Add preferLocal and addExecaPath options

index.d.ts

@@ -1,4 +1,4 @@
-export interface RunPathOptions {
+type CommonOptions = {
 	/**
 	Working directory.
 
@@ -7,46 +7,50 @@ export interface RunPathOptions {
 	readonly cwd?: string | URL;
 
 	/**
-	PATH to be appended. Default: [`PATH`](https://github.com/sindresorhus/path-key).
-
-	Set it to an empty string to exclude the default PATH.
-	*/
-	readonly path?: string;
-
-	/**
-	Path to the Node.js executable to use in child processes if that is different from the current one. Its directory is pushed to the front of PATH.
+	The path to the current Node.js executable.
 
 	This can be either an absolute path or a path relative to the `cwd` option.
 
-	@default process.execPath
+	@default [process.execPath](https://nodejs.org/api/process.html#processexecpath)
 	*/
 	readonly execPath?: string | URL;
-}
-
-export type ProcessEnv = Record<string, string | undefined>;
 
-export interface EnvOptions {
 	/**
-	The working directory.
+	Whether to push the current Node.js executable's directory (`execPath` option) to the front of PATH.
 
-	@default process.cwd()
+	@default true
 	*/
-	readonly cwd?: string | URL;
+	readonly addExecPath?: boolean;
 
 	/**
-	Accepts an object of environment variables, like `process.env`, and modifies the PATH using the correct [PATH key](https://github.com/sindresorhus/path-key). Use this if you're modifying the PATH for use in the `child_process` options.
+	Whether to push the locally installed binaries' directory to the front of PATH.
+
+	@default true
 	*/
-	readonly env?: ProcessEnv;
+	readonly preferLocal?: boolean;
+};
 
+export type RunPathOptions = CommonOptions & {
 	/**
-	The path to the current Node.js executable. Its directory is pushed to the front of PATH.
+	PATH to be appended.
 
-	This can be either an absolute path or a path relative to the `cwd` option.
+	Set it to an empty string to exclude the default PATH.
 
-	@default process.execPath
+	@default [`PATH`](https://github.com/sindresorhus/path-key)
 	*/
-	readonly execPath?: string | URL;
-}
+	readonly path?: string;
+};
+
+export type ProcessEnv = Record<string, string | undefined>;
+
+export type EnvOptions = CommonOptions & {
+	/**
+	Accepts an object of environment variables, like `process.env`, and modifies the PATH using the correct [PATH key](https://github.com/sindresorhus/path-key). Use this if you're modifying the PATH for use in the `child_process` options.
+
+	@default [process.env](https://nodejs.org/api/process.html#processenv)
+	*/
+	readonly env?: ProcessEnv;
+};
 
 /**
 Get your [PATH](https://en.wikipedia.org/wiki/PATH_(variable)) prepended with locally installed binaries.
@@ -68,6 +72,8 @@ console.log(npmRunPath());
 export function npmRunPath(options?: RunPathOptions): string;
 
 /**
+Get your [PATH](https://en.wikipedia.org/wiki/PATH_(variable)) prepended with locally installed binaries.
+
 @returns The augmented [`process.env`](https://nodejs.org/api/process.html#process_process_env) object.
 
 @example

index.js

@@ -1,39 +1,52 @@
 import process from 'node:process';
-import path from 'node:path';
-import url from 'node:url';
+import {resolve, join, delimiter} from 'node:path';
+import {fileURLToPath} from 'node:url';
 import pathKey from 'path-key';
 
-export function npmRunPath(options = {}) {
-	const {
-		cwd = process.cwd(),
-		path: path_ = process.env[pathKey()],
-		execPath = process.execPath,
-	} = options;
+export const npmRunPath = ({
+	cwd = process.cwd(),
+	path = process.env[pathKey()],
+	preferLocal = true,
+	execPath = process.execPath,
+	addExecPath = true,
+} = {}) => {
+	const cwdString = cwd instanceof URL ? fileURLToPath(cwd) : cwd;
+	const cwdPath = resolve(cwdString);
+	const result = [];
+
+	if (preferLocal) {
+		applyPreferLocal(result, cwdPath);
+	}
+
+	if (addExecPath) {
+		applyExecPath(result, execPath, cwdPath);
+	}
+
+	return [...result, path].join(delimiter);
+};
 
+const applyPreferLocal = (result, cwdPath) => {
 	let previous;
-	const execPathString = execPath instanceof URL ? url.fileURLToPath(execPath) : execPath;
-	const cwdString = cwd instanceof URL ? url.fileURLToPath(cwd) : cwd;
-	let cwdPath = path.resolve(cwdString);
-	const result = [];
 
 	while (previous !== cwdPath) {
-		result.push(path.join(cwdPath, 'node_modules/.bin'));
+		result.push(join(cwdPath, 'node_modules/.bin'));
 		previous = cwdPath;
-		cwdPath = path.resolve(cwdPath, '..');
+		cwdPath = resolve(cwdPath, '..');
 	}
+};
 
-	// Ensure the running `node` binary is used.
-	result.push(path.resolve(cwdString, execPathString, '..'));
-
-	return [...result, path_].join(path.delimiter);
-}
+// Ensure the running `node` binary is used
+const applyExecPath = (result, execPath, cwdPath) => {
+	const execPathString = execPath instanceof URL ? fileURLToPath(execPath) : execPath;
+	result.push(resolve(cwdPath, execPathString, '..'));
+};
 
-export function npmRunPathEnv({env = process.env, ...options} = {}) {
+export const npmRunPathEnv = ({env = process.env, ...options} = {}) => {
 	env = {...env};
 
 	const path = pathKey({env});
 	options.path = env[path];
 	env[path] = npmRunPath(options);
 
 	return env;
-}
+};

index.test-d.ts

@@ -1,17 +1,38 @@
 import process from 'node:process';
-import {expectType} from 'tsd';
+import {expectType, expectError} from 'tsd';
 import {npmRunPath, npmRunPathEnv, ProcessEnv} from './index.js';
 
+const fileUrl = new URL('file:///foo');
+
 expectType<string>(npmRunPath());
 expectType<string>(npmRunPath({cwd: '/foo'}));
-expectType<string>(npmRunPath({cwd: new URL('file:///foo')}));
+expectType<string>(npmRunPath({cwd: fileUrl}));
+expectError(npmRunPath({cwd: false}));
 expectType<string>(npmRunPath({path: '/usr/local/bin'}));
+expectError(npmRunPath({path: fileUrl}));
+expectError(npmRunPath({path: false}));
 expectType<string>(npmRunPath({execPath: '/usr/local/bin'}));
-expectType<string>(npmRunPath({execPath: new URL('file:///usr/local/bin')}));
+expectType<string>(npmRunPath({execPath: fileUrl}));
+expectError(npmRunPath({execPath: false}));
+expectType<string>(npmRunPath({addExecPath: false}));
+expectError(npmRunPath({addExecPath: ''}));
+expectType<string>(npmRunPath({preferLocal: false}));
+expectError(npmRunPath({preferLocal: ''}));
 
 expectType<ProcessEnv>(npmRunPathEnv());
 expectType<ProcessEnv>(npmRunPathEnv({cwd: '/foo'}));
-expectType<ProcessEnv>(npmRunPathEnv({cwd: new URL('file:///foo')}));
+expectType<ProcessEnv>(npmRunPathEnv({cwd: fileUrl}));
+expectError(npmRunPathEnv({cwd: false}));
 expectType<ProcessEnv>(npmRunPathEnv({env: process.env})); // eslint-disable-line @typescript-eslint/no-unsafe-assignment
+expectType<ProcessEnv>(npmRunPathEnv({env: {foo: 'bar'}}));
+expectType<ProcessEnv>(npmRunPathEnv({env: {foo: undefined}}));
+expectError(npmRunPath({env: false}));
+expectError(npmRunPath({env: {[Symbol('key')]: 'bar'}}));
+expectError(npmRunPath({env: {foo: false}}));
 expectType<ProcessEnv>(npmRunPathEnv({execPath: '/usr/local/bin'}));
-expectType<ProcessEnv>(npmRunPathEnv({execPath: new URL('file:///usr/local/bin')}));
+expectType<ProcessEnv>(npmRunPathEnv({execPath: fileUrl}));
+expectError(npmRunPath({execPath: false}));
+expectType<ProcessEnv>(npmRunPathEnv({addExecPath: false}));
+expectError(npmRunPathEnv({addExecPath: ''}));
+expectType<ProcessEnv>(npmRunPathEnv({preferLocal: false}));
+expectError(npmRunPathEnv({preferLocal: ''}));

readme.md

@@ -32,66 +32,71 @@ childProcess.execFileSync('foo', {
 
 ### npmRunPath(options?)
 
+`options`: [`Options`](#options)\
+_Returns_: `string`
+
 Returns the augmented PATH string.
 
-#### options
+### npmRunPathEnv(options?)
+
+`options`: [`Options`](#options)\
+_Returns_: `object`
+
+Returns the augmented [`process.env`](https://nodejs.org/api/process.html#process_process_env) object.
+
+### options
 
 Type: `object`
 
-##### cwd
+#### cwd
 
 Type: `string | URL`\
 Default: `process.cwd()`
 
 The working directory.
 
-##### path
-
-Type: `string`\
-Default: [`PATH`](https://github.com/sindresorhus/path-key)
-
-The PATH to be appended.
-
-Set it to an empty string to exclude the default PATH.
-
-##### execPath
+#### execPath
 
 Type: `string | URL`\
-Default: `process.execPath`
+Default: [`process.execPath`](https://nodejs.org/api/process.html#processexecpath)
 
-The path to the current Node.js executable. Its directory is pushed to the front of PATH.
+The path to the current Node.js executable.
 
 This can be either an absolute path or a path relative to the [`cwd` option](#cwd).
 
-### npmRunPathEnv(options?)
+#### addExecPath
 
-Returns the augmented [`process.env`](https://nodejs.org/api/process.html#process_process_env) object.
+Type: `boolean`\
+Default: `true`
 
-#### options
+Whether to push the current Node.js executable's directory ([`execPath`](#execpath) option) to the front of PATH.
 
-Type: `object`
+#### preferLocal
 
-##### cwd
+Type: `boolean`\
+Default: `true`
 
-Type: `string | URL`\
-Default: `process.cwd()`
+Whether to push the locally installed binaries' directory to the front of PATH.
 
-The working directory.
+#### path
 
-##### env
+Type: `string`\
+Default: [`PATH`](https://github.com/sindresorhus/path-key)
 
-Type: `object`
+The PATH to be appended.
 
-Accepts an object of environment variables, like `process.env`, and modifies the PATH using the correct [PATH key](https://github.com/sindresorhus/path-key). Use this if you're modifying the PATH for use in the `child_process` options.
+Set it to an empty string to exclude the default PATH.
 
-##### execPath
+Only available with [`npmRunPath()`](#npmrunpathoptions), not [`npmRunPathEnv()`](#npmrunpathenvoptions).
 
-Type: `string`\
-Default: `process.execPath`
+#### env
 
-The path to the Node.js executable to use in child processes if that is different from the current one. Its directory is pushed to the front of PATH.
+Type: `object`\
+Default: [`process.env`](https://nodejs.org/api/process.html#processenv)
 
-This can be either an absolute path or a path relative to the [`cwd` option](#cwd).
+Accepts an object of environment variables, like `process.env`, and modifies the PATH using the correct [PATH key](https://github.com/sindresorhus/path-key). Use this if you're modifying the PATH for use in the `child_process` options.
+
+Only available with [`npmRunPathEnv()`](#npmrunpathenvoptions), not [`npmRunPath()`](#npmrunpathoptions).
 
 ## Related