We have released v12 of our JavaScript Content Management SDK, contentful-management.js (CMA.js). This update focuses on upgrading the underlying technical foundations to a more modern JavaScript runtime and module system, improving long-term compatibility with current tooling and platforms.

This update will give us the following benefits:

• TypeScript improvements: Better type inference and clearer error messages for developers using CMA.js in TypeScript projects.
• Performance: Potentially faster runtime and leaner bundles in modern build setups, especially when tree-shaking and ESM are enabled.
• Compatibility: Improved support for current Node.js versions and modern build tools (for example, Vite or esbuild), making it easier to integrate CMA.js into contemporary stacks.
• Maintenance & security: Updated and consolidated dependencies so we can rely on actively maintained packages and ship security and bug fixes more reliably.

You can find detailed migration steps and code examples in our CMA.js v12 migration guide, which explains the breaking changes and recommended upgrade path, and common questions in more detail.