Refactor flAST to ESM, Refactor Tests to Node's Test Runner

.github/workflows/node.js.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
@@ -27,4 +27,4 @@ jobs:
           node-version: ${{ matrix.node-version }}
           cache: 'npm'
       - run: npm install
-      - run: npm test
+      - run: npm run test:coverage

.husky/pre-commit

@@ -1,4 +1,2 @@
-#!/usr/bin/env sh
-. "$(dirname -- "$0")/_/husky.sh"
-
+npm test
 npx eslint .

README.md

@@ -27,7 +27,7 @@ npm install flast
 ```
 
 ### Clone The Repo
-Requires Node 16 or newer.
+Requires Node 18 or newer.
 ```bash
 git clone [email protected]:PerimeterX/flast.git
 cd flast
@@ -165,7 +165,7 @@ const tree = [
 ### flAST
 
 ```javascript
-const {generateFlatAST, generateCode} = require('flast');
+import {generateFlatAST, generateCode} from 'flast';
 const ast = generateFlatAST(`console.log('flAST')`);
 const reconstructedCode = generateCode(ast[0]); // rebuild from root node
 ```
@@ -197,7 +197,7 @@ const generateCodeDefaultOptions = {
 ### Arborist
 
 ```javascript
-const {generateFlatAST, generateCode, Arborist} = require('flast');
+import {generateFlatAST, generateCode, Arborist} from 'flast';
 const ast = generateFlatAST(`console.log('Hello' + ' ' + 'there!');`);
 const replacements = {
   'Hello': 'General',
@@ -213,8 +213,8 @@ ast.filter(n => n.type === 'Literal' && replacements[n.value]).forEach(n => arbo
 const numberOfChangesMade = arborist.applyChanges();
 console.log(generateCode(arborist.ast[0]));  // console.log('General' + ' ' + 'Kenobi');
 ```
-The Arborist can be called with an extra argument - logFunc - which can be used to log
-inside the arborist. 
+The Arborist can be called with an extra argument - logFunc - which can be used to override the log
+function inside the arborist. 
 
 ## How to Contribute
 To contribute to this project see our [contribution guide](CONTRIBUTING.md)

eslint.config.js

@@ -0,0 +1,43 @@
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [{
+    ignores: ["**/*tmp*/", "**/*tmp*.*", "eslint.config.js", "node_modules/"],
+}, ...compat.extends("eslint:recommended"), {
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+            ...globals.node,
+            ...globals.commonjs,
+        },
+
+        ecmaVersion: "latest",
+        sourceType: "module",
+    },
+
+    rules: {
+        indent: ["error", "tab", {
+            SwitchCase: 1,
+        }],
+
+        "linebreak-style": ["error", "unix"],
+
+        quotes: ["error", "single", {
+            allowTemplateLiterals: true,
+        }],
+
+        semi: ["error", "always"],
+        "no-empty": ["off"],
+    },
+}];