diff --git a/compiler/cli.ts b/compiler/cli.ts
new file mode 100644
index 0000000..c69f5e4
--- /dev/null
+++ b/compiler/cli.ts
@@ -0,0 +1,137 @@
+// Import necessary libraries/modules
+import * as fs from 'fs';
+import * as path from 'path';
+import * as glob from 'glob';
+import * as chokidar from 'chokidar';
+
+// Import necessary modules for transform function
+import { CoqCPASTTransformer, CoqCPAST, PrimitiveType, Location } from './parse';
+import { validateAST } from './validateAST';
+import { coqCodegen } from './coqCodegen';
+import { cppCodegen } from './cppCodegen';
+
+// Define transform function
+function transform(fileContent: string, cppOutputPath: string, coqOutputPath: string) {
+  const transformer = new CoqCPASTTransformer(fileContent);
+  let ast: CoqCPAST | undefined;
+  try {
+    ast = transformer.transform();
+  } catch (error) {
+    // Print error here
+    console.error(`Error transforming file: ${error.message}`);
+  }
+  if (ast === undefined) return;
+
+  const errors = validateAST(ast);
+
+  // Print errors in a user-friendly format
+  if (errors.length !== 0) {
+    console.error('Validation Errors:');
+    errors.forEach((error) => {
+      switch (error.type) {
+        case 'binary expression expects numeric':
+        case 'instruction expects numeric':
+        case 'binary expression expects boolean':
+        case 'binary expression type mismatch':
+        case 'instruction type mismatch':
+        case 'variable type mismatch':
+          console.error(`${error.type} at ${JSON.stringify(error.location)}`);
+          console.error(`Actual Types: ${error.actualType1}, ${error.actualType2}`);
+          break;
+        case 'expression no statement':
+        case 'procedure not found':
+        case 'variable not present':
+        case 'condition must be boolean':
+        case 'no surrounding range command':
+        case 'undefined variable':
+        case 'undefined binder':
+        case 'not representable int64':
+        case 'bad number literal':
+        case 'range end must be int64':
+        case 'instruction expects int8':
+        case 'instruction expects int64':
+        case 'instruction expects tuple':
+        case 'undefined array':
+        case 'index out of bounds':
+        case 'unary operator expects numeric':
+        case "unary operator can't operate on tuples":
+        case 'unary operator expects boolean':
+        case "array length can't be negative":
+          console.error(`${error.type} at ${JSON.stringify(error.location)}`);
+          break;
+        default:
+          console.error(`Unknown error type: ${error.type}`);
+      }
+    });
+    return;
+  }
+
+  const coqCode = coqCodegen(ast);
+  fs.writeFileSync(coqOutputPath, coqCode);
+
+  const cppCode = cppCodegen(ast);
+  fs.writeFileSync(cppOutputPath, cppCode);
+
+  console.log(`Transformation completed for ${cppOutputPath} and ${coqOutputPath}`);
+}
+
+// Define CLI options using a library like yargs
+const yargs = require('yargs');
+const argv = yargs
+  .option('input', {
+    alias: 'i',
+    description: 'Input files glob pattern',
+    demandOption: true,
+    type: 'string',
+  })
+  .option('coqOutput', {
+    alias: 'co',
+    description: 'Coq output directory',
+    demandOption: true,
+    type: 'string',
+  })
+  .option('cppOutput', {
+    alias: 'cp',
+    description: 'C++ output directory',
+    demandOption: true,
+    type: 'string',
+  })
+  .option('watch', {
+    alias: 'w',
+    description: 'Watch mode',
+    type: 'boolean',
+  }).argv;
+
+// Function to process files based on the provided glob pattern
+function processFiles(globPattern: string) {
+  glob(globPattern, {}, (err: any, files: string[]) => {
+    if (err) throw err;
+
+    files.forEach((file) => transformFile(file));
+  });
+}
+
+// Define the transform function for a file
+function transformFile(filePath: string) {
+  const fileContent = fs.readFileSync(filePath, 'utf8');
+  const fileName = path.basename(filePath, path.extname(filePath));
+
+  // Assuming coq and cpp output files have the same name
+  const coqOutputPath = path.join(argv.coqOutput, `${fileName}.v`);
+  const cppOutputPath = path.join(argv.cppOutput, `${fileName}.cpp`);
+
+  transform(fileContent, cppOutputPath, coqOutputPath);
+}
+
+// Initial processing of files
+processFiles(argv.input);
+
+// Watch mode using chokidar
+if (argv.watch) {
+  const watcher = chokidar.watch(argv.input, { ignoreInitial: true });
+
+  watcher.on('all', (event: any, filePath: string) => {
+    console.log(`File ${filePath} has been ${event}`);
+    transformFile(filePath);
+  });
+}