fix: merge linter packages and update config

Author: ElderMatt

.eslintignore

@@ -0,0 +1,65 @@
+import js from '@eslint/js'
+import importPlugin from 'eslint-plugin-import'
+import prettierPlugin from 'eslint-plugin-prettier'
+import prettierConfig from 'eslint-config-prettier'
+import chaiFriendly from 'eslint-plugin-chai-friendly'
+
+export default [
+  js.configs.recommended,
+  {
+    files: ['**/*.js'],
+    plugins: {
+      import: importPlugin,
+      prettier: prettierPlugin,
+      'chai-friendly': chaiFriendly,
+    },
+    languageOptions: {
+      ecmaVersion: 9,
+      sourceType: 'module',
+      globals: {
+        // Node.js globals
+        process: 'readonly',
+        __dirname: 'readonly',
+        __filename: 'readonly',
+        require: 'readonly',
+        module: 'readonly',
+        exports: 'writable',
+        console: 'readonly',
+        Buffer: 'readonly',
+        
+        // Mocha globals
+        describe: 'readonly',
+        it: 'readonly',
+        before: 'readonly',
+        after: 'readonly',
+        beforeEach: 'readonly',
+        afterEach: 'readonly',
+      },
+    },
+    settings: {
+      'import/resolver': {
+        node: {
+          extensions: ['.js'],
+        },
+      },
+    },
+    rules: {
+      ...prettierConfig.rules,
+      'import/no-extraneous-dependencies': 'off',
+      'eol-last': ['error', 'always'],
+      'import/extensions': 'off',
+      'no-shadow': 0,
+      'no-unused-vars': 0,
+      'prefer-destructuring': 0,
+    },
+  },
+  {
+    ignores: [
+      'node_modules/',
+      'coverage/',
+      'dist/',
+      '.history/',
+      '.vscode/',
+    ],
+  },
+]