General information

• json-editor version: 2.9.0-beta.0

Background

I've been working on porting some older company-specific tweaks we made to json-editor to the latest version so we can hopefully stop maintaining our own fork. I have a version that addresses the following:

1. Increases performance by deferring rendering of array elements, while still being able to display titles for non-active tabs. This uses an option and must be opted in for now
2. I added a Typescript types file (index.d.ts) for an easier time.
3. Came across a few edge case bugs in my testing which I fixed with null checks and default values
4. Added a flag to translate (default version) so you can choose to fall back to the key or not
5. Changed a spot with JSON.stringify being called twice to reuse first

Notes

• I rewrote several of the utility functions for performance but haven't switched them over. I wanted some review to be sure I'm not introducing different behavior
• I think we should hash and cache the compiled templates but I didn't actually benchmark what that might gain. Easy enough to add though
• We should update to a newer version of eslint (8.29.0) which uses a newer version of globals (v13.15.0). I didn't want to chance different errors/warnings so left it for now and added an exception to the .eslint file

Some of these changes came from an earlier fork by @j2jensen.

Summary

PR is here. Thanks for taking the time to review it. I might be interested in helping out to review other PR's or whatever's needed on the project going forward.