956 lines
28 KiB
TypeScript
956 lines
28 KiB
TypeScript
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import {type Buffer} from 'node:buffer';
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import {type ChildProcess} from 'node:child_process';
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import {type Stream, type Readable as ReadableStream, type Writable as WritableStream} from 'node:stream';
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export type StdioOption =
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| 'pipe'
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| 'overlapped'
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| 'ipc'
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| 'ignore'
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| 'inherit'
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| Stream
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| number
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| undefined;
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type EncodingOption =
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| 'utf8'
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// eslint-disable-next-line unicorn/text-encoding-identifier-case
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| 'utf-8'
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| 'utf16le'
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| 'utf-16le'
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| 'ucs2'
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| 'ucs-2'
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| 'latin1'
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| 'binary'
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| 'ascii'
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| 'hex'
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| 'base64'
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| 'base64url'
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| 'buffer'
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| null
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| undefined;
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type DefaultEncodingOption = 'utf8';
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type BufferEncodingOption = 'buffer' | null;
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export type CommonOptions<EncodingType extends EncodingOption = DefaultEncodingOption> = {
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/**
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Kill the spawned process when the parent process exits unless either:
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- the spawned process is [`detached`](https://nodejs.org/api/child_process.html#child_process_options_detached)
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- the parent process is terminated abruptly, for example, with `SIGKILL` as opposed to `SIGTERM` or a normal exit
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@default true
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*/
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readonly cleanup?: boolean;
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/**
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Prefer locally installed binaries when looking for a binary to execute.
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If you `$ npm install foo`, you can then `execa('foo')`.
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@default `true` with `$`, `false` otherwise
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*/
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readonly preferLocal?: boolean;
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/**
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Preferred path to find locally installed binaries in (use with `preferLocal`).
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@default process.cwd()
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*/
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readonly localDir?: string | URL;
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/**
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Path to the Node.js executable to use in child processes.
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This can be either an absolute path or a path relative to the `cwd` option.
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Requires `preferLocal` to be `true`.
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For example, this can be used together with [`get-node`](https://github.com/ehmicky/get-node) to run a specific Node.js version in a child process.
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@default process.execPath
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*/
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readonly execPath?: string;
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/**
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Buffer the output from the spawned process. When set to `false`, you must read the output of `stdout` and `stderr` (or `all` if the `all` option is `true`). Otherwise the returned promise will not be resolved/rejected.
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If the spawned process fails, `error.stdout`, `error.stderr`, and `error.all` will contain the buffered data.
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@default true
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*/
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readonly buffer?: boolean;
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/**
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Same options as [`stdio`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio).
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@default `inherit` with `$`, `pipe` otherwise
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*/
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readonly stdin?: StdioOption;
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/**
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Same options as [`stdio`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio).
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@default 'pipe'
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*/
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readonly stdout?: StdioOption;
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/**
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Same options as [`stdio`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio).
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@default 'pipe'
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*/
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readonly stderr?: StdioOption;
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/**
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Setting this to `false` resolves the promise with the error instead of rejecting it.
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@default true
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*/
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readonly reject?: boolean;
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/**
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Add an `.all` property on the promise and the resolved value. The property contains the output of the process with `stdout` and `stderr` interleaved.
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@default false
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*/
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readonly all?: boolean;
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/**
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Strip the final [newline character](https://en.wikipedia.org/wiki/Newline) from the output.
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@default true
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*/
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readonly stripFinalNewline?: boolean;
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/**
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Set to `false` if you don't want to extend the environment variables when providing the `env` property.
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@default true
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*/
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readonly extendEnv?: boolean;
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/**
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Current working directory of the child process.
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@default process.cwd()
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*/
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readonly cwd?: string | URL;
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/**
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Environment key-value pairs. Extends automatically from `process.env`. Set `extendEnv` to `false` if you don't want this.
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@default process.env
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*/
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readonly env?: NodeJS.ProcessEnv;
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/**
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Explicitly set the value of `argv[0]` sent to the child process. This will be set to `command` or `file` if not specified.
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*/
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readonly argv0?: string;
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/**
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Child's [stdio](https://nodejs.org/api/child_process.html#child_process_options_stdio) configuration.
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@default 'pipe'
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*/
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readonly stdio?: 'pipe' | 'overlapped' | 'ignore' | 'inherit' | readonly StdioOption[];
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/**
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Specify the kind of serialization used for sending messages between processes when using the `stdio: 'ipc'` option or `execaNode()`:
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- `json`: Uses `JSON.stringify()` and `JSON.parse()`.
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- `advanced`: Uses [`v8.serialize()`](https://nodejs.org/api/v8.html#v8_v8_serialize_value)
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[More info.](https://nodejs.org/api/child_process.html#child_process_advanced_serialization)
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@default 'json'
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*/
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readonly serialization?: 'json' | 'advanced';
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/**
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Prepare child to run independently of its parent process. Specific behavior [depends on the platform](https://nodejs.org/api/child_process.html#child_process_options_detached).
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@default false
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*/
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readonly detached?: boolean;
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/**
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Sets the user identity of the process.
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*/
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readonly uid?: number;
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/**
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Sets the group identity of the process.
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*/
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readonly gid?: number;
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/**
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If `true`, runs `command` inside of a shell. Uses `/bin/sh` on UNIX and `cmd.exe` on Windows. A different shell can be specified as a string. The shell should understand the `-c` switch on UNIX or `/d /s /c` on Windows.
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We recommend against using this option since it is:
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- not cross-platform, encouraging shell-specific syntax.
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- slower, because of the additional shell interpretation.
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- unsafe, potentially allowing command injection.
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@default false
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*/
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readonly shell?: boolean | string;
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/**
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Specify the character encoding used to decode the `stdout` and `stderr` output. If set to `'buffer'` or `null`, then `stdout` and `stderr` will be a `Buffer` instead of a string.
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@default 'utf8'
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*/
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readonly encoding?: EncodingType;
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/**
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If `timeout` is greater than `0`, the parent will send the signal identified by the `killSignal` property (the default is `SIGTERM`) if the child runs longer than `timeout` milliseconds.
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@default 0
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*/
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readonly timeout?: number;
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/**
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Largest amount of data in bytes allowed on `stdout` or `stderr`. Default: 100 MB.
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@default 100_000_000
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*/
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readonly maxBuffer?: number;
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/**
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Signal value to be used when the spawned process will be killed.
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@default 'SIGTERM'
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*/
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readonly killSignal?: string | number;
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/**
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You can abort the spawned process using [`AbortController`](https://developer.mozilla.org/en-US/docs/Web/API/AbortController).
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When `AbortController.abort()` is called, [`.isCanceled`](https://github.com/sindresorhus/execa#iscanceled) becomes `true`.
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@example
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```
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import {execa} from 'execa';
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const abortController = new AbortController();
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const subprocess = execa('node', [], {signal: abortController.signal});
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setTimeout(() => {
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abortController.abort();
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}, 1000);
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try {
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await subprocess;
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} catch (error) {
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console.log(subprocess.killed); // true
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console.log(error.isCanceled); // true
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}
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```
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*/
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readonly signal?: AbortSignal;
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/**
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If `true`, no quoting or escaping of arguments is done on Windows. Ignored on other platforms. This is set to `true` automatically when the `shell` option is `true`.
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@default false
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*/
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readonly windowsVerbatimArguments?: boolean;
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/**
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On Windows, do not create a new console window. Please note this also prevents `CTRL-C` [from working](https://github.com/nodejs/node/issues/29837) on Windows.
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@default true
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*/
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readonly windowsHide?: boolean;
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/**
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Print each command on `stderr` before executing it.
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This can also be enabled by setting the `NODE_DEBUG=execa` environment variable in the current process.
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@default false
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*/
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readonly verbose?: boolean;
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};
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export type Options<EncodingType extends EncodingOption = DefaultEncodingOption> = {
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/**
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Write some input to the `stdin` of your binary.
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If the input is a file, use the `inputFile` option instead.
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*/
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readonly input?: string | Buffer | ReadableStream;
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/**
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Use a file as input to the the `stdin` of your binary.
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If the input is not a file, use the `input` option instead.
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*/
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readonly inputFile?: string;
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} & CommonOptions<EncodingType>;
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export type SyncOptions<EncodingType extends EncodingOption = DefaultEncodingOption> = {
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/**
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Write some input to the `stdin` of your binary.
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If the input is a file, use the `inputFile` option instead.
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*/
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readonly input?: string | Buffer;
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/**
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Use a file as input to the the `stdin` of your binary.
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If the input is not a file, use the `input` option instead.
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*/
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readonly inputFile?: string;
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} & CommonOptions<EncodingType>;
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export type NodeOptions<EncodingType extends EncodingOption = DefaultEncodingOption> = {
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/**
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The Node.js executable to use.
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@default process.execPath
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*/
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readonly nodePath?: string;
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/**
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List of [CLI options](https://nodejs.org/api/cli.html#cli_options) passed to the Node.js executable.
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@default process.execArgv
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*/
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readonly nodeOptions?: string[];
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} & Options<EncodingType>;
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type StdoutStderrAll = string | Buffer | undefined;
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export type ExecaReturnBase<StdoutStderrType extends StdoutStderrAll> = {
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/**
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The file and arguments that were run, for logging purposes.
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This is not escaped and should not be executed directly as a process, including using `execa()` or `execaCommand()`.
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*/
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command: string;
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/**
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Same as `command` but escaped.
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This is meant to be copy and pasted into a shell, for debugging purposes.
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Since the escaping is fairly basic, this should not be executed directly as a process, including using `execa()` or `execaCommand()`.
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*/
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escapedCommand: string;
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/**
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The numeric exit code of the process that was run.
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*/
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exitCode: number;
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/**
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The output of the process on stdout.
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*/
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stdout: StdoutStderrType;
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/**
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The output of the process on stderr.
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*/
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stderr: StdoutStderrType;
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/**
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Whether the process failed to run.
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*/
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failed: boolean;
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/**
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Whether the process timed out.
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*/
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timedOut: boolean;
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/**
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Whether the process was killed.
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*/
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killed: boolean;
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/**
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The name of the signal that was used to terminate the process. For example, `SIGFPE`.
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If a signal terminated the process, this property is defined and included in the error message. Otherwise it is `undefined`.
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*/
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signal?: string;
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/**
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A human-friendly description of the signal that was used to terminate the process. For example, `Floating point arithmetic error`.
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If a signal terminated the process, this property is defined and included in the error message. Otherwise it is `undefined`. It is also `undefined` when the signal is very uncommon which should seldomly happen.
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*/
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signalDescription?: string;
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/**
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The `cwd` of the command if provided in the command options. Otherwise it is `process.cwd()`.
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*/
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cwd: string;
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};
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export type ExecaSyncReturnValue<StdoutStderrType extends StdoutStderrAll = string> = {
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} & ExecaReturnBase<StdoutStderrType>;
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/**
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Result of a child process execution. On success this is a plain object. On failure this is also an `Error` instance.
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The child process fails when:
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- its exit code is not `0`
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- it was killed with a signal
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- timing out
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- being canceled
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- there's not enough memory or there are already too many child processes
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*/
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export type ExecaReturnValue<StdoutStderrType extends StdoutStderrAll = string> = {
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/**
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The output of the process with `stdout` and `stderr` interleaved.
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This is `undefined` if either:
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- the `all` option is `false` (default value)
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- `execaSync()` was used
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*/
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all?: StdoutStderrType;
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/**
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Whether the process was canceled.
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You can cancel the spawned process using the [`signal`](https://github.com/sindresorhus/execa#signal-1) option.
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*/
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isCanceled: boolean;
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} & ExecaSyncReturnValue<StdoutStderrType>;
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export type ExecaSyncError<StdoutStderrType extends StdoutStderrAll = string> = {
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/**
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Error message when the child process failed to run. In addition to the underlying error message, it also contains some information related to why the child process errored.
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The child process stderr then stdout are appended to the end, separated with newlines and not interleaved.
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*/
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message: string;
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/**
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This is the same as the `message` property except it does not include the child process stdout/stderr.
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*/
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shortMessage: string;
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/**
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Original error message. This is the same as the `message` property except it includes neither the child process stdout/stderr nor some additional information added by Execa.
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This is `undefined` unless the child process exited due to an `error` event or a timeout.
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*/
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originalMessage?: string;
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} & Error & ExecaReturnBase<StdoutStderrType>;
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export type ExecaError<StdoutStderrType extends StdoutStderrAll = string> = {
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/**
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The output of the process with `stdout` and `stderr` interleaved.
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This is `undefined` if either:
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- the `all` option is `false` (default value)
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- `execaSync()` was used
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*/
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all?: StdoutStderrType;
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/**
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Whether the process was canceled.
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*/
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isCanceled: boolean;
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} & ExecaSyncError<StdoutStderrType>;
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export type KillOptions = {
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/**
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Milliseconds to wait for the child process to terminate before sending `SIGKILL`.
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Can be disabled with `false`.
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@default 5000
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*/
|
||
|
forceKillAfterTimeout?: number | false;
|
||
|
};
|
||
|
|
||
|
export type ExecaChildPromise<StdoutStderrType extends StdoutStderrAll> = {
|
||
|
/**
|
||
|
Stream combining/interleaving [`stdout`](https://nodejs.org/api/child_process.html#child_process_subprocess_stdout) and [`stderr`](https://nodejs.org/api/child_process.html#child_process_subprocess_stderr).
|
||
|
|
||
|
This is `undefined` if either:
|
||
|
- the `all` option is `false` (the default value)
|
||
|
- both `stdout` and `stderr` options are set to [`'inherit'`, `'ipc'`, `Stream` or `integer`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio)
|
||
|
*/
|
||
|
all?: ReadableStream;
|
||
|
|
||
|
catch<ResultType = never>(
|
||
|
onRejected?: (reason: ExecaError<StdoutStderrType>) => ResultType | PromiseLike<ResultType>
|
||
|
): Promise<ExecaReturnValue<StdoutStderrType> | ResultType>;
|
||
|
|
||
|
/**
|
||
|
Same as the original [`child_process#kill()`](https://nodejs.org/api/child_process.html#child_process_subprocess_kill_signal), except if `signal` is `SIGTERM` (the default value) and the child process is not terminated after 5 seconds, force it by sending `SIGKILL`. Note that this graceful termination does not work on Windows, because Windows [doesn't support signals](https://nodejs.org/api/process.html#process_signal_events) (`SIGKILL` and `SIGTERM` has the same effect of force-killing the process immediately.) If you want to achieve graceful termination on Windows, you have to use other means, such as [`taskkill`](https://github.com/sindresorhus/taskkill).
|
||
|
*/
|
||
|
kill(signal?: string, options?: KillOptions): void;
|
||
|
|
||
|
/**
|
||
|
Similar to [`childProcess.kill()`](https://nodejs.org/api/child_process.html#child_process_subprocess_kill_signal). This used to be preferred when cancelling the child process execution as the error is more descriptive and [`childProcessResult.isCanceled`](#iscanceled) is set to `true`. But now this is deprecated and you should either use `.kill()` or the `signal` option when creating the child process.
|
||
|
*/
|
||
|
cancel(): void;
|
||
|
|
||
|
/**
|
||
|
[Pipe](https://nodejs.org/api/stream.html#readablepipedestination-options) the child process's `stdout` to `target`, which can be:
|
||
|
- Another `execa()` return value
|
||
|
- A writable stream
|
||
|
- A file path string
|
||
|
|
||
|
If the `target` is another `execa()` return value, it is returned. Otherwise, the original `execa()` return value is returned. This allows chaining `pipeStdout()` then `await`ing the final result.
|
||
|
|
||
|
The `stdout` option] must be kept as `pipe`, its default value.
|
||
|
*/
|
||
|
pipeStdout?<Target extends ExecaChildPromise<StdoutStderrAll>>(target: Target): Target;
|
||
|
pipeStdout?(target: WritableStream | string): ExecaChildProcess<StdoutStderrType>;
|
||
|
|
||
|
/**
|
||
|
Like `pipeStdout()` but piping the child process's `stderr` instead.
|
||
|
|
||
|
The `stderr` option must be kept as `pipe`, its default value.
|
||
|
*/
|
||
|
pipeStderr?<Target extends ExecaChildPromise<StdoutStderrAll>>(target: Target): Target;
|
||
|
pipeStderr?(target: WritableStream | string): ExecaChildProcess<StdoutStderrType>;
|
||
|
|
||
|
/**
|
||
|
Combines both `pipeStdout()` and `pipeStderr()`.
|
||
|
|
||
|
Either the `stdout` option or the `stderr` option must be kept as `pipe`, their default value. Also, the `all` option must be set to `true`.
|
||
|
*/
|
||
|
pipeAll?<Target extends ExecaChildPromise<StdoutStderrAll>>(target: Target): Target;
|
||
|
pipeAll?(target: WritableStream | string): ExecaChildProcess<StdoutStderrType>;
|
||
|
};
|
||
|
|
||
|
export type ExecaChildProcess<StdoutStderrType extends StdoutStderrAll = string> = ChildProcess &
|
||
|
ExecaChildPromise<StdoutStderrType> &
|
||
|
Promise<ExecaReturnValue<StdoutStderrType>>;
|
||
|
|
||
|
/**
|
||
|
Executes a command using `file ...arguments`. `arguments` are specified as an array of strings. Returns a `childProcess`.
|
||
|
|
||
|
Arguments are automatically escaped. They can contain any character, including spaces.
|
||
|
|
||
|
This is the preferred method when executing single commands.
|
||
|
|
||
|
@param file - The program/script to execute.
|
||
|
@param arguments - Arguments to pass to `file` on execution.
|
||
|
@returns An `ExecaChildProcess` that is both:
|
||
|
- a `Promise` resolving or rejecting with a `childProcessResult`.
|
||
|
- a [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess) with some additional methods and properties.
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example <caption>Promise interface</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
const {stdout} = await execa('echo', ['unicorns']);
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Redirect output to a file</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
// Similar to `echo unicorns > stdout.txt` in Bash
|
||
|
await execa('echo', ['unicorns']).pipeStdout('stdout.txt');
|
||
|
|
||
|
// Similar to `echo unicorns 2> stdout.txt` in Bash
|
||
|
await execa('echo', ['unicorns']).pipeStderr('stderr.txt');
|
||
|
|
||
|
// Similar to `echo unicorns &> stdout.txt` in Bash
|
||
|
await execa('echo', ['unicorns'], {all: true}).pipeAll('all.txt');
|
||
|
```
|
||
|
|
||
|
@example <caption>Redirect input from a file</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
// Similar to `cat < stdin.txt` in Bash
|
||
|
const {stdout} = await execa('cat', {inputFile: 'stdin.txt'});
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Save and pipe output from a child process</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
const {stdout} = await execa('echo', ['unicorns']).pipeStdout(process.stdout);
|
||
|
// Prints `unicorns`
|
||
|
console.log(stdout);
|
||
|
// Also returns 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Pipe multiple processes</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
// Similar to `echo unicorns | cat` in Bash
|
||
|
const {stdout} = await execa('echo', ['unicorns']).pipeStdout(execa('cat'));
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Handling errors</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
// Catching an error
|
||
|
try {
|
||
|
await execa('unknown', ['command']);
|
||
|
} catch (error) {
|
||
|
console.log(error);
|
||
|
/*
|
||
|
{
|
||
|
message: 'Command failed with ENOENT: unknown command spawn unknown ENOENT',
|
||
|
errno: -2,
|
||
|
code: 'ENOENT',
|
||
|
syscall: 'spawn unknown',
|
||
|
path: 'unknown',
|
||
|
spawnargs: ['command'],
|
||
|
originalMessage: 'spawn unknown ENOENT',
|
||
|
shortMessage: 'Command failed with ENOENT: unknown command spawn unknown ENOENT',
|
||
|
command: 'unknown command',
|
||
|
escapedCommand: 'unknown command',
|
||
|
stdout: '',
|
||
|
stderr: '',
|
||
|
failed: true,
|
||
|
timedOut: false,
|
||
|
isCanceled: false,
|
||
|
killed: false,
|
||
|
cwd: '/path/to/cwd'
|
||
|
}
|
||
|
\*\/
|
||
|
}
|
||
|
```
|
||
|
|
||
|
@example <caption>Graceful termination</caption>
|
||
|
```
|
||
|
const subprocess = execa('node');
|
||
|
|
||
|
setTimeout(() => {
|
||
|
subprocess.kill('SIGTERM', {
|
||
|
forceKillAfterTimeout: 2000
|
||
|
});
|
||
|
}, 1000);
|
||
|
```
|
||
|
*/
|
||
|
export function execa(
|
||
|
file: string,
|
||
|
arguments?: readonly string[],
|
||
|
options?: Options
|
||
|
): ExecaChildProcess;
|
||
|
export function execa(
|
||
|
file: string,
|
||
|
arguments?: readonly string[],
|
||
|
options?: Options<BufferEncodingOption>
|
||
|
): ExecaChildProcess<Buffer>;
|
||
|
export function execa(file: string, options?: Options): ExecaChildProcess;
|
||
|
export function execa(file: string, options?: Options<BufferEncodingOption>): ExecaChildProcess<Buffer>;
|
||
|
|
||
|
/**
|
||
|
Same as `execa()` but synchronous.
|
||
|
|
||
|
@param file - The program/script to execute.
|
||
|
@param arguments - Arguments to pass to `file` on execution.
|
||
|
@returns A `childProcessResult` object
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example <caption>Promise interface</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
const {stdout} = execaSync('echo', ['unicorns']);
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Redirect input from a file</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
// Similar to `cat < stdin.txt` in Bash
|
||
|
const {stdout} = execaSync('cat', {inputFile: 'stdin.txt'});
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Handling errors</caption>
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
// Catching an error
|
||
|
try {
|
||
|
execaSync('unknown', ['command']);
|
||
|
} catch (error) {
|
||
|
console.log(error);
|
||
|
/*
|
||
|
{
|
||
|
message: 'Command failed with ENOENT: unknown command spawnSync unknown ENOENT',
|
||
|
errno: -2,
|
||
|
code: 'ENOENT',
|
||
|
syscall: 'spawnSync unknown',
|
||
|
path: 'unknown',
|
||
|
spawnargs: ['command'],
|
||
|
originalMessage: 'spawnSync unknown ENOENT',
|
||
|
shortMessage: 'Command failed with ENOENT: unknown command spawnSync unknown ENOENT',
|
||
|
command: 'unknown command',
|
||
|
escapedCommand: 'unknown command',
|
||
|
stdout: '',
|
||
|
stderr: '',
|
||
|
failed: true,
|
||
|
timedOut: false,
|
||
|
isCanceled: false,
|
||
|
killed: false,
|
||
|
cwd: '/path/to/cwd'
|
||
|
}
|
||
|
\*\/
|
||
|
}
|
||
|
```
|
||
|
*/
|
||
|
export function execaSync(
|
||
|
file: string,
|
||
|
arguments?: readonly string[],
|
||
|
options?: SyncOptions
|
||
|
): ExecaSyncReturnValue;
|
||
|
export function execaSync(
|
||
|
file: string,
|
||
|
arguments?: readonly string[],
|
||
|
options?: SyncOptions<BufferEncodingOption>
|
||
|
): ExecaSyncReturnValue<Buffer>;
|
||
|
export function execaSync(file: string, options?: SyncOptions): ExecaSyncReturnValue;
|
||
|
export function execaSync(
|
||
|
file: string,
|
||
|
options?: SyncOptions<BufferEncodingOption>
|
||
|
): ExecaSyncReturnValue<Buffer>;
|
||
|
|
||
|
/**
|
||
|
Executes a command. The `command` string includes both the `file` and its `arguments`. Returns a `childProcess`.
|
||
|
|
||
|
Arguments are automatically escaped. They can contain any character, but spaces must be escaped with a backslash like `execaCommand('echo has\\ space')`.
|
||
|
|
||
|
This is the preferred method when executing a user-supplied `command` string, such as in a REPL.
|
||
|
|
||
|
@param command - The program/script to execute and its arguments.
|
||
|
@returns An `ExecaChildProcess` that is both:
|
||
|
- a `Promise` resolving or rejecting with a `childProcessResult`.
|
||
|
- a [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess) with some additional methods and properties.
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example
|
||
|
```
|
||
|
import {execaCommand} from 'execa';
|
||
|
|
||
|
const {stdout} = await execaCommand('echo unicorns');
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
*/
|
||
|
export function execaCommand(command: string, options?: Options): ExecaChildProcess;
|
||
|
export function execaCommand(command: string, options?: Options<BufferEncodingOption>): ExecaChildProcess<Buffer>;
|
||
|
|
||
|
/**
|
||
|
Same as `execaCommand()` but synchronous.
|
||
|
|
||
|
@param command - The program/script to execute and its arguments.
|
||
|
@returns A `childProcessResult` object
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example
|
||
|
```
|
||
|
import {execaCommandSync} from 'execa';
|
||
|
|
||
|
const {stdout} = execaCommandSync('echo unicorns');
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
*/
|
||
|
export function execaCommandSync(command: string, options?: SyncOptions): ExecaSyncReturnValue;
|
||
|
export function execaCommandSync(command: string, options?: SyncOptions<BufferEncodingOption>): ExecaSyncReturnValue<Buffer>;
|
||
|
|
||
|
type TemplateExpression =
|
||
|
| string
|
||
|
| number
|
||
|
| ExecaReturnValue<string | Buffer>
|
||
|
| ExecaSyncReturnValue<string | Buffer>
|
||
|
| Array<string | number | ExecaReturnValue<string | Buffer> | ExecaSyncReturnValue<string | Buffer>>;
|
||
|
|
||
|
type Execa$<StdoutStderrType extends StdoutStderrAll = string> = {
|
||
|
/**
|
||
|
Returns a new instance of `$` but with different default `options`. Consecutive calls are merged to previous ones.
|
||
|
|
||
|
This can be used to either:
|
||
|
- Set options for a specific command: `` $(options)`command` ``
|
||
|
- Share options for multiple commands: `` const $$ = $(options); $$`command`; $$`otherCommand` ``
|
||
|
|
||
|
@param options - Options to set
|
||
|
@returns A new instance of `$` with those `options` set
|
||
|
|
||
|
@example
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const $$ = $({stdio: 'inherit'});
|
||
|
|
||
|
await $$`echo unicorns`;
|
||
|
//=> 'unicorns'
|
||
|
|
||
|
await $$`echo rainbows`;
|
||
|
//=> 'rainbows'
|
||
|
```
|
||
|
*/
|
||
|
(options: Options<undefined>): Execa$<StdoutStderrType>;
|
||
|
(options: Options): Execa$;
|
||
|
(options: Options<BufferEncodingOption>): Execa$<Buffer>;
|
||
|
(
|
||
|
templates: TemplateStringsArray,
|
||
|
...expressions: TemplateExpression[]
|
||
|
): ExecaChildProcess<StdoutStderrType>;
|
||
|
|
||
|
/**
|
||
|
Same as $\`command\` but synchronous.
|
||
|
|
||
|
@returns A `childProcessResult` object
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example <caption>Basic</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const branch = $.sync`git branch --show-current`;
|
||
|
$.sync`dep deploy --branch=${branch}`;
|
||
|
```
|
||
|
|
||
|
@example <caption>Multiple arguments</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const args = ['unicorns', '&', 'rainbows!'];
|
||
|
const {stdout} = $.sync`echo ${args}`;
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns & rainbows!'
|
||
|
```
|
||
|
|
||
|
@example <caption>With options</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
$.sync({stdio: 'inherit'})`echo unicorns`;
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Shared options</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const $$ = $({stdio: 'inherit'});
|
||
|
|
||
|
$$.sync`echo unicorns`;
|
||
|
//=> 'unicorns'
|
||
|
|
||
|
$$.sync`echo rainbows`;
|
||
|
//=> 'rainbows'
|
||
|
```
|
||
|
*/
|
||
|
sync(
|
||
|
templates: TemplateStringsArray,
|
||
|
...expressions: TemplateExpression[]
|
||
|
): ExecaSyncReturnValue<StdoutStderrType>;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
Executes a command. The `command` string includes both the `file` and its `arguments`. Returns a `childProcess`.
|
||
|
|
||
|
Arguments are automatically escaped. They can contain any character, but spaces must use `${}` like `` $`echo ${'has space'}` ``.
|
||
|
|
||
|
This is the preferred method when executing multiple commands in a script file.
|
||
|
|
||
|
The `command` string can inject any `${value}` with the following types: string, number, `childProcess` or an array of those types. For example: `` $`echo one ${'two'} ${3} ${['four', 'five']}` ``. For `${childProcess}`, the process's `stdout` is used.
|
||
|
|
||
|
@returns An `ExecaChildProcess` that is both:
|
||
|
- a `Promise` resolving or rejecting with a `childProcessResult`.
|
||
|
- a [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess) with some additional methods and properties.
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example <caption>Basic</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const branch = await $`git branch --show-current`;
|
||
|
await $`dep deploy --branch=${branch}`;
|
||
|
```
|
||
|
|
||
|
@example <caption>Multiple arguments</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const args = ['unicorns', '&', 'rainbows!'];
|
||
|
const {stdout} = await $`echo ${args}`;
|
||
|
console.log(stdout);
|
||
|
//=> 'unicorns & rainbows!'
|
||
|
```
|
||
|
|
||
|
@example <caption>With options</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
await $({stdio: 'inherit'})`echo unicorns`;
|
||
|
//=> 'unicorns'
|
||
|
```
|
||
|
|
||
|
@example <caption>Shared options</caption>
|
||
|
```
|
||
|
import {$} from 'execa';
|
||
|
|
||
|
const $$ = $({stdio: 'inherit'});
|
||
|
|
||
|
await $$`echo unicorns`;
|
||
|
//=> 'unicorns'
|
||
|
|
||
|
await $$`echo rainbows`;
|
||
|
//=> 'rainbows'
|
||
|
```
|
||
|
*/
|
||
|
export const $: Execa$;
|
||
|
|
||
|
/**
|
||
|
Execute a Node.js script as a child process.
|
||
|
|
||
|
Arguments are automatically escaped. They can contain any character, including spaces.
|
||
|
|
||
|
This is the preferred method when executing Node.js files.
|
||
|
|
||
|
Like [`child_process#fork()`](https://nodejs.org/api/child_process.html#child_process_child_process_fork_modulepath_args_options):
|
||
|
- the current Node version and options are used. This can be overridden using the `nodePath` and `nodeOptions` options.
|
||
|
- the `shell` option cannot be used
|
||
|
- an extra channel [`ipc`](https://nodejs.org/api/child_process.html#child_process_options_stdio) is passed to `stdio`
|
||
|
|
||
|
@param scriptPath - Node.js script to execute.
|
||
|
@param arguments - Arguments to pass to `scriptPath` on execution.
|
||
|
@returns An `ExecaChildProcess` that is both:
|
||
|
- a `Promise` resolving or rejecting with a `childProcessResult`.
|
||
|
- a [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess) with some additional methods and properties.
|
||
|
@throws A `childProcessResult` error
|
||
|
|
||
|
@example
|
||
|
```
|
||
|
import {execa} from 'execa';
|
||
|
|
||
|
await execaNode('scriptPath', ['argument']);
|
||
|
```
|
||
|
*/
|
||
|
export function execaNode(
|
||
|
scriptPath: string,
|
||
|
arguments?: readonly string[],
|
||
|
options?: NodeOptions
|
||
|
): ExecaChildProcess;
|
||
|
export function execaNode(
|
||
|
scriptPath: string,
|
||
|
arguments?: readonly string[],
|
||
|
options?: NodeOptions<BufferEncodingOption>
|
||
|
): ExecaChildProcess<Buffer>;
|
||
|
export function execaNode(scriptPath: string, options?: NodeOptions): ExecaChildProcess;
|
||
|
export function execaNode(scriptPath: string, options?: NodeOptions<BufferEncodingOption>): ExecaChildProcess<Buffer>;
|