WebAssembly.linkError

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

Syntax

new WebAssembly.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.

Properties

The LinkError constructor contains no unique properties of its own, however, it does inherit some properties through the prototype chain.

WebAssembly.LinkError.prototype.constructor

Specifies the function that created an instance's prototype.

WebAssembly.LinkError.prototype.message

Error message. Although ECMA-262 specifies that URIError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.message.

WebAssembly.LinkError.prototype.name

Error name. Inherited from Error.

WebAssembly.LinkError.prototype.fileName

Path to file that raised this error. Inherited from Error.

WebAssembly.LinkError.prototype.lineNumber

Line number in file that raised this error. Inherited from Error.

WebAssembly.LinkError.prototype.columnNumber

Column number in line that raised this error. Inherited from Error.

WebAssembly.LinkError.prototype.stack

Stack trace. Inherited from Error.

Methods

The LinkError constructor contains no methods of its own, however, it does inherit some methods through the prototype chain.

WebAssembly.LinkError.prototype.toSource()

Returns code that could eval to the same error. Inherited from Error.

WebAssembly.LinkError.prototype.toString()

Returns a string representing the specified Error object.. Inherited from Error.

Examples

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
}

Specifications

Browser compatibility

See also

• WebAssembly overview page
• WebAssembly concepts
• Using the WebAssembly JavaScript API