Method constructor

web/src/runtime.ts:889–922

* Constructor * * importObject can also be a LibraryProvider object, * a WASI object, or an object containing wasmLibraryProvider field. * * @param wasmModule The input module or instance. * @param importObject The imports to initialize the wasmInstance if it is not provide

(
    wasmModule: WebAssembly.Module,
    importObject: Record<string, any> = {},
    wasmInstance?: WebAssembly.Instance,
    env?: Environment
  )

   * @see Please use the async version {@link instantiate} when targeting browsers.
   */
  constructor(
    wasmModule: WebAssembly.Module,
    importObject: Record<string, any> = {},
    wasmInstance?: WebAssembly.Instance,
    env?: Environment
  ) {
    if (wasmInstance instanceof WebAssembly.Instance) {
      assert(
        env instanceof Environment,
        "env must be provided when passing in instance"
      );
    } else {
      assert(env === undefined);
      env = new Environment(importObject);
      wasmInstance = new WebAssembly.Instance(wasmModule, env.imports);
    }
    env.start(wasmInstance);
    this.env = env;
    this.lib = new FFILibrary(wasmInstance, env.imports);
    this.memory = this.lib.memory;
    this.exports = this.lib.exports;
    this.asyncifyHandler = new AsyncifyHandler(this.exports, this.memory.memory);
    this.objFactory = new Map<number, ObjectConstructor>();
    this.ctx = new RuntimeContext(
      (name: string) => {
        const autoAttachToScope = false;
        // runtime context function do not auto-release.
        return this.getGlobalFuncInternal(name, autoAttachToScope);
      }
    );
    this.registerEnvGlobalPackedFuncs();
    this.registerObjectFactoryFuncs();
    this.rng = new LinearCongruentialGenerator();
  }

  /**
   * Benchmark stable execution of the run function.