[WIP] Update: add htmlhint

[aladdin-add]

fixes #210

[maxmilton]

Should we provide a .htmlhintrc file with some preset defaults too?

Edit: Just read https://github.com/yaniswang/HTMLHint/wiki/Usage#how-to-use and saw if .htmlhintrc is missing it will use a default set of rules:

{
    "tagname-lowercase": true,
    "attr-lowercase": true,
    "attr-value-double-quotes": true,
    "doctype-first": true,
    "tag-pair": true,
    "spec-char-escape": true,
    "id-unique": true,
    "src-not-empty": true,
    "attr-no-duplication": true,
    "title-require": true
}

Seems reasonable but maybe we should have a comment with a link to that page? Or to: https://github.com/yaniswang/HTMLHint/wiki/Rules

[maxmilton]

Also, should this be an option together with ESLint or should it be a separate option during vue-cli init time? I'm not sure which is better to be honest. Thoughts anyone?

[nickmessing]

@aladdin-add, @maxmilton, I think having a separate option would be better than combining it with eslint since the whole vue ecosystem is non-opinionated and highly configurable, even tho I think nobody will use just one of them.

[nickmessing]

I think this should be wrapped in {{#lint}}...{{/lint}} just like eslint-loader or have another key in meta.js something like htmlLint

[nickmessing]

Same as above comment

[nickmessing]

I think, just like @maxmilton said, there should be .htmlhintrc and it would be nice to add htmllint src/**/*.vue to scripts in package.json I think.

[aladdin-add]

I got an error running npm run dev, after adding this loader.

there are two issues here:

• showing "Failed to compile with 1 errors", it is no much helpful to a user. can we change some config to show more info?
• why this error? I just followed the htmlhint-loader's docs, did I forget something?

[maxmilton]

Looks like there might soon be a solution for the blank error in friendly-errors-webpack-plugin, see this PR: geowarin/friendly-errors-webpack-plugin#52