TypeScript Agency

The budget depends on the complexity of the data handled and the number of screens to cover, not on the language used to write them: TypeScript adds no licence cost, only a slightly deeper scoping of the data structure at the outset. We list with you the types of content to manage and the exchanges expected with your existing tools before pricing anything at all. Every project is then priced on quotation, sent within 24 hours of that first scoping. This scoping avoids nasty surprises once development has started.

A simple interface, with a limited number of screens and data types, is developed in 21 to 30 days once scoping is complete. A broader platform, with several user profiles and continuous exchanges with a back end, calls for closer to 21 to 60 days, and up to 60 days for a scope extended to several interdependent modules. The time spent defining the types up front then reduces the correction round trips at the end of the project. Last-minute touch-ups remain rare thanks to this work done up front.

Classic JavaScript suits an isolated script or a prototype with no follow-up planned, where the typing effort adds a constraint with no immediate benefit. As soon as a project has to live for several years, change hands between developers or handle somewhat complex data, TypeScript markedly reduces the number of errors discovered in production. We choose one or the other according to the expected lifespan of the project, never out of team habit. A prototype started in JavaScript can in fact migrate to TypeScript if the project grows.

Yes, we regularly convert a JavaScript project to TypeScript, often file by file rather than in a single risky switchover. The initial audit identifies the most fragile areas of the code, where the absence of typing has already caused errors in production, so as to deal with them first. This progressive conversion makes it possible to keep delivering new functions while the typing advances in parallel, without freezing the project for the duration of the complete migration. This conversion remains free to assess before any commitment on your side.

Yes, in the form of an optional annual package, whose content depends on the actual scope of your platform: dependency updates, reported fixes and small developments requested as use goes on. A well-typed TypeScript project makes this follow-up easier, because a change to the code triggers an immediate alert if it breaks another part of the system. This package is never imposed: the code belongs to you from delivery onwards, whatever you choose afterwards. You remain free to give it up each year with no justification to provide.

Yes, without reservation. Code repository, documentation of the types used and hosting access are handed to you from delivery onwards, with no clause tying you to our agency in the long run. For a business platform expected to evolve over several years, this independence matters particularly, since it lets you entrust the rest of the project to another technical team if you wish, without depending on a single developer who alone would know its logic. You can check this point yourself as soon as the project is handed over.

TypeScript is never read directly by search engines: it is turned into JavaScript before reaching the browser. Its effect is indirect but real, in reducing the errors that cause display blockages or slowdowns on a Next.js site, signals Google takes into account in its ranking. Better-typed code also breaks less often during updates, which limits periods of instability visible to your visitors. An unstable site also loses visibility, well before any content problem.