Prefer ranking higher the language for which the syntax is syntactically correct

[vfonic]

JSON and JavaScript (and TypeScript) are quite similar. When I paste JSON in an untitled file, many times it gets recognized as JavaScript or TypeScript and shows all the syntax errors, because pure JSON is not syntactically correct JavaScript.
It would be great if editor could detect this somehow (I understand this is complicated to do for every language out there), and try next detected language in the list. In this case, the next language would probably be JSON (let's disregard TypeScript for now). The plugin could then check for syntax errors. If there are none, then it's more likely that the actual untitled document content is JSON, not JavaScript and that should be the language selected instead.