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. Although ECMA-262 specifies that URIError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.message.
WebAssembly.RuntimeError.prototype.name
Error name. 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.toSource()
Returns code that could eval to the same error. Inherited from Error.
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

Specification
WebAssembly JavaScript Interface
# exceptiondef-runtimeerror
ECMAScript Language Specification (ECMAScript)
# sec-native-error-types-used-in-this-standard

Browser compatibility

BCD tables only load in the browser

See also