Detecting undef on HTML

[nneto]

I'm no sure where to ask this question (if here or eslint repo, or somewhere else). But I was wondering if is it possible to detect undefined variables and functions in the HTML (in this case exemplified below, highlight bar), in the same way the foo is detected and underlined in the script part.

I just don't know if I'm missing a setting, or if it's a missing feature or even if it's just something that can't be done for not being possible to infer this kind of thing with linting.

[johnsoncodehk]

Since you didn't use lang="ts", you need to enable checkJs in tsconfig.json / jsconfig.json, or just put // @ts-check in script block top.