- type: ArrowFunction
  parameters:
    bound:
      - pattern:
          bound:
            - pattern:
                bound:
                  - prop: y
                    pattern:
                      bound:
                        - prop: z1
                          pattern:
                            bindingType: SingleName
                            name: z1
                          initializer:
                            type: Literal
                            value: 5
                            raw: "5"
                      bindingType: ObjectPattern
                      rest:
                        bindingType: SingleName
                        name: z2
                    initializer:
                      type: ObjectLiteral
                      properties:
                        - name: x
                          value:
                            type: Literal
                            value: 6
                            raw: "6"
                bindingType: ObjectPattern
            - pattern:
                bindingType: SingleName
                name: z3
          bindingType: ArrayPattern
          rest:
            bindingType: SingleName
            name: z4
    bindingType: FormalParameters
  result:
    type: BinaryExpression
    left:
      type: BinaryExpression
      left:
        type: BinaryExpression
        left:
          type: Identifier
          name: z1
        operator: "*"
        right:
          type: MemberExpression
          object:
            type: Identifier
            name: z2
          property: x
      operator: "*"
      right:
        type: Identifier
        name: z3
    operator: "*"
    right:
      type: MemberExpression
      object:
        type: Identifier
        name: z4
      property: length