const fs = require('fs'); function deleteLineFromFile(props) { const data = fs.readFileSync(props.path, 'utf-8'); const array = data.split('\n'); const value = array[props.lineToRemove.index - 1].trim(); if (value === props.lineToRemove.value) { array.splice(props.lineToRemove.index - 1, 1); const newData = array.join('\n'); fs.writeFileSync(props.path, newData, 'utf-8'); } } deleteLineFromFile({ path: 'node_modules/react-scripts/config/webpack.config.js', lineToRemove: { index: 406, value: 'include: paths.appSrc,' }, });