Stop converting empty JSX elements to self-closing elements

[duailibe]

Closes #5442

• I’ve added tests to confirm my change works.
• (If changing the API or CLI) I’ve documented the changes I’ve made (in the docs/ directory)
• (If the change is user-facing) I’ve added my changes to the CHANGELOG.unreleased.md file following the template.
• I’ve read the contributing guidelines.

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[sompylasar]

This PR is said to be merged to prettier:master but prettier:master does not contain these commits and this logic. What happened?

[duailibe]

@sompylasar I don't understand

eca23e1

https://github.com/prettier/prettier/blob/master/src/language-js/printer-estree.js#L5530-L5535

[sompylasar]

@duailibe 😮 I don't understand either! I should have uploaded screenshots, it wasn't there when I looked. My brain might have been in some parallel universe or something... I'm very surprised that I missed it somehow. 🤔Maybe I used search that is supposed to find in latest master, maybe its index was not at the latest master, but I also checked the CHANGELOG.md and have not found any mention of this quite significant change in JSX handling, and it's not in CHANGELOG.unreleased.md either. Which version was it released in?

[sompylasar]

OK I think I might have clicked "View file" on the prettier/prettier PR and did not notice that I landed on duailibe/prettier where I replaced the commit hash in the browser address bar with master and landed on duailibe:master which is currently behind prettier:master.

[sompylasar]

Found it, according to https://prettier.io/blog/2019/06/06/1.18.0.html#stop-converting-empty-jsx-elements-to-self-closing-elements-6127-by-duailibe it was released in 1.18.0.

The Stop converting empty JSX elements to self-closing elements changelog entry was added to the website blog but not to the CHANGELOG.md file in the repo.

• https://github.com/prettier/prettier/blob/644b419328fce055d9def7de2cecdb5731968e99/website/blog/2019-06-06-1.18.0.md#stop-converting-empty-jsx-elements-to-self-closing-elements-6127-by-duailibe
• https://github.com/prettier/prettier/blob/644b419328fce055d9def7de2cecdb5731968e99/CHANGELOG.md#1180 the Release Notes is just a link to the blog, that's why I could not find it in the changelog itself when I looked.

[duailibe]

@sompylasar Changelog for minor releases are blog posts

[Alexzanderk]

Holly Molly!!! Why??? How turn on auto-close tag?

[lydell]

@Alexzanderk You can use the react/self-closing-comp ESLint rule to achieve that. It has autofix!