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+/// <reference types="node"/>
+import {ChildProcess} from 'child_process';
+import {Stream, Readable as ReadableStream} from 'stream';
+
+declare namespace execa {
+	type StdioOption =
+		| 'pipe'
+		| 'ipc'
+		| 'ignore'
+		| 'inherit'
+		| Stream
+		| number
+		| undefined;
+
+	interface CommonOptions<EncodingType> {
+		/**
+		Kill the spawned process when the parent process exits unless either:
+			- the spawned process is [`detached`](https://nodejs.org/api/child_process.html#child_process_options_detached)
+			- the parent process is terminated abruptly, for example, with `SIGKILL` as opposed to `SIGTERM` or a normal exit
+
+		@default true
+		*/
+		readonly cleanup?: boolean;
+
+		/**
+		Prefer locally installed binaries when looking for a binary to execute.
+
+		If you `$ npm install foo`, you can then `execa('foo')`.
+
+		@default false
+		*/
+		readonly preferLocal?: boolean;
+
+		/**
+		Preferred path to find locally installed binaries in (use with `preferLocal`).
+
+		@default process.cwd()
+		*/
+		readonly localDir?: string;
+
+		/**
+		Path to the Node.js executable to use in child processes.
+
+		This can be either an absolute path or a path relative to the `cwd` option.
+
+		Requires `preferLocal` to be `true`.
+
+		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.
+
+		@default process.execPath
+		*/
+		readonly execPath?: string;
+
+		/**
+		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.
+
+		If the spawned process fails, `error.stdout`, `error.stderr`, and `error.all` will contain the buffered data.
+
+		@default true
+		*/
+		readonly buffer?: boolean;
+
+		/**
+		Same options as [`stdio`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio).
+
+		@default 'pipe'
+		*/
+		readonly stdin?: StdioOption;
+
+		/**
+		Same options as [`stdio`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio).
+
+		@default 'pipe'
+		*/
+		readonly stdout?: StdioOption;
+
+		/**
+		Same options as [`stdio`](https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_options_stdio).
+
+		@default 'pipe'
+		*/
+		readonly stderr?: StdioOption;
+
+		/**
+		Setting this to `false` resolves the promise with the error instead of rejecting it.
+
+		@default true
+		*/
+		readonly reject?: boolean;
+
+		/**
+		Add an `.all` property on the promise and the resolved value. The property contains the output of the process with `stdout` and `stderr` interleaved.
+
+		@default false
+		*/
+		readonly all?: boolean;
+
+		/**
+		Strip the final [newline character](https://en.wikipedia.org/wiki/Newline) from the output.
+
+		@default true
+		*/
+		readonly stripFinalNewline?: boolean;
+
+		/**
+		Set to `false` if you don't want to extend the environment variables when providing the `env` property.
+
+		@default true
+		*/
+		readonly extendEnv?: boolean;
+
+		/**
+		Current working directory of the child process.
+
+		@default process.cwd()
+		*/
+		readonly cwd?: string;
+
+		/**
+		Environment key-value pairs. Extends automatically from `process.env`. Set `extendEnv` to `false` if you don't want this.
+
+		@default process.env
+		*/
+		readonly env?: NodeJS.ProcessEnv;
+
+		/**
+		Explicitly set the value of `argv[0]` sent to the child process. This will be set to `command` or `file` if not specified.
+		*/
+		readonly argv0?: string;
+
+		/**
+		Child's [stdio](https://nodejs.org/api/child_process.html#child_process_options_stdio) configuration.
+
+		@default 'pipe'
+		*/
+		readonly stdio?: 'pipe' | 'ignore' | 'inherit' | readonly StdioOption[];
+
+		/**
+		Specify the kind of serialization used for sending messages between processes when using the `stdio: 'ipc'` option or `execa.node()`:
+			- `json`: Uses `JSON.stringify()` and `JSON.parse()`.
+			- `advanced`: Uses [`v8.serialize()`](https://nodejs.org/api/v8.html#v8_v8_serialize_value)
+
+		Requires Node.js `13.2.0` or later.
+
+		[More info.](https://nodejs.org/api/child_process.html#child_process_advanced_serialization)
+
+		@default 'json'
+		*/
+		readonly serialization?: 'json' | 'advanced';
+
+		/**
+		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).
+
+		@default false
+		*/
+		readonly detached?: boolean;
+
+		/**
+		Sets the user identity of the process.
+		*/
+		readonly uid?: number;
+
+		/**
+		Sets the group identity of the process.
+		*/
+		readonly gid?: number;
+
+		/**
+		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.
+
+		We recommend against using this option since it is:
+		- not cross-platform, encouraging shell-specific syntax.
+		- slower, because of the additional shell interpretation.
+		- unsafe, potentially allowing command injection.
+
+		@default false
+		*/
+		readonly shell?: boolean | string;
+
+		/**
+		Specify the character encoding used to decode the `stdout` and `stderr` output. If set to `null`, then `stdout` and `stderr` will be a `Buffer` instead of a string.
+
+		@default 'utf8'
+		*/
+		readonly encoding?: EncodingType;
+
+		/**
+		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.
+
+		@default 0
+		*/
+		readonly timeout?: number;
+
+		/**
+		Largest amount of data in bytes allowed on `stdout` or `stderr`. Default: 100 MB.
+
+		@default 100_000_000
+		*/
+		readonly maxBuffer?: number;
+
+		/**
+		Signal value to be used when the spawned process will be killed.
+
+		@default 'SIGTERM'
+		*/
+		readonly killSignal?: string | number;
+
+		/**
+		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`.
+
+		@default false
+		*/
+		readonly windowsVerbatimArguments?: boolean;
+
+		/**
+		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.
+
+		@default true
+		*/
+		readonly windowsHide?: boolean;
+	}
+
+	interface Options<EncodingType = string> extends CommonOptions<EncodingType> {
+		/**
+		Write some input to the `stdin` of your binary.
+		*/
+		readonly input?: string | Buffer | ReadableStream;
+	}
+
+	interface SyncOptions<EncodingType = string> extends CommonOptions<EncodingType> {
+		/**
+		Write some input to the `stdin` of your binary.
+		*/
+		readonly input?: string | Buffer;
+	}
+
+	interface NodeOptions<EncodingType = string> extends Options<EncodingType> {
+		/**
+		The Node.js executable to use.
+
+		@default process.execPath
+		*/
+		readonly nodePath?: string;
+
+		/**
+		List of [CLI options](https://nodejs.org/api/cli.html#cli_options) passed to the Node.js executable.
+
+		@default process.execArgv
+		*/
+		readonly nodeOptions?: string[];
+	}
+
+	interface ExecaReturnBase<StdoutStderrType> {
+		/**
+		The file and arguments that were run, for logging purposes.
+
+		This is not escaped and should not be executed directly as a process, including using `execa()` or `execa.command()`.
+		*/
+		command: string;
+
+		/**
+		Same as `command` but escaped.
+
+		This is meant to be copy and pasted into a shell, for debugging purposes.
+		Since the escaping is fairly basic, this should not be executed directly as a process, including using `execa()` or `execa.command()`.
+		*/
+		escapedCommand: string;
+
+		/**
+		The numeric exit code of the process that was run.
+		*/
+		exitCode: number;
+
+		/**
+		The output of the process on stdout.
+		*/
+		stdout: StdoutStderrType;
+
+		/**
+		The output of the process on stderr.
+		*/
+		stderr: StdoutStderrType;
+
+		/**
+		Whether the process failed to run.
+		*/
+		failed: boolean;
+
+		/**
+		Whether the process timed out.
+		*/
+		timedOut: boolean;
+
+		/**
+		Whether the process was killed.
+		*/
+		killed: boolean;
+
+		/**
+		The name of the signal that was used to terminate the process. For example, `SIGFPE`.
+
+		If a signal terminated the process, this property is defined and included in the error message. Otherwise it is `undefined`.
+		*/
+		signal?: string;
+
+		/**
+		A human-friendly description of the signal that was used to terminate the process. For example, `Floating point arithmetic error`.
+
+		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.
+		*/
+		signalDescription?: string;
+	}
+
+	interface ExecaSyncReturnValue<StdoutErrorType = string>
+		extends ExecaReturnBase<StdoutErrorType> {
+	}
+
+	/**
+	Result of a child process execution. On success this is a plain object. On failure this is also an `Error` instance.
+
+	The child process fails when:
+	- its exit code is not `0`
+	- it was killed with a signal
+	- timing out
+	- being canceled
+	- there's not enough memory or there are already too many child processes
+	*/
+	interface ExecaReturnValue<StdoutErrorType = string>
+		extends ExecaSyncReturnValue<StdoutErrorType> {
+		/**
+		The output of the process with `stdout` and `stderr` interleaved.
+
+		This is `undefined` if either:
+		- the `all` option is `false` (default value)
+		- `execa.sync()` was used
+		*/
+		all?: StdoutErrorType;
+
+		/**
+		Whether the process was canceled.
+		*/
+		isCanceled: boolean;
+	}
+
+	interface ExecaSyncError<StdoutErrorType = string>
+		extends Error,
+		ExecaReturnBase<StdoutErrorType> {
+		/**
+		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.
+
+		The child process stderr then stdout are appended to the end, separated with newlines and not interleaved.
+		*/
+		message: string;
+
+		/**
+		This is the same as the `message` property except it does not include the child process stdout/stderr.
+		*/
+		shortMessage: string;
+
+		/**
+		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.
+
+		This is `undefined` unless the child process exited due to an `error` event or a timeout.
+		*/
+		originalMessage?: string;
+	}
+
+	interface ExecaError<StdoutErrorType = string>
+		extends ExecaSyncError<StdoutErrorType> {
+		/**
+		The output of the process with `stdout` and `stderr` interleaved.
+
+		This is `undefined` if either:
+		- the `all` option is `false` (default value)
+		- `execa.sync()` was used
+		*/
+		all?: StdoutErrorType;
+
+		/**
+		Whether the process was canceled.
+		*/
+		isCanceled: boolean;
+	}
+
+	interface KillOptions {
+		/**
+		Milliseconds to wait for the child process to terminate before sending `SIGKILL`.
+
+		Can be disabled with `false`.
+
+		@default 5000
+		*/
+		forceKillAfterTimeout?: number | false;
+	}
+
+	interface ExecaChildPromise<StdoutErrorType> {
+		/**
+		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<StdoutErrorType>) => ResultType | PromiseLike<ResultType>
+		): Promise<ExecaReturnValue<StdoutErrorType> | 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`.
+		*/
+		kill(signal?: string, options?: KillOptions): void;
+
+		/**
+		Similar to [`childProcess.kill()`](https://nodejs.org/api/child_process.html#child_process_subprocess_kill_signal). This is preferred when cancelling the child process execution as the error is more descriptive and [`childProcessResult.isCanceled`](#iscanceled) is set to `true`.
+		*/
+		cancel(): void;
+	}
+
+	type ExecaChildProcess<StdoutErrorType = string> = ChildProcess &
+	ExecaChildPromise<StdoutErrorType> &
+	Promise<ExecaReturnValue<StdoutErrorType>>;
+}
+
+declare const execa: {
+	/**
+	Execute a file.
+
+	Think of this as a mix of `child_process.execFile` and `child_process.spawn`.
+
+	@param file - The program/script to execute.
+	@param arguments - Arguments to pass to `file` on execution.
+	@returns A [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess), which is enhanced to also be a `Promise` for a result `Object` with `stdout` and `stderr` properties.
+
+	@example
+	```
+	import execa = require('execa');
+
+	(async () => {
+		const {stdout} = await execa('echo', ['unicorns']);
+		console.log(stdout);
+		//=> 'unicorns'
+
+		// Cancelling a spawned process
+
+		const subprocess = execa('node');
+
+		setTimeout(() => {
+			subprocess.cancel()
+		}, 1000);
+
+		try {
+			await subprocess;
+		} catch (error) {
+			console.log(subprocess.killed); // true
+			console.log(error.isCanceled); // true
+		}
+	})();
+
+	// Pipe the child process stdout to the current stdout
+	execa('echo', ['unicorns']).stdout.pipe(process.stdout);
+	```
+	*/
+	(
+		file: string,
+		arguments?: readonly string[],
+		options?: execa.Options
+	): execa.ExecaChildProcess;
+	(
+		file: string,
+		arguments?: readonly string[],
+		options?: execa.Options<null>
+	): execa.ExecaChildProcess<Buffer>;
+	(file: string, options?: execa.Options): execa.ExecaChildProcess;
+	(file: string, options?: execa.Options<null>): execa.ExecaChildProcess<
+	Buffer
+	>;
+
+	/**
+	Execute a file synchronously.
+
+	This method throws an `Error` if the command fails.
+
+	@param file - The program/script to execute.
+	@param arguments - Arguments to pass to `file` on execution.
+	@returns A result `Object` with `stdout` and `stderr` properties.
+	*/
+	sync(
+		file: string,
+		arguments?: readonly string[],
+		options?: execa.SyncOptions
+	): execa.ExecaSyncReturnValue;
+	sync(
+		file: string,
+		arguments?: readonly string[],
+		options?: execa.SyncOptions<null>
+	): execa.ExecaSyncReturnValue<Buffer>;
+	sync(file: string, options?: execa.SyncOptions): execa.ExecaSyncReturnValue;
+	sync(
+		file: string,
+		options?: execa.SyncOptions<null>
+	): execa.ExecaSyncReturnValue<Buffer>;
+
+	/**
+	Same as `execa()` except both file and arguments are specified in a single `command` string. For example, `execa('echo', ['unicorns'])` is the same as `execa.command('echo unicorns')`.
+
+	If the file or an argument contains spaces, they must be escaped with backslashes. This matters especially if `command` is not a constant but a variable, for example with `__dirname` or `process.cwd()`. Except for spaces, no escaping/quoting is needed.
+
+	The `shell` option must be used if the `command` uses shell-specific features (for example, `&&` or `||`), as opposed to being a simple `file` followed by its `arguments`.
+
+	@param command - The program/script to execute and its arguments.
+	@returns A [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess), which is enhanced to also be a `Promise` for a result `Object` with `stdout` and `stderr` properties.
+
+	@example
+	```
+	import execa = require('execa');
+
+	(async () => {
+		const {stdout} = await execa.command('echo unicorns');
+		console.log(stdout);
+		//=> 'unicorns'
+	})();
+	```
+	*/
+	command(command: string, options?: execa.Options): execa.ExecaChildProcess;
+	command(command: string, options?: execa.Options<null>): execa.ExecaChildProcess<Buffer>;
+
+	/**
+	Same as `execa.command()` but synchronous.
+
+	@param command - The program/script to execute and its arguments.
+	@returns A result `Object` with `stdout` and `stderr` properties.
+	*/
+	commandSync(command: string, options?: execa.SyncOptions): execa.ExecaSyncReturnValue;
+	commandSync(command: string, options?: execa.SyncOptions<null>): execa.ExecaSyncReturnValue<Buffer>;
+
+	/**
+	Execute a Node.js script as a child process.
+
+	Same as `execa('node', [scriptPath, ...arguments], options)` except (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 `nodeArguments` 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`](#stdio)
+
+	@param scriptPath - Node.js script to execute.
+	@param arguments - Arguments to pass to `scriptPath` on execution.
+	@returns A [`child_process` instance](https://nodejs.org/api/child_process.html#child_process_class_childprocess), which is enhanced to also be a `Promise` for a result `Object` with `stdout` and `stderr` properties.
+	*/
+	node(
+		scriptPath: string,
+		arguments?: readonly string[],
+		options?: execa.NodeOptions
+	): execa.ExecaChildProcess;
+	node(
+		scriptPath: string,
+		arguments?: readonly string[],
+		options?: execa.Options<null>
+	): execa.ExecaChildProcess<Buffer>;
+	node(scriptPath: string, options?: execa.Options): execa.ExecaChildProcess;
+	node(scriptPath: string, options?: execa.Options<null>): execa.ExecaChildProcess<Buffer>;
+};
+
+export = execa;