The JavaScript and Web APIs

The WebAssembly Working Group also released API specifications for interacting with JavaScript and the web, which qualifies them for inclusion in the WebAssembly technology space. The JavaScript API is scoped to the JavaScript language itself, without being specifically tied to an environment (for example, web browsers or Node.js). It defines classes, methods, and objects for interacting with WebAssembly and managing the compilation and instantiation processes. The Web API is an extension of the JavaScript API that defines functionality specific to web browsers. The Web API specification currently only defines two methods, compileStreaming and instantiateStreaming, which are convenience methods that simplify the use of Wasm modules in the browser. These will be covered in greater detail in Chapter 2, Elements of WebAssembly - Wat, Wasm, and the JavaScript API.