需要修复EsLint错误：e​​xpression-no-extra-parens周围的免费括号

Question

在JavaScript代码上运行ESLint时出现错误。

<?php

namespace App\Command;

use App\Command\Exception\StopCommandException;
use Symfony\Component\Console\Command\LockableTrait;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\HttpKernel\KernelInterface;
use Symfony\Component\Process\Exception\RuntimeException;
use Symfony\Component\Process\PhpExecutableFinder;
use Symfony\Component\Process\Process;
use Webmozart\PathUtil\Path;

class ProcessingRunner extends AbstractCommand
{
    use LockableTrait;
    /**
     * @var Process[]
     */
    private $processes = [];
    /**
     * @var string[]
     */
    private $cmd;
    /**
     * @var KernelInterface
     */
    private $kernel;

    /**
     * @param KernelInterface $kernel
     */
    public function __construct(KernelInterface $kernel)
    {
        parent::__construct();
        $this->kernel = $kernel;
    }

    /**
     * {@inheritdoc}
     * @throws InvalidArgumentException
     */
    protected function configure(): void
    {
        $this
            ->setName('app:processing:runner')
            ->setDescription('Run processing into multiple threads')
            ->addOption('threads', 't', InputOption::VALUE_REQUIRED, 'Number of threads to run at once', 1)
            ->addOption('at-once', 'm', InputOption::VALUE_REQUIRED, 'Amount of items to process at once', 10);
    }

    /**
     * {@inheritdoc}
     * @throws \Symfony\Component\Process\Exception\LogicException
     * @throws InvalidArgumentException
     * @throws RuntimeException
     * @throws \Symfony\Component\DependencyInjection\Exception\InvalidArgumentException
     * @throws \InvalidArgumentException
     * @throws \LogicException
     */
    protected function execute(InputInterface $input, OutputInterface $output): ?int
    {
        if (!$this->lock()) {
            $output->writeln('The command is already running in another process.');
            return 0;
        }
        if (extension_loaded('pcntl')) {
            $stop = function () {
                StopCommandException::throw();
            };
            pcntl_signal(SIGTERM, $stop);
            pcntl_signal(SIGINT, $stop);
            pcntl_async_signals(true);
        }
        do {
            try {
                while (\count($this->processes) < $this->getInput()->getOption('threads')) {
                    $process = $this->createProcess();
                    $process->start();
                    $this->processes[] = $process;
                }
                $this->processes = array_filter($this->processes, function (Process $p) {
                    return $p->isRunning();
                });
                usleep(1000);
            } catch (StopCommandException $e) {
                try {
                    defined('SIGKILL') || define('SIGKILL', 9);
                    array_map(function (Process $p) {
                        $p->signal(SIGKILL);
                    }, $this->processes);
                } catch (\Throwable $e) {

                }
                break;
            }
        } while (true);
        $this->release();
        return 0;
    }

    /**
     * @return Process
     * @throws RuntimeException
     * @throws \Symfony\Component\DependencyInjection\Exception\InvalidArgumentException
     * @throws \InvalidArgumentException
     * @throws \LogicException
     * @throws InvalidArgumentException
     */
    private function createProcess(): Process
    {
        if (!$this->cmd) {
            $phpBinaryPath = (new PhpExecutableFinder())->find();
            $this->cmd = [
                $phpBinaryPath,
                '-f',
                Path::makeAbsolute('bin/console', $this->kernel->getProjectDir()),
                '--',
                'app:processing:worker',
                '-e',
                $this->kernel->getEnvironment(),
                '-m',
                $this->getInput()->getOption('at-once'),
            ];
        }
        return new Process($this->cmd);
    }
}

我遇到错误

  

在表达式中用多余的括号括住

Answer 1

在Visual Studio中：

更改以下行：

"no-extra-parens": 1,

到

"no-extra-parens": 0,

Answer 2

只需删除crslWt/2周围的括号即可。

/运算符takes precedence超过-，因此这种情况下的括号在技术上是多余的

Answer 3

似乎您必须执行选项{ "nestedBinaryExpressions": false }。

来自official documentation：

  

该规则的正确代码示例，其中包含“ all”和{   “ nestedBinaryExpressions”：false}选项：

/* eslint no-extra-parens: ["error", "all", { "nestedBinaryExpressions": false }] */

x = a || (b && c);
x = a + (b * c);
x = (a * b) / c;