test: migrate mock files to TypeScript

.github/workflows/ci.yml

@@ -31,15 +31,15 @@ jobs:
       - name: Install Dependencies
         run: yarn --immutable
 
+      - name: Build and Test
+        run: yarn run-s build test
+
       - name: Lint
         run: yarn lint
         if: matrix.node == 18
         env:
           EFF_NO_LINK_RULES: true
           PARSER_NO_WATCH: true
 
-      - name: Build and Test
-        run: yarn run-s build test
-
       - name: Codecov
         uses: codecov/codecov-action@v3

__mocks__/execa.js → __mocks__/execa.ts

@@ -8,16 +8,18 @@ const mockStream = () => ({
 const mockExeca = jest.fn().mockReturnValue({
   stdout: mockStream(),
   stderr: mockStream(),
-  // eslint-disable-next-line no-empty-function
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   kill: () => {},
 })
 
 const mockExecaSync = jest.fn().mockReturnValue({
   stdout: '',
   stderr: '',
-  // eslint-disable-next-line no-empty-function
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   kill: () => {},
 })
 
-module.exports = mockExeca
-module.exports.sync = mockExecaSync
+export = mockExeca
+
+// @ts-expect-error -- intended
+mockExeca.sync = mockExecaSync

__mocks__/prettier.ts

@@ -0,0 +1,17 @@
+import path from 'path'
+
+export = {
+  format: jest.fn((input: string) => 'formatted:' + input),
+  resolveConfig: {
+    sync: jest.fn((file: string) => ({ file })),
+  },
+  getFileInfo: {
+    sync: jest.fn((file: string) => {
+      const ext = path.extname(file)
+      if (ext === '.js' || ext === '.md') {
+        return { ignored: false, inferredParser: 'babel' }
+      }
+      return { ignored: false, inferredParser: null }
+    }),
+  },
+}

package.json

@@ -121,7 +121,7 @@
   "prettier": "@1stg/prettier-config",
   "size-limit": [
     {
-      "path": "src/index.js",
+      "path": "src/index.ts",
       "limit": "1KB"
     }
   ]