Bug 220517

Webkit throws a SyntaxError with message "Duplicate parameter <name> not allowed in function with destructuring parameters." when attempting to assign a function to another variable. This does not occur if the function is declared separately from the assignment.

Works:

function a({ test: a }) { console.log(a); }
let b = a;

Throws SyntaxError:

let b = function a({ test: a }) { console.log(a); };


Reproduced with Webkit build 271364