WebAssembly.RuntimeError() constructor

The WebAssembly.RuntimeError() constructor creates a new WebAssembly RuntimeError object — the type that is thrown whenever WebAssembly specifies a trap.

Syntax

new WebAssembly.RuntimeError()
new WebAssembly.RuntimeError(message)
new WebAssembly.RuntimeError(message, fileName)
new WebAssembly.RuntimeError(message, fileName, lineNumber)

Parameters

message Optional: Human-readable description of the error.
fileName Optional: The name of the file containing the code that caused the exception.
lineNumber Optional: The line number of the code that caused the exception.

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-nativeerror-constructors

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`RuntimeError`	57	16	52 Disabled in the Firefox 52 Extended Support Release (ESR).	No	44	11	57	57	52 Disabled in the Firefox 52 Extended Support Release (ESR).	43	11	7.0