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2185 lines
84 KiB
2185 lines
84 KiB
12 months ago
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// from https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/node/util.d.ts
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/**
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* The `node:util` module supports the needs of Node.js internal APIs. Many of the
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* utilities are useful for application and module developers as well. To access
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* it:
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*
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* ```js
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* const util = require('node:util');
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* ```
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* @see [source](https://github.com/nodejs/node/blob/v20.2.0/lib/util.js)
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*/
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declare module "util" {
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import * as types from "node:util/types";
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export interface InspectOptions {
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/**
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* If `true`, object's non-enumerable symbols and properties are included in the formatted result.
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* `WeakMap` and `WeakSet` entries are also included as well as user defined prototype properties (excluding method properties).
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* @default false
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*/
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showHidden?: boolean | undefined;
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/**
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* Specifies the number of times to recurse while formatting object.
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* This is useful for inspecting large objects.
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* To recurse up to the maximum call stack size pass `Infinity` or `null`.
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* @default 2
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*/
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depth?: number | null | undefined;
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/**
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* If `true`, the output is styled with ANSI color codes. Colors are customizable.
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*/
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colors?: boolean | undefined;
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/**
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* If `false`, `[util.inspect.custom](depth, opts, inspect)` functions are not invoked.
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* @default true
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*/
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customInspect?: boolean | undefined;
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/**
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* If `true`, `Proxy` inspection includes the target and handler objects.
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* @default false
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*/
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showProxy?: boolean | undefined;
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/**
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* Specifies the maximum number of `Array`, `TypedArray`, `WeakMap`, and `WeakSet` elements
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* to include when formatting. Set to `null` or `Infinity` to show all elements.
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* Set to `0` or negative to show no elements.
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* @default 100
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*/
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maxArrayLength?: number | null | undefined;
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/**
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* Specifies the maximum number of characters to
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* include when formatting. Set to `null` or `Infinity` to show all elements.
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* Set to `0` or negative to show no characters.
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* @default 10000
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*/
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maxStringLength?: number | null | undefined;
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/**
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* The length at which input values are split across multiple lines.
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* Set to `Infinity` to format the input as a single line
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* (in combination with `compact` set to `true` or any number >= `1`).
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* @default 80
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*/
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breakLength?: number | undefined;
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/**
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* Setting this to `false` causes each object key
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* to be displayed on a new line. It will also add new lines to text that is
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* longer than `breakLength`. If set to a number, the most `n` inner elements
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* are united on a single line as long as all properties fit into
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* `breakLength`. Short array elements are also grouped together. Note that no
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* text will be reduced below 16 characters, no matter the `breakLength` size.
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* For more information, see the example below.
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* @default true
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*/
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compact?: boolean | number | undefined;
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/**
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* If set to `true` or a function, all properties of an object, and `Set` and `Map`
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* entries are sorted in the resulting string.
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* If set to `true` the default sort is used.
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* If set to a function, it is used as a compare function.
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*/
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sorted?: boolean | ((a: string, b: string) => number) | undefined;
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/**
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* If set to `true`, getters are going to be
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* inspected as well. If set to `'get'` only getters without setter are going
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* to be inspected. If set to `'set'` only getters having a corresponding
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* setter are going to be inspected. This might cause side effects depending on
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* the getter function.
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* @default false
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*/
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getters?: "get" | "set" | boolean | undefined;
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/**
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* If set to `true`, an underscore is used to separate every three digits in all bigints and numbers.
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* @default false
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*/
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numericSeparator?: boolean | undefined;
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}
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export type Style =
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| "special"
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| "number"
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| "bigint"
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| "boolean"
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| "undefined"
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| "null"
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| "string"
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| "symbol"
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| "date"
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| "regexp"
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| "module";
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export type CustomInspectFunction = (depth: number, options: InspectOptionsStylized) => any; // TODO: , inspect: inspect
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export interface InspectOptionsStylized extends InspectOptions {
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stylize(text: string, styleType: Style): string;
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}
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/**
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* The `util.format()` method returns a formatted string using the first argument
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* as a `printf`\-like format string which can contain zero or more format
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* specifiers. Each specifier is replaced with the converted value from the
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* corresponding argument. Supported specifiers are:
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*
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* If a specifier does not have a corresponding argument, it is not replaced:
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*
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* ```js
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* util.format('%s:%s', 'foo');
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* // Returns: 'foo:%s'
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* ```
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*
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* Values that are not part of the format string are formatted using`util.inspect()` if their type is not `string`.
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*
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* If there are more arguments passed to the `util.format()` method than the
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* number of specifiers, the extra arguments are concatenated to the returned
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* string, separated by spaces:
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*
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* ```js
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* util.format('%s:%s', 'foo', 'bar', 'baz');
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* // Returns: 'foo:bar baz'
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* ```
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*
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* If the first argument does not contain a valid format specifier, `util.format()`returns a string that is the concatenation of all arguments separated by spaces:
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*
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* ```js
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* util.format(1, 2, 3);
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* // Returns: '1 2 3'
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* ```
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*
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* If only one argument is passed to `util.format()`, it is returned as it is
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* without any formatting:
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*
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* ```js
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* util.format('%% %s');
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* // Returns: '%% %s'
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* ```
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*
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* `util.format()` is a synchronous method that is intended as a debugging tool.
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* Some input values can have a significant performance overhead that can block the
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* event loop. Use this function with care and never in a hot code path.
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* @since v0.5.3
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* @param format A `printf`-like format string.
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*/
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export function format(format?: any, ...param: any[]): string;
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/**
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* This function is identical to {@link format}, except in that it takes
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* an `inspectOptions` argument which specifies options that are passed along to {@link inspect}.
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*
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* ```js
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* util.formatWithOptions({ colors: true }, 'See object %O', { foo: 42 });
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* // Returns 'See object { foo: 42 }', where `42` is colored as a number
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* // when printed to a terminal.
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* ```
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* @since v10.0.0
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*/
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export function formatWithOptions(inspectOptions: InspectOptions, format?: any, ...param: any[]): string;
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/**
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* Returns the string name for a numeric error code that comes from a Node.js API.
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* The mapping between error codes and error names is platform-dependent.
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* See `Common System Errors` for the names of common errors.
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*
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* ```js
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* fs.access('file/that/does/not/exist', (err) => {
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* const name = util.getSystemErrorName(err.errno);
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* console.error(name); // ENOENT
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* });
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* ```
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* @since v9.7.0
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*/
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export function getSystemErrorName(err: number): string;
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/**
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* Returns a Map of all system error codes available from the Node.js API.
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* The mapping between error codes and error names is platform-dependent.
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* See `Common System Errors` for the names of common errors.
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*
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* ```js
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* fs.access('file/that/does/not/exist', (err) => {
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* const errorMap = util.getSystemErrorMap();
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* const name = errorMap.get(err.errno);
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* console.error(name); // ENOENT
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* });
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* ```
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* @since v16.0.0, v14.17.0
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*/
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export function getSystemErrorMap(): Map<number, [string, string]>;
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/**
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* The `util.log()` method prints the given `string` to `stdout` with an included
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* timestamp.
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*
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* ```js
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* const util = require('node:util');
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*
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* util.log('Timestamped message.');
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* ```
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* @since v0.3.0
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* @deprecated Since v6.0.0 - Use a third party module instead.
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*/
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export function log(string: string): void;
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/**
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* Returns the `string` after replacing any surrogate code points
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* (or equivalently, any unpaired surrogate code units) with the
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* Unicode "replacement character" U+FFFD.
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* @since v16.8.0, v14.18.0
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*/
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export function toUSVString(string: string): string;
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/**
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* Creates and returns an `AbortController` instance whose `AbortSignal` is marked
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* as transferable and can be used with `structuredClone()` or `postMessage()`.
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* @since v18.11.0
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* @experimental
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* @returns A transferable AbortController
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*/
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export function transferableAbortController(): AbortController;
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/**
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* Marks the given `AbortSignal` as transferable so that it can be used with`structuredClone()` and `postMessage()`.
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*
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* ```js
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* const signal = transferableAbortSignal(AbortSignal.timeout(100));
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* const channel = new MessageChannel();
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* channel.port2.postMessage(signal, [signal]);
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* ```
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* @since v18.11.0
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* @experimental
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* @param signal The AbortSignal
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* @returns The same AbortSignal
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*/
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export function transferableAbortSignal(signal: AbortSignal): AbortSignal;
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/**
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* Listens to abort event on the provided `signal` and
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* returns a promise that is fulfilled when the `signal` is
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* aborted. If the passed `resource` is garbage collected before the `signal` is
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* aborted, the returned promise shall remain pending indefinitely.
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*
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* ```js
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* import { aborted } from 'node:util';
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*
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* const dependent = obtainSomethingAbortable();
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*
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* aborted(dependent.signal, dependent).then(() => {
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* // Do something when dependent is aborted.
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* });
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*
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* dependent.on('event', () => {
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* dependent.abort();
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* });
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* ```
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* @since v19.7.0
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* @experimental
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* @param resource Any non-null entity, reference to which is held weakly.
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*/
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export function aborted(signal: AbortSignal, resource: any): Promise<void>;
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/**
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* The `util.inspect()` method returns a string representation of `object` that is
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* intended for debugging. The output of `util.inspect` may change at any time
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* and should not be depended upon programmatically. Additional `options` may be
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* passed that alter the result.`util.inspect()` will use the constructor's name and/or `@@toStringTag` to make
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* an identifiable tag for an inspected value.
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*
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* ```js
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* class Foo {
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* get [Symbol.toStringTag]() {
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* return 'bar';
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* }
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* }
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*
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* class Bar {}
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*
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* const baz = Object.create(null, { [Symbol.toStringTag]: { value: 'foo' } });
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*
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* util.inspect(new Foo()); // 'Foo [bar] {}'
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* util.inspect(new Bar()); // 'Bar {}'
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* util.inspect(baz); // '[foo] {}'
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* ```
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*
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* Circular references point to their anchor by using a reference index:
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*
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|
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* ```js
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* const { inspect } = require('node:util');
|
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|
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*
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* const obj = {};
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* obj.a = [obj];
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* obj.b = {};
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* obj.b.inner = obj.b;
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* obj.b.obj = obj;
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|
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*
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* console.log(inspect(obj));
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* // <ref *1> {
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* // a: [ [Circular *1] ],
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* // b: <ref *2> { inner: [Circular *2], obj: [Circular *1] }
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||
|
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* // }
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||
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* ```
|
||
|
|
*
|
||
|
|
* The following example inspects all properties of the `util` object:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
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* console.log(util.inspect(util, { showHidden: true, depth: null }));
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||
|
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* ```
|
||
|
|
*
|
||
|
|
* The following example highlights the effect of the `compact` option:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
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|
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* const o = {
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||
|
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* a: [1, 2, [[
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||
|
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* 'Lorem ipsum dolor sit amet,\nconsectetur adipiscing elit, sed do ' +
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* 'eiusmod \ntempor incididunt ut labore et dolore magna aliqua.',
|
||
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* 'test',
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||
|
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* 'foo']], 4],
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* b: new Map([['za', 1], ['zb', 'test']]),
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* };
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||
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* console.log(util.inspect(o, { compact: true, depth: 5, breakLength: 80 }));
|
||
|
|
*
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||
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* // { a:
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||
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* // [ 1,
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||
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* // 2,
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||
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* // [ [ 'Lorem ipsum dolor sit amet,\nconsectetur [...]', // A long line
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* // 'test',
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* // 'foo' ] ],
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* // 4 ],
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* // b: Map(2) { 'za' => 1, 'zb' => 'test' } }
|
||
|
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*
|
||
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* // Setting `compact` to false or an integer creates more reader friendly output.
|
||
|
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* console.log(util.inspect(o, { compact: false, depth: 5, breakLength: 80 }));
|
||
|
|
*
|
||
|
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* // {
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||
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* // a: [
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||
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* // 1,
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||
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* // 2,
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||
|
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* // [
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||
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* // [
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||
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* // 'Lorem ipsum dolor sit amet,\n' +
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* // 'consectetur adipiscing elit, sed do eiusmod \n' +
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||
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* // 'tempor incididunt ut labore et dolore magna aliqua.',
|
||
|
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* // 'test',
|
||
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* // 'foo'
|
||
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* // ]
|
||
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* // ],
|
||
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* // 4
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||
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* // ],
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||
|
|
* // b: Map(2) {
|
||
|
|
* // 'za' => 1,
|
||
|
|
* // 'zb' => 'test'
|
||
|
|
* // }
|
||
|
|
* // }
|
||
|
|
*
|
||
|
|
* // Setting `breakLength` to e.g. 150 will print the "Lorem ipsum" text in a
|
||
|
|
* // single line.
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* The `showHidden` option allows [`WeakMap`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) and
|
||
|
|
* [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) entries to be
|
||
|
|
* inspected. If there are more entries than `maxArrayLength`, there is no
|
||
|
|
* guarantee which entries are displayed. That means retrieving the same [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) entries twice may
|
||
|
|
* result in different output. Furthermore, entries
|
||
|
|
* with no remaining strong references may be garbage collected at any time.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const { inspect } = require('node:util');
|
||
|
|
*
|
||
|
|
* const obj = { a: 1 };
|
||
|
|
* const obj2 = { b: 2 };
|
||
|
|
* const weakSet = new WeakSet([obj, obj2]);
|
||
|
|
*
|
||
|
|
* console.log(inspect(weakSet, { showHidden: true }));
|
||
|
|
* // WeakSet { { a: 1 }, { b: 2 } }
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* The `sorted` option ensures that an object's property insertion order does not
|
||
|
|
* impact the result of `util.inspect()`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const { inspect } = require('node:util');
|
||
|
|
* const assert = require('node:assert');
|
||
|
|
*
|
||
|
|
* const o1 = {
|
||
|
|
* b: [2, 3, 1],
|
||
|
|
* a: '`a` comes before `b`',
|
||
|
|
* c: new Set([2, 3, 1]),
|
||
|
|
* };
|
||
|
|
* console.log(inspect(o1, { sorted: true }));
|
||
|
|
* // { a: '`a` comes before `b`', b: [ 2, 3, 1 ], c: Set(3) { 1, 2, 3 } }
|
||
|
|
* console.log(inspect(o1, { sorted: (a, b) => b.localeCompare(a) }));
|
||
|
|
* // { c: Set(3) { 3, 2, 1 }, b: [ 2, 3, 1 ], a: '`a` comes before `b`' }
|
||
|
|
*
|
||
|
|
* const o2 = {
|
||
|
|
* c: new Set([2, 1, 3]),
|
||
|
|
* a: '`a` comes before `b`',
|
||
|
|
* b: [2, 3, 1],
|
||
|
|
* };
|
||
|
|
* assert.strict.equal(
|
||
|
|
* inspect(o1, { sorted: true }),
|
||
|
|
* inspect(o2, { sorted: true }),
|
||
|
|
* );
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* The `numericSeparator` option adds an underscore every three digits to all
|
||
|
|
* numbers.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const { inspect } = require('node:util');
|
||
|
|
*
|
||
|
|
* const thousand = 1_000;
|
||
|
|
* const million = 1_000_000;
|
||
|
|
* const bigNumber = 123_456_789n;
|
||
|
|
* const bigDecimal = 1_234.123_45;
|
||
|
|
*
|
||
|
|
* console.log(inspect(thousand, { numericSeparator: true }));
|
||
|
|
* // 1_000
|
||
|
|
* console.log(inspect(million, { numericSeparator: true }));
|
||
|
|
* // 1_000_000
|
||
|
|
* console.log(inspect(bigNumber, { numericSeparator: true }));
|
||
|
|
* // 123_456_789n
|
||
|
|
* console.log(inspect(bigDecimal, { numericSeparator: true }));
|
||
|
|
* // 1_234.123_45
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* `util.inspect()` is a synchronous method intended for debugging. Its maximum
|
||
|
|
* output length is approximately 128 MiB. Inputs that result in longer output will
|
||
|
|
* be truncated.
|
||
|
|
* @since v0.3.0
|
||
|
|
* @param object Any JavaScript primitive or `Object`.
|
||
|
|
* @return The representation of `object`.
|
||
|
|
*/
|
||
|
|
export function inspect(object: any, showHidden?: boolean, depth?: number | null, color?: boolean): string;
|
||
|
|
export function inspect(object: any, options?: InspectOptions): string;
|
||
|
|
export namespace inspect {
|
||
|
|
let colors: NodeJS.Dict<[number, number]>;
|
||
|
|
let styles: {
|
||
|
|
[K in Style]: string;
|
||
|
|
};
|
||
|
|
let defaultOptions: InspectOptions;
|
||
|
|
/**
|
||
|
|
* Allows changing inspect settings from the repl.
|
||
|
|
*/
|
||
|
|
let replDefaults: InspectOptions;
|
||
|
|
/**
|
||
|
|
* That can be used to declare custom inspect functions.
|
||
|
|
*/
|
||
|
|
const custom: unique symbol;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Alias for [`Array.isArray()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray).
|
||
|
|
*
|
||
|
|
* Returns `true` if the given `object` is an `Array`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isArray([]);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isArray(new Array());
|
||
|
|
* // Returns: true
|
||
|
|
* util.isArray({});
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.6.0
|
||
|
|
* @deprecated Since v4.0.0 - Use `isArray` instead.
|
||
|
|
*/
|
||
|
|
export function isArray(object: unknown): object is unknown[];
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `RegExp`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isRegExp(/some regexp/);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isRegExp(new RegExp('another regexp'));
|
||
|
|
* // Returns: true
|
||
|
|
* util.isRegExp({});
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.6.0
|
||
|
|
* @deprecated Since v4.0.0 - Deprecated
|
||
|
|
*/
|
||
|
|
export function isRegExp(object: unknown): object is RegExp;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `Date`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isDate(new Date());
|
||
|
|
* // Returns: true
|
||
|
|
* util.isDate(Date());
|
||
|
|
* // false (without 'new' returns a String)
|
||
|
|
* util.isDate({});
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.6.0
|
||
|
|
* @deprecated Since v4.0.0 - Use {@link types.isDate} instead.
|
||
|
|
*/
|
||
|
|
export function isDate(object: unknown): object is Date;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is an `Error`. Otherwise, returns`false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isError(new Error());
|
||
|
|
* // Returns: true
|
||
|
|
* util.isError(new TypeError());
|
||
|
|
* // Returns: true
|
||
|
|
* util.isError({ name: 'Error', message: 'an error occurred' });
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* This method relies on `Object.prototype.toString()` behavior. It is
|
||
|
|
* possible to obtain an incorrect result when the `object` argument manipulates`@@toStringTag`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* const obj = { name: 'Error', message: 'an error occurred' };
|
||
|
|
*
|
||
|
|
* util.isError(obj);
|
||
|
|
* // Returns: false
|
||
|
|
* obj[Symbol.toStringTag] = 'Error';
|
||
|
|
* util.isError(obj);
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.6.0
|
||
|
|
* @deprecated Since v4.0.0 - Use {@link types.isNativeError} instead.
|
||
|
|
*/
|
||
|
|
export function isError(object: unknown): object is Error;
|
||
|
|
/**
|
||
|
|
* Usage of `util.inherits()` is discouraged. Please use the ES6 `class` and`extends` keywords to get language level inheritance support. Also note
|
||
|
|
* that the two styles are [semantically incompatible](https://github.com/nodejs/node/issues/4179).
|
||
|
|
*
|
||
|
|
* Inherit the prototype methods from one [constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor) into another. The
|
||
|
|
* prototype of `constructor` will be set to a new object created from`superConstructor`.
|
||
|
|
*
|
||
|
|
* This mainly adds some input validation on top of`Object.setPrototypeOf(constructor.prototype, superConstructor.prototype)`.
|
||
|
|
* As an additional convenience, `superConstructor` will be accessible
|
||
|
|
* through the `constructor.super_` property.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* const EventEmitter = require('node:events');
|
||
|
|
*
|
||
|
|
* function MyStream() {
|
||
|
|
* EventEmitter.call(this);
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* util.inherits(MyStream, EventEmitter);
|
||
|
|
*
|
||
|
|
* MyStream.prototype.write = function(data) {
|
||
|
|
* this.emit('data', data);
|
||
|
|
* };
|
||
|
|
*
|
||
|
|
* const stream = new MyStream();
|
||
|
|
*
|
||
|
|
* console.log(stream instanceof EventEmitter); // true
|
||
|
|
* console.log(MyStream.super_ === EventEmitter); // true
|
||
|
|
*
|
||
|
|
* stream.on('data', (data) => {
|
||
|
|
* console.log(`Received data: "${data}"`);
|
||
|
|
* });
|
||
|
|
* stream.write('It works!'); // Received data: "It works!"
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* ES6 example using `class` and `extends`:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const EventEmitter = require('node:events');
|
||
|
|
*
|
||
|
|
* class MyStream extends EventEmitter {
|
||
|
|
* write(data) {
|
||
|
|
* this.emit('data', data);
|
||
|
|
* }
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* const stream = new MyStream();
|
||
|
|
*
|
||
|
|
* stream.on('data', (data) => {
|
||
|
|
* console.log(`Received data: "${data}"`);
|
||
|
|
* });
|
||
|
|
* stream.write('With ES6');
|
||
|
|
* ```
|
||
|
|
* @since v0.3.0
|
||
|
|
* @legacy Use ES2015 class syntax and `extends` keyword instead.
|
||
|
|
*/
|
||
|
|
export function inherits(constructor: unknown, superConstructor: unknown): void;
|
||
|
|
export type DebugLoggerFunction = (msg: string, ...param: unknown[]) => void;
|
||
|
|
export interface DebugLogger extends DebugLoggerFunction {
|
||
|
|
enabled: boolean;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* The `util.debuglog()` method is used to create a function that conditionally
|
||
|
|
* writes debug messages to `stderr` based on the existence of the `NODE_DEBUG`environment variable. If the `section` name appears within the value of that
|
||
|
|
* environment variable, then the returned function operates similar to `console.error()`. If not, then the returned function is a no-op.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* const debuglog = util.debuglog('foo');
|
||
|
|
*
|
||
|
|
* debuglog('hello from foo [%d]', 123);
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* If this program is run with `NODE_DEBUG=foo` in the environment, then
|
||
|
|
* it will output something like:
|
||
|
|
*
|
||
|
|
* ```console
|
||
|
|
* FOO 3245: hello from foo [123]
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* where `3245` is the process id. If it is not run with that
|
||
|
|
* environment variable set, then it will not print anything.
|
||
|
|
*
|
||
|
|
* The `section` supports wildcard also:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* const debuglog = util.debuglog('foo-bar');
|
||
|
|
*
|
||
|
|
* debuglog('hi there, it\'s foo-bar [%d]', 2333);
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* if it is run with `NODE_DEBUG=foo*` in the environment, then it will output
|
||
|
|
* something like:
|
||
|
|
*
|
||
|
|
* ```console
|
||
|
|
* FOO-BAR 3257: hi there, it's foo-bar [2333]
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* Multiple comma-separated `section` names may be specified in the `NODE_DEBUG`environment variable: `NODE_DEBUG=fs,net,tls`.
|
||
|
|
*
|
||
|
|
* The optional `callback` argument can be used to replace the logging function
|
||
|
|
* with a different function that doesn't have any initialization or
|
||
|
|
* unnecessary wrapping.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* let debuglog = util.debuglog('internals', (debug) => {
|
||
|
|
* // Replace with a logging function that optimizes out
|
||
|
|
* // testing if the section is enabled
|
||
|
|
* debuglog = debug;
|
||
|
|
* });
|
||
|
|
* ```
|
||
|
|
* @since v0.11.3
|
||
|
|
* @param section A string identifying the portion of the application for which the `debuglog` function is being created.
|
||
|
|
* @param callback A callback invoked the first time the logging function is called with a function argument that is a more optimized logging function.
|
||
|
|
* @return The logging function
|
||
|
|
*/
|
||
|
|
export function debuglog(section: string, callback?: (fn: DebugLoggerFunction) => void): DebugLogger;
|
||
|
|
export const debug: typeof debuglog;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `Boolean`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isBoolean(1);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isBoolean(0);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isBoolean(false);
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `typeof value === 'boolean'` instead.
|
||
|
|
*/
|
||
|
|
export function isBoolean(object: unknown): object is boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `Buffer`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isBuffer({ length: 0 });
|
||
|
|
* // Returns: false
|
||
|
|
* util.isBuffer([]);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isBuffer(Buffer.from('hello world'));
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `isBuffer` instead.
|
||
|
|
*/
|
||
|
|
export function isBuffer(object: unknown): object is Buffer;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `Function`. Otherwise, returns`false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* function Foo() {}
|
||
|
|
* const Bar = () => {};
|
||
|
|
*
|
||
|
|
* util.isFunction({});
|
||
|
|
* // Returns: false
|
||
|
|
* util.isFunction(Foo);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isFunction(Bar);
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `typeof value === 'function'` instead.
|
||
|
|
*/
|
||
|
|
export function isFunction(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is strictly `null`. Otherwise, returns`false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isNull(0);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isNull(undefined);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isNull(null);
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `value === null` instead.
|
||
|
|
*/
|
||
|
|
export function isNull(object: unknown): object is null;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is `null` or `undefined`. Otherwise,
|
||
|
|
* returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isNullOrUndefined(0);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isNullOrUndefined(undefined);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isNullOrUndefined(null);
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `value === undefined || value === null` instead.
|
||
|
|
*/
|
||
|
|
export function isNullOrUndefined(object: unknown): object is null | undefined;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `Number`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isNumber(false);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isNumber(Infinity);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isNumber(0);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isNumber(NaN);
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `typeof value === 'number'` instead.
|
||
|
|
*/
|
||
|
|
export function isNumber(object: unknown): object is number;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is strictly an `Object`**and** not a`Function` (even though functions are objects in JavaScript).
|
||
|
|
* Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isObject(5);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isObject(null);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isObject({});
|
||
|
|
* // Returns: true
|
||
|
|
* util.isObject(() => {});
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `value !== null && typeof value === 'object'` instead.
|
||
|
|
*/
|
||
|
|
export function isObject(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a primitive type. Otherwise, returns`false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isPrimitive(5);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isPrimitive('foo');
|
||
|
|
* // Returns: true
|
||
|
|
* util.isPrimitive(false);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isPrimitive(null);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isPrimitive(undefined);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isPrimitive({});
|
||
|
|
* // Returns: false
|
||
|
|
* util.isPrimitive(() => {});
|
||
|
|
* // Returns: false
|
||
|
|
* util.isPrimitive(/^$/);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isPrimitive(new Date());
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `(typeof value !== 'object' && typeof value !== 'function') || value === null` instead.
|
||
|
|
*/
|
||
|
|
export function isPrimitive(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `string`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isString('');
|
||
|
|
* // Returns: true
|
||
|
|
* util.isString('foo');
|
||
|
|
* // Returns: true
|
||
|
|
* util.isString(String('foo'));
|
||
|
|
* // Returns: true
|
||
|
|
* util.isString(5);
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `typeof value === 'string'` instead.
|
||
|
|
*/
|
||
|
|
export function isString(object: unknown): object is string;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is a `Symbol`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* util.isSymbol(5);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isSymbol('foo');
|
||
|
|
* // Returns: false
|
||
|
|
* util.isSymbol(Symbol('foo'));
|
||
|
|
* // Returns: true
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `typeof value === 'symbol'` instead.
|
||
|
|
*/
|
||
|
|
export function isSymbol(object: unknown): object is symbol;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the given `object` is `undefined`. Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* const foo = undefined;
|
||
|
|
* util.isUndefined(5);
|
||
|
|
* // Returns: false
|
||
|
|
* util.isUndefined(foo);
|
||
|
|
* // Returns: true
|
||
|
|
* util.isUndefined(null);
|
||
|
|
* // Returns: false
|
||
|
|
* ```
|
||
|
|
* @since v0.11.5
|
||
|
|
* @deprecated Since v4.0.0 - Use `value === undefined` instead.
|
||
|
|
*/
|
||
|
|
export function isUndefined(object: unknown): object is undefined;
|
||
|
|
/**
|
||
|
|
* The `util.deprecate()` method wraps `fn` (which may be a function or class) in
|
||
|
|
* such a way that it is marked as deprecated.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* exports.obsoleteFunction = util.deprecate(() => {
|
||
|
|
* // Do something here.
|
||
|
|
* }, 'obsoleteFunction() is deprecated. Use newShinyFunction() instead.');
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* When called, `util.deprecate()` will return a function that will emit a`DeprecationWarning` using the `'warning'` event. The warning will
|
||
|
|
* be emitted and printed to `stderr` the first time the returned function is
|
||
|
|
* called. After the warning is emitted, the wrapped function is called without
|
||
|
|
* emitting a warning.
|
||
|
|
*
|
||
|
|
* If the same optional `code` is supplied in multiple calls to `util.deprecate()`,
|
||
|
|
* the warning will be emitted only once for that `code`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* const fn1 = util.deprecate(someFunction, someMessage, 'DEP0001');
|
||
|
|
* const fn2 = util.deprecate(someOtherFunction, someOtherMessage, 'DEP0001');
|
||
|
|
* fn1(); // Emits a deprecation warning with code DEP0001
|
||
|
|
* fn2(); // Does not emit a deprecation warning because it has the same code
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* If either the `--no-deprecation` or `--no-warnings` command-line flags are
|
||
|
|
* used, or if the `process.noDeprecation` property is set to `true`_prior_ to
|
||
|
|
* the first deprecation warning, the `util.deprecate()` method does nothing.
|
||
|
|
*
|
||
|
|
* If the `--trace-deprecation` or `--trace-warnings` command-line flags are set,
|
||
|
|
* or the `process.traceDeprecation` property is set to `true`, a warning and a
|
||
|
|
* stack trace are printed to `stderr` the first time the deprecated function is
|
||
|
|
* called.
|
||
|
|
*
|
||
|
|
* If the `--throw-deprecation` command-line flag is set, or the`process.throwDeprecation` property is set to `true`, then an exception will be
|
||
|
|
* thrown when the deprecated function is called.
|
||
|
|
*
|
||
|
|
* The `--throw-deprecation` command-line flag and `process.throwDeprecation`property take precedence over `--trace-deprecation` and`process.traceDeprecation`.
|
||
|
|
* @since v0.8.0
|
||
|
|
* @param fn The function that is being deprecated.
|
||
|
|
* @param msg A warning message to display when the deprecated function is invoked.
|
||
|
|
* @param code A deprecation code. See the `list of deprecated APIs` for a list of codes.
|
||
|
|
* @return The deprecated function wrapped to emit a warning.
|
||
|
|
*/
|
||
|
|
export function deprecate<T extends Function>(fn: T, msg: string, code?: string): T;
|
||
|
|
/**
|
||
|
|
* Returns `true` if there is deep strict equality between `val1` and `val2`.
|
||
|
|
* Otherwise, returns `false`.
|
||
|
|
*
|
||
|
|
* See `assert.deepStrictEqual()` for more information about deep strict
|
||
|
|
* equality.
|
||
|
|
* @since v9.0.0
|
||
|
|
*/
|
||
|
|
export function isDeepStrictEqual(val1: unknown, val2: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `str` with any ANSI escape codes removed.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* console.log(util.stripVTControlCharacters('\u001B[4mvalue\u001B[0m'));
|
||
|
|
* // Prints "value"
|
||
|
|
* ```
|
||
|
|
* @since v16.11.0
|
||
|
|
*/
|
||
|
|
export function stripVTControlCharacters(str: string): string;
|
||
|
|
/**
|
||
|
|
* Takes an `async` function (or a function that returns a `Promise`) and returns a
|
||
|
|
* function following the error-first callback style, i.e. taking
|
||
|
|
* an `(err, value) => ...` callback as the last argument. In the callback, the
|
||
|
|
* first argument will be the rejection reason (or `null` if the `Promise`resolved), and the second argument will be the resolved value.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* async function fn() {
|
||
|
|
* return 'hello world';
|
||
|
|
* }
|
||
|
|
* const callbackFunction = util.callbackify(fn);
|
||
|
|
*
|
||
|
|
* callbackFunction((err, ret) => {
|
||
|
|
* if (err) throw err;
|
||
|
|
* console.log(ret);
|
||
|
|
* });
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* Will print:
|
||
|
|
*
|
||
|
|
* ```text
|
||
|
|
* hello world
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* The callback is executed asynchronously, and will have a limited stack trace.
|
||
|
|
* If the callback throws, the process will emit an `'uncaughtException'` event, and if not handled will exit.
|
||
|
|
*
|
||
|
|
* Since `null` has a special meaning as the first argument to a callback, if a
|
||
|
|
* wrapped function rejects a `Promise` with a falsy value as a reason, the value
|
||
|
|
* is wrapped in an `Error` with the original value stored in a field named`reason`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* function fn() {
|
||
|
|
* return Promise.reject(null);
|
||
|
|
* }
|
||
|
|
* const callbackFunction = util.callbackify(fn);
|
||
|
|
*
|
||
|
|
* callbackFunction((err, ret) => {
|
||
|
|
* // When the Promise was rejected with `null` it is wrapped with an Error and
|
||
|
|
* // the original value is stored in `reason`.
|
||
|
|
* err && Object.hasOwn(err, 'reason') && err.reason === null; // true
|
||
|
|
* });
|
||
|
|
* ```
|
||
|
|
* @since v8.2.0
|
||
|
|
* @param fn An `async` function
|
||
|
|
* @return a callback style function
|
||
|
|
*/
|
||
|
|
export function callbackify(fn: () => Promise<void>): (callback: (err: NodeJS.ErrnoException) => void) => void;
|
||
|
|
export function callbackify<TResult>(
|
||
|
|
fn: () => Promise<TResult>,
|
||
|
|
): (callback: (err: NodeJS.ErrnoException, result: TResult) => void) => void;
|
||
|
|
export function callbackify<T1>(
|
||
|
|
fn: (arg1: T1) => Promise<void>,
|
||
|
|
): (arg1: T1, callback: (err: NodeJS.ErrnoException) => void) => void;
|
||
|
|
export function callbackify<T1, TResult>(
|
||
|
|
fn: (arg1: T1) => Promise<TResult>,
|
||
|
|
): (arg1: T1, callback: (err: NodeJS.ErrnoException, result: TResult) => void) => void;
|
||
|
|
export function callbackify<T1, T2>(
|
||
|
|
fn: (arg1: T1, arg2: T2) => Promise<void>,
|
||
|
|
): (arg1: T1, arg2: T2, callback: (err: NodeJS.ErrnoException) => void) => void;
|
||
|
|
export function callbackify<T1, T2, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2) => Promise<TResult>,
|
||
|
|
): (arg1: T1, arg2: T2, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
|
||
|
|
export function callbackify<T1, T2, T3>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3) => Promise<void>,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, callback: (err: NodeJS.ErrnoException) => void) => void;
|
||
|
|
export function callbackify<T1, T2, T3, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3) => Promise<TResult>,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
|
||
|
|
export function callbackify<T1, T2, T3, T4>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<void>,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: NodeJS.ErrnoException) => void) => void;
|
||
|
|
export function callbackify<T1, T2, T3, T4, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<TResult>,
|
||
|
|
): (
|
||
|
|
arg1: T1,
|
||
|
|
arg2: T2,
|
||
|
|
arg3: T3,
|
||
|
|
arg4: T4,
|
||
|
|
callback: (err: NodeJS.ErrnoException | null, result: TResult) => void,
|
||
|
|
) => void;
|
||
|
|
export function callbackify<T1, T2, T3, T4, T5>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<void>,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: NodeJS.ErrnoException) => void) => void;
|
||
|
|
export function callbackify<T1, T2, T3, T4, T5, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<TResult>,
|
||
|
|
): (
|
||
|
|
arg1: T1,
|
||
|
|
arg2: T2,
|
||
|
|
arg3: T3,
|
||
|
|
arg4: T4,
|
||
|
|
arg5: T5,
|
||
|
|
callback: (err: NodeJS.ErrnoException | null, result: TResult) => void,
|
||
|
|
) => void;
|
||
|
|
export function callbackify<T1, T2, T3, T4, T5, T6>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6) => Promise<void>,
|
||
|
|
): (
|
||
|
|
arg1: T1,
|
||
|
|
arg2: T2,
|
||
|
|
arg3: T3,
|
||
|
|
arg4: T4,
|
||
|
|
arg5: T5,
|
||
|
|
arg6: T6,
|
||
|
|
callback: (err: NodeJS.ErrnoException) => void,
|
||
|
|
) => void;
|
||
|
|
export function callbackify<T1, T2, T3, T4, T5, T6, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6) => Promise<TResult>,
|
||
|
|
): (
|
||
|
|
arg1: T1,
|
||
|
|
arg2: T2,
|
||
|
|
arg3: T3,
|
||
|
|
arg4: T4,
|
||
|
|
arg5: T5,
|
||
|
|
arg6: T6,
|
||
|
|
callback: (err: NodeJS.ErrnoException | null, result: TResult) => void,
|
||
|
|
) => void;
|
||
|
|
export interface CustomPromisifyLegacy<TCustom extends Function> extends Function {
|
||
|
|
__promisify__: TCustom;
|
||
|
|
}
|
||
|
|
export interface CustomPromisifySymbol<TCustom extends Function> extends Function {
|
||
|
|
[promisify.custom]: TCustom;
|
||
|
|
}
|
||
|
|
export type CustomPromisify<TCustom extends Function> =
|
||
|
|
| CustomPromisifySymbol<TCustom>
|
||
|
|
| CustomPromisifyLegacy<TCustom>;
|
||
|
|
/**
|
||
|
|
* Takes a function following the common error-first callback style, i.e. taking
|
||
|
|
* an `(err, value) => ...` callback as the last argument, and returns a version
|
||
|
|
* that returns promises.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* const fs = require('node:fs');
|
||
|
|
*
|
||
|
|
* const stat = util.promisify(fs.stat);
|
||
|
|
* stat('.').then((stats) => {
|
||
|
|
* // Do something with `stats`
|
||
|
|
* }).catch((error) => {
|
||
|
|
* // Handle the error.
|
||
|
|
* });
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* Or, equivalently using `async function`s:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
* const fs = require('node:fs');
|
||
|
|
*
|
||
|
|
* const stat = util.promisify(fs.stat);
|
||
|
|
*
|
||
|
|
* async function callStat() {
|
||
|
|
* const stats = await stat('.');
|
||
|
|
* console.log(`This directory is owned by ${stats.uid}`);
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* callStat();
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* If there is an `original[util.promisify.custom]` property present, `promisify`will return its value, see `Custom promisified functions`.
|
||
|
|
*
|
||
|
|
* `promisify()` assumes that `original` is a function taking a callback as its
|
||
|
|
* final argument in all cases. If `original` is not a function, `promisify()`will throw an error. If `original` is a function but its last argument is not
|
||
|
|
* an error-first callback, it will still be passed an error-first
|
||
|
|
* callback as its last argument.
|
||
|
|
*
|
||
|
|
* Using `promisify()` on class methods or other methods that use `this` may not
|
||
|
|
* work as expected unless handled specially:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const util = require('node:util');
|
||
|
|
*
|
||
|
|
* class Foo {
|
||
|
|
* constructor() {
|
||
|
|
* this.a = 42;
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* bar(callback) {
|
||
|
|
* callback(null, this.a);
|
||
|
|
* }
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* const foo = new Foo();
|
||
|
|
*
|
||
|
|
* const naiveBar = util.promisify(foo.bar);
|
||
|
|
* // TypeError: Cannot read property 'a' of undefined
|
||
|
|
* // naiveBar().then(a => console.log(a));
|
||
|
|
*
|
||
|
|
* naiveBar.call(foo).then((a) => console.log(a)); // '42'
|
||
|
|
*
|
||
|
|
* const bindBar = naiveBar.bind(foo);
|
||
|
|
* bindBar().then((a) => console.log(a)); // '42'
|
||
|
|
* ```
|
||
|
|
* @since v8.0.0
|
||
|
|
*/
|
||
|
|
export function promisify<TCustom extends Function>(fn: CustomPromisify<TCustom>): TCustom;
|
||
|
|
export function promisify<TResult>(
|
||
|
|
fn: (callback: (err: any, result: TResult) => void) => void,
|
||
|
|
): () => Promise<TResult>;
|
||
|
|
export function promisify(fn: (callback: (err?: any) => void) => void): () => Promise<void>;
|
||
|
|
export function promisify<T1, TResult>(
|
||
|
|
fn: (arg1: T1, callback: (err: any, result: TResult) => void) => void,
|
||
|
|
): (arg1: T1) => Promise<TResult>;
|
||
|
|
export function promisify<T1>(fn: (arg1: T1, callback: (err?: any) => void) => void): (arg1: T1) => Promise<void>;
|
||
|
|
export function promisify<T1, T2, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, callback: (err: any, result: TResult) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2) => Promise<TResult>;
|
||
|
|
export function promisify<T1, T2>(
|
||
|
|
fn: (arg1: T1, arg2: T2, callback: (err?: any) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2) => Promise<void>;
|
||
|
|
export function promisify<T1, T2, T3, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, callback: (err: any, result: TResult) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3) => Promise<TResult>;
|
||
|
|
export function promisify<T1, T2, T3>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, callback: (err?: any) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3) => Promise<void>;
|
||
|
|
export function promisify<T1, T2, T3, T4, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: any, result: TResult) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<TResult>;
|
||
|
|
export function promisify<T1, T2, T3, T4>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err?: any) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<void>;
|
||
|
|
export function promisify<T1, T2, T3, T4, T5, TResult>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: any, result: TResult) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<TResult>;
|
||
|
|
export function promisify<T1, T2, T3, T4, T5>(
|
||
|
|
fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err?: any) => void) => void,
|
||
|
|
): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<void>;
|
||
|
|
export function promisify(fn: Function): Function;
|
||
|
|
export namespace promisify {
|
||
|
|
/**
|
||
|
|
* That can be used to declare custom promisified variants of functions.
|
||
|
|
*/
|
||
|
|
const custom: unique symbol;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* An implementation of the [WHATWG Encoding Standard](https://encoding.spec.whatwg.org/) `TextDecoder` API.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const decoder = new TextDecoder();
|
||
|
|
* const u8arr = new Uint8Array([72, 101, 108, 108, 111]);
|
||
|
|
* console.log(decoder.decode(u8arr)); // Hello
|
||
|
|
* ```
|
||
|
|
* @since v8.3.0
|
||
|
|
*/
|
||
|
|
export class TextDecoder {
|
||
|
|
/**
|
||
|
|
* The encoding supported by the `TextDecoder` instance.
|
||
|
|
*/
|
||
|
|
readonly encoding: string;
|
||
|
|
/**
|
||
|
|
* The value will be `true` if decoding errors result in a `TypeError` being
|
||
|
|
* thrown.
|
||
|
|
*/
|
||
|
|
readonly fatal: boolean;
|
||
|
|
/**
|
||
|
|
* The value will be `true` if the decoding result will include the byte order
|
||
|
|
* mark.
|
||
|
|
*/
|
||
|
|
readonly ignoreBOM: boolean;
|
||
|
|
constructor(
|
||
|
|
encoding?: string,
|
||
|
|
options?: {
|
||
|
|
fatal?: boolean | undefined;
|
||
|
|
ignoreBOM?: boolean | undefined;
|
||
|
|
},
|
||
|
|
);
|
||
|
|
/**
|
||
|
|
* Decodes the `input` and returns a string. If `options.stream` is `true`, any
|
||
|
|
* incomplete byte sequences occurring at the end of the `input` are buffered
|
||
|
|
* internally and emitted after the next call to `textDecoder.decode()`.
|
||
|
|
*
|
||
|
|
* If `textDecoder.fatal` is `true`, decoding errors that occur will result in a`TypeError` being thrown.
|
||
|
|
* @param input An `ArrayBuffer`, `DataView`, or `TypedArray` instance containing the encoded data.
|
||
|
|
*/
|
||
|
|
decode(
|
||
|
|
input?: NodeJS.ArrayBufferView | ArrayBuffer | null,
|
||
|
|
options?: {
|
||
|
|
stream?: boolean | undefined;
|
||
|
|
},
|
||
|
|
): string;
|
||
|
|
}
|
||
|
|
export interface EncodeIntoResult {
|
||
|
|
/**
|
||
|
|
* The read Unicode code units of input.
|
||
|
|
*/
|
||
|
|
read: number;
|
||
|
|
/**
|
||
|
|
* The written UTF-8 bytes of output.
|
||
|
|
*/
|
||
|
|
written: number;
|
||
|
|
}
|
||
|
|
export { types };
|
||
|
|
|
||
|
|
//// TextEncoder/Decoder
|
||
|
|
/**
|
||
|
|
* An implementation of the [WHATWG Encoding Standard](https://encoding.spec.whatwg.org/) `TextEncoder` API. All
|
||
|
|
* instances of `TextEncoder` only support UTF-8 encoding.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const encoder = new TextEncoder();
|
||
|
|
* const uint8array = encoder.encode('this is some data');
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* The `TextEncoder` class is also available on the global object.
|
||
|
|
* @since v8.3.0
|
||
|
|
*/
|
||
|
|
export class TextEncoder {
|
||
|
|
/**
|
||
|
|
* The encoding supported by the `TextEncoder` instance. Always set to `'utf-8'`.
|
||
|
|
*/
|
||
|
|
readonly encoding: string;
|
||
|
|
/**
|
||
|
|
* UTF-8 encodes the `input` string and returns a `Uint8Array` containing the
|
||
|
|
* encoded bytes.
|
||
|
|
* @param [input='an empty string'] The text to encode.
|
||
|
|
*/
|
||
|
|
encode(input?: string): Uint8Array;
|
||
|
|
/**
|
||
|
|
* UTF-8 encodes the `src` string to the `dest` Uint8Array and returns an object
|
||
|
|
* containing the read Unicode code units and written UTF-8 bytes.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const encoder = new TextEncoder();
|
||
|
|
* const src = 'this is some data';
|
||
|
|
* const dest = new Uint8Array(10);
|
||
|
|
* const { read, written } = encoder.encodeInto(src, dest);
|
||
|
|
* ```
|
||
|
|
* @param src The text to encode.
|
||
|
|
* @param dest The array to hold the encode result.
|
||
|
|
*/
|
||
|
|
encodeInto(src: string, dest: Uint8Array): EncodeIntoResult;
|
||
|
|
}
|
||
|
|
import { TextDecoder as _TextDecoder, TextEncoder as _TextEncoder } from "util";
|
||
|
|
global {
|
||
|
|
/**
|
||
|
|
* `TextDecoder` class is a global reference for `require('util').TextDecoder`
|
||
|
|
* https://nodejs.org/api/globals.html#textdecoder
|
||
|
|
* @since v11.0.0
|
||
|
|
*/
|
||
|
|
var TextDecoder: typeof globalThis extends {
|
||
|
|
onmessage: any;
|
||
|
|
TextDecoder: infer TextDecoder;
|
||
|
|
} ? TextDecoder
|
||
|
|
: typeof _TextDecoder;
|
||
|
|
/**
|
||
|
|
* `TextEncoder` class is a global reference for `require('util').TextEncoder`
|
||
|
|
* https://nodejs.org/api/globals.html#textencoder
|
||
|
|
* @since v11.0.0
|
||
|
|
*/
|
||
|
|
var TextEncoder: typeof globalThis extends {
|
||
|
|
onmessage: any;
|
||
|
|
TextEncoder: infer TextEncoder;
|
||
|
|
} ? TextEncoder
|
||
|
|
: typeof _TextEncoder;
|
||
|
|
}
|
||
|
|
|
||
|
|
//// parseArgs
|
||
|
|
/**
|
||
|
|
* Provides a higher level API for command-line argument parsing than interacting
|
||
|
|
* with `process.argv` directly. Takes a specification for the expected arguments
|
||
|
|
* and returns a structured object with the parsed options and positionals.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import { parseArgs } from 'node:util';
|
||
|
|
* const args = ['-f', '--bar', 'b'];
|
||
|
|
* const options = {
|
||
|
|
* foo: {
|
||
|
|
* type: 'boolean',
|
||
|
|
* short: 'f',
|
||
|
|
* },
|
||
|
|
* bar: {
|
||
|
|
* type: 'string',
|
||
|
|
* },
|
||
|
|
* };
|
||
|
|
* const {
|
||
|
|
* values,
|
||
|
|
* positionals,
|
||
|
|
* } = parseArgs({ args, options });
|
||
|
|
* console.log(values, positionals);
|
||
|
|
* // Prints: [Object: null prototype] { foo: true, bar: 'b' } []
|
||
|
|
* ```
|
||
|
|
* @since v18.3.0, v16.17.0
|
||
|
|
* @param config Used to provide arguments for parsing and to configure the parser. `config` supports the following properties:
|
||
|
|
* @return The parsed command line arguments:
|
||
|
|
*/
|
||
|
|
export function parseArgs<T extends ParseArgsConfig>(config?: T): ParsedResults<T>;
|
||
|
|
interface ParseArgsOptionConfig {
|
||
|
|
/**
|
||
|
|
* Type of argument.
|
||
|
|
*/
|
||
|
|
type: "string" | "boolean";
|
||
|
|
/**
|
||
|
|
* Whether this option can be provided multiple times.
|
||
|
|
* If `true`, all values will be collected in an array.
|
||
|
|
* If `false`, values for the option are last-wins.
|
||
|
|
* @default false.
|
||
|
|
*/
|
||
|
|
multiple?: boolean | undefined;
|
||
|
|
/**
|
||
|
|
* A single character alias for the option.
|
||
|
|
*/
|
||
|
|
short?: string | undefined;
|
||
|
|
/**
|
||
|
|
* The default option value when it is not set by args.
|
||
|
|
* It must be of the same type as the the `type` property.
|
||
|
|
* When `multiple` is `true`, it must be an array.
|
||
|
|
* @since v18.11.0
|
||
|
|
*/
|
||
|
|
default?: string | boolean | string[] | boolean[] | undefined;
|
||
|
|
}
|
||
|
|
interface ParseArgsOptionsConfig {
|
||
|
|
[longOption: string]: ParseArgsOptionConfig;
|
||
|
|
}
|
||
|
|
export interface ParseArgsConfig {
|
||
|
|
/**
|
||
|
|
* Array of argument strings.
|
||
|
|
*/
|
||
|
|
args?: string[] | undefined;
|
||
|
|
/**
|
||
|
|
* Used to describe arguments known to the parser.
|
||
|
|
*/
|
||
|
|
options?: ParseArgsOptionsConfig | undefined;
|
||
|
|
/**
|
||
|
|
* Should an error be thrown when unknown arguments are encountered,
|
||
|
|
* or when arguments are passed that do not match the `type` configured in `options`.
|
||
|
|
* @default true
|
||
|
|
*/
|
||
|
|
strict?: boolean | undefined;
|
||
|
|
/**
|
||
|
|
* Whether this command accepts positional arguments.
|
||
|
|
*/
|
||
|
|
allowPositionals?: boolean | undefined;
|
||
|
|
/**
|
||
|
|
* Return the parsed tokens. This is useful for extending the built-in behavior,
|
||
|
|
* from adding additional checks through to reprocessing the tokens in different ways.
|
||
|
|
* @default false
|
||
|
|
*/
|
||
|
|
tokens?: boolean | undefined;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
IfDefaultsTrue and IfDefaultsFalse are helpers to handle default values for missing boolean properties.
|
||
|
|
TypeScript does not have exact types for objects: https://github.com/microsoft/TypeScript/issues/12936
|
||
|
|
This means it is impossible to distinguish between "field X is definitely not present" and "field X may or may not be present".
|
||
|
|
But we expect users to generally provide their config inline or `as const`, which means TS will always know whether a given field is present.
|
||
|
|
So this helper treats "not definitely present" (i.e., not `extends boolean`) as being "definitely not present", i.e. it should have its default value.
|
||
|
|
This is technically incorrect but is a much nicer UX for the common case.
|
||
|
|
The IfDefaultsTrue version is for things which default to true; the IfDefaultsFalse version is for things which default to false.
|
||
|
|
*/
|
||
|
|
type IfDefaultsTrue<T, IfTrue, IfFalse> = T extends true ? IfTrue
|
||
|
|
: T extends false ? IfFalse
|
||
|
|
: IfTrue;
|
||
|
|
|
||
|
|
// we put the `extends false` condition first here because `undefined` compares like `any` when `strictNullChecks: false`
|
||
|
|
type IfDefaultsFalse<T, IfTrue, IfFalse> = T extends false ? IfFalse
|
||
|
|
: T extends true ? IfTrue
|
||
|
|
: IfFalse;
|
||
|
|
|
||
|
|
type ExtractOptionValue<T extends ParseArgsConfig, O extends ParseArgsOptionConfig> = IfDefaultsTrue<
|
||
|
|
T["strict"],
|
||
|
|
O["type"] extends "string" ? string : O["type"] extends "boolean" ? boolean : string | boolean,
|
||
|
|
string | boolean
|
||
|
|
>;
|
||
|
|
|
||
|
|
type ParsedValues<T extends ParseArgsConfig> =
|
||
|
|
& IfDefaultsTrue<T["strict"], unknown, { [longOption: string]: undefined | string | boolean }>
|
||
|
|
& (T["options"] extends ParseArgsOptionsConfig ? {
|
||
|
|
-readonly [LongOption in keyof T["options"]]: IfDefaultsFalse<
|
||
|
|
T["options"][LongOption]["multiple"],
|
||
|
|
undefined | Array<ExtractOptionValue<T, T["options"][LongOption]>>,
|
||
|
|
undefined | ExtractOptionValue<T, T["options"][LongOption]>
|
||
|
|
>;
|
||
|
|
}
|
||
|
|
: {});
|
||
|
|
|
||
|
|
type ParsedPositionals<T extends ParseArgsConfig> = IfDefaultsTrue<
|
||
|
|
T["strict"],
|
||
|
|
IfDefaultsFalse<T["allowPositionals"], string[], []>,
|
||
|
|
IfDefaultsTrue<T["allowPositionals"], string[], []>
|
||
|
|
>;
|
||
|
|
|
||
|
|
type PreciseTokenForOptions<
|
||
|
|
K extends string,
|
||
|
|
O extends ParseArgsOptionConfig,
|
||
|
|
> = O["type"] extends "string" ? {
|
||
|
|
kind: "option";
|
||
|
|
index: number;
|
||
|
|
name: K;
|
||
|
|
rawName: string;
|
||
|
|
value: string;
|
||
|
|
inlineValue: boolean;
|
||
|
|
}
|
||
|
|
: O["type"] extends "boolean" ? {
|
||
|
|
kind: "option";
|
||
|
|
index: number;
|
||
|
|
name: K;
|
||
|
|
rawName: string;
|
||
|
|
value: undefined;
|
||
|
|
inlineValue: undefined;
|
||
|
|
}
|
||
|
|
: OptionToken & { name: K };
|
||
|
|
|
||
|
|
type TokenForOptions<
|
||
|
|
T extends ParseArgsConfig,
|
||
|
|
K extends keyof T["options"] = keyof T["options"],
|
||
|
|
> = K extends unknown
|
||
|
|
? T["options"] extends ParseArgsOptionsConfig ? PreciseTokenForOptions<K & string, T["options"][K]>
|
||
|
|
: OptionToken
|
||
|
|
: never;
|
||
|
|
|
||
|
|
type ParsedOptionToken<T extends ParseArgsConfig> = IfDefaultsTrue<T["strict"], TokenForOptions<T>, OptionToken>;
|
||
|
|
|
||
|
|
type ParsedPositionalToken<T extends ParseArgsConfig> = IfDefaultsTrue<
|
||
|
|
T["strict"],
|
||
|
|
IfDefaultsFalse<T["allowPositionals"], { kind: "positional"; index: number; value: string }, never>,
|
||
|
|
IfDefaultsTrue<T["allowPositionals"], { kind: "positional"; index: number; value: string }, never>
|
||
|
|
>;
|
||
|
|
|
||
|
|
type ParsedTokens<T extends ParseArgsConfig> = Array<
|
||
|
|
ParsedOptionToken<T> | ParsedPositionalToken<T> | { kind: "option-terminator"; index: number }
|
||
|
|
>;
|
||
|
|
|
||
|
|
type PreciseParsedResults<T extends ParseArgsConfig> = IfDefaultsFalse<
|
||
|
|
T["tokens"],
|
||
|
|
{
|
||
|
|
values: ParsedValues<T>;
|
||
|
|
positionals: ParsedPositionals<T>;
|
||
|
|
tokens: ParsedTokens<T>;
|
||
|
|
},
|
||
|
|
{
|
||
|
|
values: ParsedValues<T>;
|
||
|
|
positionals: ParsedPositionals<T>;
|
||
|
|
}
|
||
|
|
>;
|
||
|
|
|
||
|
|
type OptionToken =
|
||
|
|
| { kind: "option"; index: number; name: string; rawName: string; value: string; inlineValue: boolean }
|
||
|
|
| {
|
||
|
|
kind: "option";
|
||
|
|
index: number;
|
||
|
|
name: string;
|
||
|
|
rawName: string;
|
||
|
|
value: undefined;
|
||
|
|
inlineValue: undefined;
|
||
|
|
};
|
||
|
|
|
||
|
|
type Token =
|
||
|
|
| OptionToken
|
||
|
|
| { kind: "positional"; index: number; value: string }
|
||
|
|
| { kind: "option-terminator"; index: number };
|
||
|
|
|
||
|
|
// If ParseArgsConfig extends T, then the user passed config constructed elsewhere.
|
||
|
|
// So we can't rely on the `"not definitely present" implies "definitely not present"` assumption mentioned above.
|
||
|
|
type ParsedResults<T extends ParseArgsConfig> = ParseArgsConfig extends T ? {
|
||
|
|
values: {
|
||
|
|
[longOption: string]: undefined | string | boolean | Array<string | boolean>;
|
||
|
|
};
|
||
|
|
positionals: string[];
|
||
|
|
tokens?: Token[];
|
||
|
|
}
|
||
|
|
: PreciseParsedResults<T>;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* An implementation of [the MIMEType class](https://bmeck.github.io/node-proposal-mime-api/).
|
||
|
|
*
|
||
|
|
* In accordance with browser conventions, all properties of `MIMEType` objects
|
||
|
|
* are implemented as getters and setters on the class prototype, rather than as
|
||
|
|
* data properties on the object itself.
|
||
|
|
*
|
||
|
|
* A MIME string is a structured string containing multiple meaningful
|
||
|
|
* components. When parsed, a `MIMEType` object is returned containing
|
||
|
|
* properties for each of these components.
|
||
|
|
* @since v19.1.0, v18.13.0
|
||
|
|
* @experimental
|
||
|
|
*/
|
||
|
|
export class MIMEType {
|
||
|
|
/**
|
||
|
|
* Creates a new MIMEType object by parsing the input.
|
||
|
|
*
|
||
|
|
* A `TypeError` will be thrown if the `input` is not a valid MIME.
|
||
|
|
* Note that an effort will be made to coerce the given values into strings.
|
||
|
|
* @param input The input MIME to parse.
|
||
|
|
*/
|
||
|
|
constructor(input: string | { toString: () => string });
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets and sets the type portion of the MIME.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import { MIMEType } from 'node:util';
|
||
|
|
*
|
||
|
|
* const myMIME = new MIMEType('text/javascript');
|
||
|
|
* console.log(myMIME.type);
|
||
|
|
* // Prints: text
|
||
|
|
* myMIME.type = 'application';
|
||
|
|
* console.log(myMIME.type);
|
||
|
|
* // Prints: application
|
||
|
|
* console.log(String(myMIME));
|
||
|
|
* // Prints: application/javascript
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
type: string;
|
||
|
|
/**
|
||
|
|
* Gets and sets the subtype portion of the MIME.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import { MIMEType } from 'node:util';
|
||
|
|
*
|
||
|
|
* const myMIME = new MIMEType('text/ecmascript');
|
||
|
|
* console.log(myMIME.subtype);
|
||
|
|
* // Prints: ecmascript
|
||
|
|
* myMIME.subtype = 'javascript';
|
||
|
|
* console.log(myMIME.subtype);
|
||
|
|
* // Prints: javascript
|
||
|
|
* console.log(String(myMIME));
|
||
|
|
* // Prints: text/javascript
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
subtype: string;
|
||
|
|
/**
|
||
|
|
* Gets the essence of the MIME. This property is read only.
|
||
|
|
* Use `mime.type` or `mime.subtype` to alter the MIME.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import { MIMEType } from 'node:util';
|
||
|
|
*
|
||
|
|
* const myMIME = new MIMEType('text/javascript;key=value');
|
||
|
|
* console.log(myMIME.essence);
|
||
|
|
* // Prints: text/javascript
|
||
|
|
* myMIME.type = 'application';
|
||
|
|
* console.log(myMIME.essence);
|
||
|
|
* // Prints: application/javascript
|
||
|
|
* console.log(String(myMIME));
|
||
|
|
* // Prints: application/javascript;key=value
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
readonly essence: string;
|
||
|
|
/**
|
||
|
|
* Gets the `MIMEParams` object representing the
|
||
|
|
* parameters of the MIME. This property is read-only. See `MIMEParams` documentation for details.
|
||
|
|
*/
|
||
|
|
readonly params: MIMEParams;
|
||
|
|
/**
|
||
|
|
* The `toString()` method on the `MIMEType` object returns the serialized MIME.
|
||
|
|
*
|
||
|
|
* Because of the need for standard compliance, this method does not allow users
|
||
|
|
* to customize the serialization process of the MIME.
|
||
|
|
*/
|
||
|
|
toString(): string;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* The `MIMEParams` API provides read and write access to the parameters of a`MIMEType`.
|
||
|
|
* @since v19.1.0, v18.13.0
|
||
|
|
*/
|
||
|
|
export class MIMEParams {
|
||
|
|
/**
|
||
|
|
* Remove all name-value pairs whose name is `name`.
|
||
|
|
*/
|
||
|
|
delete(name: string): void;
|
||
|
|
/**
|
||
|
|
* Returns an iterator over each of the name-value pairs in the parameters.
|
||
|
|
* Each item of the iterator is a JavaScript `Array`. The first item of the array
|
||
|
|
* is the `name`, the second item of the array is the `value`.
|
||
|
|
*/
|
||
|
|
entries(): IterableIterator<[name: string, value: string]>;
|
||
|
|
/**
|
||
|
|
* Returns the value of the first name-value pair whose name is `name`. If there
|
||
|
|
* are no such pairs, `null` is returned.
|
||
|
|
* @return or `null` if there is no name-value pair with the given `name`.
|
||
|
|
*/
|
||
|
|
get(name: string): string | null;
|
||
|
|
/**
|
||
|
|
* Returns `true` if there is at least one name-value pair whose name is `name`.
|
||
|
|
*/
|
||
|
|
has(name: string): boolean;
|
||
|
|
/**
|
||
|
|
* Returns an iterator over the names of each name-value pair.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import { MIMEType } from 'node:util';
|
||
|
|
*
|
||
|
|
* const { params } = new MIMEType('text/plain;foo=0;bar=1');
|
||
|
|
* for (const name of params.keys()) {
|
||
|
|
* console.log(name);
|
||
|
|
* }
|
||
|
|
* // Prints:
|
||
|
|
* // foo
|
||
|
|
* // bar
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
keys(): IterableIterator<string>;
|
||
|
|
/**
|
||
|
|
* Sets the value in the `MIMEParams` object associated with `name` to`value`. If there are any pre-existing name-value pairs whose names are `name`,
|
||
|
|
* set the first such pair's value to `value`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import { MIMEType } from 'node:util';
|
||
|
|
*
|
||
|
|
* const { params } = new MIMEType('text/plain;foo=0;bar=1');
|
||
|
|
* params.set('foo', 'def');
|
||
|
|
* params.set('baz', 'xyz');
|
||
|
|
* console.log(params.toString());
|
||
|
|
* // Prints: foo=def;bar=1;baz=xyz
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
set(name: string, value: string): void;
|
||
|
|
/**
|
||
|
|
* Returns an iterator over the values of each name-value pair.
|
||
|
|
*/
|
||
|
|
values(): IterableIterator<string>;
|
||
|
|
/**
|
||
|
|
* Returns an iterator over each of the name-value pairs in the parameters.
|
||
|
|
*/
|
||
|
|
[Symbol.iterator]: typeof MIMEParams.prototype.entries;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
declare module "util/types" {
|
||
|
|
import { KeyObject, webcrypto } from "node:crypto";
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) or
|
||
|
|
* [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instance.
|
||
|
|
*
|
||
|
|
* See also `util.types.isArrayBuffer()` and `util.types.isSharedArrayBuffer()`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isAnyArrayBuffer(new ArrayBuffer()); // Returns true
|
||
|
|
* util.types.isAnyArrayBuffer(new SharedArrayBuffer()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isAnyArrayBuffer(object: unknown): object is ArrayBufferLike;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is an `arguments` object.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* function foo() {
|
||
|
|
* util.types.isArgumentsObject(arguments); // Returns true
|
||
|
|
* }
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isArgumentsObject(object: unknown): object is IArguments;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) instance.
|
||
|
|
* This does _not_ include [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instances. Usually, it is
|
||
|
|
* desirable to test for both; See `util.types.isAnyArrayBuffer()` for that.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isArrayBuffer(new ArrayBuffer()); // Returns true
|
||
|
|
* util.types.isArrayBuffer(new SharedArrayBuffer()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isArrayBuffer(object: unknown): object is ArrayBuffer;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is an instance of one of the [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) views, such as typed
|
||
|
|
* array objects or [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView). Equivalent to
|
||
|
|
* [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isArrayBufferView(new Int8Array()); // true
|
||
|
|
* util.types.isArrayBufferView(Buffer.from('hello world')); // true
|
||
|
|
* util.types.isArrayBufferView(new DataView(new ArrayBuffer(16))); // true
|
||
|
|
* util.types.isArrayBufferView(new ArrayBuffer()); // false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isArrayBufferView(object: unknown): object is NodeJS.ArrayBufferView;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is an [async function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function).
|
||
|
|
* This only reports back what the JavaScript engine is seeing;
|
||
|
|
* in particular, the return value may not match the original source code if
|
||
|
|
* a transpilation tool was used.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isAsyncFunction(function foo() {}); // Returns false
|
||
|
|
* util.types.isAsyncFunction(async function foo() {}); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isAsyncFunction(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a `BigInt64Array` instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isBigInt64Array(new BigInt64Array()); // Returns true
|
||
|
|
* util.types.isBigInt64Array(new BigUint64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isBigInt64Array(value: unknown): value is BigInt64Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a `BigUint64Array` instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isBigUint64Array(new BigInt64Array()); // Returns false
|
||
|
|
* util.types.isBigUint64Array(new BigUint64Array()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isBigUint64Array(value: unknown): value is BigUint64Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a boolean object, e.g. created
|
||
|
|
* by `new Boolean()`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isBooleanObject(false); // Returns false
|
||
|
|
* util.types.isBooleanObject(true); // Returns false
|
||
|
|
* util.types.isBooleanObject(new Boolean(false)); // Returns true
|
||
|
|
* util.types.isBooleanObject(new Boolean(true)); // Returns true
|
||
|
|
* util.types.isBooleanObject(Boolean(false)); // Returns false
|
||
|
|
* util.types.isBooleanObject(Boolean(true)); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isBooleanObject(object: unknown): object is Boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is any boxed primitive object, e.g. created
|
||
|
|
* by `new Boolean()`, `new String()` or `Object(Symbol())`.
|
||
|
|
*
|
||
|
|
* For example:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isBoxedPrimitive(false); // Returns false
|
||
|
|
* util.types.isBoxedPrimitive(new Boolean(false)); // Returns true
|
||
|
|
* util.types.isBoxedPrimitive(Symbol('foo')); // Returns false
|
||
|
|
* util.types.isBoxedPrimitive(Object(Symbol('foo'))); // Returns true
|
||
|
|
* util.types.isBoxedPrimitive(Object(BigInt(5))); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.11.0
|
||
|
|
*/
|
||
|
|
function isBoxedPrimitive(object: unknown): object is String | Number | BigInt | Boolean | Symbol;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const ab = new ArrayBuffer(20);
|
||
|
|
* util.types.isDataView(new DataView(ab)); // Returns true
|
||
|
|
* util.types.isDataView(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* See also [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isDataView(object: unknown): object is DataView;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isDate(new Date()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isDate(object: unknown): object is Date;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a native `External` value.
|
||
|
|
*
|
||
|
|
* A native `External` value is a special type of object that contains a
|
||
|
|
* raw C++ pointer (`void*`) for access from native code, and has no other
|
||
|
|
* properties. Such objects are created either by Node.js internals or native
|
||
|
|
* addons. In JavaScript, they are [frozen](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze) objects with a`null` prototype.
|
||
|
|
*
|
||
|
|
* ```c
|
||
|
|
* #include <js_native_api.h>
|
||
|
|
* #include <stdlib.h>
|
||
|
|
* napi_value result;
|
||
|
|
* static napi_value MyNapi(napi_env env, napi_callback_info info) {
|
||
|
|
* int* raw = (int*) malloc(1024);
|
||
|
|
* napi_status status = napi_create_external(env, (void*) raw, NULL, NULL, &result);
|
||
|
|
* if (status != napi_ok) {
|
||
|
|
* napi_throw_error(env, NULL, "napi_create_external failed");
|
||
|
|
* return NULL;
|
||
|
|
* }
|
||
|
|
* return result;
|
||
|
|
* }
|
||
|
|
* ...
|
||
|
|
* DECLARE_NAPI_PROPERTY("myNapi", MyNapi)
|
||
|
|
* ...
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const native = require('napi_addon.node');
|
||
|
|
* const data = native.myNapi();
|
||
|
|
* util.types.isExternal(data); // returns true
|
||
|
|
* util.types.isExternal(0); // returns false
|
||
|
|
* util.types.isExternal(new String('foo')); // returns false
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* For further information on `napi_create_external`, refer to `napi_create_external()`.
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isExternal(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Float32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isFloat32Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isFloat32Array(new Float32Array()); // Returns true
|
||
|
|
* util.types.isFloat32Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isFloat32Array(object: unknown): object is Float32Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Float64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isFloat64Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isFloat64Array(new Uint8Array()); // Returns false
|
||
|
|
* util.types.isFloat64Array(new Float64Array()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isFloat64Array(object: unknown): object is Float64Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a generator function.
|
||
|
|
* This only reports back what the JavaScript engine is seeing;
|
||
|
|
* in particular, the return value may not match the original source code if
|
||
|
|
* a transpilation tool was used.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isGeneratorFunction(function foo() {}); // Returns false
|
||
|
|
* util.types.isGeneratorFunction(function* foo() {}); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isGeneratorFunction(object: unknown): object is GeneratorFunction;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a generator object as returned from a
|
||
|
|
* built-in generator function.
|
||
|
|
* This only reports back what the JavaScript engine is seeing;
|
||
|
|
* in particular, the return value may not match the original source code if
|
||
|
|
* a transpilation tool was used.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* function* foo() {}
|
||
|
|
* const generator = foo();
|
||
|
|
* util.types.isGeneratorObject(generator); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isGeneratorObject(object: unknown): object is Generator;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Int8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isInt8Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isInt8Array(new Int8Array()); // Returns true
|
||
|
|
* util.types.isInt8Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isInt8Array(object: unknown): object is Int8Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Int16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int16Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isInt16Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isInt16Array(new Int16Array()); // Returns true
|
||
|
|
* util.types.isInt16Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isInt16Array(object: unknown): object is Int16Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Int32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int32Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isInt32Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isInt32Array(new Int32Array()); // Returns true
|
||
|
|
* util.types.isInt32Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isInt32Array(object: unknown): object is Int32Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isMap(new Map()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isMap<T>(
|
||
|
|
object: T | {},
|
||
|
|
): object is T extends ReadonlyMap<any, any> ? (unknown extends T ? never : ReadonlyMap<any, any>)
|
||
|
|
: Map<unknown, unknown>;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is an iterator returned for a built-in [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const map = new Map();
|
||
|
|
* util.types.isMapIterator(map.keys()); // Returns true
|
||
|
|
* util.types.isMapIterator(map.values()); // Returns true
|
||
|
|
* util.types.isMapIterator(map.entries()); // Returns true
|
||
|
|
* util.types.isMapIterator(map[Symbol.iterator]()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isMapIterator(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is an instance of a [Module Namespace Object](https://tc39.github.io/ecma262/#sec-module-namespace-exotic-objects).
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* import * as ns from './a.js';
|
||
|
|
*
|
||
|
|
* util.types.isModuleNamespaceObject(ns); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isModuleNamespaceObject(value: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value was returned by the constructor of a [built-in `Error` type](https://tc39.es/ecma262/#sec-error-objects).
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* console.log(util.types.isNativeError(new Error())); // true
|
||
|
|
* console.log(util.types.isNativeError(new TypeError())); // true
|
||
|
|
* console.log(util.types.isNativeError(new RangeError())); // true
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* Subclasses of the native error types are also native errors:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* class MyError extends Error {}
|
||
|
|
* console.log(util.types.isNativeError(new MyError())); // true
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* A value being `instanceof` a native error class is not equivalent to `isNativeError()`returning `true` for that value. `isNativeError()` returns `true` for errors
|
||
|
|
* which come from a different [realm](https://tc39.es/ecma262/#realm) while `instanceof Error` returns `false`for these errors:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const vm = require('node:vm');
|
||
|
|
* const context = vm.createContext({});
|
||
|
|
* const myError = vm.runInContext('new Error()', context);
|
||
|
|
* console.log(util.types.isNativeError(myError)); // true
|
||
|
|
* console.log(myError instanceof Error); // false
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* Conversely, `isNativeError()` returns `false` for all objects which were not
|
||
|
|
* returned by the constructor of a native error. That includes values
|
||
|
|
* which are `instanceof` native errors:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const myError = { __proto__: Error.prototype };
|
||
|
|
* console.log(util.types.isNativeError(myError)); // false
|
||
|
|
* console.log(myError instanceof Error); // true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isNativeError(object: unknown): object is Error;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a number object, e.g. created
|
||
|
|
* by `new Number()`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isNumberObject(0); // Returns false
|
||
|
|
* util.types.isNumberObject(new Number(0)); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isNumberObject(object: unknown): object is Number;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Promise`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise).
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isPromise(Promise.resolve(42)); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isPromise(object: unknown): object is Promise<unknown>;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a [`Proxy`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const target = {};
|
||
|
|
* const proxy = new Proxy(target, {});
|
||
|
|
* util.types.isProxy(target); // Returns false
|
||
|
|
* util.types.isProxy(proxy); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isProxy(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a regular expression object.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isRegExp(/abc/); // Returns true
|
||
|
|
* util.types.isRegExp(new RegExp('abc')); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isRegExp(object: unknown): object is RegExp;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isSet(new Set()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isSet<T>(
|
||
|
|
object: T | {},
|
||
|
|
): object is T extends ReadonlySet<any> ? (unknown extends T ? never : ReadonlySet<any>) : Set<unknown>;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is an iterator returned for a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const set = new Set();
|
||
|
|
* util.types.isSetIterator(set.keys()); // Returns true
|
||
|
|
* util.types.isSetIterator(set.values()); // Returns true
|
||
|
|
* util.types.isSetIterator(set.entries()); // Returns true
|
||
|
|
* util.types.isSetIterator(set[Symbol.iterator]()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isSetIterator(object: unknown): boolean;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instance.
|
||
|
|
* This does _not_ include [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) instances. Usually, it is
|
||
|
|
* desirable to test for both; See `util.types.isAnyArrayBuffer()` for that.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isSharedArrayBuffer(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isSharedArrayBuffer(new SharedArrayBuffer()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isSharedArrayBuffer(object: unknown): object is SharedArrayBuffer;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a string object, e.g. created
|
||
|
|
* by `new String()`.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isStringObject('foo'); // Returns false
|
||
|
|
* util.types.isStringObject(new String('foo')); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isStringObject(object: unknown): object is String;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a symbol object, created
|
||
|
|
* by calling `Object()` on a `Symbol` primitive.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const symbol = Symbol('foo');
|
||
|
|
* util.types.isSymbolObject(symbol); // Returns false
|
||
|
|
* util.types.isSymbolObject(Object(symbol)); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isSymbolObject(object: unknown): object is Symbol;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`TypedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isTypedArray(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isTypedArray(new Uint8Array()); // Returns true
|
||
|
|
* util.types.isTypedArray(new Float64Array()); // Returns true
|
||
|
|
* ```
|
||
|
|
*
|
||
|
|
* See also [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isTypedArray(object: unknown): object is NodeJS.TypedArray;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isUint8Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isUint8Array(new Uint8Array()); // Returns true
|
||
|
|
* util.types.isUint8Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isUint8Array(object: unknown): object is Uint8Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Uint8ClampedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isUint8ClampedArray(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isUint8ClampedArray(new Uint8ClampedArray()); // Returns true
|
||
|
|
* util.types.isUint8ClampedArray(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isUint8ClampedArray(object: unknown): object is Uint8ClampedArray;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Uint16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint16Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isUint16Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isUint16Array(new Uint16Array()); // Returns true
|
||
|
|
* util.types.isUint16Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isUint16Array(object: unknown): object is Uint16Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`Uint32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint32Array) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isUint32Array(new ArrayBuffer()); // Returns false
|
||
|
|
* util.types.isUint32Array(new Uint32Array()); // Returns true
|
||
|
|
* util.types.isUint32Array(new Float64Array()); // Returns false
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isUint32Array(object: unknown): object is Uint32Array;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`WeakMap`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isWeakMap(new WeakMap()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isWeakMap(object: unknown): object is WeakMap<object, unknown>;
|
||
|
|
/**
|
||
|
|
* Returns `true` if the value is a built-in [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) instance.
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* util.types.isWeakSet(new WeakSet()); // Returns true
|
||
|
|
* ```
|
||
|
|
* @since v10.0.0
|
||
|
|
*/
|
||
|
|
function isWeakSet(object: unknown): object is WeakSet<object>;
|
||
|
|
/**
|
||
|
|
* Returns `true` if `value` is a `KeyObject`, `false` otherwise.
|
||
|
|
* @since v16.2.0
|
||
|
|
*/
|
||
|
|
function isKeyObject(object: unknown): object is KeyObject;
|
||
|
|
/**
|
||
|
|
* Returns `true` if `value` is a `CryptoKey`, `false` otherwise.
|
||
|
|
* @since v16.2.0
|
||
|
|
*/
|
||
|
|
function isCryptoKey(object: unknown): object is webcrypto.CryptoKey;
|
||
|
|
}
|
||
|
|
declare module "node:util" {
|
||
|
|
export * from "util";
|
||
|
|
}
|
||
|
|
declare module "node:util/types" {
|
||
|
|
export * from "util/types";
|
||
|
|
}
|