module.exports = { webpack(config) { if (process.env.NEXT_RSPACK) { // Disable persistent cache when using Rspack. // Rspack may reuse previously compiled pages from its persistent cache. // In development, webpack typically compiles only the page being requested. // Keeping Rspack's persistent cache enabled can cause tests to surface errors // from previously compiled pages, making it hard to assert errors for the // currently requested page only. config.cache = false } return config }, }