This PR adds a --pass-with-no-tests option.

This allows for parity with vitest's [`--passWithNoTests`](https://vitest.dev/guide/cli.html#passwithnotests) and jest's [`--passWithNoTests`](https://jestjs.io/docs/cli#--passwithnotests) options.

Author: whitneyit

source/cli.ts

@@ -11,13 +11,14 @@ const cli = meow(`
 	  The given directory must contain a package.json and a typings file.
 
 	Info
-	  --help           Display help text
-	  --version        Display version info
+	  --help                Display help text
+	  --version             Display version info
 
 	Options
-	  --typings    -t  Type definition file to test  [Default: "types" property in package.json]
-	  --files      -f  Glob of files to test         [Default: '/path/test-d/**/*.test-d.ts' or '.tsx']
-	  --show-diff      Show type error diffs         [Default: don't show]
+	  --typings    -t       Type definition file to test  [Default: "types" property in package.json]
+	  --files      -f       Glob of files to test         [Default: '/path/test-d/**/*.test-d.ts' or '.tsx']
+	  --show-diff           Show type error diffs         [Default: don't show]
+	  --pass-with-no-tests  Pass when no tests are found  [Default: false]
 
 	Examples
 	  $ tsd /path/to/project
@@ -42,6 +43,10 @@ const cli = meow(`
 		showDiff: {
 			type: 'boolean',
 		},
+		passWithNoTests: {
+			default: false,
+			type: 'boolean',
+		},
 	},
 });
 
@@ -64,9 +69,9 @@ const exit = (message: string, {isError = true}: {isError?: boolean} = {}) => {
 (async () => {
 	try {
 		const cwd = cli.input.length > 0 ? cli.input[0] : process.cwd();
-		const {typings: typingsFile, files: testFiles, showDiff} = cli.flags;
+		const {typings: typingsFile, files: testFiles, showDiff, passWithNoTests} = cli.flags;
 
-		const diagnostics = await tsd({cwd, typingsFile, testFiles});
+		const diagnostics = await tsd({cwd, typingsFile, testFiles, passWithNoTests});
 
 		if (diagnostics.length > 0) {
 			const hasErrors = diagnostics.some(diagnostic => diagnostic.severity === 'error');

source/lib/index.ts

@@ -11,6 +11,7 @@ export interface Options {
 	cwd: string;
 	typingsFile?: string;
 	testFiles?: readonly string[];
+	passWithNoTests?: boolean;
 }
 
 const findTypingsFile = async (pkg: PackageJsonWithTsdConfig, options: Options): Promise<string> => {
@@ -39,9 +40,13 @@ const normalizeTypingsFilePath = (typingsFilePath: string, options: Options) =>
 	return typingsFilePath;
 };
 
-const findCustomTestFiles = async (testFilesPattern: readonly string[], cwd: string) => {
+const findCustomTestFiles = async (testFilesPattern: readonly string[], cwd: string, passWithNoTests: boolean) => {
 	const testFiles = await globby(testFilesPattern, {cwd});
 
+	if (testFiles.length === 0 && passWithNoTests) {
+		return [];
+	}
+
 	if (testFiles.length === 0) {
 		throw new TsdError('Could not find any test files with the given pattern(s). Create one and try again.');
 	}
@@ -50,8 +55,10 @@ const findCustomTestFiles = async (testFilesPattern: readonly string[], cwd: str
 };
 
 const findTestFiles = async (typingsFilePath: string, options: Options & {config: Config}) => {
+	const passWithNoTests = options.passWithNoTests === true;
+
 	if (options.testFiles?.length) {
-		return findCustomTestFiles(options.testFiles, options.cwd);
+		return findCustomTestFiles(options.testFiles, options.cwd, passWithNoTests);
 	}
 
 	// Return only the filename if the `typingsFile` option is used.
@@ -64,6 +71,10 @@ const findTestFiles = async (typingsFilePath: string, options: Options & {config
 	let testFiles = await globby([testFile, tsxTestFile], {cwd: options.cwd});
 	const testDirExists = await pathExists(path.join(options.cwd, testDir));
 
+	if (testFiles.length === 0 && passWithNoTests) {
+		return [];
+	}
+
 	if (testFiles.length === 0 && !testDirExists) {
 		throw new TsdError(`The test file \`${testFile}\` or \`${tsxTestFile}\` does not exist in \`${options.cwd}\`. Create one and try again.`);
 	}

source/test/cli.ts

@@ -123,6 +123,32 @@ test('cli typings and files flags', async t => {
 	]);
 });
 
+test('cli passWithNoTests flag', async t => {
+	const runTest = async (arg: '--passWithNoTests') => {
+		const {exitCode} = await execa('../../../cli.js', [arg], {
+			cwd: path.join(__dirname, 'fixtures/no-test')
+		});
+
+		t.is(exitCode, 0);
+	};
+
+	await runTest('--passWithNoTests');
+});
+
+test('cli passWithNoTests flag and files', async t => {
+	const runTest = async (arg: '--pass-with-no-tests') => {
+		const testFile = path.join(__dirname, 'fixtures/does-not-exist.test-d.ts');
+
+		const {exitCode} = await execa('../../../cli.js', [arg, `--files ${testFile}`], {
+			cwd: path.join(__dirname, 'fixtures/no-test')
+		});
+
+		t.is(exitCode, 0);
+	};
+
+	await runTest('--pass-with-no-tests');
+});
+
 test('tsd logs stacktrace on failure', async t => {
 	const {exitCode, stderr} = await t.throwsAsync<ExecaError>(execa('../../../cli.js', {
 		cwd: path.join(__dirname, 'fixtures/empty-package-json')