extensions/typescript-language-features/src/tsServer/logDirectoryProvider.electron.ts/NodeLogDirectoryProvider/getNewLogDirectory
class NodeLogDirectoryProvider:	public getNewLogDirectory(): string | undefined {
		const root = this.logDirectory();
		if (root) {
			try {
				return fs.mkdtempSync(path.join(root, `tsserver-log-`));
			} catch (e) {
				return undefined;
			}
		}
		return undefined;
	}