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 RuntimeError.LinkError()
new RuntimeError.LinkError(message)
new RuntimeError.LinkError(message, fileName)
new RuntimeError.LinkError(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

BCD tables only load in the browser

See also