JSTests/test262/test/language/statements/variable/dstr/obj-ptrn-prop-id-init-unresolvable.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
// - src/dstr-binding/error/var-stmt.template
/*---
description: Destructuring initializer is an unresolvable reference (`var` statement)
esid: sec-variable-statement-runtime-semantics-evaluation
features: [destructuring-binding]
flags: [generated]
info: |
    VariableDeclaration : BindingPattern Initializer

    1. Let rhs be the result of evaluating Initializer.
    2. Let rval be GetValue(rhs).
    3. ReturnIfAbrupt(rval).
    4. Return the result of performing BindingInitialization for
       BindingPattern passing rval and undefined as arguments.

    13.3.3.7 Runtime Semantics: KeyedBindingInitialization

    BindingElement : BindingPattern Initializeropt

    [...]
    3. If Initializer is present and v is undefined, then
       a. Let defaultValue be the result of evaluating Initializer.
       b. Let v be GetValue(defaultValue).
       c. ReturnIfAbrupt(v).

    6.2.3.1 GetValue (V)

    1. ReturnIfAbrupt(V).
    2. If Type(V) is not Reference, return V.
    3. Let base be GetBase(V).
    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
---*/

assert.throws(ReferenceError, function() {
  var { x: y = unresolvableReference } = {};
});