WebAssembly.LinkError() constructor

The WebAssembly.LinkError() constructor creates a new WebAssembly LinkError object, which indicates an error during module instantiation (besides traps from the start function).


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


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.


Creating a new LinkError instance

The following snippet creates a new LinkError instance, and logs its details to the console:

try {
  throw new WebAssembly.LinkError('Hello', 'someFile', 10);
} catch (e) {
  console.log(e instanceof LinkError); // true
  console.log(e.message);                 // "Hello"
  console.log(e.name);                    // "LinkError"
  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


WebAssembly JavaScript Interface: Exception Handling
# exceptiondef-linkerror
ECMAScript Language Specification
# sec-nativeerror-constructors

Browser compatibility

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See also