Bug: @genkit-ai/core v1.7.0 does not export defineConfig, and default genkit() import is not callable in Firebase Hosting build

[drnirdoc]

I'm trying to integrate Genkit into a Next.js 14 app deployed via Firebase Hosting. I followed official Genkit examples and attempted both:

ts
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import { defineConfig } from '@genkit-ai/core';
and

ts
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import genkit from '@genkit-ai/core';
Both approaches fail during Firebase Hosting builds.

Using defineConfig throws:

nginx
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Module '"@genkit-ai/core"' has no exported member 'defineConfig'
Using the default import genkit() throws:

vbnet
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TypeError: genkit is not a function
To reproduce

npx create-next-app

Install:

bash
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npm install @genkit-ai/core @genkit-ai/googleai zod
Add basic ai-instance.ts with either defineConfig() or genkit() usage.

Deploy to Firebase Hosting (or test with Cloud Build locally).

Build fails with the error above.

Expected behavior

Documentation suggests defineConfig() should be available, or that genkit() is callable. Neither work under @genkit-ai/core@1.7.0.

Environment

@genkit-ai/core: 1.7.0

@genkit-ai/googleai: latest

zod: latest

Next.js: 14.2.5

Node: v20 (Firebase build env)

Firebase Hosting + Cloud Build

Additional context

Reproduced the issue in a clean minimal test app

Seems like either the export is missing, or incompatible with ESM + Next.js build handling

Please advise on:

The correct import and usage in v1.7.0

Whether ESM-only environments like Next.js on Firebase Hosting are currently supported