Switch from jest to vitest for unit testing (#351)

Author: trivikr

jest.config.js

@@ -36,29 +36,28 @@
     "build": "tsc",
     "lint": "eslint 'src/**/*.ts'",
     "release": "yarn build && changeset publish",
-    "test": "jest"
+    "test": "vitest"
   },
   "dependencies": {
     "jscodeshift": "0.14.0"
   },
   "devDependencies": {
     "@changesets/cli": "^2.21.0",
     "@tsconfig/node14": "^1.0.3",
-    "@types/jest": "^29.2.3",
     "@types/jscodeshift": "^0.11.5",
     "@types/node": "^14.18.33",
     "@typescript-eslint/eslint-plugin": "^5.43.0",
     "@typescript-eslint/parser": "^5.43.0",
     "aws-sdk": "2.1288.0",
     "eslint": "^8.27.0",
     "eslint-plugin-simple-import-sort": "^8.0.0",
-    "jest": "^29.3.1",
     "lint-staged": "^13.0.3",
     "prettier": "2.7.1",
     "simple-git-hooks": "^2.8.1",
-    "ts-jest": "^29.0.3",
     "tsx": "^3.12.1",
-    "typescript": "~4.9.4"
+    "typescript": "~4.9.4",
+    "vite": "^4.0.3",
+    "vitest": "^0.26.2"
   },
   "engines": {
     "node": ">=14.0.0"

package.json

@@ -1,3 +1,5 @@
+import { describe, expect, it } from "vitest";
+
 import { CLIENT_NAMES_MAP } from "../config";
 import { getV3ClientName } from "./getV3ClientName";
 

src/transforms/v2-to-v3/client-names/getV3ClientName.spec.ts

@@ -1,3 +1,5 @@
+import { describe, expect, it } from "vitest";
+
 import { CLIENT_PACKAGE_NAMES_MAP } from "../config";
 import { getV3ClientPackageName } from "./getV3ClientPackageName";
 

src/transforms/v2-to-v3/client-names/getV3ClientPackageName.spec.ts

@@ -2,12 +2,11 @@ import { readdirSync } from "fs";
 import { readFile } from "fs/promises";
 import jscodeshift from "jscodeshift";
 import { join } from "path";
+import { describe, expect, it } from "vitest";
 
 import transform from "./transformer";
 
 describe("v2-to-v3", () => {
-  jest.setTimeout(30000);
-
   const inputFileRegex = /(.*).input.[jt]sx?$/;
   const fixtureDir = join(__dirname, "__fixtures__");
   const fixtureSubDirs = readdirSync(fixtureDir, { withFileTypes: true })
@@ -52,7 +51,8 @@ describe("v2-to-v3", () => {
         });
 
         expect(output.trim()).toEqual(outputCode.trim());
-      }
+      },
+      60000
     );
   });
 });

src/transforms/v2-to-v3/transformer.spec.ts

@@ -1,3 +1,5 @@
+import { describe, expect, it } from "vitest";
+
 import { isTypeScriptFile } from "./isTypeScriptFile";
 
 describe(isTypeScriptFile.name, () => {