@kirill.konshin/next

Next.js utilities: AppLink, NoSSR, redirect, SoftLink, useIsInner, measure (main entry) and the base config (/config entry).

defineNextConfig — @kirill.konshin/next/config

Base next.config.ts with recommended defaults: cacheComponents, typedRoutes, experimental.typedEnv, reactStrictMode: false and an exhaustive experimental.optimizePackageImports list (MUI, Toolpad, FontAwesome, Gravity UI, lodash, Hero UI, react-bootstrap, @kirill.konshin/icons — extra entries are ignored by Next.js, missing ones cost dev startup and bundle size).

// next.config.ts
import { defineNextConfig } from '@kirill.konshin/next/config';

export default defineNextConfig(); // just the defaults

Import from /config, not from the main entry: next.config.ts is transpiled to CommonJS and required by Next.js outside any bundler, and the /config module pulls in nothing but Next's own types — the main entry would drag the React components in with it.

The callback receives the defaults and returns the final config — merge explicitly:

export default defineNextConfig((defaults) => ({
    ...defaults,
    transpilePackages: ['@kirill.konshin/react'],
    experimental: {
        ...defaults.experimental,
        optimizePackageImports: [...(defaults.experimental?.optimizePackageImports ?? []), 'my-barrel-lib'],
    },
}));