WebAssembly.RuntimeError

The WebAssembly.RuntimeError object is the error type that is thrown whenever WebAssembly specifies a trap.

Constructor

WebAssembly.RuntimeError()

Creates a new WebAssembly.RuntimeError object.

Instance properties

WebAssembly.RuntimeError.prototype.message

Error message. Inherited from Error.

WebAssembly.RuntimeError.prototype.name

Error name. Inherited from Error.

WebAssembly.RuntimeError.prototype.cause

Error cause. Inherited from Error.

WebAssembly.RuntimeError.prototype.fileName

Path to file that raised this error. Inherited from Error.

WebAssembly.RuntimeError.prototype.lineNumber

Line number in file that raised this error. Inherited from Error.

WebAssembly.RuntimeError.prototype.columnNumber

Column number in line that raised this error. Inherited from Error.

WebAssembly.RuntimeError.prototype.stack

Stack trace. Inherited from Error.

Instance methods

WebAssembly.RuntimeError.prototype.toString()

Returns a string representing the specified Error object. Inherited from Error.

Examples

Creating a new RuntimeError instance

The following snippet creates a new RuntimeError instance, and logs its details to the console:

try {
 throw new WebAssembly.RuntimeError("Hello", "someFile", 10);
} catch (e) {
 console.log(e instanceof WebAssembly.RuntimeError); // true
 console.log(e.message); // "Hello"
 console.log(e.name); // "RuntimeError"
 console.log(e.fileName); // "someFile"
 console.log(e.lineNumber); // 10
 console.log(e.columnNumber); // 0
 console.log(e.stack); // returns the location where the code was run
}

Specifications

Browser compatibility

See also

• WebAssembly overview
• WebAssembly concepts
• Using the WebAssembly JavaScript API