WebAssembly.RuntimeError

BaselineWidely 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}