test: migrate test setup from Mocha/Chai to NodeJS built-in

.github/agents/test-developer.agent.md

@@ -1,27 +1,27 @@
 ---
-description: "Write and maintain tests for commands using Mocha patterns."
+description: "Write and maintain tests for commands"
 name: "Test Developer"
 tools: ['execute/testFailure', 'execute/runTests', 'read/terminalLastCommand', 'read/problems', 'read/readFile', 'edit/createFile', 'edit/editFiles', 'search/codebase', 'search/fileSearch', 'search/listDirectory', 'search/searchResults', 'search/textSearch', 'search/usages', 'web', 'todo']
 ---
 
 # Test Developer
 
-Expert assistant for writing tests in this CLI project using Mocha patterns.
+Expert assistant for writing tests in this CLI project using NodeJS test patterns.
 
 ## Project Testing Context
 
-- **Test framework**: Mocha
+- **Test framework**: NodeJS built-in test module
 - **Test location**: `test/commands/{command}.test.ts`
 - **Test assets**: `test/assets/` contains source images for testing
 - **Cleanup**: Tests create temporary directories (`assets/`, `android/`, `ios/`) that must be cleaned in hooks
 
 ## Test Structure Pattern
 
 ```typescript
-import {expect} from 'chai'
-import {afterEach, beforeEach, describe, it} from 'mocha'
+import assert from 'node:assert/strict'
 import * as fs from 'node:fs'
 import * as path from 'node:path'
+import {afterEach, beforeEach, describe, it} from 'node:test'
 
 import {runCommand} from '../helpers/run-command.js'
 
@@ -76,7 +76,7 @@ describe('commandName', () => {
 
 ### Assertion Patterns
 
-- **File existence**: `expect(fs.existsSync(path)).to.be.true`
+- **File existence**: `assert.ok(fs.existsSync(path))`
 - **File content**: Read file and compare expected content
 - **Console output**: Capture `stdout` from `runCommand()` and verify messages
 - **Error handling**: Test with invalid inputs to verify error messages
@@ -95,9 +95,6 @@ When testing image generation commands (icons, splash):
 # Run all tests
 pnpm test
 
-# Run specific test file
-pnpm test test/commands/icons.test.ts
-
 # Run with verbose output
 pnpm test --verbose
 ```

.github/copilot-instructions.md

@@ -52,7 +52,7 @@ src/
 ```bash
 pnpm install          # Install dependencies
 pnpm build            # Compile TypeScript to dist/
-pnpm test             # Run Mocha tests + lint
+pnpm test             # Run Node.js test runner with coverage + lint
 pnpm lint             # ESLint only
 ```
 
@@ -64,6 +64,7 @@ pnpm lint             # ESLint only
 ## Testing & Debugging
 
 - Tests live in `test/commands/{command}.test.ts`
+- Uses Node.js built-in `node:test` runner with `node:assert/strict`
 - Use custom `runCommand()` helper from `test/helpers/run-command.ts`
 - Tests create temporary `assets/`, `android/`, `ios/` directories - cleaned up in `after`/`afterEach` hooks
 - Test assets stored in `test/assets/`

.vscode/launch.json

@@ -8,9 +8,8 @@
       "skipFiles": ["<node_internals>/**"],
       "runtimeExecutable": "node",
       "runtimeArgs": [
-        "--loader",
-        "ts-node/esm",
-        "--no-warnings=ExperimentalWarning"
+        "--import",
+        "tsx"
       ],
       "program": "${workspaceFolder}/bin/dev.js",
       "args": ["dotenv", "dev"]
@@ -22,9 +21,8 @@
       "skipFiles": ["<node_internals>/**"],
       "runtimeExecutable": "node",
       "runtimeArgs": [
-        "--loader",
-        "ts-node/esm",
-        "--no-warnings=ExperimentalWarning"
+        "--import",
+        "tsx"
       ],
       "program": "${workspaceFolder}/bin/dev.js",
       "args": ["icons", "./test/assets/icon.png", "--appName", "TestApp"]
@@ -36,9 +34,8 @@
       "skipFiles": ["<node_internals>/**"],
       "runtimeExecutable": "node",
       "runtimeArgs": [
-        "--loader",
-        "ts-node/esm",
-        "--no-warnings=ExperimentalWarning"
+        "--import",
+        "tsx"
       ],
       "program": "${workspaceFolder}/bin/dev.js",
       "args": ["splash", "./test/assets/splashscreen.png", "--appName", "TestApp"]

AGENTS.md

@@ -14,7 +14,7 @@ This is a **zero-dependencies CLI tool** (`rn-toolbox`) that automates React Nat
 ```bash
 pnpm install          # Install dependencies
 pnpm build            # Compile TypeScript to dist/
-pnpm test             # Run Mocha tests + lint
+pnpm test             # Run Node.js test runner with coverage + lint
 pnpm lint             # ESLint only
 pnpm cleanup          # Remove generated android/, ios/, dist/, .env
 ```
@@ -32,14 +32,16 @@ Use the development entry point during development:
 ## Testing Instructions
 
 - Tests are located in `test/commands/{command}.test.ts`
-- Run `pnpm test` to execute all tests with Mocha
+- Run `pnpm test` to execute all tests with Node.js built-in test runner
+- Uses `node:test` runner with `node:assert/strict` for assertions
+- TypeScript support via `tsx` loader
 - Run `pnpm lint` before committing to ensure ESLint passes
 - Tests create temporary `assets/`, `android/`, `ios/` directories - cleaned up in `after`/`afterEach` hooks
 - Test assets are stored in `test/assets/`
 
 To run a specific test file:
 ```bash
-pnpm mocha --forbid-only "test/commands/icons.test.ts"
+node --import tsx --test test/commands/icons.test.ts
 ```
 
 ## Code Style

bin/dev.cmd

@@ -1,3 +1,3 @@
 @echo off
 
-node --loader ts-node/esm --no-warnings=ExperimentalWarning "%~dp0\dev" %*
+node --import tsx "%~dp0\dev" %*

bin/dev.js

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S node --loader ts-node/esm --disable-warning=ExperimentalWarning
+#!/usr/bin/env -S node --import tsx
 
 import { runCLI } from '../src/cli/runner.js'