jest.resolver.js

module.exports = (path, options) => {
    // Call the defaultResolver, so we leverage its cache, error handling, etc.
    return options.defaultResolver(path, {
        ...options,
        // Use packageFilter to process parsed `package.json` before the resolution (see https://www.npmjs.com/package/resolve#resolveid-opts-cb)
        packageFilter: (pkg) => {
            const pkgNamesToTarget = new Set([
                '@firebase/auth',
                '@firebase/storage',
                '@firebase/functions',
                '@firebase/database',
                '@firebase/auth-compat',
                '@firebase/database-compat',
                '@firebase/app-compat',
                '@firebase/firestore',
                '@firebase/firestore-compat',
                '@firebase/messaging',
                '@firebase/util',
                'firebase',
                'dexie',
            ])

            if (pkgNamesToTarget.has(pkg.name)) {
                // console.log('>>>', pkg.name)
                delete pkg['exports']
                delete pkg['module']
            }

            return pkg
        },
    })
}