export async function goVet()

in src/goVet.ts [64:123]
53 lines of code
18 McCabe index (conditional complexity)

export async function goVet(
	fileUri: vscode.Uri | undefined,
	goConfig: vscode.WorkspaceConfiguration,
	vetWorkspace?: boolean
): Promise<ICheckResult[]> {
	epoch++;
	const closureEpoch = epoch;
	if (tokenSource) {
		if (running) {
			tokenSource.cancel();
		}
		tokenSource.dispose();
	}
	tokenSource = new vscode.CancellationTokenSource();

	const currentWorkspace = getWorkspaceFolderPath(fileUri);
	const cwd = vetWorkspace && currentWorkspace ? currentWorkspace : (fileUri && path.dirname(fileUri.fsPath)) ?? '';
	if (!path.isAbsolute(cwd)) {
		return Promise.resolve([]);
	}

	const vetFlags: string[] = goConfig['vetFlags'] || [];
	const vetEnv = toolExecutionEnvironment();
	const args: string[] = [];

	vetFlags.forEach((flag) => {
		if (flag.startsWith('--vettool=') || flag.startsWith('-vettool=')) {
			let vetToolPath = flag.substr(flag.indexOf('=') + 1).trim();
			if (!vetToolPath) {
				return;
			}
			vetToolPath = resolvePath(vetToolPath);
			args.push(`${flag.substr(0, flag.indexOf('=') + 1)}${vetToolPath}`);
			return;
		}
		args.push(flag);
	});

	const goVersion = await getGoVersion();
	const tagsArg = [];
	if (goConfig['buildTags'] && vetFlags.indexOf('-tags') === -1) {
		tagsArg.push('-tags');
		tagsArg.push(goConfig['buildTags']);
	}

	let vetArgs = ['vet', ...args, ...tagsArg, vetWorkspace ? './...' : '.'];
	if (goVersion && goVersion.lt('1.10') && args.length) {
		vetArgs = ['tool', 'vet', ...args, ...tagsArg, '.'];
	}

	outputChannel.appendLine(`Starting "go vet" under the folder ${cwd}`);

	running = true;
	return runTool(vetArgs, cwd, 'warning', true, '', vetEnv, false, tokenSource.token).then((result) => {
		if (closureEpoch === epoch) {
			running = false;
		}
		return result;
	});
}