* Add formatting for i18n attributes.
Previously, Prettier would largely ignore i18n attributes, not even
wrapping their content, which wasn't ideal since i18n descriptive text
can sometimes get long.
After this, Prettier will auto-wrap the contents of i18n attributes once
they exceed the line length.
Fixes#5875.
* feat: implement --vue-indent-script-and-style mentioned at pr-#6077
* docs: --vue-indent-script-and-style
* update new test case
* feat: playground for --vue-indent-script-and-style
* chores: Revert package.json version
* Remove noisy snapshots
This pull requests adds a new parser option `lwc`. This is the same as the HTML parser, but it adds support for unquoted HTML attributes per the needs of LWC. See: #5627
- whitespace-sensitive formatting
- respect css `display: block`/`white-space: pre` (data from [`html-styles`](https://github.com/marionebl/html-styles))
- support magic comment (`<!-- display: block -->`)
- add an option to specify whitespace sensitivity (`--html-whitespace-sensitivity <css|strict|ignore>`)
- magic comments take precedence
- (default) `css`: respect default css style (safe in the most cases)
- `strict`: every node is considered whitespace sensitive (the safest)
- `ignore`: every node is considered whitespace insensitive (dangerous, the original behavior)
- inline inline-tags
- support ie conditional comment (`<!--[if IE]><![endif]-->`)
- indent the script/style content
- no inconsistent output for 2+ attributes
- force break tag if there're multiline attributes
- switch to [`htmlparser2`](https://github.com/fb55/htmlparser2)
- no need to fork
- won't generate pseudo nodes ([`parse5` will](https://github.com/prettier/prettier/issues/5098#issuecomment-423055181))
- should be [faster](https://github.com/fb55/htmlparser2#performance)
- support custom self-closing tags
- support HTML entities
- remove extra trailing newline for `<template>`
- distinguish empty/empty-string attributes (`<tag x>`/`<tag x="">`)
- rename `--parser parse5` with `--parser html`
- enable `html` since 1.15, which means it's enabled by default if you install the dev version from GitHub after this PR merged.
fisker Cheung