extensions/typescript-language-features/src/languageFeatures/fileConfigurationManager.ts/FileConfigurationManager/getAutoImportFileExcludePatternsPreference
class FileConfigurationManager:	private getAutoImportFileExcludePatternsPreference(config: vscode.WorkspaceConfiguration, workspaceFolder: vscode.Uri | undefined): string[] | undefined {
		return workspaceFolder && config.get<string[]>('autoImportFileExcludePatterns')?.map(p => {
			// Normalization rules: https://github.com/microsoft/TypeScript/pull/49578
			const slashNormalized = p.replace(/\\/g, '/');
			const isRelative = /^\.\.?($|\/)/.test(slashNormalized);
			return path.isAbsolute(p) ? p :
				p.startsWith('*') ? '/' + slashNormalized :
					isRelative ? vscode.Uri.joinPath(workspaceFolder, p).fsPath :
						'/**/' + slashNormalized;
		});
	}