chore: disallow using any as type

Author: nicomiguelino

.eslintrc.cjs

@@ -2,14 +2,35 @@ module.exports = {
   env: {
     node: true,
     es2021: true,
+    jest: true, // Add jest environment for test files
   },
-  extends: ['eslint:recommended'],
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:@typescript-eslint/strict',
+  ],
+  parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
   parserOptions: {
     ecmaVersion: 'latest',
     sourceType: 'module',
+    project: './tsconfig.json',
   },
   rules: {
     'no-console': 'warn',
-    'no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+    'no-unused-vars': 'off', // Turn off base rule as it can report incorrect errors
+    '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+    '@typescript-eslint/no-explicit-any': 'error',
+    '@typescript-eslint/explicit-function-return-type': 'error',
+    '@typescript-eslint/strict-boolean-expressions': 'error',
   },
+  ignorePatterns: [
+    'index.js',
+    'dist/**/*',
+    'coverage/**/*',
+    'test/**/*',
+    '**/*.test.ts',
+    'vitest.config.ts',
+    'vitest.visual.config.ts',
+  ],
 };

package-lock.json

@@ -29,6 +29,8 @@
     "zapier-platform-core": "16.3.0"
   },
   "devDependencies": {
+    "@typescript-eslint/eslint-plugin": "^8.28.0",
+    "@typescript-eslint/parser": "^8.28.0",
     "@vitest/coverage-v8": "^3.0.8",
     "eslint": "^8.57.1",
     "husky": "^9.1.7",