* chore: upgrade Jest
* chore: update snapshots
* chore: lock down babel dependency using invalid syntax
* 2 args to test.skip
* use jest 22 for now
* Revert "2 args to test.skip"
This reverts commit 691fdc3f99e320f2303958f2b503f7b4c93fa455.
* remove snapshot name from matcher
* fix standalone tests skips
* Hande JSX whitespace separately from fbt whitespace
* Extra test cases
* Further tweak to JSX handling
* Possible improvement of single character text
* More tests
* Pull out separator code
* More tests for fbt
* Allow JSX lines to be recombined
* Add test case for `<br />` breaking expression
* Fix issue where JSX whitespace could be dropped
* Newlines were incorrectly being preserved when JSX contained text
* Position JSX whitespace at the end of lines
Currently we place JSX whitespace at the beginning of lines.
* Use `isLiteral` when determining JSX whitespace
This tweaks our JSX formatting to only put a JSX whitespace `{" "}` on a line by itself when it comes before or after a multiline element.
When preceding a text or single line element it appear on the same line as that element.
* Fix unstable JSX output by ensuring we follow `fill` rules.
This changes makes us more strict about ensuring our JSX children follow the alternating content/whitespace format expected by the `fill` primitive.
Previously there were some cases where could get out of sync which would throw out the formatting.
* Simplify whitespace wrangling
# Conflicts:
# src/printer.js
* Add new fill primitive and use it to wrap text in JSX
This adds a new `fill` primitive that can be used to fill lines with as much code as possible before moving to a new line with the same indentation.
It is used here layout JSX children. This gives us nicer wrapping for JSX elements containings lots of text interspersed with tags.
* Quick fix for jsx whitespace regressions
* Fix a couple more bugs
* Tidy up the `fill` algorithm
Attempt to make the algorithm a little more regular, and improve the naming of variables to make it a little easier to understand (I hope!).
* Small tidy up of JSX whitespace declarations
* Remove unnecessary code
It turns out that `children` is only used in the case when the element is printed on a single line, in which case all the types of JSX whitespaces behave the same, so we don't need to special case leading/trailing/solitary whitespace.
* A little more tidy up based on PR feedback
* Fix up tests after rebasing
* Make it explicit that we keep multiple consecutive spaces
* Add an explanatory comment
* Fix broken snapshot in master
* Ignore existing commands when deciding whether content will fit when using fill
* Fix a bug where children would get incorrectly filled onto a line
* Tidy up JSX whitespace names
Ika