chore(setup): added and configured jest in place of mocha

.eslintrc

@@ -1,19 +1,17 @@
 {
   "root": true,
-  "plugins": ["@typescript-eslint", "mocha", "prettier", "header"],
+  "plugins": ["@typescript-eslint", "jest", "prettier", "header"],
   "extends": [
     "eslint:recommended",
     "plugin:@typescript-eslint/eslint-recommended",
     "plugin:@typescript-eslint/recommended",
-    "plugin:mocha/recommended",
     "plugin:prettier/recommended"
   ],
   "parser": "@typescript-eslint/parser",
   "parserOptions": {
     "project": "./tsconfig.json"
   },
   "rules": {
-    "mocha/no-mocha-arrows": "off",
     "header/header": ["error", "resources/license.header.js"],
     "@typescript-eslint/consistent-type-imports": "off",
     "@typescript-eslint/strict-boolean-expressions": [

CODEOWNERS

@@ -0,0 +1 @@
+* @ar-io/core-team

jest.config.js

@@ -0,0 +1,13 @@
+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ['ts', 'js', 'mjs'],
+  setupFilesAfterEnv: ['./tests/mocks.jest.ts'],
+  testMatch: ['**/src/**/*.test.ts', '**/tests/**/*.test.ts'],
+  collectCoverage: true,
+  collectCoverageFrom: ['src/**/*.ts', 'tests/**/*.ts'],
+  testEnvironment: 'node',
+  testTimeout: 5000,
+  transform: {
+    '^.+\\.(ts|js)$': 'ts-jest',
+  },
+};

package.json

@@ -56,7 +56,9 @@
     "example:cjs": "yarn build:esm && node examples/node/index.mjs",
     "example:web": "yarn build:web && cp -r bundles/* examples/web && http-server --port 8080 --host -o examples/web"
   },
-  "dependencies": {},
+  "dependencies": {
+    "jest": "^29.7.0"
+  },
   "devDependencies": {
     "@commitlint/cli": "^17.1.2",
     "@commitlint/config-conventional": "^17.1.0",

tests/client.test.ts

@@ -1,5 +1,3 @@
-import { expect } from 'chai';
-
 import { DefaultClient } from '../src/index.js';
 
 describe('DefaultClient', () => {

tsconfig.json

@@ -9,7 +9,7 @@
     "moduleResolution": "nodenext",
     "module": "nodenext",
     "alwaysStrict": true,
-    "types": ["node", "mocha"],
+    "types": ["node", "jest"],
     "forceConsistentCasingInFileNames": true,
     "esModuleInterop": true,
     "resolveJsonModule": true,