Feat: Create dedicated JS code generator module

src/generator.js

@@ -0,0 +1,43 @@
+/**
+ * Generates JavaScript code from a Hi AST.
+ * @param {object} ast The Abstract Syntax Tree.
+ * @returns {string} The equivalent JavaScript code.
+ */
+export function generate(ast) {
+    if (!ast) return '';
+    
+    const generators = {
+        Program: (node) => node.body.map(generate).join('\n'),
+        ExpressionStatement: (node) => `${generate(node.expression)};`,
+        VariableDeclaration: (node) => `let ${node.identifier} = ${generate(node.value)};`,
+        Assignment: (node) => `${node.identifier} = ${generate(node.value)};`,
+        
+        CallExpression: (node) => {
+            const callee = generate(node.callee);
+            const args = node.arguments.map(generate).join(', ');
+            if (callee === '_') {
+                return `console.log(${args})`;
+            }
+            return `${callee}(${args})`;
+        },
+        
+        MemberExpression: (node) => `${generate(node.object)}.${generate(node.property)}`,
+        BinaryExpression: (node) => `(${generate(node.left)} ${node.operator} ${generate(node.right)})`,
+        
+        Block: (node) => {
+            if (node.properties.length === 0) return '{}';
+            const properties = node.properties.map(p => `  ${generate(p)}`).join(',\n');
+            return `{\n${properties}\n}`;
+        },
+        Property: (node) => `${node.key}: ${generate(node.value)}`,
+        
+        Identifier: (node) => node.name,
+        NumericLiteral: (node) => node.value,
+        StringLiteral: (node) => node.value,
+    };
+
+    if (!generators[ast.type]) {
+        throw new Error(`Unknown AST node type: ${ast.type}`);
+    }
+    return generators[ast.type](ast);
+}