Is the project abandoned? Why don't devs acknowledge important issues?

[IgorArnaut]

I am struggling to configure the project generated with sequelize-cli to use sqlite instead of MySQL. #1528 (there is no option to select dialect)
There are other issues such as sequelize-cli not generating TypeScript files. #1436 (there is no option for that).
sequelize-cli also generates files in CommonJS syntax instead of ES6 syntax (import x from y, export default, export). #960 (there is no option for that). People had to change the syntax manually.
Last update of sequelize-cli was in 2023.

[WikiRik]

Hi! This version of the CLI is basically abandoned. With the new major release of sequelize, we're rewriting the CLI in our monorepo; https://github.com/sequelize/sequelize/tree/main/packages/cli
We haven't included many features yet, but that's where progress will go.

The current version of the CLI is indeed outdated and therefore does not include ES Module or TypeScript file generation support. That's the first things we've added to the new one as you can see.