Description

In https://github.com/Orange-OpenSource/ods-charts/pull/107/files#diff-7550ed8e96cefb56f155fd7d28958f936ff45aa4c689fab605c009c7477b48a1, we've introduced a new algorithm to override the tooltip.confine: true configuration.

However, this implementation was done in pure JavaScript, and not in TypeScript.

The idea of this issue is to refactor a little bit the code to:

• Add the correct types in the position: (...) => fallback
• Rename correctly the intermediate variables in this function (e.g. no more obj and tmp)