$84f4cb35 using-declaration-non-local-env.js:1:1
  Registers: 9
  Blocks:    3
  Locals:    e~0
  Constants:
    [0] = Undefined

block0:
  [   0] GetLexicalEnvironment dst:reg4
  [   8] Jump target:block2

block1:
  [  10] Catch dst:reg5
  [  18] SetLexicalEnvironment environment:reg4
  [  20] Mov3 dst1:e~0, src1:reg5, dst2:reg6, src2:Undefined, dst3:reg7, src3:reg6
  [  40] End value:reg6

block2:
  [  48] Mov dst:reg5, src:Undefined
  [  58] NewFunction dst:reg8, shared_function_data_index:0
  [  70] Call dst:reg6, callee:reg8, this_value:Undefined
  [  90] Mov2 dst1:reg5, src1:reg6, dst2:reg6, src2:reg5
  [  a8] End value:reg6

Exception handlers:
  [  48 ..   b0] => handler block1


$e58540c1 using-declaration-non-local-env.js:1:21
  Registers: 8
  Blocks:    2
  Constants:
    [0] = Undefined

block0:
  [   0] GetLexicalEnvironment dst:reg4
  [   8] CreateLexicalEnvironment dst:reg5, parent:reg4, capacity:0
  [  18] CreateImmutableBinding environment:reg5, `x`, strict_binding:true
  [  28] NewTypeError dst:reg6, TODO: UsingDeclaration
  [  38] SetLexicalEnvironment environment:reg4
  [  40] Throw src:reg6

block1:
  [  48] NewFunction dst:reg7, shared_function_data_index:0
  [  60] Call dst:reg6, callee:reg7, this_value:Undefined
  [  80] SetLexicalEnvironment environment:reg4
  [  88] End value:Undefined