[Language Server] Performance pitfalls of recursively searching for tsconfig.json

[johnsoncodehk]

In the following line, the language server attempts to search for all tsconfigs from the workspace root directory. If the user attempts to start vscode from the system root directory and opens a vue file, this could lead to performance issues for the language server searching through the entire file system for tsconfigs.

volar.js/packages/language-server/src/common/workspace.ts

Line 28 in dacc52d

const rootTsConfigs = new Set(sys?.readDirectory(uriToFileName(context.rootUri.toString()), rootTsConfigNames, undefined, ['**/*']).map(fileName => fileName.replace(/\\/g, '/') as path.PosixPath));

A better approach would be to attempt to search up for the tsconfig for each request.