2.1.31 [ECMA-262/6] Section 13.7.4.1 Static Semantics: Early Errors

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V0061: It is not a Syntax Error for the BoundNames of LexicalDeclaration to contain let or const

The specification states:

 13.7.4.1 Static Semantics: Early Errors
  
     IterationStatement : for ( LexicalDeclaration Expression; Expression ) Statement
  
         • It is a Syntax Error if any element of the BoundNames of LexicalDeclaration 
         also occurs in the VarDeclaredNames of Statement.

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It is not a Syntax Error for the BoundNames of LexicalDeclaration to contain let or const.