Update Peer Deps

resolve-peer-deps.js

// This script modifies the peerDependencies of conflicting packages directly within node_modules.
// Use Node.js to automate this process by adding "node resolve-peer-deps.js" to your package.json config

const fs = require('fs');
const path = require('path');

const packagesToUpdate = [
  {
    name: '@testing-library/react',
    newPeerDependencies: {
      react: '>=18.0.0 <20.0.0',
      'react-dom': '>=18.0.0 <20.0.0',
    },
  },
  {
    name: 'another-library',
    newPeerDependencies: {
      react: '>=18.0.0 <20.0.0',
    },
  },
];

const resolvePath = (pkgName) => path.resolve('node_modules', pkgName, 'package.json');

const readJson = (filePath) => JSON.parse(fs.readFileSync(filePath, 'utf8'));

const writeJson = (filePath, data) => fs.writeFileSync(filePath, JSON.stringify(data, null, 2));

const updatePeerDeps = ({ name, newPeerDependencies }) => {
  try {
    const packageJsonPath = resolvePath(name);
    if (!fs.existsSync(packageJsonPath)) throw new Error(`Package not found: ${name}`);

    const packageJson = readJson(packageJsonPath);
    packageJson.peerDependencies = { ...packageJson.peerDependencies, ...newPeerDependencies };
    writeJson(packageJsonPath, packageJson);

    console.log(`[Updated] ${name} peerDependencies`);
  } catch (error) {
    console.error(`[Error] ${name}: ${error.message}`);
  }
};

packagesToUpdate.forEach(updatePeerDeps);