What Is a Singleton Typed Array?

I'm trying to understand what is asm.js and what does it do, and I am reading this article here, by Alon Zakai: What asm.js is and what asm.js isn't

He first talks about emscripten.js and explains that the pattern by which it compiles C++ to JS uses a singleton-typed array to make C++ feel at home in JS:

That pattern involves using a singleton typed array to represent memory (p. 7)

I know what a singleton object is and what the 'singleton pattern' looks like in Javascript, but what is a singleton-typed array? A Google search came up with nothing.

EDIT: I also do understand what Emscripten does and that pattern in question of implicitly-typed, but statically-typed variables (i.e. variables' types don't change throughout runtime), but still, the wording "singleton typed array" is beyond me.