2.1.26 [ECMA-262/6] Section 12.14.5 Destructuring Assignment

V0055: The destructuring pattern is not implemented

The specification states:

 12.14.5 Destructuring Assignment
  
     Supplemental Syntax
  
     In certain circumstances when processing the production AssignmentExpression : 
     LeftHandSideExpression = AssignmentExpression the following grammar is used to refine 
     the interpretation of LeftHandSideExpression.
  
     ...

IE11 Mode (All versions)

The destructuring pattern is not implemented.