If you have
```js
a = b
```
we used to do
```js
group[a = b]
```
which works most of the time but has the unfortunate side effect that if the left part breaks, we're going to break the `=` as well. So you get
```js
{
a
} = \n
b
```
What this PR does it to add a group
```js
group[a group[= b]]
```
so that if the right hand side fits in one line, it should stay that way.
Note that there's a change with a comment being move but I think that it's fine. If I remember correctly, this test was to make sure that we didn't print invalid code, not that it had to be respected (that comment position is not something we really want to support in the first place).
Fixes#4645
* 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
* Verify parsers against same snapshot
- Reworked run_spec, now accepts 3th optional array argument for
additional parsers to verify against
- Merged duplicate run_spec configs
- Removed duplicate snapshot data
* Formatted run_spec.js with prettier
* Fixed node4 incompatibility
* Revert "Remove mutation in `printBinaryishExpressions` (#1067)"
This reverts commit e7312ad7b2.
* Revert "Make it clear what parser was used in each snapshot (#1068)"
This reverts commit 4f7ae4815b.
Printing the first line of a binary expression next to the `=` leads to weird cases where the first expression is parenthesised and doens't read well with chained conditionals as they don't align well. This makes it behave the same was as `if` tests.
Fixes#863
* WIP immediate feedback
* typescript parser is drop-in replacement for flow parser
* Add new TypeScript Parser snapshots where drop-in replacement possible
* Snapshot updates after rebasing
* Remove unnecessary stripping of properties on TypeScript parser AST
* Remove annotated issues
* Move TS dependencies to dev for now
Georgii Dolzhykov