[reubenmorais]

You're misunderstanding jlongster's point, or putting too much emphasis on the compiler warning part.

When you load some asm.js code in Firefox and it compiles without errors or warnings, you then know for sure your code was fully compiled and you will not see parsing/compilation happening half-way through a game frame. This means it's slightly easier to reason about the performance of your code.

AFAIK, with the Chrome strategy, you have to think about JIT compilation kicking in at any point, which is unpredictable and completely out of your control.