fix: use tsd instead of forked mlh-tsd

e2e/__fixtures__/docblock/concat.test.ts

@@ -2,7 +2,7 @@
  * @type concat.d.ts
  */
 
-import { expectType } from 'mlh-tsd';
+import { expectType } from 'tsd';
 import concat from './concat';
 
 expectType<string>(concat('pre', 'fix'));

e2e/__fixtures__/failing/index.test.ts

@@ -1,4 +1,4 @@
-import { expectType } from 'mlh-tsd';
+import { expectType } from 'tsd';
 import concat from '.';
 
 expectType<string>(concat('pre', 'fix'));

e2e/__fixtures__/no-assertions/index.d.ts

@@ -0,0 +1,6 @@
+/* eslint-disable no-unused-vars */
+declare const concat: {
+  (a: string, b: string): string;
+};
+
+export default concat;

e2e/__fixtures__/no-assertions/index.test.ts

@@ -0,0 +1,5 @@
+import concat from '.';
+
+concat('one', 'two');
+concat(1, 2);
+concat([1, 2]);

e2e/__fixtures__/no-assertions/package.json

@@ -0,0 +1,6 @@
+{
+  "jest": {
+    "runner": "../../../src/",
+    "testMatch": ["**/*.test.ts"]
+  }
+}

e2e/__fixtures__/passing/index.test.ts

@@ -1,4 +1,4 @@
-import { expectType } from 'mlh-tsd';
+import { expectType } from 'tsd';
 import concat from '.';
 
 expectType<string>(concat('pre', 'fix'));

e2e/__fixtures__/pkg-types/types.test.ts

@@ -1,4 +1,4 @@
-import { expectType } from 'mlh-tsd';
+import { expectType } from 'tsd';
 import concat from '.';
 
 expectType<string>(concat('pre', 'fix'));

e2e/__snapshots__/docblock.test.ts.snap

@@ -4,7 +4,7 @@ exports[`reads \`@type\` comment in docblock 1`] = `
 "PASS ./concat.test.ts
   ✓ tsd typecheck
 Test Suites: 1 passed, 1 total
-Tests:       2 passed, 2 total
+Tests:       1 passed, 1 total
 Snapshots:   0 total
 Time:
 Ran all test suites.

e2e/__snapshots__/failing.test.ts.snap

@@ -9,7 +9,7 @@ exports[`works with failing test 1`] = `
         |                    ^
       at index.test.ts:5:20
 Test Suites: 1 failed, 1 total
-Tests:       1 failed, 1 passed, 2 total
+Tests:       1 failed, 1 total
 Snapshots:   0 total
 Time:
 Ran all test suites.

e2e/__snapshots__/no-assertions.test.ts.snap

@@ -0,0 +1,21 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`runs a test file with no assertions 1`] = `
+"FAIL ./index.test.ts
+  ✕ tsd typecheck
+  ● tsd typecheck
+    Argument of type 'number' is not assignable to parameter of type 'string'.
+    > 4 | concat(1, 2);
+        |        ^
+      at index.test.ts:4:8
+    Expected 2 arguments, but got 1.
+    > 5 | concat([1, 2]);
+        | ^
+      at index.test.ts:5:1
+Test Suites: 1 failed, 1 total
+Tests:       1 failed, 1 total
+Snapshots:   0 total
+Time:
+Ran all test suites.
+"
+`;

e2e/__snapshots__/passing.test.ts.snap

@@ -4,7 +4,7 @@ exports[`works with passing test 1`] = `
 "PASS ./index.test.ts
   ✓ tsd typecheck
 Test Suites: 1 passed, 1 total
-Tests:       2 passed, 2 total
+Tests:       1 passed, 1 total
 Snapshots:   0 total
 Time:
 Ran all test suites.

e2e/__snapshots__/pkg-types.test.ts.snap

@@ -4,7 +4,7 @@ exports[`reads \`types\` property in package.json 1`] = `
 "PASS ./types.test.ts
   ✓ tsd typecheck
 Test Suites: 1 passed, 1 total
-Tests:       2 passed, 2 total
+Tests:       1 passed, 1 total
 Snapshots:   0 total
 Time:
 Ran all test suites.

e2e/no-assertions.test.ts

@@ -0,0 +1,6 @@
+import { expect, test } from '@jest/globals';
+import runJest from './runJest';
+
+test('runs a test file with no assertions', async () => {
+  expect(await runJest('no-assertions')).toMatchSnapshot();
+});

jest.config.js

@@ -5,5 +5,5 @@ module.exports = {
       testMatch: ['<rootDir>/e2e/*.test.ts'],
     },
   ],
-  testTimeout: 30000,
+  testTimeout: 60000,
 };

package.json

@@ -21,8 +21,7 @@
     "chalk": "^4.1.2",
     "create-jest-runner": "^0.9.0",
     "graceful-fs": "^4.2.8",
-    "jest-docblock": "^27.0.6",
-    "mlh-tsd": "^0.14.1"
+    "jest-docblock": "^27.0.6"
   },
   "devDependencies": {
     "@babel/core": "^7.15.8",
@@ -37,8 +36,12 @@
     "execa": "^5.1.1",
     "jest": "^27.2.5",
     "prettier": "^2.4.1",
+    "tsd": "^0.18.0",
     "typescript": "^4.4.4"
   },
+  "peerDependencies": {
+    "tsd": ">=0.15.0"
+  },
   "prettier": {
     "arrowParens": "avoid",
     "singleQuote": true

src/run.js

@@ -1,10 +1,9 @@
 const { dirname, join, posix, relative, sep } = require('path');
+const { fail, pass } = require('create-jest-runner');
 const { readFileSync } = require('graceful-fs');
 const { parse } = require('jest-docblock');
-const tsd = require('mlh-tsd');
+const tsd = require('tsd');
 const formatErrorMessage = require('./formatErrorMessage');
-const { pass } = require('./pass');
-const { fail } = require('./fail');
 
 const TEST_TITLE = 'tsd typecheck';
 
@@ -39,34 +38,28 @@ module.exports = async ({ config: { rootDir }, testPath }) => {
 
   const start = Date.now();
 
-  const { diagnostics, numTests } = await tsd.default({
+  const diagnostics = await tsd.default({
     cwd: rootDir,
     testFiles: [normalizeSlashes(testFile)],
     typingsFile,
   });
 
   const end = Date.now();
 
-  const numFailed = diagnostics.length;
-  const numPassed = numTests - numFailed;
-
   if (diagnostics.length > 0) {
     const errorMessage = formatErrorMessage(diagnostics, testFileContents);
 
     return fail({
       start,
       end,
       test: { path: testFile, title: TEST_TITLE },
-      numFailed,
-      numPassed,
       errorMessage,
     });
   }
 
   return pass({
     start,
     end,
-    numPassed,
     test: { path: testFile, title: TEST_TITLE },
   });
 };