If there's a sourcemap for a file, mention the original line that causes the error

[jtomaszewski]

Currently if I run es-check for a bundled/minified filed, it's a bit hard to tell which exact line of code (and which related library/file) causes the error. See screen below.

Instead, we could consume sourcemap (if there's one located in the file or next to it, e.g. a.js and a.js.map) with https://www.npmjs.com/package/source-map#new-sourcemapconsumerrawsourcemap , and then improve the es-check error message, by saying what's the original line that causes the error.

What do you think? Would you be open to such a code contribution?

[yowainwright]

@jtomaszewski I'm open to it! Thanks for this consideration!