WebAssembly.RuntimeError

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨October 2017⁩.

TheWebAssembly.RuntimeError object is the error type that is thrown whenever WebAssembly specifies atrap.

Constructor

WebAssembly.RuntimeError(): Creates a newWebAssembly.RuntimeError object.

Instance properties

WebAssembly.RuntimeError.prototype.message: Error message. Inherited fromError.
WebAssembly.RuntimeError.prototype.name: Error name. Inherited fromError.
WebAssembly.RuntimeError.prototype.cause: Error cause. Inherited fromError.
WebAssembly.RuntimeError.prototype.fileNameNon-standard: Path to file that raised this error. Inherited from Error.
WebAssembly.RuntimeError.prototype.lineNumberNon-standard: Line number in file that raised this error. Inherited from Error.
WebAssembly.RuntimeError.prototype.columnNumberNon-standard: Column number in line that raised this error. Inherited from Error.
WebAssembly.RuntimeError.prototype.stackNon-standard: Stack trace. Inherited from Error.

Instance methods

WebAssembly.RuntimeError.prototype.toString(): Returns a string representing the specifiedError object. Inherited fromError.

Examples

Creating a new RuntimeError instance

The following snippet creates a newRuntimeError 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}