NextJS, Sequelize & Typescript

[Fred638]

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How can one configure a NextJS project using Sequelize to automatically create Typescript files, i.e. for models?

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[healer0805]

Sequelize doesn't generate TypeScript models automatically out of the box, but there are a couple of well-established ways to handle this cleanly.

A common approach is to use "sequelize-typescript", where you define your models as TypeScript classes with decorators. This gives you typed models from day one and fits nicely into a Next.js codebase.
Another option is to generate models from an existing database using tools like "sequelize-auto", which can output TypeScript files. This is usually run as a one-off or as part of a dev/CI script, and the generated files are then maintained alongside your migrations.
In most setups, this generation step lives outside the app runtime. You generate or update models during development, commit them, and use them in the Next.js project rather than recreating them on every build.

Both approaches work well; the choice mostly depends on whether you prefer code-first (sequelize-typescript) or database-first (sequelize-auto) workflows.