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Comment by niggler | Hacker News Reader

You can just parse (new Error).stack:

    var __LINE__ = (new Error).stack.split("\n")[1].match(/:([0-9]+):/)[1];

I do something similar for logging my node apps... in .Net I use reflection for essentially the same.

`(new Error()).stack` is non-standard. But that’s a nice hack, nevertheless.

The underlying construct (console.log processing "%c" and styles) is nonstandard to begin with.

Yes. It will not break, though.

Unless you’re running it on an old IE that doesn’t host the `window.console` object.