feat: Add file utility functions and string utility functions

Author: killerapp

linters/typescript/src/utils/file_utils.ts

@@ -0,0 +1,40 @@
+import * as fs from 'fs/promises';
+import * as path from 'path';
+
+export async function getContextFiles(directoryPath: string): Promise<string[]> {
+  const files = await fs.readdir(directoryPath);
+  return files.filter(file => 
+    file.endsWith('.context.md') || 
+    file.endsWith('.context.yaml') || 
+    file.endsWith('.context.json')
+  );
+}
+
+export async function lintFileIfExists(filePath: string, lintFunction: (content: string) => void): Promise<void> {
+  try {
+    const content = await fs.readFile(filePath, 'utf-8');
+    lintFunction(content);
+  } catch (error) {
+    if (error instanceof Error && 'code' in error && error.code !== 'ENOENT') {
+      console.error(`Error reading file ${filePath}: ${error}`);
+    }
+  }
+}
+
+export async function fileExists(filePath: string): Promise<boolean> {
+  try {
+    await fs.access(filePath);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+export function printHeader(packageVersion: string, directoryPath: string): void {
+  console.log(`
+========================================================
+AI Context Convention Linter (v${packageVersion})
+========================================================
+`);
+  console.log(`Linting directory: ${directoryPath}\n`);
+}

linters/typescript/src/utils/string_utils.ts

@@ -0,0 +1,8 @@
+export function kebabToCamelCase(str: string, cache: Map<string, string>): string {
+  if (cache.has(str)) {
+    return cache.get(str)!;
+  }
+  const result = str.replace(/-([a-z])/g, (g) => g[1].toUpperCase());
+  cache.set(str, result);
+  return result;
+}