Refactor out file helpers into fs.ts

src/services/tree-sitter/index.ts

@@ -2,14 +2,12 @@ import * as fs from "fs/promises"
 import * as path from "path"
 import { listFiles } from "../glob/list-files"
 import { LanguageParser, loadRequiredLanguageParsers } from "./languageParser"
+import { fileExistsAtPath } from "../../utils/fs"
 
 // TODO: implement caching behavior to avoid having to keep analyzing project for new tasks.
 export async function parseSourceCodeForDefinitionsTopLevel(dirPath: string): Promise<string> {
 	// check if the path exists
-	const dirExists = await fs
-		.access(path.resolve(dirPath))
-		.then(() => true)
-		.catch(() => false)
+	const dirExists = await fileExistsAtPath(path.resolve(dirPath))
 	if (!dirExists) {
 		return "This directory does not exist or you do not have permission to access it."
 	}