Add optional JSX-Support while keeping original behaviour the default

[allesklarbeidir]

Esquery is a great module which I love to use. However, unfortunately one was not able to use it with code which includes JSX-Expressions because the "normal" estraverse module is used. Luckily there already exists an estraverse-fb module which adds JSX-Support to the estraverse module in a "plug-in" way.

With this pull-request we can integrate the option to use "estravese-fb" instead of pure "estraverse" and enable querying of JSX-containing code. The default behaviour remains as it was without this modification. The readme is also updated to reflect the new option for JSX-Support.

[allesklarbeidir]

I'd propose to merge this pull request before any other modification is made to the repository so that jsx support is preserved for future versions.

[jorgerro]

+1 It would be great to have this support so we can query ASTs generated with esprima from sources containing JSX.

[thabti]

Thank for raising this PR.

Would be great to get this merged in. I have forked the repo and published it NPM with jsx support:

[email protected]