Escape JSON path for definitions

[jemerald]

Description

Escape JSON path for definitions when resolving auto-suggest and when performing validation.

Extracted the escapeJsonPointerToken and unescapeJsonPointerToken functions to separate file.

Also added cross-env dev dependency to allow running the test under windows.

Motivation and Context

Fixes #1644 and Fixes #1645

How Has This Been Tested?

Manually tested auto-completion in Chrome.

Added unit test for validation.

Screenshots (if appropriate):

Checklist

My PR contains...

• No code changes (src/ is unmodified: changes to documentation, CI, metadata, etc.)
• Dependency changes (any modification to dependencies in package.json)
• Bug fixes (non-breaking change which fixes an issue)
• Improvements (misc. changes to existing features)
• Features (non-breaking change which adds functionality)

My changes...

• are breaking changes to a public API (config options, System API, major UI change, etc).
• are breaking changes to a private API (Redux, component props, utility functions, etc.).
• are breaking changes to a developer API (npm script behavior changes, new dev system dependencies, etc).
• are not breaking changes.

Documentation

• My changes do not require a change to the project documentation.
• My changes require a change to the project documentation.
• If yes to above: I have updated the documentation accordingly.

Automated tests

• My changes can not or do not need to be tested.
• My changes can and should be tested by unit and/or integration tests.
• If yes to above: I have added tests to cover my changes.
• If yes to above: I have taken care to cover edge cases in my tests.
• All new and existing tests passed.

[jemerald]

@shockey Is this the preferred way for sharing code? Or should it go through the magic plugin system?

[shockey]

This seems fine to me - the plugin system is great for exposing code that someone else may want to override/customize, but I can't imagine someone wanting to write a custom JSON Pointer escaper 😄

[shockey]

LGTM!

[shockey]

thanks, @jemerald!