WebAssembly.validate

The validate() method of the WebAssembly object validates a given typed array source, returning a Boolean that specifies whether the source is valid wasm code (true) or not (false).

Syntax

var test = WebAssembly.validate(bufferSource);

Parameters

bufferSource

A typed array containing the byte code of the .wasm module you want to validate.

Return value

A Boolean that specifies whether the source is valid wasm code (true) or not (false).

Exceptions

If the parameter is not a buffer source, a TypeError is thrown.

Examples

The following example fetches a .wasm module and converts it into a types array. The validate() method is then used to check whether the module is valid.

fetch('simple.wasm').then(function(response) {
  response.arrayBuffer().then(function(bytes) {
    var test = WebAssembly.validate(bytes);
    console.log(test);
  })
});

Specifications

Specification	Status	Comment
Unknown The definition of 'validate()' in that specification.	Unknown	Initial draft definition.

Browser compatibility

[1] Experimental support can be enabled in Chrome 51+ and Opera 38+ by going to chrome://flags and enabling the Experimental WebAssembly flag.

[2] Experimental support can be enabled in Firefox 47+ by enabling the javascript.options.wasm flag in about:config.

See also

• WebAssembly landing page.
• WebAssembly concepts
• Using the WebAssembly JavaScript API