[FlorianRappl]

I can believe how popular TS is and it is super useful. I would not write a React application of any noticeable size without TS (and just FYI I would never willingly write an Angular app). The reason that I get far superior code completion and meaningful warnings / errors is sufficient to add a few annotations here and there.

Many people are doing TS wrong. They add types everywhere. Honestly, you should write as many types as necessary, but not more. Use type inference which works remarkably well.

[h1d]

At least add them on function return types and annotate types on common objects so that you don't have objects lingering with wrong property name/type or redundant properties that would be confusing to review.

It helps to create a type reference for your database schema, so you don't try to insert something weird or insert with missing columns.