Typescript support

[AugustinMauroy]

Prerequisites

• [X] I have written a descriptive issue title
• [X] I have searched existing issues to ensure the feature has not already been requested

🚀 Feature Proposal

I propose to implement typescript in the project.

Motivation

It's better for security.

Ref:

https://docusaurus.io/docs/typescript-support

[Eomm]

Whenever the majority of the maintainers of this repo will ask for it, we can do it.

Till then: I'm not keen to migrate this repo to TS nor to review a PR I maintain it in my free time, and I'm already out of my comfort zone here