[CARE-3589] Switch tests to vitest

- it's faster
- it's working with ESM+TS better than jest/ts-jest

Author: e1himself

jest.config.cjs

@@ -36,8 +36,7 @@
         "@babel/plugin-proposal-export-namespace-from": "^7.18.9",
         "@babel/preset-env": "^7.7.1",
         "@babel/preset-typescript": "^7.18.6",
-        "@types/jest": "^29.5.11",
-        "@types/node": "^12.12.9",
+        "@types/node": "^18.19.3",
         "@typescript-eslint/eslint-plugin": "^6.13.2",
         "@typescript-eslint/parser": "^6.13.2",
         "babel-plugin-add-import-extension": "^1.6.0",
@@ -46,13 +45,12 @@
         "eslint": "^8.25.0",
         "eslint-config-prettier": "^8.5.0",
         "eslint-plugin-import": "^2.26.0",
-        "jest": "^29.7.0",
-        "jest-fetch-mock": "^3.0.3",
         "np": "^7.2.0",
         "prettier": "^2.7.1",
         "rimraf": "^3.0.0",
-        "ts-jest": "^29.1.1",
-        "typescript": "^5.3.3"
+        "typescript": "^5.3.3",
+        "vitest": "^1.0.4",
+        "vitest-fetch-mock": "^0.2.2"
     },
     "scripts": {
         "clean": "rimraf dist node_modules",
@@ -66,10 +64,9 @@
         "lint": "eslint ./src --ext=.ts",
         "lint:fix": "npm run lint -- --fix",
         "test": "npm run test:build && npm run test:ts && npm run test:unit",
-        "test:unit": "NODE_OPTIONS=--experimental-vm-modules jest",
+        "test:unit": "vitest run",
         "test:ts": "find src/ -name '*.test.ts' | xargs -I{} tsc --noEmit --strict {}",
         "test:build": "node dist/index.js && tsc --noEmit dist/index.d.ts",
-        "snapshot": "jest --updateSnapshot",
         "prettier:check": "prettier --check './src/**/*.{ts,js}'",
         "prettier:fix": "prettier --write './src/**/*.{ts,js}'",
         "prerelease": "npm run build",

package-lock.json

@@ -1,9 +1,15 @@
 import { readFileSync } from 'fs';
-
-const { version: packageVersion, repository } = JSON.parse(readFileSync('package.json'));
+import { vi, beforeEach, describe, expect, it, afterEach } from 'vitest';
+import type { MockResponseInitFunction } from 'vitest-fetch-mock';
+import createFetchMock from 'vitest-fetch-mock';
 
 import { createClient } from './Client';
 import { Method } from './http';
+import type { CoverageEntry } from './types';
+
+const { version: packageVersion, repository } = JSON.parse(readFileSync('package.json').toString());
+
+const fetch = createFetchMock(vi);
 
 const BASE_URL = 'https://api.prezly.com';
 const DEFAULT_USER_AGENT = `prezly-javascript-sdk/${packageVersion} (+${repository.url})`;
@@ -18,12 +24,15 @@ const DEFAULT_REQUEST_PROPS = {
     },
 };
 
-function successJsonResponse(body, status = 200) {
-    return new Response(JSON.stringify(body), {
-        status,
-        statusText: 'OK',
-        headers: {
-            'Content-Type': 'application/json',
+function successJsonResponse(body: any, status = 200): MockResponseInitFunction {
+    return () => ({
+        body: JSON.stringify(body),
+        init: {
+            status,
+            statusText: 'OK',
+            headers: {
+                'Content-Type': 'application/json',
+            },
         },
     });
 }
@@ -34,23 +43,30 @@ describe('Client', () => {
 
     beforeEach(() => {
         fetch.resetMocks();
+        fetch.enableMocks();
+    });
+
+    afterEach(() => {
+        fetch.disableMocks();
     });
 
     describe('Coverage', () => {
-        const getListPayload = (coverage) => ({
-            sort: '-published_at',
-            pagination: {
-                offset: 0,
-                limit: 20,
-                matched_records_number: coverage.length,
-                total_records_number: coverage.length,
-            },
-            coverage,
-        });
+        function getListPayload(coverage: Partial<CoverageEntry>[]) {
+            return {
+                sort: '-published_at',
+                pagination: {
+                    offset: 0,
+                    limit: 20,
+                    matched_records_number: coverage.length,
+                    total_records_number: coverage.length,
+                },
+                coverage,
+            };
+        }
 
         it('should call the list endpoint', async () => {
             const expectedPayload = getListPayload([]);
-            fetch.mockResolvedValueOnce(successJsonResponse(expectedPayload));
+            fetch.mockResponseOnce(successJsonResponse(expectedPayload));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -66,7 +82,7 @@ describe('Client', () => {
 
         it('should call the GET :id endpoint', async () => {
             const coverage = { id: 123 };
-            fetch.mockResolvedValueOnce(successJsonResponse({ coverage }));
+            fetch.mockResponseOnce(successJsonResponse({ coverage }));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -82,9 +98,10 @@ describe('Client', () => {
 
         it('should allow filtering by externalReferenceId', async () => {
             const externalReferenceId = 'external-ref-id';
+
             const coverage = { id: 123 };
             const expectedPayload = getListPayload([coverage]);
-            fetch.mockResolvedValueOnce(successJsonResponse(expectedPayload));
+            fetch.mockResponseOnce(successJsonResponse(expectedPayload));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -101,7 +118,7 @@ describe('Client', () => {
 
         it('should return null from externalReferenceId no results found', async () => {
             const expectedPayload = getListPayload([]);
-            fetch.mockResolvedValueOnce(successJsonResponse(expectedPayload));
+            fetch.mockResponseOnce(successJsonResponse(expectedPayload));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -115,7 +132,7 @@ describe('Client', () => {
             const coverage = {
                 url: 'https://example.com',
             };
-            fetch.mockResolvedValueOnce(successJsonResponse({ coverage }));
+            fetch.mockResponseOnce(successJsonResponse({ coverage }));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -135,7 +152,7 @@ describe('Client', () => {
             const coverage = {
                 url: 'https://prezly.com',
             };
-            fetch.mockResolvedValueOnce(successJsonResponse({ coverage }));
+            fetch.mockResponseOnce(successJsonResponse({ coverage }));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -152,7 +169,7 @@ describe('Client', () => {
 
         it('should call delete endpoint', async () => {
             const id = 123;
-            fetch.mockResolvedValueOnce(successJsonResponse(undefined, 204));
+            fetch.mockResponseOnce(successJsonResponse(undefined, 204));
 
             const prezlySdk = createClient({
                 accessToken: ACCESS_TOKEN,
@@ -169,7 +186,7 @@ describe('Client', () => {
 
     describe('custom options', () => {
         it('should allow overriding the url', async () => {
-            fetch.mockResolvedValueOnce(successJsonResponse({}));
+            fetch.mockResponseOnce(successJsonResponse({}));
 
             // Intentionally using trailing `/` to test url sanitizing.
             const baseUrl = 'https://api.prezly.test/';
@@ -186,7 +203,7 @@ describe('Client', () => {
         });
 
         it('should allow overriding the headers', async () => {
-            fetch.mockResolvedValueOnce(successJsonResponse({}));
+            fetch.mockResponseOnce(successJsonResponse({}));
 
             const customHeaders = {
                 'User-Agent': 'Test',