Use setTimeout instead of setImmediate

[edi9999]

Reasons for making this change

At one place in the library code, we use setImmediate.
However this function is not standard :

This method is not expected to become standard, and is only implemented by recent builds of Internet Explorer and Node.js 0.10+. It meets resistance both from Gecko (Firefox) and Webkit (Google/Apple).
Source

Since it is not standard, the setImmediate is transformed by babel to : var _setImmediate2 = _interopRequireDefault(require("@babel/runtime-corejs2/core-js/set-immediate")); which adds a lot of unneeded code to the build.

In my application tests, we use react-json-schema-form and are mocking the time with lolex, however, this "polyfil" by babel seems to not react to lolex.

setTimeout(function, 0) has the same behavior, it brakes no tests.

It would be great to release a patch version with those changes :-)

Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests
  • I've updated docs if needed
• I'm adding a new feature
  • I've updated the playground with an example use of the feature

[edi9999]

@glasserc please let me know if you have any comments.

[epicfaace]

Looks good. I think for v2 we should remove setImmediate entirely (#1197), but it sounds good to add this for the patch version.

[edi9999]

Hello @epicfaace , can you publish a patch version (1.8.1) which contains this fix ? It would be helpful for me :-)

[edi9999]

up also @glasserc

[edi9999]

up also @glasserc