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TypeError: createClient is not a function in Sanity TypeScript code

46 replies
Last updated: Nov 29, 2025
Hello All... new to Sanity and Typescript so there is probably an obvious answer, but I'm getting this error: TypeError: Object(...) is not a function using this codeimport { createClient } from '
user E
/client'import type { ClientConfig } from '
user E
/client';
export async function *getIgnoredHandles*() {
const config:
ClientConfig = { projectId: 'project id',
dataset: 'production',
useCdn: false,
// set to 
true
to fetch from edge cache apiVersion: '2023-03-03',
// use current date (YYYY-MM-DD) to target the latest API version }

const client = *createClient*(config);
const response = await client.*fetch*('*[_type == "ignoredHandles"]');

const ignoredHandles: *IgnoredHandle*[] = response.*map*((handle: any) => ({
id: handle.id,
handle: handle.handle,
datereview: handle.datereview
}));

return ignoredHandles;

}

export interface
IgnoredHandle { id: string;
handle: string;
datereview: string;
}
AI Update

Based on the community discussion you've linked to, this error typically occurs due to a version compatibility issue between @sanity/client and your Sanity Studio version.

The Problem:

You're using @sanity/client v5.2.2 with @sanity/core v2.35.6 (which indicates you're on Sanity Studio v2). The issue is that @sanity/client v5+ no longer supports ES5, which can cause problems when working with a v2 Studio.

The Solution:

You have two options:

Option 1: Downgrade to @sanity/client v4 (Quick Fix)

  1. Delete your node_modules folder and lock file
  2. Edit your package.json and change the dependency to:
    "@sanity/client": "^4"
  3. Run npm install (or yarn)

Option 2: Upgrade to Sanity Studio v3 (Recommended)

This is the better long-term solution. Sanity Studio v3 is the current version and works seamlessly with @sanity/client v5+. You can follow the migration guide to upgrade your Studio.

Additional Notes:

  • Your import syntax is correct for v5+: import { createClient } from '@sanity/client'
  • If you get an error with import {createClient, type ClientConfig}, you can use separate imports instead:
    import { createClient } from '@sanity/client'
import type { ClientConfig } from '@sanity/client'
  • Update your apiVersion to a more recent date (like '2024-01-01' or the current date in YYYY-MM-DD format)

The community members who helped solve this were able to identify the version mismatch as the root cause, and upgrading to Studio v3 resolved the issue completely.

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