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*
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* When `read()` encounters end-of-file condition, it resolves to EOF
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* (`null`).
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*
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* When `read()` encounters an error, it rejects with an error.
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*
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* Callers should always process the `n` > `0` bytes returned before
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* considering the EOF (`null`). Doing so correctly handles I/O errors that
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* happen after reading some bytes and also both of the allowed EOF
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* behaviors.
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*
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* Implementations should not retain a reference to `p`.
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*
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* Use iter() from https://deno.land/std/io/util.ts to turn a Reader into an
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* AsyncIterator.
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*/
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read(p: Uint8Array): Promise<number | null>;
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}
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export interface ReaderSync {
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/** Reads up to `p.byteLength` bytes into `p`. It resolves to the number
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* of bytes read (`0` < `n` <= `p.byteLength`) and rejects if any error
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* encountered. Even if `readSync()` returns `n` < `p.byteLength`, it may use
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* all of `p` as scratch space during the call. If some data is available
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* but not `p.byteLength` bytes, `readSync()` conventionally returns what is
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* available instead of waiting for more.
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*
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* When `readSync()` encounters end-of-file condition, it returns EOF
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* (`null`).
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*
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* When `readSync()` encounters an error, it throws with an error.
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*
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* Callers should always process the `n` > `0` bytes returned before
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* considering the EOF (`null`). Doing so correctly handles I/O errors that happen
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* after reading some bytes and also both of the allowed EOF behaviors.
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*
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* Implementations should not retain a reference to `p`.
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*
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* Use iterSync() from https://deno.land/std/io/util.ts to turn a ReaderSync
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* into an Iterator.
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*/
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readSync(p: Uint8Array): number | null;
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}
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export interface Writer {
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/** Writes `p.byteLength` bytes from `p` to the underlying data stream. It
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* resolves to the number of bytes written from `p` (`0` <= `n` <=
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* `p.byteLength`) or reject with the error encountered that caused the
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* write to stop early. `write()` must reject with a non-null error if
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* would resolve to `n` < `p.byteLength`. `write()` must not modify the
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* slice data, even temporarily.
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*
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* Implementations should not retain a reference to `p`.
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*/
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write(p: Uint8Array): Promise<number>;
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}
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export interface WriterSync {
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/** Writes `p.byteLength` bytes from `p` to the underlying data
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* stream. It returns the number of bytes written from `p` (`0` <= `n`
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* <= `p.byteLength`) and any error encountered that caused the write to
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* stop early. `writeSync()` must throw a non-null error if it returns `n` <
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* `p.byteLength`. `writeSync()` must not modify the slice data, even
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* temporarily.
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*
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* Implementations should not retain a reference to `p`.
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*/
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writeSync(p: Uint8Array): number;
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}
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export interface Closer {
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close(): void;
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}
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export interface Seeker {
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/** Seek sets the offset for the next `read()` or `write()` to offset,
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* interpreted according to `whence`: `Start` means relative to the
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* start of the file, `Current` means relative to the current offset,
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* and `End` means relative to the end. Seek resolves to the new offset
|
||
* relative to the start of the file.
|
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*
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* Seeking to an offset before the start of the file is an error. Seeking to
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* any positive offset is legal, but the behavior of subsequent I/O
|
||
* operations on the underlying object is implementation-dependent.
|
||
* It returns the number of cursor position.
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*/
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seek(offset: number, whence: SeekMode): Promise<number>;
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}
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export interface SeekerSync {
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||
/** Seek sets the offset for the next `readSync()` or `writeSync()` to
|
||
* offset, interpreted according to `whence`: `Start` means relative
|
||
* to the start of the file, `Current` means relative to the current
|
||
* offset, and `End` means relative to the end.
|
||
*
|
||
* Seeking to an offset before the start of the file is an error. Seeking to
|
||
* any positive offset is legal, but the behavior of subsequent I/O
|
||
* operations on the underlying object is implementation-dependent.
|
||
*/
|
||
seekSync(offset: number, whence: SeekMode): number;
|
||
}
|
||
|
||
/**
|
||
* @deprecated Use `copy` from https://deno.land/std/io/util.ts instead.
|
||
* `Deno.copy` will be removed in Deno 2.0.
|
||
*
|
||
* Copies from `src` to `dst` until either EOF (`null`) is read from `src` or
|
||
* an error occurs. It resolves to the number of bytes copied or rejects with
|
||
* the first error encountered while copying.
|
||
*
|
||
* ```ts
|
||
* const source = await Deno.open("my_file.txt");
|
||
* const bytesCopied1 = await Deno.copy(source, Deno.stdout);
|
||
* const destination = await Deno.create("my_file_2.txt");
|
||
* const bytesCopied2 = await Deno.copy(source, destination);
|
||
* ```
|
||
*
|
||
* @param src The source to copy from
|
||
* @param dst The destination to copy to
|
||
* @param options Can be used to tune size of the buffer. Default size is 32kB
|
||
*/
|
||
export function copy(
|
||
src: Reader,
|
||
dst: Writer,
|
||
options?: {
|
||
bufSize?: number;
|
||
},
|
||
): Promise<number>;
|
||
|
||
/**
|
||
* @deprecated Use iter from https://deno.land/std/io/util.ts instead. Deno.iter will be removed in Deno 2.0.
|
||
*
|
||
* Turns a Reader, `r`, into an async iterator.
|
||
*
|
||
* ```ts
|
||
* let f = await Deno.open("/etc/passwd");
|
||
* for await (const chunk of Deno.iter(f)) {
|
||
* console.log(chunk);
|
||
* }
|
||
* f.close();
|
||
* ```
|
||
*
|
||
* Second argument can be used to tune size of a buffer.
|
||
* Default size of the buffer is 32kB.
|
||
*
|
||
* ```ts
|
||
* let f = await Deno.open("/etc/passwd");
|
||
* const iter = Deno.iter(f, {
|
||
* bufSize: 1024 * 1024
|
||
* });
|
||
* for await (const chunk of iter) {
|
||
* console.log(chunk);
|
||
* }
|
||
* f.close();
|
||
* ```
|
||
*
|
||
* Iterator uses an internal buffer of fixed size for efficiency; it returns
|
||
* a view on that buffer on each iteration. It is therefore caller's
|
||
* responsibility to copy contents of the buffer if needed; otherwise the
|
||
* next iteration will overwrite contents of previously returned chunk.
|
||
*/
|
||
export function iter(
|
||
r: Reader,
|
||
options?: {
|
||
bufSize?: number;
|
||
},
|
||
): AsyncIterableIterator<Uint8Array>;
|
||
|
||
/**
|
||
* @deprecated Use iterSync from https://deno.land/std/io/util.ts instead. Deno.iterSync will be removed in Deno 2.0.
|
||
*
|
||
* Turns a ReaderSync, `r`, into an iterator.
|
||
*
|
||
* ```ts
|
||
* let f = Deno.openSync("/etc/passwd");
|
||
* for (const chunk of Deno.iterSync(f)) {
|
||
* console.log(chunk);
|
||
* }
|
||
* f.close();
|
||
* ```
|
||
*
|
||
* Second argument can be used to tune size of a buffer.
|
||
* Default size of the buffer is 32kB.
|
||
*
|
||
* ```ts
|
||
* let f = await Deno.open("/etc/passwd");
|
||
* const iter = Deno.iterSync(f, {
|
||
* bufSize: 1024 * 1024
|
||
* });
|
||
* for (const chunk of iter) {
|
||
* console.log(chunk);
|
||
* }
|
||
* f.close();
|
||
* ```
|
||
*
|
||
* Iterator uses an internal buffer of fixed size for efficiency; it returns
|
||
* a view on that buffer on each iteration. It is therefore caller's
|
||
* responsibility to copy contents of the buffer if needed; otherwise the
|
||
* next iteration will overwrite contents of previously returned chunk.
|
||
*/
|
||
export function iterSync(
|
||
r: ReaderSync,
|
||
options?: {
|
||
bufSize?: number;
|
||
},
|
||
): IterableIterator<Uint8Array>;
|
||
|
||
/** Synchronously open a file and return an instance of `Deno.File`. The
|
||
* file does not need to previously exist if using the `create` or `createNew`
|
||
* open options. It is the callers responsibility to close the file when finished
|
||
* with it.
|
||
*
|
||
* ```ts
|
||
* const file = Deno.openSync("/foo/bar.txt", { read: true, write: true });
|
||
* // Do work with file
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` and/or `allow-write` permissions depending on options.
|
||
*/
|
||
export function openSync(path: string | URL, options?: OpenOptions): File;
|
||
|
||
/** Open a file and resolve to an instance of `Deno.File`. The
|
||
* file does not need to previously exist if using the `create` or `createNew`
|
||
* open options. It is the callers responsibility to close the file when finished
|
||
* with it.
|
||
*
|
||
* ```ts
|
||
* const file = await Deno.open("/foo/bar.txt", { read: true, write: true });
|
||
* // Do work with file
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` and/or `allow-write` permissions depending on options.
|
||
*/
|
||
export function open(
|
||
path: string | URL,
|
||
options?: OpenOptions,
|
||
): Promise<File>;
|
||
|
||
/** Creates a file if none exists or truncates an existing file and returns
|
||
* an instance of `Deno.File`.
|
||
*
|
||
* ```ts
|
||
* const file = Deno.createSync("/foo/bar.txt");
|
||
* ```
|
||
*
|
||
* Requires `allow-read` and `allow-write` permissions.
|
||
*/
|
||
export function createSync(path: string | URL): File;
|
||
|
||
/** Creates a file if none exists or truncates an existing file and resolves to
|
||
* an instance of `Deno.File`.
|
||
*
|
||
* ```ts
|
||
* const file = await Deno.create("/foo/bar.txt");
|
||
* ```
|
||
*
|
||
* Requires `allow-read` and `allow-write` permissions.
|
||
*/
|
||
export function create(path: string | URL): Promise<File>;
|
||
|
||
/** Synchronously read from a resource ID (`rid`) into an array buffer (`buffer`).
|
||
*
|
||
* Returns either the number of bytes read during the operation or EOF
|
||
* (`null`) if there was nothing more to read.
|
||
*
|
||
* It is possible for a read to successfully return with `0` bytes. This does
|
||
* not indicate EOF.
|
||
*
|
||
* This function is one of the lowest level APIs and most users should not
|
||
* work with this directly, but rather use Deno.readAllSync() instead.
|
||
*
|
||
* **It is not guaranteed that the full buffer will be read in a single call.**
|
||
*
|
||
* ```ts
|
||
* // if "/foo/bar.txt" contains the text "hello world":
|
||
* const file = Deno.openSync("/foo/bar.txt");
|
||
* const buf = new Uint8Array(100);
|
||
* const numberOfBytesRead = Deno.readSync(file.rid, buf); // 11 bytes
|
||
* const text = new TextDecoder().decode(buf); // "hello world"
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*/
|
||
export function readSync(rid: number, buffer: Uint8Array): number | null;
|
||
|
||
/** Read from a resource ID (`rid`) into an array buffer (`buffer`).
|
||
*
|
||
* Resolves to either the number of bytes read during the operation or EOF
|
||
* (`null`) if there was nothing more to read.
|
||
*
|
||
* It is possible for a read to successfully return with `0` bytes. This does
|
||
* not indicate EOF.
|
||
*
|
||
* This function is one of the lowest level APIs and most users should not
|
||
* work with this directly, but rather use Deno.readAll() instead.
|
||
*
|
||
* **It is not guaranteed that the full buffer will be read in a single call.**
|
||
*
|
||
* ```ts
|
||
* // if "/foo/bar.txt" contains the text "hello world":
|
||
* const file = await Deno.open("/foo/bar.txt");
|
||
* const buf = new Uint8Array(100);
|
||
* const numberOfBytesRead = await Deno.read(file.rid, buf); // 11 bytes
|
||
* const text = new TextDecoder().decode(buf); // "hello world"
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*/
|
||
export function read(rid: number, buffer: Uint8Array): Promise<number | null>;
|
||
|
||
/** Synchronously write to the resource ID (`rid`) the contents of the array
|
||
* buffer (`data`).
|
||
*
|
||
* Returns the number of bytes written. This function is one of the lowest
|
||
* level APIs and most users should not work with this directly, but rather use
|
||
* Deno.writeAllSync() instead.
|
||
*
|
||
* **It is not guaranteed that the full buffer will be written in a single
|
||
* call.**
|
||
*
|
||
* ```ts
|
||
* const encoder = new TextEncoder();
|
||
* const data = encoder.encode("Hello world");
|
||
* const file = Deno.openSync("/foo/bar.txt", {write: true});
|
||
* const bytesWritten = Deno.writeSync(file.rid, data); // 11
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*/
|
||
export function writeSync(rid: number, data: Uint8Array): number;
|
||
|
||
/** Write to the resource ID (`rid`) the contents of the array buffer (`data`).
|
||
*
|
||
* Resolves to the number of bytes written. This function is one of the lowest
|
||
* level APIs and most users should not work with this directly, but rather use
|
||
* Deno.writeAll() instead.
|
||
*
|
||
* **It is not guaranteed that the full buffer will be written in a single
|
||
* call.**
|
||
*
|
||
* ```ts
|
||
* const encoder = new TextEncoder();
|
||
* const data = encoder.encode("Hello world");
|
||
* const file = await Deno.open("/foo/bar.txt", { write: true });
|
||
* const bytesWritten = await Deno.write(file.rid, data); // 11
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*/
|
||
export function write(rid: number, data: Uint8Array): Promise<number>;
|
||
|
||
/** Synchronously seek a resource ID (`rid`) to the given `offset` under mode
|
||
* given by `whence`. The new position within the resource (bytes from the
|
||
* start) is returned.
|
||
*
|
||
* ```ts
|
||
* const file = Deno.openSync('hello.txt', {read: true, write: true, truncate: true, create: true});
|
||
* Deno.writeSync(file.rid, new TextEncoder().encode("Hello world"));
|
||
*
|
||
* // advance cursor 6 bytes
|
||
* const cursorPosition = Deno.seekSync(file.rid, 6, Deno.SeekMode.Start);
|
||
* console.log(cursorPosition); // 6
|
||
* const buf = new Uint8Array(100);
|
||
* file.readSync(buf);
|
||
* console.log(new TextDecoder().decode(buf)); // "world"
|
||
* ```
|
||
*
|
||
* The seek modes work as follows:
|
||
*
|
||
* ```ts
|
||
* // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
|
||
* const file = Deno.openSync('hello.txt', {read: true, write: true, truncate: true, create: true});
|
||
* Deno.writeSync(file.rid, new TextEncoder().encode("Hello world"));
|
||
*
|
||
* // Seek 6 bytes from the start of the file
|
||
* console.log(Deno.seekSync(file.rid, 6, Deno.SeekMode.Start)); // "6"
|
||
* // Seek 2 more bytes from the current position
|
||
* console.log(Deno.seekSync(file.rid, 2, Deno.SeekMode.Current)); // "8"
|
||
* // Seek backwards 2 bytes from the end of the file
|
||
* console.log(Deno.seekSync(file.rid, -2, Deno.SeekMode.End)); // "9" (e.g. 11-2)
|
||
* ```
|
||
*/
|
||
export function seekSync(
|
||
rid: number,
|
||
offset: number,
|
||
whence: SeekMode,
|
||
): number;
|
||
|
||
/** Seek a resource ID (`rid`) to the given `offset` under mode given by `whence`.
|
||
* The call resolves to the new position within the resource (bytes from the start).
|
||
*
|
||
* ```ts
|
||
* // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
|
||
* const file = await Deno.open('hello.txt', {read: true, write: true, truncate: true, create: true});
|
||
* await Deno.write(file.rid, new TextEncoder().encode("Hello world"));
|
||
*
|
||
* // advance cursor 6 bytes
|
||
* const cursorPosition = await Deno.seek(file.rid, 6, Deno.SeekMode.Start);
|
||
* console.log(cursorPosition); // 6
|
||
* const buf = new Uint8Array(100);
|
||
* await file.read(buf);
|
||
* console.log(new TextDecoder().decode(buf)); // "world"
|
||
* ```
|
||
*
|
||
* The seek modes work as follows:
|
||
*
|
||
* ```ts
|
||
* // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
|
||
* const file = await Deno.open('hello.txt', {read: true, write: true, truncate: true, create: true});
|
||
* await Deno.write(file.rid, new TextEncoder().encode("Hello world"));
|
||
*
|
||
* // Seek 6 bytes from the start of the file
|
||
* console.log(await Deno.seek(file.rid, 6, Deno.SeekMode.Start)); // "6"
|
||
* // Seek 2 more bytes from the current position
|
||
* console.log(await Deno.seek(file.rid, 2, Deno.SeekMode.Current)); // "8"
|
||
* // Seek backwards 2 bytes from the end of the file
|
||
* console.log(await Deno.seek(file.rid, -2, Deno.SeekMode.End)); // "9" (e.g. 11-2)
|
||
* ```
|
||
*/
|
||
export function seek(
|
||
rid: number,
|
||
offset: number,
|
||
whence: SeekMode,
|
||
): Promise<number>;
|
||
|
||
/**
|
||
* Synchronously flushes any pending data and metadata operations of the given file stream to disk.
|
||
* ```ts
|
||
* const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
|
||
* Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
|
||
* Deno.ftruncateSync(file.rid, 1);
|
||
* Deno.fsyncSync(file.rid);
|
||
* console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // H
|
||
* ```
|
||
*/
|
||
export function fsyncSync(rid: number): void;
|
||
|
||
/**
|
||
* Flushes any pending data and metadata operations of the given file stream to disk.
|
||
* ```ts
|
||
* const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
|
||
* await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
|
||
* await Deno.ftruncate(file.rid, 1);
|
||
* await Deno.fsync(file.rid);
|
||
* console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // H
|
||
* ```
|
||
*/
|
||
export function fsync(rid: number): Promise<void>;
|
||
|
||
/*
|
||
* Synchronously flushes any pending data operations of the given file stream to disk.
|
||
* ```ts
|
||
* const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
|
||
* Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
|
||
* Deno.fdatasyncSync(file.rid);
|
||
* console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // Hello World
|
||
* ```
|
||
*/
|
||
export function fdatasyncSync(rid: number): void;
|
||
|
||
/**
|
||
* Flushes any pending data operations of the given file stream to disk.
|
||
* ```ts
|
||
* const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
|
||
* await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
|
||
* await Deno.fdatasync(file.rid);
|
||
* console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // Hello World
|
||
* ```
|
||
*/
|
||
export function fdatasync(rid: number): Promise<void>;
|
||
|
||
/** Close the given resource ID (rid) which has been previously opened, such
|
||
* as via opening or creating a file. Closing a file when you are finished
|
||
* with it is important to avoid leaking resources.
|
||
*
|
||
* ```ts
|
||
* const file = await Deno.open("my_file.txt");
|
||
* // do work with "file" object
|
||
* Deno.close(file.rid);
|
||
* ````
|
||
*/
|
||
export function close(rid: number): void;
|
||
|
||
/** The Deno abstraction for reading and writing files. */
|
||
export class File
|
||
implements
|
||
Reader,
|
||
ReaderSync,
|
||
Writer,
|
||
WriterSync,
|
||
Seeker,
|
||
SeekerSync,
|
||
Closer {
|
||
readonly rid: number;
|
||
constructor(rid: number);
|
||
write(p: Uint8Array): Promise<number>;
|
||
writeSync(p: Uint8Array): number;
|
||
truncate(len?: number): Promise<void>;
|
||
truncateSync(len?: number): void;
|
||
read(p: Uint8Array): Promise<number | null>;
|
||
readSync(p: Uint8Array): number | null;
|
||
seek(offset: number, whence: SeekMode): Promise<number>;
|
||
seekSync(offset: number, whence: SeekMode): number;
|
||
stat(): Promise<FileInfo>;
|
||
statSync(): FileInfo;
|
||
close(): void;
|
||
}
|
||
|
||
/** A handle for `stdin`. */
|
||
export const stdin: Reader & ReaderSync & Closer & { readonly rid: number };
|
||
/** A handle for `stdout`. */
|
||
export const stdout: Writer & WriterSync & Closer & { readonly rid: number };
|
||
/** A handle for `stderr`. */
|
||
export const stderr: Writer & WriterSync & Closer & { readonly rid: number };
|
||
|
||
export interface OpenOptions {
|
||
/** Sets the option for read access. This option, when `true`, means that the
|
||
* file should be read-able if opened. */
|
||
read?: boolean;
|
||
/** Sets the option for write access. This option, when `true`, means that
|
||
* the file should be write-able if opened. If the file already exists,
|
||
* any write calls on it will overwrite its contents, by default without
|
||
* truncating it. */
|
||
write?: boolean;
|
||
/** Sets the option for the append mode. This option, when `true`, means that
|
||
* writes will append to a file instead of overwriting previous contents.
|
||
* Note that setting `{ write: true, append: true }` has the same effect as
|
||
* setting only `{ append: true }`. */
|
||
append?: boolean;
|
||
/** Sets the option for truncating a previous file. If a file is
|
||
* successfully opened with this option set it will truncate the file to `0`
|
||
* size if it already exists. The file must be opened with write access
|
||
* for truncate to work. */
|
||
truncate?: boolean;
|
||
/** Sets the option to allow creating a new file, if one doesn't already
|
||
* exist at the specified path. Requires write or append access to be
|
||
* used. */
|
||
create?: boolean;
|
||
/** Defaults to `false`. If set to `true`, no file, directory, or symlink is
|
||
* allowed to exist at the target location. Requires write or append
|
||
* access to be used. When createNew is set to `true`, create and truncate
|
||
* are ignored. */
|
||
createNew?: boolean;
|
||
/** Permissions to use if creating the file (defaults to `0o666`, before
|
||
* the process's umask).
|
||
* Ignored on Windows. */
|
||
mode?: number;
|
||
}
|
||
|
||
export interface ReadFileOptions {
|
||
/**
|
||
* An abort signal to allow cancellation of the file read operation.
|
||
* If the signal becomes aborted the readFile operation will be stopped
|
||
* and the promise returned will be rejected with an AbortError.
|
||
*/
|
||
signal?: AbortSignal;
|
||
}
|
||
|
||
/**
|
||
* Check if a given resource id (`rid`) is a TTY.
|
||
*
|
||
* ```ts
|
||
* // This example is system and context specific
|
||
* const nonTTYRid = Deno.openSync("my_file.txt").rid;
|
||
* const ttyRid = Deno.openSync("/dev/tty6").rid;
|
||
* console.log(Deno.isatty(nonTTYRid)); // false
|
||
* console.log(Deno.isatty(ttyRid)); // true
|
||
* Deno.close(nonTTYRid);
|
||
* Deno.close(ttyRid);
|
||
* ```
|
||
*/
|
||
export function isatty(rid: number): boolean;
|
||
|
||
/**
|
||
* @deprecated Use Buffer from https://deno.land/std/io/buffer.ts instead. Deno.Buffer will be removed in Deno 2.0.
|
||
*
|
||
* A variable-sized buffer of bytes with `read()` and `write()` methods.
|
||
*
|
||
* Deno.Buffer is almost always used with some I/O like files and sockets. It
|
||
* allows one to buffer up a download from a socket. Buffer grows and shrinks
|
||
* as necessary.
|
||
*
|
||
* Deno.Buffer is NOT the same thing as Node's Buffer. Node's Buffer was
|
||
* created in 2009 before JavaScript had the concept of ArrayBuffers. It's
|
||
* simply a non-standard ArrayBuffer.
|
||
*
|
||
* ArrayBuffer is a fixed memory allocation. Deno.Buffer is implemented on top
|
||
* of ArrayBuffer.
|
||
*
|
||
* Based on [Go Buffer](https://golang.org/pkg/bytes/#Buffer). */
|
||
export class Buffer implements Reader, ReaderSync, Writer, WriterSync {
|
||
constructor(ab?: ArrayBuffer);
|
||
/** Returns a slice holding the unread portion of the buffer.
|
||
*
|
||
* The slice is valid for use only until the next buffer modification (that
|
||
* is, only until the next call to a method like `read()`, `write()`,
|
||
* `reset()`, or `truncate()`). If `options.copy` is false the slice aliases the buffer content at
|
||
* least until the next buffer modification, so immediate changes to the
|
||
* slice will affect the result of future reads.
|
||
* @param options Defaults to `{ copy: true }`
|
||
*/
|
||
bytes(options?: { copy?: boolean }): Uint8Array;
|
||
/** Returns whether the unread portion of the buffer is empty. */
|
||
empty(): boolean;
|
||
/** A read only number of bytes of the unread portion of the buffer. */
|
||
readonly length: number;
|
||
/** The read only capacity of the buffer's underlying byte slice, that is,
|
||
* the total space allocated for the buffer's data. */
|
||
readonly capacity: number;
|
||
/** Discards all but the first `n` unread bytes from the buffer but
|
||
* continues to use the same allocated storage. It throws if `n` is
|
||
* negative or greater than the length of the buffer. */
|
||
truncate(n: number): void;
|
||
/** Resets the buffer to be empty, but it retains the underlying storage for
|
||
* use by future writes. `.reset()` is the same as `.truncate(0)`. */
|
||
reset(): void;
|
||
/** Reads the next `p.length` bytes from the buffer or until the buffer is
|
||
* drained. Returns the number of bytes read. If the buffer has no data to
|
||
* return, the return is EOF (`null`). */
|
||
readSync(p: Uint8Array): number | null;
|
||
/** Reads the next `p.length` bytes from the buffer or until the buffer is
|
||
* drained. Resolves to the number of bytes read. If the buffer has no
|
||
* data to return, resolves to EOF (`null`).
|
||
*
|
||
* NOTE: This methods reads bytes synchronously; it's provided for
|
||
* compatibility with `Reader` interfaces.
|
||
*/
|
||
read(p: Uint8Array): Promise<number | null>;
|
||
writeSync(p: Uint8Array): number;
|
||
/** NOTE: This methods writes bytes synchronously; it's provided for
|
||
* compatibility with `Writer` interface. */
|
||
write(p: Uint8Array): Promise<number>;
|
||
/** Grows the buffer's capacity, if necessary, to guarantee space for
|
||
* another `n` bytes. After `.grow(n)`, at least `n` bytes can be written to
|
||
* the buffer without another allocation. If `n` is negative, `.grow()` will
|
||
* throw. If the buffer can't grow it will throw an error.
|
||
*
|
||
* Based on Go Lang's
|
||
* [Buffer.Grow](https://golang.org/pkg/bytes/#Buffer.Grow). */
|
||
grow(n: number): void;
|
||
/** Reads data from `r` until EOF (`null`) and appends it to the buffer,
|
||
* growing the buffer as needed. It resolves to the number of bytes read.
|
||
* If the buffer becomes too large, `.readFrom()` will reject with an error.
|
||
*
|
||
* Based on Go Lang's
|
||
* [Buffer.ReadFrom](https://golang.org/pkg/bytes/#Buffer.ReadFrom). */
|
||
readFrom(r: Reader): Promise<number>;
|
||
/** Reads data from `r` until EOF (`null`) and appends it to the buffer,
|
||
* growing the buffer as needed. It returns the number of bytes read. If the
|
||
* buffer becomes too large, `.readFromSync()` will throw an error.
|
||
*
|
||
* Based on Go Lang's
|
||
* [Buffer.ReadFrom](https://golang.org/pkg/bytes/#Buffer.ReadFrom). */
|
||
readFromSync(r: ReaderSync): number;
|
||
}
|
||
|
||
/**
|
||
* @deprecated Use readAll from https://deno.land/std/io/util.ts instead. Deno.readAll will be removed in Deno 2.0.
|
||
*
|
||
* Read Reader `r` until EOF (`null`) and resolve to the content as
|
||
* Uint8Array`.
|
||
*
|
||
* ```ts
|
||
* // Example from stdin
|
||
* const stdinContent = await Deno.readAll(Deno.stdin);
|
||
*
|
||
* // Example from file
|
||
* const file = await Deno.open("my_file.txt", {read: true});
|
||
* const myFileContent = await Deno.readAll(file);
|
||
* Deno.close(file.rid);
|
||
*
|
||
* // Example from buffer
|
||
* const myData = new Uint8Array(100);
|
||
* // ... fill myData array with data
|
||
* const reader = new Deno.Buffer(myData.buffer as ArrayBuffer);
|
||
* const bufferContent = await Deno.readAll(reader);
|
||
* ```
|
||
*/
|
||
export function readAll(r: Reader): Promise<Uint8Array>;
|
||
|
||
/**
|
||
* @deprecated Use readAllSync from https://deno.land/std/io/util.ts instead. Deno.readAllSync will be removed in Deno 2.0.
|
||
*
|
||
* Synchronously reads Reader `r` until EOF (`null`) and returns the content
|
||
* as `Uint8Array`.
|
||
*
|
||
* ```ts
|
||
* // Example from stdin
|
||
* const stdinContent = Deno.readAllSync(Deno.stdin);
|
||
*
|
||
* // Example from file
|
||
* const file = Deno.openSync("my_file.txt", {read: true});
|
||
* const myFileContent = Deno.readAllSync(file);
|
||
* Deno.close(file.rid);
|
||
*
|
||
* // Example from buffer
|
||
* const myData = new Uint8Array(100);
|
||
* // ... fill myData array with data
|
||
* const reader = new Deno.Buffer(myData.buffer as ArrayBuffer);
|
||
* const bufferContent = Deno.readAllSync(reader);
|
||
* ```
|
||
*/
|
||
export function readAllSync(r: ReaderSync): Uint8Array;
|
||
|
||
/**
|
||
* @deprecated Use writeAll from https://deno.land/std/io/util.ts instead. Deno.readAll will be removed in Deno 2.0.
|
||
*
|
||
* Write all the content of the array buffer (`arr`) to the writer (`w`).
|
||
*
|
||
* ```ts
|
||
* // Example writing to stdout
|
||
* const contentBytes = new TextEncoder().encode("Hello World");
|
||
* await Deno.writeAll(Deno.stdout, contentBytes);
|
||
* ```
|
||
*
|
||
* ```ts
|
||
* // Example writing to file
|
||
* const contentBytes = new TextEncoder().encode("Hello World");
|
||
* const file = await Deno.open('test.file', {write: true});
|
||
* await Deno.writeAll(file, contentBytes);
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*
|
||
* ```ts
|
||
* // Example writing to buffer
|
||
* const contentBytes = new TextEncoder().encode("Hello World");
|
||
* const writer = new Deno.Buffer();
|
||
* await Deno.writeAll(writer, contentBytes);
|
||
* console.log(writer.bytes().length); // 11
|
||
* ```
|
||
*/
|
||
export function writeAll(w: Writer, arr: Uint8Array): Promise<void>;
|
||
|
||
/**
|
||
* @deprecated Use writeAllSync from https://deno.land/std/io/util.ts instead. Deno.writeAllSync will be removed in Deno 2.0.
|
||
*
|
||
* Synchronously write all the content of the array buffer (`arr`) to the
|
||
* writer (`w`).
|
||
*
|
||
* ```ts
|
||
* // Example writing to stdout
|
||
* const contentBytes = new TextEncoder().encode("Hello World");
|
||
* Deno.writeAllSync(Deno.stdout, contentBytes);
|
||
* ```
|
||
*
|
||
* ```ts
|
||
* // Example writing to file
|
||
* const contentBytes = new TextEncoder().encode("Hello World");
|
||
* const file = Deno.openSync('test.file', {write: true});
|
||
* Deno.writeAllSync(file, contentBytes);
|
||
* Deno.close(file.rid);
|
||
* ```
|
||
*
|
||
* ```ts
|
||
* // Example writing to buffer
|
||
* const contentBytes = new TextEncoder().encode("Hello World");
|
||
* const writer = new Deno.Buffer();
|
||
* Deno.writeAllSync(writer, contentBytes);
|
||
* console.log(writer.bytes().length); // 11
|
||
* ```
|
||
*/
|
||
export function writeAllSync(w: WriterSync, arr: Uint8Array): void;
|
||
|
||
export interface MkdirOptions {
|
||
/** Defaults to `false`. If set to `true`, means that any intermediate
|
||
* directories will also be created (as with the shell command `mkdir -p`).
|
||
* Intermediate directories are created with the same permissions.
|
||
* When recursive is set to `true`, succeeds silently (without changing any
|
||
* permissions) if a directory already exists at the path, or if the path
|
||
* is a symlink to an existing directory. */
|
||
recursive?: boolean;
|
||
/** Permissions to use when creating the directory (defaults to `0o777`,
|
||
* before the process's umask).
|
||
* Ignored on Windows. */
|
||
mode?: number;
|
||
}
|
||
|
||
/** Synchronously creates a new directory with the specified path.
|
||
*
|
||
* ```ts
|
||
* Deno.mkdirSync("new_dir");
|
||
* Deno.mkdirSync("nested/directories", { recursive: true });
|
||
* Deno.mkdirSync("restricted_access_dir", { mode: 0o700 });
|
||
* ```
|
||
*
|
||
* Defaults to throwing error if the directory already exists.
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function mkdirSync(path: string | URL, options?: MkdirOptions): void;
|
||
|
||
/** Creates a new directory with the specified path.
|
||
*
|
||
* ```ts
|
||
* await Deno.mkdir("new_dir");
|
||
* await Deno.mkdir("nested/directories", { recursive: true });
|
||
* await Deno.mkdir("restricted_access_dir", { mode: 0o700 });
|
||
* ```
|
||
*
|
||
* Defaults to throwing error if the directory already exists.
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function mkdir(
|
||
path: string | URL,
|
||
options?: MkdirOptions,
|
||
): Promise<void>;
|
||
|
||
export interface MakeTempOptions {
|
||
/** Directory where the temporary directory should be created (defaults to
|
||
* the env variable TMPDIR, or the system's default, usually /tmp).
|
||
*
|
||
* Note that if the passed `dir` is relative, the path returned by
|
||
* makeTempFile() and makeTempDir() will also be relative. Be mindful of
|
||
* this when changing working directory. */
|
||
dir?: string;
|
||
/** String that should precede the random portion of the temporary
|
||
* directory's name. */
|
||
prefix?: string;
|
||
/** String that should follow the random portion of the temporary
|
||
* directory's name. */
|
||
suffix?: string;
|
||
}
|
||
|
||
/** Synchronously creates a new temporary directory in the default directory
|
||
* for temporary files, unless `dir` is specified. Other optional options
|
||
* include prefixing and suffixing the directory name with `prefix` and
|
||
* `suffix` respectively.
|
||
*
|
||
* The full path to the newly created directory is returned.
|
||
*
|
||
* Multiple programs calling this function simultaneously will create different
|
||
* directories. It is the caller's responsibility to remove the directory when
|
||
* no longer needed.
|
||
*
|
||
* ```ts
|
||
* const tempDirName0 = Deno.makeTempDirSync(); // e.g. /tmp/2894ea76
|
||
* const tempDirName1 = Deno.makeTempDirSync({ prefix: 'my_temp' }); // e.g. /tmp/my_temp339c944d
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
// TODO(ry) Doesn't check permissions.
|
||
export function makeTempDirSync(options?: MakeTempOptions): string;
|
||
|
||
/** Creates a new temporary directory in the default directory for temporary
|
||
* files, unless `dir` is specified. Other optional options include
|
||
* prefixing and suffixing the directory name with `prefix` and `suffix`
|
||
* respectively.
|
||
*
|
||
* This call resolves to the full path to the newly created directory.
|
||
*
|
||
* Multiple programs calling this function simultaneously will create different
|
||
* directories. It is the caller's responsibility to remove the directory when
|
||
* no longer needed.
|
||
*
|
||
* ```ts
|
||
* const tempDirName0 = await Deno.makeTempDir(); // e.g. /tmp/2894ea76
|
||
* const tempDirName1 = await Deno.makeTempDir({ prefix: 'my_temp' }); // e.g. /tmp/my_temp339c944d
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
// TODO(ry) Doesn't check permissions.
|
||
export function makeTempDir(options?: MakeTempOptions): Promise<string>;
|
||
|
||
/** Synchronously creates a new temporary file in the default directory for
|
||
* temporary files, unless `dir` is specified.
|
||
* Other optional options include prefixing and suffixing the directory name
|
||
* with `prefix` and `suffix` respectively.
|
||
*
|
||
* The full path to the newly created file is returned.
|
||
*
|
||
* Multiple programs calling this function simultaneously will create different
|
||
* files. It is the caller's responsibility to remove the file when no longer
|
||
* needed.
|
||
*
|
||
* ```ts
|
||
* const tempFileName0 = Deno.makeTempFileSync(); // e.g. /tmp/419e0bf2
|
||
* const tempFileName1 = Deno.makeTempFileSync({ prefix: 'my_temp' }); // e.g. /tmp/my_temp754d3098
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function makeTempFileSync(options?: MakeTempOptions): string;
|
||
|
||
/** Creates a new temporary file in the default directory for temporary
|
||
* files, unless `dir` is specified. Other
|
||
* optional options include prefixing and suffixing the directory name with
|
||
* `prefix` and `suffix` respectively.
|
||
*
|
||
* This call resolves to the full path to the newly created file.
|
||
*
|
||
* Multiple programs calling this function simultaneously will create different
|
||
* files. It is the caller's responsibility to remove the file when no longer
|
||
* needed.
|
||
*
|
||
* ```ts
|
||
* const tmpFileName0 = await Deno.makeTempFile(); // e.g. /tmp/419e0bf2
|
||
* const tmpFileName1 = await Deno.makeTempFile({ prefix: 'my_temp' }); // e.g. /tmp/my_temp754d3098
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function makeTempFile(options?: MakeTempOptions): Promise<string>;
|
||
|
||
/** Synchronously changes the permission of a specific file/directory of
|
||
* specified path. Ignores the process's umask.
|
||
*
|
||
* ```ts
|
||
* Deno.chmodSync("/path/to/file", 0o666);
|
||
* ```
|
||
*
|
||
* For a full description, see [chmod](#Deno.chmod)
|
||
*
|
||
* NOTE: This API currently throws on Windows
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function chmodSync(path: string | URL, mode: number): void;
|
||
|
||
/** Changes the permission of a specific file/directory of specified path.
|
||
* Ignores the process's umask.
|
||
*
|
||
* ```ts
|
||
* await Deno.chmod("/path/to/file", 0o666);
|
||
* ```
|
||
*
|
||
* The mode is a sequence of 3 octal numbers. The first/left-most number
|
||
* specifies the permissions for the owner. The second number specifies the
|
||
* permissions for the group. The last/right-most number specifies the
|
||
* permissions for others. For example, with a mode of 0o764, the owner (7) can
|
||
* read/write/execute, the group (6) can read/write and everyone else (4) can
|
||
* read only.
|
||
*
|
||
* | Number | Description |
|
||
* | ------ | ----------- |
|
||
* | 7 | read, write, and execute |
|
||
* | 6 | read and write |
|
||
* | 5 | read and execute |
|
||
* | 4 | read only |
|
||
* | 3 | write and execute |
|
||
* | 2 | write only |
|
||
* | 1 | execute only |
|
||
* | 0 | no permission |
|
||
*
|
||
* NOTE: This API currently throws on Windows
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function chmod(path: string | URL, mode: number): Promise<void>;
|
||
|
||
/** Synchronously change owner of a regular file or directory. This functionality
|
||
* is not available on Windows.
|
||
*
|
||
* ```ts
|
||
* Deno.chownSync("myFile.txt", 1000, 1002);
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission.
|
||
*
|
||
* Throws Error (not implemented) if executed on Windows
|
||
*
|
||
* @param path path to the file
|
||
* @param uid user id (UID) of the new owner, or `null` for no change
|
||
* @param gid group id (GID) of the new owner, or `null` for no change
|
||
*/
|
||
export function chownSync(
|
||
path: string | URL,
|
||
uid: number | null,
|
||
gid: number | null,
|
||
): void;
|
||
|
||
/** Change owner of a regular file or directory. This functionality
|
||
* is not available on Windows.
|
||
*
|
||
* ```ts
|
||
* await Deno.chown("myFile.txt", 1000, 1002);
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission.
|
||
*
|
||
* Throws Error (not implemented) if executed on Windows
|
||
*
|
||
* @param path path to the file
|
||
* @param uid user id (UID) of the new owner, or `null` for no change
|
||
* @param gid group id (GID) of the new owner, or `null` for no change
|
||
*/
|
||
export function chown(
|
||
path: string | URL,
|
||
uid: number | null,
|
||
gid: number | null,
|
||
): Promise<void>;
|
||
|
||
export interface RemoveOptions {
|
||
/** Defaults to `false`. If set to `true`, path will be removed even if
|
||
* it's a non-empty directory. */
|
||
recursive?: boolean;
|
||
}
|
||
|
||
/** Synchronously removes the named file or directory.
|
||
*
|
||
* ```ts
|
||
* Deno.removeSync("/path/to/empty_dir/or/file");
|
||
* Deno.removeSync("/path/to/populated_dir/or/file", { recursive: true });
|
||
* ```
|
||
*
|
||
* Throws error if permission denied, path not found, or path is a non-empty
|
||
* directory and the `recursive` option isn't set to `true`.
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function removeSync(path: string | URL, options?: RemoveOptions): void;
|
||
|
||
/** Removes the named file or directory.
|
||
*
|
||
* ```ts
|
||
* await Deno.remove("/path/to/empty_dir/or/file");
|
||
* await Deno.remove("/path/to/populated_dir/or/file", { recursive: true });
|
||
* ```
|
||
*
|
||
* Throws error if permission denied, path not found, or path is a non-empty
|
||
* directory and the `recursive` option isn't set to `true`.
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function remove(
|
||
path: string | URL,
|
||
options?: RemoveOptions,
|
||
): Promise<void>;
|
||
|
||
/** Synchronously renames (moves) `oldpath` to `newpath`. Paths may be files or
|
||
* directories. If `newpath` already exists and is not a directory,
|
||
* `renameSync()` replaces it. OS-specific restrictions may apply when
|
||
* `oldpath` and `newpath` are in different directories.
|
||
*
|
||
* ```ts
|
||
* Deno.renameSync("old/path", "new/path");
|
||
* ```
|
||
*
|
||
* On Unix, this operation does not follow symlinks at either path.
|
||
*
|
||
* It varies between platforms when the operation throws errors, and if so what
|
||
* they are. It's always an error to rename anything to a non-empty directory.
|
||
*
|
||
* Requires `allow-read` and `allow-write` permissions. */
|
||
export function renameSync(
|
||
oldpath: string | URL,
|
||
newpath: string | URL,
|
||
): void;
|
||
|
||
/** Renames (moves) `oldpath` to `newpath`. Paths may be files or directories.
|
||
* If `newpath` already exists and is not a directory, `rename()` replaces it.
|
||
* OS-specific restrictions may apply when `oldpath` and `newpath` are in
|
||
* different directories.
|
||
*
|
||
* ```ts
|
||
* await Deno.rename("old/path", "new/path");
|
||
* ```
|
||
*
|
||
* On Unix, this operation does not follow symlinks at either path.
|
||
*
|
||
* It varies between platforms when the operation throws errors, and if so what
|
||
* they are. It's always an error to rename anything to a non-empty directory.
|
||
*
|
||
* Requires `allow-read` and `allow-write` permission. */
|
||
export function rename(
|
||
oldpath: string | URL,
|
||
newpath: string | URL,
|
||
): Promise<void>;
|
||
|
||
/** Synchronously reads and returns the entire contents of a file as utf8
|
||
* encoded string. Reading a directory throws an error.
|
||
*
|
||
* ```ts
|
||
* const data = Deno.readTextFileSync("hello.txt");
|
||
* console.log(data);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readTextFileSync(path: string | URL): string;
|
||
|
||
/** Asynchronously reads and returns the entire contents of a file as utf8
|
||
* encoded string. Reading a directory throws an error.
|
||
*
|
||
* ```ts
|
||
* const data = await Deno.readTextFile("hello.txt");
|
||
* console.log(data);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readTextFile(
|
||
path: string | URL,
|
||
options?: ReadFileOptions,
|
||
): Promise<string>;
|
||
|
||
/** Synchronously reads and returns the entire contents of a file as an array
|
||
* of bytes. `TextDecoder` can be used to transform the bytes to string if
|
||
* required. Reading a directory returns an empty data array.
|
||
*
|
||
* ```ts
|
||
* const decoder = new TextDecoder("utf-8");
|
||
* const data = Deno.readFileSync("hello.txt");
|
||
* console.log(decoder.decode(data));
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readFileSync(path: string | URL): Uint8Array;
|
||
|
||
/** Reads and resolves to the entire contents of a file as an array of bytes.
|
||
* `TextDecoder` can be used to transform the bytes to string if required.
|
||
* Reading a directory returns an empty data array.
|
||
*
|
||
* ```ts
|
||
* const decoder = new TextDecoder("utf-8");
|
||
* const data = await Deno.readFile("hello.txt");
|
||
* console.log(decoder.decode(data));
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readFile(
|
||
path: string | URL,
|
||
options?: ReadFileOptions,
|
||
): Promise<Uint8Array>;
|
||
|
||
/** A FileInfo describes a file and is returned by `stat`, `lstat`,
|
||
* `statSync`, `lstatSync`. */
|
||
export interface FileInfo {
|
||
/** True if this is info for a regular file. Mutually exclusive to
|
||
* `FileInfo.isDirectory` and `FileInfo.isSymlink`. */
|
||
isFile: boolean;
|
||
/** True if this is info for a regular directory. Mutually exclusive to
|
||
* `FileInfo.isFile` and `FileInfo.isSymlink`. */
|
||
isDirectory: boolean;
|
||
/** True if this is info for a symlink. Mutually exclusive to
|
||
* `FileInfo.isFile` and `FileInfo.isDirectory`. */
|
||
isSymlink: boolean;
|
||
/** The size of the file, in bytes. */
|
||
size: number;
|
||
/** The last modification time of the file. This corresponds to the `mtime`
|
||
* field from `stat` on Linux/Mac OS and `ftLastWriteTime` on Windows. This
|
||
* may not be available on all platforms. */
|
||
mtime: Date | null;
|
||
/** The last access time of the file. This corresponds to the `atime`
|
||
* field from `stat` on Unix and `ftLastAccessTime` on Windows. This may not
|
||
* be available on all platforms. */
|
||
atime: Date | null;
|
||
/** The creation time of the file. This corresponds to the `birthtime`
|
||
* field from `stat` on Mac/BSD and `ftCreationTime` on Windows. This may
|
||
* not be available on all platforms. */
|
||
birthtime: Date | null;
|
||
/** ID of the device containing the file.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
dev: number | null;
|
||
/** Inode number.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
ino: number | null;
|
||
/** **UNSTABLE**: Match behavior with Go on Windows for `mode`.
|
||
*
|
||
* The underlying raw `st_mode` bits that contain the standard Unix
|
||
* permissions for this file/directory. */
|
||
mode: number | null;
|
||
/** Number of hard links pointing to this file.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
nlink: number | null;
|
||
/** User ID of the owner of this file.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
uid: number | null;
|
||
/** Group ID of the owner of this file.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
gid: number | null;
|
||
/** Device ID of this file.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
rdev: number | null;
|
||
/** Blocksize for filesystem I/O.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
blksize: number | null;
|
||
/** Number of blocks allocated to the file, in 512-byte units.
|
||
*
|
||
* _Linux/Mac OS only._ */
|
||
blocks: number | null;
|
||
}
|
||
|
||
/** Returns absolute normalized path, with symbolic links resolved.
|
||
*
|
||
* ```ts
|
||
* // e.g. given /home/alice/file.txt and current directory /home/alice
|
||
* Deno.symlinkSync("file.txt", "symlink_file.txt");
|
||
* const realPath = Deno.realPathSync("./file.txt");
|
||
* const realSymLinkPath = Deno.realPathSync("./symlink_file.txt");
|
||
* console.log(realPath); // outputs "/home/alice/file.txt"
|
||
* console.log(realSymLinkPath); // outputs "/home/alice/file.txt"
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission for the target path.
|
||
* Also requires `allow-read` permission for the CWD if the target path is
|
||
* relative. */
|
||
export function realPathSync(path: string | URL): string;
|
||
|
||
/** Resolves to the absolute normalized path, with symbolic links resolved.
|
||
*
|
||
* ```ts
|
||
* // e.g. given /home/alice/file.txt and current directory /home/alice
|
||
* await Deno.symlink("file.txt", "symlink_file.txt");
|
||
* const realPath = await Deno.realPath("./file.txt");
|
||
* const realSymLinkPath = await Deno.realPath("./symlink_file.txt");
|
||
* console.log(realPath); // outputs "/home/alice/file.txt"
|
||
* console.log(realSymLinkPath); // outputs "/home/alice/file.txt"
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission for the target path.
|
||
* Also requires `allow-read` permission for the CWD if the target path is
|
||
* relative. */
|
||
export function realPath(path: string | URL): Promise<string>;
|
||
|
||
export interface DirEntry {
|
||
name: string;
|
||
isFile: boolean;
|
||
isDirectory: boolean;
|
||
isSymlink: boolean;
|
||
}
|
||
|
||
/** Synchronously reads the directory given by `path` and returns an iterable
|
||
* of `Deno.DirEntry`.
|
||
*
|
||
* ```ts
|
||
* for (const dirEntry of Deno.readDirSync("/")) {
|
||
* console.log(dirEntry.name);
|
||
* }
|
||
* ```
|
||
*
|
||
* Throws error if `path` is not a directory.
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readDirSync(path: string | URL): Iterable<DirEntry>;
|
||
|
||
/** Reads the directory given by `path` and returns an async iterable of
|
||
* `Deno.DirEntry`.
|
||
*
|
||
* ```ts
|
||
* for await (const dirEntry of Deno.readDir("/")) {
|
||
* console.log(dirEntry.name);
|
||
* }
|
||
* ```
|
||
*
|
||
* Throws error if `path` is not a directory.
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readDir(path: string | URL): AsyncIterable<DirEntry>;
|
||
|
||
/** Synchronously copies the contents and permissions of one file to another
|
||
* specified path, by default creating a new file if needed, else overwriting.
|
||
* Fails if target path is a directory or is unwritable.
|
||
*
|
||
* ```ts
|
||
* Deno.copyFileSync("from.txt", "to.txt");
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission on fromPath.
|
||
* Requires `allow-write` permission on toPath. */
|
||
export function copyFileSync(
|
||
fromPath: string | URL,
|
||
toPath: string | URL,
|
||
): void;
|
||
|
||
/** Copies the contents and permissions of one file to another specified path,
|
||
* by default creating a new file if needed, else overwriting. Fails if target
|
||
* path is a directory or is unwritable.
|
||
*
|
||
* ```ts
|
||
* await Deno.copyFile("from.txt", "to.txt");
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission on fromPath.
|
||
* Requires `allow-write` permission on toPath. */
|
||
export function copyFile(
|
||
fromPath: string | URL,
|
||
toPath: string | URL,
|
||
): Promise<void>;
|
||
|
||
/** Returns the full path destination of the named symbolic link.
|
||
*
|
||
* ```ts
|
||
* Deno.symlinkSync("./test.txt", "./test_link.txt");
|
||
* const target = Deno.readLinkSync("./test_link.txt"); // full path of ./test.txt
|
||
* ```
|
||
*
|
||
* Throws TypeError if called with a hard link
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readLinkSync(path: string | URL): string;
|
||
|
||
/** Resolves to the full path destination of the named symbolic link.
|
||
*
|
||
* ```ts
|
||
* await Deno.symlink("./test.txt", "./test_link.txt");
|
||
* const target = await Deno.readLink("./test_link.txt"); // full path of ./test.txt
|
||
* ```
|
||
*
|
||
* Throws TypeError if called with a hard link
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function readLink(path: string | URL): Promise<string>;
|
||
|
||
/** Resolves to a `Deno.FileInfo` for the specified `path`. If `path` is a
|
||
* symlink, information for the symlink will be returned instead of what it
|
||
* points to.
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
* const fileInfo = await Deno.lstat("hello.txt");
|
||
* assert(fileInfo.isFile);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function lstat(path: string | URL): Promise<FileInfo>;
|
||
|
||
/** Synchronously returns a `Deno.FileInfo` for the specified `path`. If
|
||
* `path` is a symlink, information for the symlink will be returned instead of
|
||
* what it points to..
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
* const fileInfo = Deno.lstatSync("hello.txt");
|
||
* assert(fileInfo.isFile);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function lstatSync(path: string | URL): FileInfo;
|
||
|
||
/** Resolves to a `Deno.FileInfo` for the specified `path`. Will always
|
||
* follow symlinks.
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
* const fileInfo = await Deno.stat("hello.txt");
|
||
* assert(fileInfo.isFile);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function stat(path: string | URL): Promise<FileInfo>;
|
||
|
||
/** Synchronously returns a `Deno.FileInfo` for the specified `path`. Will
|
||
* always follow symlinks.
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
* const fileInfo = Deno.statSync("hello.txt");
|
||
* assert(fileInfo.isFile);
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission. */
|
||
export function statSync(path: string | URL): FileInfo;
|
||
|
||
/** Options for writing to a file. */
|
||
export interface WriteFileOptions {
|
||
/** Defaults to `false`. If set to `true`, will append to a file instead of
|
||
* overwriting previous contents. */
|
||
append?: boolean;
|
||
/** Sets the option to allow creating a new file, if one doesn't already
|
||
* exist at the specified path (defaults to `true`). */
|
||
create?: boolean;
|
||
/** Permissions always applied to file. */
|
||
mode?: number;
|
||
/**
|
||
* An abort signal to allow cancellation of the file write operation.
|
||
* If the signal becomes aborted the writeFile operation will be stopped
|
||
* and the promise returned will be rejected with an AbortError.
|
||
*/
|
||
signal?: AbortSignal;
|
||
}
|
||
|
||
/** Synchronously write `data` to the given `path`, by default creating a new
|
||
* file if needed, else overwriting.
|
||
*
|
||
* ```ts
|
||
* const encoder = new TextEncoder();
|
||
* const data = encoder.encode("Hello world\n");
|
||
* Deno.writeFileSync("hello1.txt", data); // overwrite "hello1.txt" or create it
|
||
* Deno.writeFileSync("hello2.txt", data, {create: false}); // only works if "hello2.txt" exists
|
||
* Deno.writeFileSync("hello3.txt", data, {mode: 0o777}); // set permissions on new file
|
||
* Deno.writeFileSync("hello4.txt", data, {append: true}); // add data to the end of the file
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission, and `allow-read` if `options.create` is
|
||
* `false`.
|
||
*/
|
||
export function writeFileSync(
|
||
path: string | URL,
|
||
data: Uint8Array,
|
||
options?: WriteFileOptions,
|
||
): void;
|
||
|
||
/** Write `data` to the given `path`, by default creating a new file if needed,
|
||
* else overwriting.
|
||
*
|
||
* ```ts
|
||
* const encoder = new TextEncoder();
|
||
* const data = encoder.encode("Hello world\n");
|
||
* await Deno.writeFile("hello1.txt", data); // overwrite "hello1.txt" or create it
|
||
* await Deno.writeFile("hello2.txt", data, {create: false}); // only works if "hello2.txt" exists
|
||
* await Deno.writeFile("hello3.txt", data, {mode: 0o777}); // set permissions on new file
|
||
* await Deno.writeFile("hello4.txt", data, {append: true}); // add data to the end of the file
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission, and `allow-read` if `options.create` is `false`.
|
||
*/
|
||
export function writeFile(
|
||
path: string | URL,
|
||
data: Uint8Array,
|
||
options?: WriteFileOptions,
|
||
): Promise<void>;
|
||
|
||
/** Synchronously write string `data` to the given `path`, by default creating a new file if needed,
|
||
* else overwriting.
|
||
*
|
||
* ```ts
|
||
* Deno.writeTextFileSync("hello1.txt", "Hello world\n"); // overwrite "hello1.txt" or create it
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission, and `allow-read` if `options.create` is `false`.
|
||
*/
|
||
export function writeTextFileSync(
|
||
path: string | URL,
|
||
data: string,
|
||
options?: WriteFileOptions,
|
||
): void;
|
||
|
||
/** Asynchronously write string `data` to the given `path`, by default creating a new file if needed,
|
||
* else overwriting.
|
||
*
|
||
* ```ts
|
||
* await Deno.writeTextFile("hello1.txt", "Hello world\n"); // overwrite "hello1.txt" or create it
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission, and `allow-read` if `options.create` is `false`.
|
||
*/
|
||
export function writeTextFile(
|
||
path: string | URL,
|
||
data: string,
|
||
options?: WriteFileOptions,
|
||
): Promise<void>;
|
||
|
||
/** Synchronously truncates or extends the specified file, to reach the
|
||
* specified `len`. If `len` is not specified then the entire file contents
|
||
* are truncated.
|
||
*
|
||
* ```ts
|
||
* // truncate the entire file
|
||
* Deno.truncateSync("my_file.txt");
|
||
*
|
||
* // truncate part of the file
|
||
* const file = Deno.makeTempFileSync();
|
||
* Deno.writeFileSync(file, new TextEncoder().encode("Hello World"));
|
||
* Deno.truncateSync(file, 7);
|
||
* const data = Deno.readFileSync(file);
|
||
* console.log(new TextDecoder().decode(data));
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function truncateSync(name: string, len?: number): void;
|
||
|
||
/** Truncates or extends the specified file, to reach the specified `len`. If
|
||
* `len` is not specified then the entire file contents are truncated.
|
||
*
|
||
* ```ts
|
||
* // truncate the entire file
|
||
* await Deno.truncate("my_file.txt");
|
||
*
|
||
* // truncate part of the file
|
||
* const file = await Deno.makeTempFile();
|
||
* await Deno.writeFile(file, new TextEncoder().encode("Hello World"));
|
||
* await Deno.truncate(file, 7);
|
||
* const data = await Deno.readFile(file);
|
||
* console.log(new TextDecoder().decode(data)); // "Hello W"
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function truncate(name: string, len?: number): Promise<void>;
|
||
|
||
export interface Metrics {
|
||
opsDispatched: number;
|
||
opsDispatchedSync: number;
|
||
opsDispatchedAsync: number;
|
||
opsDispatchedAsyncUnref: number;
|
||
opsCompleted: number;
|
||
opsCompletedSync: number;
|
||
opsCompletedAsync: number;
|
||
opsCompletedAsyncUnref: number;
|
||
bytesSentControl: number;
|
||
bytesSentData: number;
|
||
bytesReceived: number;
|
||
}
|
||
|
||
/** Receive metrics from the privileged side of Deno. This is primarily used
|
||
* in the development of Deno. 'Ops', also called 'bindings', are the go-between
|
||
* between Deno JavaScript and Deno Rust.
|
||
*
|
||
* > console.table(Deno.metrics())
|
||
* ┌─────────────────────────┬────────┐
|
||
* │ (index) │ Values │
|
||
* ├─────────────────────────┼────────┤
|
||
* │ opsDispatched │ 3 │
|
||
* │ opsDispatchedSync │ 2 │
|
||
* │ opsDispatchedAsync │ 1 │
|
||
* │ opsDispatchedAsyncUnref │ 0 │
|
||
* │ opsCompleted │ 3 │
|
||
* │ opsCompletedSync │ 2 │
|
||
* │ opsCompletedAsync │ 1 │
|
||
* │ opsCompletedAsyncUnref │ 0 │
|
||
* │ bytesSentControl │ 73 │
|
||
* │ bytesSentData │ 0 │
|
||
* │ bytesReceived │ 375 │
|
||
* └─────────────────────────┴────────┘
|
||
*/
|
||
export function metrics(): Metrics;
|
||
|
||
interface ResourceMap {
|
||
// deno-lint-ignore no-explicit-any
|
||
[rid: number]: any;
|
||
}
|
||
|
||
/** Returns a map of open resource ids (rid) along with their string
|
||
* representations. This is an internal API and as such resource
|
||
* representation has `any` type; that means it can change any time.
|
||
*
|
||
* ```ts
|
||
* console.log(Deno.resources());
|
||
* // { 0: "stdin", 1: "stdout", 2: "stderr" }
|
||
* Deno.openSync('../test.file');
|
||
* console.log(Deno.resources());
|
||
* // { 0: "stdin", 1: "stdout", 2: "stderr", 3: "fsFile" }
|
||
* ```
|
||
*/
|
||
export function resources(): ResourceMap;
|
||
|
||
export interface FsEvent {
|
||
kind: "any" | "access" | "create" | "modify" | "remove";
|
||
paths: string[];
|
||
}
|
||
|
||
/**
|
||
* FsWatcher is returned by `Deno.watchFs` function when you start watching
|
||
* the file system. You can iterate over this interface to get the file
|
||
* system events, and also you can stop watching the file system by calling
|
||
* `.close()` method.
|
||
*/
|
||
export interface FsWatcher extends AsyncIterable<FsEvent> {
|
||
/** The resource id of the `FsWatcher`. */
|
||
readonly rid: number;
|
||
/** Stops watching the file system and closes the watcher resource. */
|
||
close(): void;
|
||
/** @deprecated
|
||
* Stops watching the file system and closes the watcher resource.
|
||
* Will be removed at 2.0.
|
||
*/
|
||
return?(value?: any): Promise<IteratorResult<FsEvent>>;
|
||
[Symbol.asyncIterator](): AsyncIterableIterator<FsEvent>;
|
||
}
|
||
|
||
/** Watch for file system events against one or more `paths`, which can be files
|
||
* or directories. These paths must exist already. One user action (e.g.
|
||
* `touch test.file`) can generate multiple file system events. Likewise,
|
||
* one user action can result in multiple file paths in one event (e.g. `mv
|
||
* old_name.txt new_name.txt`). Recursive option is `true` by default and,
|
||
* for directories, will watch the specified directory and all sub directories.
|
||
* Note that the exact ordering of the events can vary between operating systems.
|
||
*
|
||
* ```ts
|
||
* const watcher = Deno.watchFs("/");
|
||
* for await (const event of watcher) {
|
||
* console.log(">>>> event", event);
|
||
* // { kind: "create", paths: [ "/foo.txt" ] }
|
||
* }
|
||
* ```
|
||
*
|
||
* Requires `allow-read` permission.
|
||
*
|
||
* Call `watcher.close()` to stop watching.
|
||
*
|
||
* ```ts
|
||
* const watcher = Deno.watchFs("/");
|
||
*
|
||
* setTimeout(() => {
|
||
* watcher.close();
|
||
* }, 5000);
|
||
*
|
||
* for await (const event of watcher) {
|
||
* console.log(">>>> event", event);
|
||
* }
|
||
* ```
|
||
*/
|
||
export function watchFs(
|
||
paths: string | string[],
|
||
options?: { recursive: boolean },
|
||
): FsWatcher;
|
||
|
||
export class Process<T extends RunOptions = RunOptions> {
|
||
readonly rid: number;
|
||
readonly pid: number;
|
||
readonly stdin: T["stdin"] extends "piped" ? Writer & Closer
|
||
: (Writer & Closer) | null;
|
||
readonly stdout: T["stdout"] extends "piped" ? Reader & Closer
|
||
: (Reader & Closer) | null;
|
||
readonly stderr: T["stderr"] extends "piped" ? Reader & Closer
|
||
: (Reader & Closer) | null;
|
||
/** Wait for the process to exit and return its exit status.
|
||
*
|
||
* Calling this function multiple times will return the same status.
|
||
*
|
||
* Stdin handle to the process will be closed before waiting to avoid
|
||
* a deadlock.
|
||
*
|
||
* If `stdout` and/or `stderr` were set to `"piped"`, they must be closed
|
||
* manually before the process can exit.
|
||
*
|
||
* To run process to completion and collect output from both `stdout` and
|
||
* `stderr` use:
|
||
*
|
||
* ```ts
|
||
* const p = Deno.run({ cmd: [ "echo", "hello world" ], stderr: 'piped', stdout: 'piped' });
|
||
* const [status, stdout, stderr] = await Promise.all([
|
||
* p.status(),
|
||
* p.output(),
|
||
* p.stderrOutput()
|
||
* ]);
|
||
* p.close();
|
||
* ```
|
||
*/
|
||
status(): Promise<ProcessStatus>;
|
||
/** Buffer the stdout until EOF and return it as `Uint8Array`.
|
||
*
|
||
* You must set stdout to `"piped"` when creating the process.
|
||
*
|
||
* This calls `close()` on stdout after its done. */
|
||
output(): Promise<Uint8Array>;
|
||
/** Buffer the stderr until EOF and return it as `Uint8Array`.
|
||
*
|
||
* You must set stderr to `"piped"` when creating the process.
|
||
*
|
||
* This calls `close()` on stderr after its done. */
|
||
stderrOutput(): Promise<Uint8Array>;
|
||
close(): void;
|
||
|
||
/** **UNSTABLE**
|
||
*
|
||
* Send a signal to process. This functionality currently only works on
|
||
* Linux and Mac OS.
|
||
*/
|
||
kill(signo: string): void; // TODO(ry): Use Signal type here once made stable.
|
||
}
|
||
|
||
export type ProcessStatus =
|
||
| {
|
||
success: true;
|
||
code: 0;
|
||
signal?: undefined;
|
||
}
|
||
| {
|
||
success: false;
|
||
code: number;
|
||
signal?: number;
|
||
};
|
||
|
||
export interface RunOptions {
|
||
/** Arguments to pass. Note, the first element needs to be a path to the
|
||
* binary */
|
||
cmd: string[] | [URL, ...string[]];
|
||
cwd?: string;
|
||
env?: {
|
||
[key: string]: string;
|
||
};
|
||
stdout?: "inherit" | "piped" | "null" | number;
|
||
stderr?: "inherit" | "piped" | "null" | number;
|
||
stdin?: "inherit" | "piped" | "null" | number;
|
||
}
|
||
|
||
/** Spawns new subprocess. RunOptions must contain at a minimum the `opt.cmd`,
|
||
* an array of program arguments, the first of which is the binary.
|
||
*
|
||
* ```ts
|
||
* const p = Deno.run({
|
||
* cmd: ["echo", "hello"],
|
||
* });
|
||
* ```
|
||
*
|
||
* Subprocess uses same working directory as parent process unless `opt.cwd`
|
||
* is specified.
|
||
*
|
||
* Environmental variables from parent process can be cleared using `opt.clearEnv`.
|
||
* Doesn't guarantee that only `opt.env` variables are present,
|
||
* as the OS may set environmental variables for processes.
|
||
*
|
||
* Environmental variables for subprocess can be specified using `opt.env`
|
||
* mapping.
|
||
*
|
||
* `opt.uid` sets the child process’s user ID. This translates to a setuid call
|
||
* in the child process. Failure in the setuid call will cause the spawn to fail.
|
||
*
|
||
* `opt.gid` is similar to `opt.uid`, but sets the group ID of the child process.
|
||
* This has the same semantics as the uid field.
|
||
*
|
||
* By default subprocess inherits stdio of parent process. To change that
|
||
* `opt.stdout`, `opt.stderr` and `opt.stdin` can be specified independently -
|
||
* they can be set to either an rid of open file or set to "inherit" "piped"
|
||
* or "null":
|
||
*
|
||
* `"inherit"` The default if unspecified. The child inherits from the
|
||
* corresponding parent descriptor.
|
||
*
|
||
* `"piped"` A new pipe should be arranged to connect the parent and child
|
||
* sub-processes.
|
||
*
|
||
* `"null"` This stream will be ignored. This is the equivalent of attaching
|
||
* the stream to `/dev/null`.
|
||
*
|
||
* Details of the spawned process are returned.
|
||
*
|
||
* Requires `allow-run` permission. */
|
||
export function run<T extends RunOptions = RunOptions>(opt: T): Process<T>;
|
||
|
||
export interface InspectOptions {
|
||
/** Stylize output with ANSI colors. Defaults to false. */
|
||
colors?: boolean;
|
||
/** Try to fit more than one entry of a collection on the same line.
|
||
* Defaults to true. */
|
||
compact?: boolean;
|
||
/** Traversal depth for nested objects. Defaults to 4. */
|
||
depth?: number;
|
||
/** The maximum number of iterable entries to print. Defaults to 100. */
|
||
iterableLimit?: number;
|
||
/** Show a Proxy's target and handler. Defaults to false. */
|
||
showProxy?: boolean;
|
||
/** Sort Object, Set and Map entries by key. Defaults to false. */
|
||
sorted?: boolean;
|
||
/** Add a trailing comma for multiline collections. Defaults to false. */
|
||
trailingComma?: boolean;
|
||
/*** Evaluate the result of calling getters. Defaults to false. */
|
||
getters?: boolean;
|
||
/** Show an object's non-enumerable properties. Defaults to false. */
|
||
showHidden?: boolean;
|
||
}
|
||
|
||
/** Converts the input into a string that has the same format as printed by
|
||
* `console.log()`.
|
||
*
|
||
* ```ts
|
||
* const obj = {
|
||
* a: 10,
|
||
* b: "hello",
|
||
* };
|
||
* const objAsString = Deno.inspect(obj); // { a: 10, b: "hello" }
|
||
* console.log(obj); // prints same value as objAsString, e.g. { a: 10, b: "hello" }
|
||
* ```
|
||
*
|
||
* You can also register custom inspect functions, via the symbol `Symbol.for("Deno.customInspect")`,
|
||
* on objects, to control and customize the output.
|
||
*
|
||
* ```ts
|
||
* class A {
|
||
* x = 10;
|
||
* y = "hello";
|
||
* [Symbol.for("Deno.customInspect")](): string {
|
||
* return "x=" + this.x + ", y=" + this.y;
|
||
* }
|
||
* }
|
||
*
|
||
* const inStringFormat = Deno.inspect(new A()); // "x=10, y=hello"
|
||
* console.log(inStringFormat); // prints "x=10, y=hello"
|
||
* ```
|
||
*
|
||
* Finally, you can also specify the depth to which it will format.
|
||
*
|
||
* ```ts
|
||
* Deno.inspect({a: {b: {c: {d: 'hello'}}}}, {depth: 2}); // { a: { b: [Object] } }
|
||
* ```
|
||
*/
|
||
export function inspect(value: unknown, options?: InspectOptions): string;
|
||
|
||
/** The name of a "powerful feature" which needs permission. */
|
||
export type PermissionName =
|
||
| "run"
|
||
| "read"
|
||
| "write"
|
||
| "net"
|
||
| "env"
|
||
| "ffi"
|
||
| "hrtime";
|
||
|
||
/** The current status of the permission. */
|
||
export type PermissionState = "granted" | "denied" | "prompt";
|
||
|
||
export interface RunPermissionDescriptor {
|
||
name: "run";
|
||
command?: string | URL;
|
||
}
|
||
|
||
export interface ReadPermissionDescriptor {
|
||
name: "read";
|
||
path?: string | URL;
|
||
}
|
||
|
||
export interface WritePermissionDescriptor {
|
||
name: "write";
|
||
path?: string | URL;
|
||
}
|
||
|
||
export interface NetPermissionDescriptor {
|
||
name: "net";
|
||
/** Optional host string of the form `"<hostname>[:<port>]"`. Examples:
|
||
*
|
||
* "github.com"
|
||
* "deno.land:8080"
|
||
*/
|
||
host?: string;
|
||
}
|
||
|
||
export interface EnvPermissionDescriptor {
|
||
name: "env";
|
||
variable?: string;
|
||
}
|
||
|
||
export interface FfiPermissionDescriptor {
|
||
name: "ffi";
|
||
}
|
||
|
||
export interface HrtimePermissionDescriptor {
|
||
name: "hrtime";
|
||
}
|
||
|
||
/** Permission descriptors which define a permission and can be queried,
|
||
* requested, or revoked. */
|
||
export type PermissionDescriptor =
|
||
| RunPermissionDescriptor
|
||
| ReadPermissionDescriptor
|
||
| WritePermissionDescriptor
|
||
| NetPermissionDescriptor
|
||
| EnvPermissionDescriptor
|
||
| FfiPermissionDescriptor
|
||
| HrtimePermissionDescriptor;
|
||
|
||
export interface PermissionStatusEventMap {
|
||
"change": Event;
|
||
}
|
||
|
||
export class PermissionStatus extends EventTarget {
|
||
// deno-lint-ignore no-explicit-any
|
||
onchange: ((this: PermissionStatus, ev: Event) => any) | null;
|
||
readonly state: PermissionState;
|
||
addEventListener<K extends keyof PermissionStatusEventMap>(
|
||
type: K,
|
||
listener: (
|
||
this: PermissionStatus,
|
||
ev: PermissionStatusEventMap[K],
|
||
) => any,
|
||
options?: boolean | AddEventListenerOptions,
|
||
): void;
|
||
addEventListener(
|
||
type: string,
|
||
listener: EventListenerOrEventListenerObject,
|
||
options?: boolean | AddEventListenerOptions,
|
||
): void;
|
||
removeEventListener<K extends keyof PermissionStatusEventMap>(
|
||
type: K,
|
||
listener: (
|
||
this: PermissionStatus,
|
||
ev: PermissionStatusEventMap[K],
|
||
) => any,
|
||
options?: boolean | EventListenerOptions,
|
||
): void;
|
||
removeEventListener(
|
||
type: string,
|
||
listener: EventListenerOrEventListenerObject,
|
||
options?: boolean | EventListenerOptions,
|
||
): void;
|
||
}
|
||
|
||
export class Permissions {
|
||
/** Resolves to the current status of a permission.
|
||
*
|
||
* ```ts
|
||
* const status = await Deno.permissions.query({ name: "read", path: "/etc" });
|
||
* console.log(status.state);
|
||
* ```
|
||
*/
|
||
query(desc: PermissionDescriptor): Promise<PermissionStatus>;
|
||
|
||
/** Revokes a permission, and resolves to the state of the permission.
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
*
|
||
* const status = await Deno.permissions.revoke({ name: "run" });
|
||
* assert(status.state !== "granted")
|
||
* ```
|
||
*/
|
||
revoke(desc: PermissionDescriptor): Promise<PermissionStatus>;
|
||
|
||
/** Requests the permission, and resolves to the state of the permission.
|
||
*
|
||
* ```ts
|
||
* const status = await Deno.permissions.request({ name: "env" });
|
||
* if (status.state === "granted") {
|
||
* console.log("'env' permission is granted.");
|
||
* } else {
|
||
* console.log("'env' permission is denied.");
|
||
* }
|
||
* ```
|
||
*/
|
||
request(desc: PermissionDescriptor): Promise<PermissionStatus>;
|
||
}
|
||
|
||
/** Deno's permission management API. */
|
||
export const permissions: Permissions;
|
||
|
||
/** Build related information. */
|
||
export const build: {
|
||
/** The LLVM target triple */
|
||
target: string;
|
||
/** Instruction set architecture */
|
||
arch: "x86_64" | "aarch64";
|
||
/** Operating system */
|
||
os: "darwin" | "linux" | "windows";
|
||
/** Computer vendor */
|
||
vendor: string;
|
||
/** Optional environment */
|
||
env?: string;
|
||
};
|
||
|
||
/** Version related information. */
|
||
export const version: {
|
||
/** Deno's version. For example: `"1.0.0"` */
|
||
deno: string;
|
||
/** The V8 version used by Deno. For example: `"8.0.0.0"` */
|
||
v8: string;
|
||
/** The TypeScript version used by Deno. For example: `"4.0.0"` */
|
||
typescript: string;
|
||
};
|
||
|
||
/** Returns the script arguments to the program. If for example we run a
|
||
* program:
|
||
*
|
||
* deno run --allow-read https://deno.land/std/examples/cat.ts /etc/passwd
|
||
*
|
||
* Then `Deno.args` will contain:
|
||
*
|
||
* [ "/etc/passwd" ]
|
||
*/
|
||
export const args: string[];
|
||
|
||
/**
|
||
* @deprecated A symbol which can be used as a key for a custom method which will be
|
||
* called when `Deno.inspect()` is called, or when the object is logged to
|
||
* the console.
|
||
*
|
||
* This symbol is deprecated since 1.9. Use `Symbol.for("Deno.customInspect")` instead.
|
||
*/
|
||
export const customInspect: unique symbol;
|
||
|
||
/** The URL of the entrypoint module entered from the command-line. */
|
||
export const mainModule: string;
|
||
|
||
export type SymlinkOptions = {
|
||
type: "file" | "dir";
|
||
};
|
||
|
||
/**
|
||
* Creates `newpath` as a symbolic link to `oldpath`.
|
||
*
|
||
* The options.type parameter can be set to `file` or `dir`. This argument is only
|
||
* available on Windows and ignored on other platforms.
|
||
*
|
||
* ```ts
|
||
* Deno.symlinkSync("old/name", "new/name");
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function symlinkSync(
|
||
oldpath: string | URL,
|
||
newpath: string | URL,
|
||
options?: SymlinkOptions,
|
||
): void;
|
||
|
||
/**
|
||
* Creates `newpath` as a symbolic link to `oldpath`.
|
||
*
|
||
* The options.type parameter can be set to `file` or `dir`. This argument is only
|
||
* available on Windows and ignored on other platforms.
|
||
*
|
||
* ```ts
|
||
* await Deno.symlink("old/name", "new/name");
|
||
* ```
|
||
*
|
||
* Requires `allow-write` permission. */
|
||
export function symlink(
|
||
oldpath: string | URL,
|
||
newpath: string | URL,
|
||
options?: SymlinkOptions,
|
||
): Promise<void>;
|
||
|
||
/**
|
||
* Synchronously truncates or extends the specified file stream, to reach the
|
||
* specified `len`.
|
||
*
|
||
* If `len` is not specified then the entire file contents are truncated as if len was set to 0.
|
||
*
|
||
* if the file previously was larger than this new length, the extra data is lost.
|
||
*
|
||
* if the file previously was shorter, it is extended, and the extended part reads as null bytes ('\0').
|
||
*
|
||
* ```ts
|
||
* // truncate the entire file
|
||
* const file = Deno.openSync("my_file.txt", { read: true, write: true, truncate: true, create: true });
|
||
* Deno.ftruncateSync(file.rid);
|
||
* ```
|
||
*
|
||
* ```ts
|
||
* // truncate part of the file
|
||
* const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
|
||
* Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
|
||
* Deno.ftruncateSync(file.rid, 7);
|
||
* Deno.seekSync(file.rid, 0, Deno.SeekMode.Start);
|
||
* const data = new Uint8Array(32);
|
||
* Deno.readSync(file.rid, data);
|
||
* console.log(new TextDecoder().decode(data)); // Hello W
|
||
* ```
|
||
*/
|
||
export function ftruncateSync(rid: number, len?: number): void;
|
||
|
||
/**
|
||
* Truncates or extends the specified file stream, to reach the specified `len`.
|
||
*
|
||
* If `len` is not specified then the entire file contents are truncated as if len was set to 0.
|
||
*
|
||
* If the file previously was larger than this new length, the extra data is lost.
|
||
*
|
||
* If the file previously was shorter, it is extended, and the extended part reads as null bytes ('\0').
|
||
*
|
||
* ```ts
|
||
* // truncate the entire file
|
||
* const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
|
||
* await Deno.ftruncate(file.rid);
|
||
* ```
|
||
*
|
||
* ```ts
|
||
* // truncate part of the file
|
||
* const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
|
||
* await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
|
||
* await Deno.ftruncate(file.rid, 7);
|
||
* const data = new Uint8Array(32);
|
||
* await Deno.read(file.rid, data);
|
||
* console.log(new TextDecoder().decode(data)); // Hello W
|
||
* ```
|
||
*/
|
||
export function ftruncate(rid: number, len?: number): Promise<void>;
|
||
|
||
/**
|
||
* Synchronously returns a `Deno.FileInfo` for the given file stream.
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
* const file = Deno.openSync("file.txt", { read: true });
|
||
* const fileInfo = Deno.fstatSync(file.rid);
|
||
* assert(fileInfo.isFile);
|
||
* ```
|
||
*/
|
||
export function fstatSync(rid: number): FileInfo;
|
||
|
||
/**
|
||
* Returns a `Deno.FileInfo` for the given file stream.
|
||
*
|
||
* ```ts
|
||
* import { assert } from "https://deno.land/std/testing/asserts.ts";
|
||
* const file = await Deno.open("file.txt", { read: true });
|
||
* const fileInfo = await Deno.fstat(file.rid);
|
||
* assert(fileInfo.isFile);
|
||
* ```
|
||
*/
|
||
export function fstat(rid: number): Promise<FileInfo>;
|
||
|
||
export interface RequestEvent {
|
||
readonly request: Request;
|
||
respondWith(r: Response | Promise<Response>): Promise<void>;
|
||
}
|
||
|
||
export interface HttpConn extends AsyncIterable<RequestEvent> {
|
||
readonly rid: number;
|
||
|
||
nextRequest(): Promise<RequestEvent | null>;
|
||
close(): void;
|
||
}
|
||
|
||
/**
|
||
* Services HTTP requests given a TCP or TLS socket.
|
||
*
|
||
* ```ts
|
||
* const conn = await Deno.connect({ port: 80, hostname: "127.0.0.1" });
|
||
* const httpConn = Deno.serveHttp(conn);
|
||
* const e = await httpConn.nextRequest();
|
||
* if (e) {
|
||
* e.respondWith(new Response("Hello World"));
|
||
* }
|
||
* ```
|
||
*
|
||
* If `httpConn.nextRequest()` encounters an error or returns `null`
|
||
* then the underlying HttpConn resource is closed automatically.
|
||
*
|
||
* Alternatively, you can also use the Async Iterator approach:
|
||
*
|
||
* ```ts
|
||
* async function handleHttp(conn: Deno.Conn) {
|
||
* for await (const e of Deno.serveHttp(conn)) {
|
||
* e.respondWith(new Response("Hello World"));
|
||
* }
|
||
* }
|
||
*
|
||
* for await (const conn of Deno.listen({ port: 80 })) {
|
||
* handleHttp(conn);
|
||
* }
|
||
* ```
|
||
*/
|
||
export function serveHttp(conn: Conn): HttpConn;
|
||
|
||
export interface WebSocketUpgrade {
|
||
response: Response;
|
||
socket: WebSocket;
|
||
}
|
||
|
||
export interface UpgradeWebSocketOptions {
|
||
protocol?: string;
|
||
}
|
||
|
||
/**
|
||
* Used to upgrade an incoming HTTP request to a WebSocket.
|
||
*
|
||
* Given a request, returns a pair of WebSocket and Response. The original
|
||
* request must be responded to with the returned response for the websocket
|
||
* upgrade to be successful.
|
||
*
|
||
* ```ts
|
||
* const conn = await Deno.connect({ port: 80, hostname: "127.0.0.1" });
|
||
* const httpConn = Deno.serveHttp(conn);
|
||
* const e = await httpConn.nextRequest();
|
||
* if (e) {
|
||
* const { socket, response } = Deno.upgradeWebSocket(e.request);
|
||
* socket.onopen = () => {
|
||
* socket.send("Hello World!");
|
||
* };
|
||
* socket.onmessage = (e) => {
|
||
* console.log(e.data);
|
||
* socket.close();
|
||
* };
|
||
* socket.onclose = () => console.log("WebSocket has been closed.");
|
||
* socket.onerror = (e) => console.error("WebSocket error:", e);
|
||
* e.respondWith(response);
|
||
* }
|
||
* ```
|
||
*
|
||
* If the request body is disturbed (read from) before the upgrade is
|
||
* completed, upgrading fails.
|
||
*
|
||
* This operation does not yet consume the request or open the websocket. This
|
||
* only happens once the returned response has been passed to `respondWith`.
|
||
*/
|
||
export function upgradeWebSocket(
|
||
request: Request,
|
||
options?: UpgradeWebSocketOptions,
|
||
): WebSocketUpgrade;
|
||
}
|