add nodejs with typescript

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+insert_final_newline = false
+trim_trailing_whitespace = false
+
+[*.{js,json,ts,mts,yml,yaml}]
+indent_size = 2
+indent_style = space

.eslintignore

@@ -0,0 +1 @@
+/**/*.js

.eslintrc.json

@@ -0,0 +1,27 @@
+{
+  "env": {
+    "browser": false,
+    "es6": true,
+    "node": true
+  },
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "project": "tsconfig.json",
+    "sourceType": "module",
+    "ecmaVersion": 2020
+  },
+  "plugins": ["@typescript-eslint", "jest"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:jest/recommended",
+    "prettier"
+  ],
+  "rules": {
+    // The following rule is enabled only to supplement the inline suppression
+    // examples, and because it is not a recommended rule, you should either
+    // disable it, or understand what it enforces.
+    // https://typescript-eslint.io/rules/explicit-function-return-type/
+    "@typescript-eslint/explicit-function-return-type": "warn"
+  }
+}

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: [jsynowiec]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/workflows/nodejs.yml

@@ -0,0 +1,17 @@
+name: Node.js CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: volta-cli/action@v1
+      - run: npm ci --no-audit
+      - run: npm run lint --if-present
+      - run: npm test
+      - run: npm run build --if-present
+        env:
+          CI: true

.gitignore

@@ -128,3 +128,13 @@ dist
 .yarn/build-state.yml
 .yarn/install-state.gz
 .pnp.*
+
+# VS Code
+.vscode
+!.vscode/tasks.js
+
+# JetBrains IDEs
+.idea/
+
+# Misc
+.DS_Store

.prettierrc

@@ -0,0 +1,12 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all",
+  "overrides": [
+    {
+      "files": ["*.ts", "*.mts"],
+      "options": {
+        "parser": "typescript"
+      }
+    }
+  ]
+}

__tests__/main.test.ts

@@ -0,0 +1,42 @@
+import { Delays, greeter } from '../src/main.js';
+
+describe('greeter function', () => {
+  const name = 'John';
+  let hello: string;
+
+  let timeoutSpy: jest.SpyInstance;
+
+  // Act before assertions
+  beforeAll(async () => {
+    // Read more about fake timers
+    // http://facebook.github.io/jest/docs/en/timer-mocks.html#content
+    // Jest 27 now uses "modern" implementation of fake timers
+    // https://jestjs.io/blog/2021/05/25/jest-27#flipping-defaults
+    // https://github.com/facebook/jest/pull/5171
+    jest.useFakeTimers();
+    timeoutSpy = jest.spyOn(global, 'setTimeout');
+
+    const p: Promise<string> = greeter(name);
+    jest.runOnlyPendingTimers();
+    hello = await p;
+  });
+
+  // Teardown (cleanup) after assertions
+  afterAll(() => {
+    timeoutSpy.mockRestore();
+  });
+
+  // Assert if setTimeout was called properly
+  it('delays the greeting by 2 seconds', () => {
+    expect(setTimeout).toHaveBeenCalledTimes(1);
+    expect(setTimeout).toHaveBeenLastCalledWith(
+      expect.any(Function),
+      Delays.Long,
+    );
+  });
+
+  // Assert greeter result
+  it('greets a user with `Hello, {name}` message', () => {
+    expect(hello).toBe(`Hello, ${name}`);
+  });
+});

jest.config.js

@@ -0,0 +1,18 @@
+export default {
+  testEnvironment: 'node',
+  preset: 'ts-jest/presets/default-esm',
+  transform: {
+    '^.+\\.m?[tj]s?$': ['ts-jest', { useESM: true }],
+  },
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.(m)?js$': '$1',
+  },
+  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.(m)?ts$',
+  coverageDirectory: 'coverage',
+  collectCoverageFrom: [
+    'src/**/*.ts',
+    'src/**/*.mts',
+    '!src/**/*.d.ts',
+    '!src/**/*.d.mts',
+  ],
+};

package.json

@@ -0,0 +1,44 @@
+{
+  "name": "wallet-watch-bot",
+  "version": "0.1.0",
+  "description": "Sends a message to the discord channel when a transaction occurs for a specified Ethereum address",
+  "type": "module",
+  "engines": {
+    "node": ">= 18.12 <19"
+  },
+  "devDependencies": {
+    "@types/jest": "~29.5",
+    "@types/node": "~18",
+    "@typescript-eslint/eslint-plugin": "~6.2",
+    "@typescript-eslint/parser": "~6.2",
+    "eslint": "~8.46",
+    "eslint-config-prettier": "~9.0",
+    "eslint-plugin-jest": "~27.2",
+    "jest": "~29.6",
+    "prettier": "~3.0",
+    "rimraf": "~5.0",
+    "ts-api-utils": "~1.0",
+    "ts-jest": "~29.1",
+    "typescript": "~5.1"
+  },
+  "scripts": {
+    "start": "node build/src/main.js",
+    "clean": "rimraf coverage build tmp",
+    "prebuild": "npm run lint",
+    "build": "tsc -p tsconfig.json",
+    "build:watch": "tsc -w -p tsconfig.json",
+    "build:release": "npm run clean && tsc -p tsconfig.release.json",
+    "lint": "eslint . --ext .ts --ext .mts",
+    "test": "jest --coverage",
+    "prettier": "prettier --config .prettierrc --write .",
+    "test:watch": "jest --watch"
+  },
+  "author": "Jakub Synowiec <jsynowiec@users.noreply.github.com>",
+  "license": "Apache-2.0",
+  "dependencies": {
+    "tslib": "~2.6"
+  },
+  "volta": {
+    "node": "18.12.1"
+  }
+}