WIP feat: add command line utility

.eslintignore

@@ -1,2 +1,3 @@
 node_modules
+dist
 lib/compiled-config.js

.gitignore

@@ -1 +1,2 @@
-node_modules
+node_modules
+dist

bin/linting.js

@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+
+/* eslint-env node */
+
+const fs = require('fs');
+
+const {
+  green,
+  red
+} = require('ansi-colors');
+
+const { Linter } = require('../dist/Linter.js');
+
+const linter = new Linter();
+
+const files = process.argv.filter(arg => arg.endsWith('.bpmn'));
+
+if (files.length === 0) {
+  console.error('No files found');
+
+  process.exit(1);
+}
+
+console.log(`Linting ${files.length} file(s)`);
+
+let errors = 0;
+
+files.forEach((file) => {
+  try {
+    const content = fs.readFileSync(file, 'utf8');
+
+    linter.lint(content).then((results) => {
+      if (!results.length) {
+        console.log(green(file));
+
+        return;
+      }
+
+      errors += results.length;
+
+      console.log(red(file));
+
+      results.forEach((result) => {
+        console.log(red(`\t[${result.id}] ${result.message}`));
+      });
+    });
+
+  } catch (err) {
+    console.error(`Error reading ${file}:`, err);
+  }
+});
+
+process.on('exit', () => {
+  if (errors) {
+    process.exit(1);
+  }
+});