.lintstagedrc.js

const path = require('path');
const { ESLint } = require('eslint');

const buildEslintCommand = (filenames) =>
  `next lint --fix --file ${filenames
    .map((f) => path.relative(process.cwd(), f))
    .join(' --file ')}`;

const removeIgnoredFiles = async (files) => {
  const eslint = new ESLint();
  const isIgnored = await Promise.all(
    files.map((file) => {
      return eslint.isPathIgnored(file);
    }),
  );
  const filteredFiles = files.filter((_, i) => !isIgnored[i]);
  return filteredFiles.join(' ');
};

const buildCommand = (command) => async (filenames) => {
  const filteredFiles = await removeIgnoredFiles(filenames);
  return `${command} ${filteredFiles}`;
};

module.exports = {
  '*.{js,jsx,ts,tsx}': [buildEslintCommand, buildCommand('pnpm stylelint')],
  '*.{js,jsx,ts,tsx,css,scss}': buildCommand('pnpm stylelint'),
  '*.{css,scss,js,jsx,ts,tsx,json,md}': buildCommand('pnpm format'),
};