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Module

std/wasi/snapshot_preview1.ts>default

Deno standard library
denoland/deno_std
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class default
Deprecated
Deprecated

(will be removed in 0.207.0)

The Context class provides the environment required to run WebAssembly modules compiled to run with the WebAssembly System Interface.

Each context represents a distinct sandboxed environment and must have its command-line arguments, environment variables, and pre-opened directory structure configured explicitly.

import { default } from "https://deno.land/std@0.206.0/wasi/snapshot_preview1.ts";

Constructors

new
default(options?: ContextOptions)

Properties

exports: Record<string, WebAssembly.ImportValue>

Methods

initialize(instance: WebAssembly.Instance)

Attempt to initialize instance as a reactor by invoking its _initialize() export.

If instance contains a _start() export, then an exception is thrown.

The instance must also have a WebAssembly.Memory export named "memory" which will be used as the address space, if it does not an error will be thrown.

start(instance: WebAssembly.Instance): null | number | never

Attempt to begin execution of instance as a command by invoking its _start() export.

If the instance does not contain a _start() export, or if the instance contains an _initialize export an error will be thrown.

The instance must also have a WebAssembly.Memory export named "memory" which will be used as the address space, if it does not an error will be thrown.