Add performance tests base (anuraghazra#3141)

* Add basic bench tests

* dev

.github/workflows/test.yml

@@ -35,6 +35,10 @@ jobs:
         run: |
           npm run lint
 
+      - name: Run bench tests
+        run: |
+          npm run bench
+
       - name: Run Prettier
         run: |
           npm run format:check

.gitignore

@@ -4,6 +4,7 @@ node_modules
 *.lock
 .idea/
 coverage
+benchmarks
 vercel_token
 
 # IDE

jest.bench.config.js

@@ -0,0 +1,16 @@
+export default {
+  // Jest-bench need its own test environment to function
+  testEnvironment: "jest-bench/environment",
+  testEnvironmentOptions: {
+    // still Jest-bench environment will run your environment if you specify it here
+    testEnvironment: "jest-environment-node",
+    testEnvironmentOptions: {
+      // specify any option for your environment
+    },
+  },
+  // always include "default" reporter along with Jest-bench reporter
+  // for error reporting
+  reporters: ["default", "jest-bench/reporter"],
+  // will pick up "*.bench.js" file.
+  testRegex: "(\\.bench)\\.(ts|tsx|js)$",
+};