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denoland-deno/cli/dts/lib.deno.unstable.d.ts

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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
/// <reference no-default-lib="true" />
/// <reference lib="deno.ns" />
declare namespace Deno {
/**
* **UNSTABLE**: New API, yet to be vetted. This API is under consideration to
* determine if permissions are required to call it.
*
* Retrieve the process umask. If `mask` is provided, sets the process umask.
* This call always returns what the umask was before the call.
*
* ```ts
* console.log(Deno.umask()); // e.g. 18 (0o022)
* const prevUmaskValue = Deno.umask(0o077); // e.g. 18 (0o022)
* console.log(Deno.umask()); // e.g. 63 (0o077)
* ```
*
* NOTE: This API is not implemented on Windows
*/
export function umask(mask?: number): number;
/** **UNSTABLE**: This API needs a security review.
*
* Synchronously creates `newpath` as a hard link to `oldpath`.
*
* ```ts
* Deno.linkSync("old/name", "new/name");
* ```
*
* Requires `allow-read` and `allow-write` permissions. */
export function linkSync(oldpath: string, newpath: string): void;
/** **UNSTABLE**: This API needs a security review.
*
* Creates `newpath` as a hard link to `oldpath`.
*
* ```ts
* await Deno.link("old/name", "new/name");
* ```
*
* Requires `allow-read` and `allow-write` permissions. */
export function link(oldpath: string, newpath: string): Promise<void>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Gets the size of the console as columns/rows.
*
* ```ts
* const { columns, rows } = Deno.consoleSize(Deno.stdout.rid);
* ```
*/
export function consoleSize(
rid: number,
): {
columns: number;
rows: number;
};
export type SymlinkOptions = {
type: "file" | "dir";
};
/** **UNSTABLE**: This API needs a security review.
*
* 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,
newpath: string,
options?: SymlinkOptions,
): void;
/** **UNSTABLE**: This API needs a security review.
*
* 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,
newpath: string,
options?: SymlinkOptions,
): Promise<void>;
/** **Unstable** There are questions around which permission this needs. And
* maybe should be renamed (loadAverage?)
*
* Returns an array containing the 1, 5, and 15 minute load averages. The
* load average is a measure of CPU and IO utilization of the last one, five,
* and 15 minute periods expressed as a fractional number. Zero means there
* is no load. On Windows, the three values are always the same and represent
* the current load, not the 1, 5 and 15 minute load averages.
*
* ```ts
* console.log(Deno.loadavg()); // e.g. [ 0.71, 0.44, 0.44 ]
* ```
*
* Requires `allow-env` permission.
*/
export function loadavg(): number[];
/** **Unstable** new API. yet to be vetted. Under consideration to possibly move to
* Deno.build or Deno.versions and if it should depend sys-info, which may not
* be desireable.
*
* Returns the release version of the Operating System.
*
* ```ts
* console.log(Deno.osRelease());
* ```
*
* Requires `allow-env` permission.
*
*/
export function osRelease(): string;
/** **Unstable** new API. yet to be vetted.
*
* Displays the total amount of free and used physical and swap memory in the
* system, as well as the buffers and caches used by the kernel.
*
* This is similar to the `free` command in Linux
*
* ```ts
* console.log(Deno.systemMemoryInfo());
* ```
*
* Requires `allow-env` permission.
*
*/
export function systemMemoryInfo(): SystemMemoryInfo;
export interface SystemMemoryInfo {
/** Total installed memory */
total: number;
/** Unused memory */
free: number;
/** Estimation of how much memory is available for starting new
* applications, without swapping. Unlike the data provided by the cache or
* free fields, this field takes into account page cache and also that not
* all reclaimable memory slabs will be reclaimed due to items being in use
*/
available: number;
/** Memory used by kernel buffers */
buffers: number;
/** Memory used by the page cache and slabs */
cached: number;
/** Total swap memory */
swapTotal: number;
/** Unused swap memory */
swapFree: number;
}
/** **Unstable** new API. yet to be vetted.
*
* Returns the total number of logical cpus in the system along with
* the speed measured in MHz. If either the syscall to get the core
* count or speed of the cpu is unsuccessful the value of the it
* is undefined.
*
* ```ts
* console.log(Deno.systemCpuInfo());
* ```
*
* Requires `allow-env` permission.
*
*/
export function systemCpuInfo(): SystemCpuInfo;
export interface SystemCpuInfo {
/** Total number of logical cpus in the system */
cores: number | undefined;
/** The speed of the cpu measured in MHz */
speed: number | undefined;
}
/** **UNSTABLE**: new API, yet to be vetted.
*
* Open and initialize a plugin.
*
* ```ts
* const rid = Deno.openPlugin("./path/to/some/plugin.so");
* const opId = Deno.core.ops()["some_op"];
* const response = Deno.core.dispatch(opId, new Uint8Array([1,2,3,4]));
* console.log(`Response from plugin ${response}`);
* ```
*
* Requires `allow-plugin` permission.
*
* The plugin system is not stable and will change in the future, hence the
* lack of docs. For now take a look at the example
* https://github.com/denoland/deno/tree/master/test_plugin
*/
export function openPlugin(filename: string): number;
/** The log category for a diagnostic message. */
export enum DiagnosticCategory {
Warning = 0,
Error = 1,
Suggestion = 2,
Message = 3,
}
export interface DiagnosticMessageChain {
message: string;
category: DiagnosticCategory;
code: number;
next?: DiagnosticMessageChain[];
}
export interface Diagnostic {
/** A string message summarizing the diagnostic. */
messageText?: string;
/** An ordered array of further diagnostics. */
messageChain?: DiagnosticMessageChain;
/** Information related to the diagnostic. This is present when there is a
* suggestion or other additional diagnostic information */
relatedInformation?: Diagnostic[];
/** The text of the source line related to the diagnostic. */
sourceLine?: string;
source?: string;
/** The start position of the error. Zero based index. */
start?: {
line: number;
character: number;
};
/** The end position of the error. Zero based index. */
end?: {
line: number;
character: number;
};
/** The filename of the resource related to the diagnostic message. */
fileName?: string;
/** The category of the diagnostic. */
category: DiagnosticCategory;
/** A number identifier. */
code: number;
}
/** **UNSTABLE**: new API, yet to be vetted.
*
* Format an array of diagnostic items and return them as a single string in a
* user friendly format.
*
* ```ts
* const { diagnostics } = await Deno.emit("file_with_compile_issues.ts");
* console.table(diagnostics); // Prints raw diagnostic data
* console.log(Deno.formatDiagnostics(diagnostics)); // User friendly output of diagnostics
* ```
*
* @param diagnostics An array of diagnostic items to format
*/
export function formatDiagnostics(diagnostics: Diagnostic[]): string;
/** **UNSTABLE**: new API, yet to be vetted.
*
* A specific subset TypeScript compiler options that can be supported by the
* Deno TypeScript compiler. */
export interface CompilerOptions {
/** Allow JavaScript files to be compiled. Defaults to `true`. */
allowJs?: boolean;
/** Allow default imports from modules with no default export. This does not
* affect code emit, just typechecking. Defaults to `false`. */
allowSyntheticDefaultImports?: boolean;
/** Allow accessing UMD globals from modules. Defaults to `false`. */
allowUmdGlobalAccess?: boolean;
/** Do not report errors on unreachable code. Defaults to `false`. */
allowUnreachableCode?: boolean;
/** Do not report errors on unused labels. Defaults to `false` */
allowUnusedLabels?: boolean;
/** Parse in strict mode and emit `"use strict"` for each source file.
* Defaults to `true`. */
alwaysStrict?: boolean;
/** Base directory to resolve non-relative module names. Defaults to
* `undefined`. */
baseUrl?: string;
/** The character set of the input files. Defaults to `"utf8"`. */
charset?: string;
/** Report errors in `.js` files. Use in conjunction with `allowJs`. Defaults
* to `false`. */
checkJs?: boolean;
/** Generates corresponding `.d.ts` file. Defaults to `false`. */
declaration?: boolean;
/** Output directory for generated declaration files. */
declarationDir?: string;
/** Generates a source map for each corresponding `.d.ts` file. Defaults to
* `false`. */
declarationMap?: boolean;
/** Provide full support for iterables in `for..of`, spread and
* destructuring when targeting ES5 or ES3. Defaults to `false`. */
downlevelIteration?: boolean;
/** Only emit `.d.ts` declaration files. Defaults to `false`. */
emitDeclarationOnly?: boolean;
/** Emit design-type metadata for decorated declarations in source. See issue
* [microsoft/TypeScript#2577](https://github.com/Microsoft/TypeScript/issues/2577)
* for details. Defaults to `false`. */
emitDecoratorMetadata?: boolean;
/** Emit `__importStar` and `__importDefault` helpers for runtime babel
* ecosystem compatibility and enable `allowSyntheticDefaultImports` for type
* system compatibility. Defaults to `true`. */
esModuleInterop?: boolean;
/** Enables experimental support for ES decorators. Defaults to `true`. */
experimentalDecorators?: boolean;
/** Import emit helpers (e.g. `__extends`, `__rest`, etc..) from
* [tslib](https://www.npmjs.com/package/tslib). */
importHelpers?: boolean;
/** This flag controls how `import` works, there are 3 different options:
*
* - `remove`: The default behavior of dropping import statements which only
* reference types.
* - `preserve`: Preserves all `import` statements whose values or types are
* never used. This can cause imports/side-effects to be preserved.
* - `error`: This preserves all imports (the same as the preserve option),
* but will error when a value import is only used as a type. This might
* be useful if you want to ensure no values are being accidentally
* imported, but still make side-effect imports explicit.
*
* This flag works because you can use `import type` to explicitly create an
* `import` statement which should never be emitted into JavaScript. */
importsNotUsedAsValues?: "remove" | "preserve" | "error";
/** Emit a single file with source maps instead of having a separate file.
* Defaults to `false`. */
inlineSourceMap?: boolean;
/** Emit the source alongside the source maps within a single file; requires
* `inlineSourceMap` or `sourceMap` to be set. Defaults to `false`. */
inlineSources?: boolean;
/** Support JSX in `.tsx` files: `"react"`, `"preserve"`, `"react-native"`.
* Defaults to `"react"`. */
jsx?: "react" | "preserve" | "react-native";
/** Specify the JSX factory function to use when targeting react JSX emit,
* e.g. `React.createElement` or `h`. Defaults to `React.createElement`. */
jsxFactory?: string;
/** Specify the JSX fragment factory function to use when targeting react
* JSX emit, e.g. `Fragment`. Defaults to `React.Fragment`. */
jsxFragmentFactory?: string;
/** Resolve keyof to string valued property names only (no numbers or
* symbols). Defaults to `false`. */
keyofStringsOnly?: string;
/** List of library files to be included in the compilation. If omitted,
* then the Deno main runtime libs are used. */
lib?: string[];
/** The locale to use to show error messages. */
locale?: string;
/** Specifies the location where debugger should locate map files instead of
* generated locations. Use this flag if the `.map` files will be located at
* run-time in a different location than the `.js` files. The location
* specified will be embedded in the source map to direct the debugger where
* the map files will be located. Defaults to `undefined`. */
mapRoot?: string;
/** Specify the module format for the emitted code. Defaults to
* `"esnext"`. */
module?:
| "none"
| "commonjs"
| "amd"
| "system"
| "umd"
| "es6"
| "es2015"
| "esnext";
/** Do not generate custom helper functions like `__extends` in compiled
* output. Defaults to `false`. */
noEmitHelpers?: boolean;
/** Report errors for fallthrough cases in switch statement. Defaults to
* `false`. */
noFallthroughCasesInSwitch?: boolean;
/** Raise error on expressions and declarations with an implied any type.
* Defaults to `true`. */
noImplicitAny?: boolean;
/** Report an error when not all code paths in function return a value.
* Defaults to `false`. */
noImplicitReturns?: boolean;
/** Raise error on `this` expressions with an implied `any` type. Defaults to
* `true`. */
noImplicitThis?: boolean;
/** Do not emit `"use strict"` directives in module output. Defaults to
* `false`. */
noImplicitUseStrict?: boolean;
/** Do not include the default library file (`lib.d.ts`). Defaults to
* `false`. */
noLib?: boolean;
/** Do not add triple-slash references or module import targets to the list of
* compiled files. Defaults to `false`. */
noResolve?: boolean;
/** Disable strict checking of generic signatures in function types. Defaults
* to `false`. */
noStrictGenericChecks?: boolean;
/** Include 'undefined' in index signature results. Defaults to `false`. */
noUncheckedIndexedAccess?: boolean;
/** Report errors on unused locals. Defaults to `false`. */
noUnusedLocals?: boolean;
/** Report errors on unused parameters. Defaults to `false`. */
noUnusedParameters?: boolean;
/** List of path mapping entries for module names to locations relative to the
* `baseUrl`. Defaults to `undefined`. */
paths?: Record<string, string[]>;
/** Do not erase const enum declarations in generated code. Defaults to
* `false`. */
preserveConstEnums?: boolean;
/** Remove all comments except copy-right header comments beginning with
* `/*!`. Defaults to `true`. */
removeComments?: boolean;
/** Specifies the root directory of input files. Only use to control the
* output directory structure with `outDir`. Defaults to `undefined`. */
rootDir?: string;
/** List of _root_ folders whose combined content represent the structure of
* the project at runtime. Defaults to `undefined`. */
rootDirs?: string[];
/** Generates corresponding `.map` file. Defaults to `false`. */
sourceMap?: boolean;
/** Specifies the location where debugger should locate TypeScript files
* instead of source locations. Use this flag if the sources will be located
* at run-time in a different location than that at design-time. The location
* specified will be embedded in the sourceMap to direct the debugger where
* the source files will be located. Defaults to `undefined`. */
sourceRoot?: string;
/** Skip type checking of all declaration files (`*.d.ts`). */
skipLibCheck?: boolean;
/** Enable all strict type checking options. Enabling `strict` enables
* `noImplicitAny`, `noImplicitThis`, `alwaysStrict`, `strictBindCallApply`,
* `strictNullChecks`, `strictFunctionTypes` and
* `strictPropertyInitialization`. Defaults to `true`. */
strict?: boolean;
/** Enable stricter checking of the `bind`, `call`, and `apply` methods on
* functions. Defaults to `true`. */
strictBindCallApply?: boolean;
/** Disable bivariant parameter checking for function types. Defaults to
* `true`. */
strictFunctionTypes?: boolean;
/** Ensure non-undefined class properties are initialized in the constructor.
* This option requires `strictNullChecks` be enabled in order to take effect.
* Defaults to `true`. */
strictPropertyInitialization?: boolean;
/** In strict null checking mode, the `null` and `undefined` values are not in
* the domain of every type and are only assignable to themselves and `any`
* (the one exception being that `undefined` is also assignable to `void`). */
strictNullChecks?: boolean;
/** Suppress excess property checks for object literals. Defaults to
* `false`. */
suppressExcessPropertyErrors?: boolean;
/** Suppress `noImplicitAny` errors for indexing objects lacking index
* signatures. */
suppressImplicitAnyIndexErrors?: boolean;
/** Specify ECMAScript target version. Defaults to `esnext`. */
target?:
| "es3"
| "es5"
| "es6"
| "es2015"
| "es2016"
| "es2017"
| "es2018"
| "es2019"
| "es2020"
| "esnext";
/** List of names of type definitions to include. Defaults to `undefined`.
*
* The type definitions are resolved according to the normal Deno resolution
* irrespective of if sources are provided on the call. Like other Deno
* modules, there is no "magical" resolution. For example:
*
* ```ts
* Deno.compile(
* "./foo.js",
* undefined,
* {
* types: [ "./foo.d.ts", "https://deno.land/x/example/types.d.ts" ]
* }
* );
* ```
*/
types?: string[];
/** Emit class fields with ECMAScript-standard semantics. Defaults to
* `false`. */
useDefineForClassFields?: boolean;
}
interface ImportMap {
imports: Record<string, string>;
scopes?: Record<string, Record<string, string>>;
}
interface EmitOptions {
/** Indicate that the source code should be emitted to a single file
* JavaScript bundle that is a single ES module (`"esm"`) or a single file
* self contained script we executes in an immediately invoked function
* when loaded (`"iife"`). */
bundle?: "esm" | "iife";
/** If `true` then the sources will be typed checked, returning any
* diagnostic errors in the result. If `false` type checking will be
* skipped. Defaults to `true`.
*
* *Note* by default, only TypeScript will be type checked, just like on
* the command line. Use the `compilerOptions` options of `checkJs` to
* enable type checking of JavaScript. */
check?: boolean;
/** A set of options that are aligned to TypeScript compiler options that
* are supported by Deno. */
compilerOptions?: CompilerOptions;
/** An [import-map](https://deno.land/manual/linking_to_external_code/import_maps#import-maps)
* which will be applied to the imports. */
importMap?: ImportMap;
/** An absolute path to an [import-map](https://deno.land/manual/linking_to_external_code/import_maps#import-maps).
* Required to be specified if an `importMap` is specified to be able to
* determine resolution of relative paths. If a `importMap` is not
* specified, then it will assumed the file path points to an import map on
* disk and will be attempted to be loaded based on current runtime
* permissions.
*/
importMapPath?: string;
/** A record of sources to use when doing the emit. If provided, Deno will
* use these sources instead of trying to resolve the modules externally. */
sources?: Record<string, string>;
}
interface EmitResult {
/** Diagnostic messages returned from the type checker (`tsc`). */
diagnostics: Diagnostic[];
/** Any emitted files. If bundled, then the JavaScript will have the
* key of `deno:///bundle.js` with an optional map (based on
* `compilerOptions`) in `deno:///bundle.js.map`. */
files: Record<string, string>;
/** An optional array of any compiler options that were ignored by Deno. */
ignoredOptions?: string[];
/** An array of internal statistics related to the emit, for diagnostic
* purposes. */
stats: Array<[string, number]>;
}
/**
* **UNSTABLE**: new API, yet to be vetted.
*
* Similar to the command line functionality of `deno run` or `deno cache`,
* `Deno.emit()` provides a way to provide Deno arbitrary JavaScript
* or TypeScript and have it return JavaScript based on the options and
* settings provided. The source code can either be provided or the modules
* can be fetched and resolved in line with the behavior of the command line.
*
* Requires `allow-read` and/or `allow-net` if sources are not provided.
*
* @param rootSpecifier The specifier that will be used as the entry point.
* If no sources are provided, then the specifier would
* be the same as if you typed it on the command line for
* `deno run`. If sources are provided, it should match
* one of the names of the sources.
* @param options A set of options to be used with the emit.
*/
export function emit(
rootSpecifier: string | URL,
options?: EmitOptions,
): Promise<EmitResult>;
/** **UNSTABLE**: Should not have same name as `window.location` type. */
interface Location {
/** The full url for the module, e.g. `file://some/file.ts` or
* `https://some/file.ts`. */
fileName: string;
/** The line number in the file. It is assumed to be 1-indexed. */
lineNumber: number;
/** The column number in the file. It is assumed to be 1-indexed. */
columnNumber: number;
}
/** **UNSTABLE**: new API, yet to be vetted.
*
* Given a current location in a module, lookup the source location and return
* it.
*
* When Deno transpiles code, it keep source maps of the transpiled code. This
* function can be used to lookup the original location. This is
* automatically done when accessing the `.stack` of an error, or when an
* uncaught error is logged. This function can be used to perform the lookup
* for creating better error handling.
*
* **Note:** `line` and `column` are 1 indexed, which matches display
* expectations, but is not typical of most index numbers in Deno.
*
* An example:
*
* ```ts
* const orig = Deno.applySourceMap({
* fileName: "file://my/module.ts",
* lineNumber: 5,
* columnNumber: 15
* });
* console.log(`${orig.filename}:${orig.line}:${orig.column}`);
* ```
*/
export function applySourceMap(location: Location): Location;
enum LinuxSignal {
SIGHUP = 1,
SIGINT = 2,
SIGQUIT = 3,
SIGILL = 4,
SIGTRAP = 5,
SIGABRT = 6,
SIGBUS = 7,
SIGFPE = 8,
SIGKILL = 9,
SIGUSR1 = 10,
SIGSEGV = 11,
SIGUSR2 = 12,
SIGPIPE = 13,
SIGALRM = 14,
SIGTERM = 15,
SIGSTKFLT = 16,
SIGCHLD = 17,
SIGCONT = 18,
SIGSTOP = 19,
SIGTSTP = 20,
SIGTTIN = 21,
SIGTTOU = 22,
SIGURG = 23,
SIGXCPU = 24,
SIGXFSZ = 25,
SIGVTALRM = 26,
SIGPROF = 27,
SIGWINCH = 28,
SIGIO = 29,
SIGPWR = 30,
SIGSYS = 31,
}
enum MacOSSignal {
SIGHUP = 1,
SIGINT = 2,
SIGQUIT = 3,
SIGILL = 4,
SIGTRAP = 5,
SIGABRT = 6,
SIGEMT = 7,
SIGFPE = 8,
SIGKILL = 9,
SIGBUS = 10,
SIGSEGV = 11,
SIGSYS = 12,
SIGPIPE = 13,
SIGALRM = 14,
SIGTERM = 15,
SIGURG = 16,
SIGSTOP = 17,
SIGTSTP = 18,
SIGCONT = 19,
SIGCHLD = 20,
SIGTTIN = 21,
SIGTTOU = 22,
SIGIO = 23,
SIGXCPU = 24,
SIGXFSZ = 25,
SIGVTALRM = 26,
SIGPROF = 27,
SIGWINCH = 28,
SIGINFO = 29,
SIGUSR1 = 30,
SIGUSR2 = 31,
}
/** **UNSTABLE**: Further changes required to make platform independent.
*
* Signals numbers. This is platform dependent. */
export const Signal: typeof MacOSSignal | typeof LinuxSignal;
/** **UNSTABLE**: new API, yet to be vetted.
*
* Represents the stream of signals, implements both `AsyncIterator` and
* `PromiseLike`. */
export class SignalStream
implements AsyncIterableIterator<void>, PromiseLike<void> {
constructor(signal: typeof Deno.Signal);
then<T, S>(
f: (v: void) => T | Promise<T>,
g?: (v: void) => S | Promise<S>,
): Promise<T | S>;
next(): Promise<IteratorResult<void>>;
[Symbol.asyncIterator](): AsyncIterableIterator<void>;
dispose(): void;
}
/** **UNSTABLE**: new API, yet to be vetted.
*
* Returns the stream of the given signal number. You can use it as an async
* iterator.
*
* ```ts
* for await (const _ of Deno.signal(Deno.Signal.SIGTERM)) {
* console.log("got SIGTERM!");
* }
* ```
*
* You can also use it as a promise. In this case you can only receive the
* first one.
*
* ```ts
* await Deno.signal(Deno.Signal.SIGTERM);
* console.log("SIGTERM received!")
* ```
*
* If you want to stop receiving the signals, you can use `.dispose()` method
* of the signal stream object.
*
* ```ts
* const sig = Deno.signal(Deno.Signal.SIGTERM);
* setTimeout(() => { sig.dispose(); }, 5000);
* for await (const _ of sig) {
* console.log("SIGTERM!")
* }
* ```
*
* The above for-await loop exits after 5 seconds when `sig.dispose()` is
* called.
*
* NOTE: This functionality is not yet implemented on Windows.
*/
export function signal(signo: number): SignalStream;
/** **UNSTABLE**: new API, yet to be vetted. */
export const signals: {
/** Returns the stream of SIGALRM signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGALRM)`. */
alarm: () => SignalStream;
/** Returns the stream of SIGCHLD signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGCHLD)`. */
child: () => SignalStream;
/** Returns the stream of SIGHUP signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGHUP)`. */
hungup: () => SignalStream;
/** Returns the stream of SIGINT signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGINT)`. */
interrupt: () => SignalStream;
/** Returns the stream of SIGIO signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGIO)`. */
io: () => SignalStream;
/** Returns the stream of SIGPIPE signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGPIPE)`. */
pipe: () => SignalStream;
/** Returns the stream of SIGQUIT signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGQUIT)`. */
quit: () => SignalStream;
/** Returns the stream of SIGTERM signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGTERM)`. */
terminate: () => SignalStream;
/** Returns the stream of SIGUSR1 signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGUSR1)`. */
userDefined1: () => SignalStream;
/** Returns the stream of SIGUSR2 signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGUSR2)`. */
userDefined2: () => SignalStream;
/** Returns the stream of SIGWINCH signals.
*
* This method is the shorthand for `Deno.signal(Deno.Signal.SIGWINCH)`. */
windowChange: () => SignalStream;
};
export type SetRawOptions = {
cbreak: boolean;
};
/** **UNSTABLE**: new API, yet to be vetted
*
* Set TTY to be under raw mode or not. In raw mode, characters are read and
* returned as is, without being processed. All special processing of
* characters by the terminal is disabled, including echoing input characters.
* Reading from a TTY device in raw mode is faster than reading from a TTY
* device in canonical mode.
*
* The `cbreak` option can be used to indicate that characters that correspond
* to a signal should still be generated. When disabling raw mode, this option
* is ignored. This functionality currently only works on Linux and Mac OS.
*
* ```ts
* Deno.setRaw(myTTY.rid, true, { cbreak: true });
* ```
*/
export function setRaw(
rid: number,
mode: boolean,
options?: SetRawOptions,
): void;
/** **UNSTABLE**: needs investigation into high precision time.
*
* Synchronously changes the access (`atime`) and modification (`mtime`) times
* of a file system object referenced by `path`. Given times are either in
* seconds (UNIX epoch time) or as `Date` objects.
*
* ```ts
* Deno.utimeSync("myfile.txt", 1556495550, new Date());
* ```
*
* Requires `allow-write` permission. */
export function utimeSync(
path: string,
atime: number | Date,
mtime: number | Date,
): void;
/** **UNSTABLE**: needs investigation into high precision time.
*
* Changes the access (`atime`) and modification (`mtime`) times of a file
* system object referenced by `path`. Given times are either in seconds
* (UNIX epoch time) or as `Date` objects.
*
* ```ts
* await Deno.utime("myfile.txt", 1556495550, new Date());
* ```
*
* Requires `allow-write` permission. */
export function utime(
path: string,
atime: number | Date,
mtime: number | Date,
): Promise<void>;
/** The type of the resource record.
* Only the listed types are supported currently. */
export type RecordType =
| "A"
| "AAAA"
| "ANAME"
| "CNAME"
| "MX"
| "PTR"
| "SRV"
| "TXT";
export interface ResolveDnsOptions {
/** The name server to be used for lookups.
* If not specified, defaults to the system configuration e.g. `/etc/resolv.conf` on Unix. */
nameServer?: {
/** The IP address of the name server */
ipAddr: string;
/** The port number the query will be sent to.
* If not specified, defaults to 53. */
port?: number;
};
}
/** If `resolveDns` is called with "MX" record type specified, it will return an array of this interface. */
export interface MXRecord {
preference: number;
exchange: string;
}
/** If `resolveDns` is called with "SRV" record type specified, it will return an array of this interface. */
export interface SRVRecord {
priority: number;
weight: number;
port: number;
target: string;
}
export function resolveDns(
query: string,
recordType: "A" | "AAAA" | "ANAME" | "CNAME" | "PTR",
options?: ResolveDnsOptions,
): Promise<string[]>;
export function resolveDns(
query: string,
recordType: "MX",
options?: ResolveDnsOptions,
): Promise<MXRecord[]>;
export function resolveDns(
query: string,
recordType: "SRV",
options?: ResolveDnsOptions,
): Promise<SRVRecord[]>;
export function resolveDns(
query: string,
recordType: "TXT",
options?: ResolveDnsOptions,
): Promise<string[][]>;
/** ** UNSTABLE**: new API, yet to be vetted.
*
* Performs DNS resolution against the given query, returning resolved records.
* Fails in the cases such as:
* - the query is in invalid format
* - the options have an invalid parameter, e.g. `nameServer.port` is beyond the range of 16-bit unsigned integer
* - timed out
*
* ```ts
* const a = await Deno.resolveDns("example.com", "A");
*
* const aaaa = await Deno.resolveDns("example.com", "AAAA", {
* nameServer: { ipAddr: "8.8.8.8", port: 1234 },
* });
* ```
*
* Requires `allow-net` permission.
*/
export function resolveDns(
query: string,
recordType: RecordType,
options?: ResolveDnsOptions,
): Promise<string[] | MXRecord[] | SRVRecord[] | string[][]>;
/** **UNSTABLE**: new API, yet to be vetted.
*
* A generic transport listener for message-oriented protocols. */
export interface DatagramConn extends AsyncIterable<[Uint8Array, Addr]> {
/** **UNSTABLE**: new API, yet to be vetted.
*
* Waits for and resolves to the next message to the `UDPConn`. */
receive(p?: Uint8Array): Promise<[Uint8Array, Addr]>;
/** UNSTABLE: new API, yet to be vetted.
*
* Sends a message to the target. */
send(p: Uint8Array, addr: Addr): Promise<number>;
/** UNSTABLE: new API, yet to be vetted.
*
* Close closes the socket. Any pending message promises will be rejected
* with errors. */
close(): void;
/** Return the address of the `UDPConn`. */
readonly addr: Addr;
[Symbol.asyncIterator](): AsyncIterableIterator<[Uint8Array, Addr]>;
}
export interface UnixListenOptions {
/** A Path to the Unix Socket. */
path: string;
}
/** **UNSTABLE**: new API, yet to be vetted.
*
* Listen announces on the local transport address.
*
* ```ts
* const listener = Deno.listen({ path: "/foo/bar.sock", transport: "unix" })
* ```
*
* Requires `allow-read` and `allow-write` permission. */
export function listen(
options: UnixListenOptions & { transport: "unix" },
): Listener;
/** **UNSTABLE**: new API, yet to be vetted
*
* Listen announces on the local transport address.
*
* ```ts
* const listener1 = Deno.listenDatagram({
* port: 80,
* transport: "udp"
* });
* const listener2 = Deno.listenDatagram({
* hostname: "golang.org",
* port: 80,
* transport: "udp"
* });
* ```
*
* Requires `allow-net` permission. */
export function listenDatagram(
options: ListenOptions & { transport: "udp" },
): DatagramConn;
/** **UNSTABLE**: new API, yet to be vetted
*
* Listen announces on the local transport address.
*
* ```ts
* const listener = Deno.listenDatagram({
* address: "/foo/bar.sock",
* transport: "unixpacket"
* });
* ```
*
* Requires `allow-read` and `allow-write` permission. */
export function listenDatagram(
options: UnixListenOptions & { transport: "unixpacket" },
): DatagramConn;
export interface UnixConnectOptions {
transport: "unix";
path: string;
}
/** **UNSTABLE**: The unix socket transport is unstable as a new API yet to
* be vetted. The TCP transport is considered stable.
*
* Connects to the hostname (default is "127.0.0.1") and port on the named
* transport (default is "tcp"), and resolves to the connection (`Conn`).
*
* ```ts
* const conn1 = await Deno.connect({ port: 80 });
* const conn2 = await Deno.connect({ hostname: "192.0.2.1", port: 80 });
* const conn3 = await Deno.connect({ hostname: "[2001:db8::1]", port: 80 });
* const conn4 = await Deno.connect({ hostname: "golang.org", port: 80, transport: "tcp" });
* const conn5 = await Deno.connect({ path: "/foo/bar.sock", transport: "unix" });
* ```
*
* Requires `allow-net` permission for "tcp" and `allow-read` for "unix". */
export function connect(
options: ConnectOptions | UnixConnectOptions,
): Promise<Conn>;
export interface StartTlsOptions {
/** A literal IP address or host name that can be resolved to an IP address.
* If not specified, defaults to `127.0.0.1`. */
hostname?: string;
/** Server certificate file. */
certFile?: string;
}
/** **UNSTABLE**: new API, yet to be vetted.
*
* Start TLS handshake from an existing connection using
* an optional cert file, hostname (default is "127.0.0.1"). The
* cert file is optional and if not included Mozilla's root certificates will
* be used (see also https://github.com/ctz/webpki-roots for specifics)
* Using this function requires that the other end of the connection is
* prepared for TLS handshake.
*
* ```ts
* const conn = await Deno.connect({ port: 80, hostname: "127.0.0.1" });
* const tlsConn = await Deno.startTls(conn, { certFile: "./certs/my_custom_root_CA.pem", hostname: "127.0.0.1", port: 80 });
* ```
*
* Requires `allow-net` permission.
*/
export function startTls(
conn: Conn,
options?: StartTlsOptions,
): Promise<Conn>;
/** **UNSTABLE**: The `signo` argument may change to require the Deno.Signal
* enum.
*
* Send a signal to process under given `pid`. This functionality currently
* only works on Linux and Mac OS.
*
* If `pid` is negative, the signal will be sent to the process group
* identified by `pid`.
*
* const p = Deno.run({
* cmd: ["sleep", "10000"]
* });
*
* Deno.kill(p.pid, Deno.Signal.SIGINT);
*
* Requires `allow-run` permission. */
export function kill(pid: number, signo: number): void;
/** The name of a "powerful feature" which needs permission.
*
* See: https://w3c.github.io/permissions/#permission-registry
*
* Note that the definition of `PermissionName` in the above spec is swapped
* out for a set of Deno permissions which are not web-compatible. */
export type PermissionName =
| "run"
| "read"
| "write"
| "net"
| "env"
| "plugin"
| "hrtime";
/** The current status of the permission.
*
* See: https://w3c.github.io/permissions/#status-of-a-permission */
export type PermissionState = "granted" | "denied" | "prompt";
export interface RunPermissionDescriptor {
name: "run";
}
export interface ReadPermissionDescriptor {
name: "read";
path?: string;
}
export interface WritePermissionDescriptor {
name: "write";
path?: string;
}
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";
}
export interface PluginPermissionDescriptor {
name: "plugin";
}
export interface HrtimePermissionDescriptor {
name: "hrtime";
}
/** Permission descriptors which define a permission and can be queried,
* requested, or revoked.
*
* See: https://w3c.github.io/permissions/#permission-descriptor */
export type PermissionDescriptor =
| RunPermissionDescriptor
| ReadPermissionDescriptor
| WritePermissionDescriptor
| NetPermissionDescriptor
| EnvPermissionDescriptor
| PluginPermissionDescriptor
| HrtimePermissionDescriptor;
export class Permissions {
/** Resolves to the current status of a permission.
*
* ```ts
* const status = await Deno.permissions.query({ name: "read", path: "/etc" });
* if (status.state === "granted") {
* data = await Deno.readFile("/etc/passwd");
* }
* ```
*/
query(desc: PermissionDescriptor): Promise<PermissionStatus>;
/** Revokes a permission, and resolves to the state of the permission.
*
* 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>;
}
/** **UNSTABLE**: Under consideration to move to `navigator.permissions` to
* match web API. It could look like `navigator.permissions.query({ name: Deno.symbols.read })`.
*/
export const permissions: Permissions;
/** see: https://w3c.github.io/permissions/#permissionstatus */
export class PermissionStatus {
state: PermissionState;
constructor();
}
/** **UNSTABLE**: New API, yet to be vetted. Additional consideration is still
* necessary around the permissions required.
*
* Get the `hostname` of the machine the Deno process is running on.
*
* ```ts
* console.log(Deno.hostname());
* ```
*
* Requires `allow-env` permission.
*/
export function hostname(): string;
/** **UNSTABLE**: new API, yet to be vetted.
* 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.
*
* ```ts
* // truncate the entire file
* const file = Deno.open("my_file.txt", { read: true, write: true, truncate: true, create: true });
* Deno.ftruncateSync(file.rid);
*
* // truncate part of the file
* const file = Deno.open("my_file.txt", { read: true, write: true, create: true });
* Deno.write(file.rid, new TextEncoder().encode("Hello World"));
* Deno.ftruncateSync(file.rid, 7);
* 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;
/** **UNSTABLE**: new API, yet to be vetted.
* Truncates or extends the specified file stream, to reach the specified `len`. If
* `len` is not specified then the entire file contents are truncated.
*
* ```ts
* // truncate the entire file
* const file = Deno.open("my_file.txt", { read: true, write: true, create: true });
* await Deno.ftruncate(file.rid);
*
* // truncate part of the file
* const file = 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>;
/** **UNSTABLE**: New API, yet to be vetted.
* Synchronously returns a `Deno.FileInfo` for the given file stream.
*
* ```ts
* const file = Deno.openSync("file.txt", { read: true });
* const fileInfo = Deno.fstatSync(file.rid);
* assert(fileInfo.isFile);
* ```
*/
export function fstatSync(rid: number): FileInfo;
/** **UNSTABLE**: New API, yet to be vetted.
* Returns a `Deno.FileInfo` for the given file stream.
*
* ```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>;
/** **UNSTABLE**: New API, yet to be vetted.
* The pid of the current process's parent.
*/
export const ppid: number;
/** **UNSTABLE**: New API, yet to be vetted.
* A custom HttpClient for use with `fetch`.
*
* ```ts
* const client = new Deno.createHttpClient({ caFile: "./ca.pem" });
* const req = await fetch("https://myserver.com", { client });
* ```
*/
export class HttpClient {
rid: number;
close(): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
* The options used when creating a [HttpClient].
*/
interface CreateHttpClientOptions {
/** A certificate authority to use when validating TLS certificates. Certificate data must be PEM encoded.
*/
caData?: string;
}
/** **UNSTABLE**: New API, yet to be vetted.
* Create a custom HttpClient for to use with `fetch`.
*
* ```ts
* const client = new Deno.createHttpClient({ caFile: "./ca.pem" });
* const req = await fetch("https://myserver.com", { client });
* ```
*/
export function createHttpClient(
options: CreateHttpClientOptions,
): HttpClient;
/** **UNSTABLE**: needs investigation into high precision time.
*
* Synchronously changes the access (`atime`) and modification (`mtime`) times
* of a file stream resource referenced by `rid`. Given times are either in
* seconds (UNIX epoch time) or as `Date` objects.
*
* ```ts
* const file = Deno.openSync("file.txt", { create: true });
* Deno.futimeSync(file.rid, 1556495550, new Date());
* ```
*/
export function futimeSync(
rid: number,
atime: number | Date,
mtime: number | Date,
): void;
/** **UNSTABLE**: needs investigation into high precision time.
*
* Changes the access (`atime`) and modification (`mtime`) times of a file
* stream resource referenced by `rid`. Given times are either in seconds
* (UNIX epoch time) or as `Date` objects.
*
* ```ts
* const file = await Deno.open("file.txt", { create: true });
* await Deno.futime(file.rid, 1556495550, new Date());
* ```
*/
export function futime(
rid: number,
atime: number | Date,
mtime: number | Date,
): Promise<void>;
/** *UNSTABLE**: new API, yet to be vetted.
*
* SleepSync puts the main thread to sleep synchronously for a given amount of
* time in milliseconds.
*
* ```ts
* Deno.sleepSync(10);
* ```
*/
export function sleepSync(millis: number): Promise<void>;
}
declare function fetch(
input: Request | URL | string,
init?: RequestInit & { client: Deno.HttpClient },
): Promise<Response>;
declare interface WorkerOptions {
/** UNSTABLE: New API.
*
* Set deno.namespace to `true` to make `Deno` namespace and all of its
* methods available to the worker environment. Defaults to `false`.
*
* Configure deno.permissions options to change the level of access the worker will
* have. By default it will inherit the permissions of its parent thread. The permissions
* of a worker can't be extended beyond its parent's permissions reach.
* - "inherit" will take the permissions of the thread the worker is created in
* - You can disable/enable permissions all together by passing a boolean
* - You can provide a list of routes relative to the file the worker
* is created in to limit the access of the worker (read/write permissions only)
*
* Example:
*
* ```ts
* // mod.ts
* const worker = new Worker(
* new URL("deno_worker.ts", import.meta.url).href, {
* type: "module",
* deno: {
* namespace: true,
* permissions: {
* read: true,
* },
* },
* }
* );
* worker.postMessage({ cmd: "readFile", fileName: "./log.txt" });
*
* // deno_worker.ts
*
*
* self.onmessage = async function (e) {
* const { cmd, fileName } = e.data;
* if (cmd !== "readFile") {
* throw new Error("Invalid command");
* }
* const buf = await Deno.readFile(fileName);
* const fileContents = new TextDecoder().decode(buf);
* console.log(fileContents);
* }
*
* // $ cat log.txt
* // hello world
* // hello world 2
*
* // $ deno run --allow-read mod.ts
* // hello world
* // hello world2
* ```
*/
// TODO(Soremwar)
// `deno: boolean` is kept for backwards compatibility with the previous
// worker options implementation. Remove for 2.0.
deno?: boolean | {
namespace?: boolean;
/** Set to `"none"` to disable all the permissions in the worker. */
permissions?: "inherit" | "none" | {
env?: "inherit" | boolean;
hrtime?: "inherit" | boolean;
/** The format of the net access list must be `hostname[:port]`
* in order to be resolved.
*
* ```
* net: ["https://deno.land", "localhost:8080"],
* ```
* */
net?: "inherit" | boolean | string[];
plugin?: "inherit" | boolean;
read?: "inherit" | boolean | Array<string | URL>;
run?: "inherit" | boolean;
write?: "inherit" | boolean | Array<string | URL>;
};
};
}
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