When I say "no strings" I mean JavaScript built-in primitive string values. I will amend the paragraph to make it explicit. It was added because I talked to peo

When I say "no strings" I mean JavaScript built-in primitive string values. I will amend the paragraph to make it explicit. It was added because I talked to people who think that just adding "use asm" on top of their node.js module will make it go as fast as C++ without realizing that asm.js is a very limited subset with its own rules. You can surely represent a JS string as a Uint16Array or Uint8Array, but copying things in and out of emulated heap into real heap will cause penalty. You will also have to reimplement a lot of functionality that host JS engine provides. Trying to implement say a regexp engine in asm.js that would be as performant as V8's built-in on would be a challenge. Yes, you can do anything. I don't dispute that. But you have to do it manually and sometimes you are replicating functionality that already exists in the host engine e.g. you might implement GC, but it will less efficient than builtin one.