<!-- style comments not recognized when parsing JSX

Evidently <!-- ... single-line comments are valid in JavaScript. eslint doesn’t seem to recognize this.

Source: https://twitter.com/bterlson/status/768211703314067457 and http://www.ecma-international.org/ecma-262/7.0/index.html#prod-annexB-SingleLineHTMLOpenComment

[mysticatea]

I opened the issue: https://github.com/RReverser/acorn-jsx/issues/41

[mysticatea]

I got a fact that HTML comments trigger a syntax error if it’s using JSX option. I reopen this issue.

$ echo "<!--" | eslint --stdin --no-eslintrc

no errors

$ echo "<!--" | eslint --stdin --no-eslintrc --parser-options "ecmaFeatures:{jsx:true}"

<text>
  1:2  error  Parsing error: Unexpected token !

✖ 1 problem (1 error, 0 warnings)