Introduction to Best Headless CMS for Next.js - TypeScript Support Comparison

As TypeScript adoption continues to grow in modern web development, developers are increasingly seeking Headless CMS platforms that integrate seamlessly with TypeScript. TypeScript enhances productivity with features like static typing, type inference, and code autocompletion, while reducing errors in development workflows.

When building with Next.js, choosing a CMS with strong TypeScript support and TypeScript resources can significantly streamline development. In this comparison, we analyzed three popular Headless CMS platforms: Strapi, Contentful, and Flotiq. We examined their strengths and limitations, focusing on developer experience, integration complexity, and maintenance concerns. For each of these solutions - we looked through the official documentation and available tutorials and examples, to find out how to make it work with Typescript.

Let’s dive into the details!

Strapi

Strapi is a popular open-source Headless CMS known for its flexibility and self-hosting capabilities. It provides a REST API and optional GraphQL support, making it a versatile choice for developers.

Content Types Setup in Strapi

First you need to create Content-Types which you plan to use:

Once you define the data model, content editors can immediately start their content management work using the generated forms (this is true only for the Strapi Cloud version). If self-hosting, additional steps are required: you must deploy Strapi to a publicly accessible server and configure appropriate access permissions for editors to interact with the system. This means you need to have devops/dbaAdmin engineers available in your organisation.

The development team gets access to the generated REST API, which reflects the data model. Specific endpoints allow access to different types of data, which is natural for developers with experience in RESTful APIs:

curl localhost:1337/api/products -H "Authorization:bearer $STRAPI\_TOKEN"

This request queries the products API for all objects and produces a response similar to this:

{
  "data": \[
    {
      "id": 1,
      "attributes": {
        "Name": "Test",
        "enabled": true,
        "createdAt": "2023-12-08T08:26:17.828Z",
        "updatedAt": "2025-01-06T18:58:33.421Z",
        "publishedAt": "2025-01-06T18:58:33.420Z",
        "locale": "en",
        "description": null,
        "price": null
      }
    }
  \],
  "meta": {
    "pagination": {
      "page": 1,
      "pageSize": 25,
      "pageCount": 1,
      "total": 1
    }
  }
}

Typescript support in Strapi

The standard way of accessing the Strapi API in a Typescript project, as shown in Strapi tutorials (see links [1], [2], [3], [4], [5]), requires manual setup of interfaces for the IDE to understand the data model, so you can utilize the advantages offered by Typescript:

  1. Build a blog with Next (React.js) and Strapi
  2. Getting Started With Next.js and Strapi 5: beginner's guide
  3. Build a Developer Blog with Strapi 5 and Next.js
  4. How to build a To-do App using Next.js and Strapi
  5. Improve Your Frontend Experience With Strapi Types And TypeScript

Once you define these interfaces, the IDE will start suggesting proper attributes and Typescript will verify type correctness:

Unfortunately, hand-crafting these interfaces is error-prone, tedious, and not suited for long-term maintenance as any change in the data model will have to be manually adjusted in the interfaces.

For those with direct access to the Strapi backend project, you can access type definitions generated by Strapi. Deep down in the file, you can find interfaces for all content types. You can import these files into the client/frontend project, but there are some caveats:

  • The file might need tidying up as it contains many interfaces that will not be used (for internal Strapi types).
  • When you copy the file into the frontend, it will get out of sync with the data model once changes are made to the content type structure.
  • Typescript interfaces are generated in development mode, so someone working on the Strapi backend side of things has to generate them and pass them to you. While this may be a problem in larger, enterprise projects, it's likely not an issue in smaller builds.

With that, you can finally utilize Typescript in the client application:

Note how the IDE autocompletes the property names available in the Product content type.

Unfortunately, some additional concerns arise:

  • The Product content type definition is exported with a rather odd name - ApiProductProduct.
  • With the default setup, the IDE might not be able to properly interpret the types on all attributes (in the screenshot above, the description field is interpreted as any, which is a sort of failover for missing type definition in Typescript).

Conclusions

  • Most tutorials and code samples for Strapi do not make full use of Typescript or require manual crafting of interfaces. Creating interfaces by hand is not acceptable for professional projects built with long-term support in mind, but it may be fine for small, pet projects under full control.
  • If you can copy generated type definitions from the Strapi backend to client applications, it provides a simple way to get (limited) benefits of Typescript in the client app.
  • Manual synchronization of type definitions from the backend will be required whenever a change is made in the data model. This may require a complicated human-based process or automation that may also create problems.
  • Type definitions imported in a client app may not provide full support for typing on all object properties, and you have to accept that the *.d.ts files will contain definitions for Strapi internals, as well as the fact that type names may not be very friendly (the ApiProductProduct case).

One more thing: What if you do not have access to the generated type definitions files?

This can easily happen when the project is in maintenance mode and updates are needed without access to the development team. It's also common in large enterprise builds, where separate teams are responsible for maintaining the CMS backend and building client frontend applications.

The Strapi community understands this problem and has come up with solutions based on either OpenAPI or GraphQL (both carry type information), but these solutions are not exactly out-of-the-box or trivial to use.

The OpenAPI approach has been thoroughly described on the Strapi Blog and, although quite complex, it offers a good and standards-based solution to the problem.

However, the GraphQL-based setup (which should be simpler) is only referenced in a Strapi forum thread from 2021:

But since the dotansimha/graphql-code-generator library is hugely popular, this approach is likely to be successful.

Contentful

Contentful is a cloud-hosted Headless CMS, known for its intuitive content editor interface and robust API options (GraphQL and REST).

Content Type Setup in Contentful

In order to compare with Strapi and Flotiq - we start with the same content-type built in Contentful:

Once you define the model, content editors get a graphical interface to enter content:

Developers have access to generic Contentful GraphQL and REST APIs, like this:

It's easy to see that the API described in Contentful docs is not very friendly to use. Strapi and Flotiq have an easier way of accessing content, where API endpoints reflect the content types which are created in your account.

Typescript support in Contentful

Contentful publishes an interesting blog post, highest ranking for "contentful nextjs typescript", How to use TypeScript in your Next.js project. Unfortunately, the post seems mainly SEO-oriented and only briefly mentions how Typescript, Contentful, and Next.js can improve developer experience:

Not very useful.

The official Contentful + next.js starter does not seem to provide any support for Typescript on the content management side of things, either. Furthermore, it uses hardcoded GraphQL queries and content models to fetch the data:

Author Of article : Paweł Panowicz Read full article