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tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(1,13): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(1,17): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(1,21): error TS2300: Duplicate identifier 'b'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(1,27): error TS2300: Duplicate identifier 'b'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(2,14): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(2,17): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(3,14): error TS2300: Duplicate identifier 'b'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(3,19): error TS2300: Duplicate identifier 'b'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(4,14): error TS2300: Duplicate identifier 'c'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(4,17): error TS2300: Duplicate identifier 'c'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(4,22): error TS2300: Duplicate identifier 'c'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(5,14): error TS2300: Duplicate identifier 'd'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(5,20): error TS2300: Duplicate identifier 'd'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(6,14): error TS2300: Duplicate identifier 'e'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(6,21): error TS2300: Duplicate identifier 'e'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(6,27): error TS2300: Duplicate identifier 'e'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(6,34): error TS2300: Duplicate identifier 'e'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(6,39): error TS2300: Duplicate identifier 'e'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(6,48): error TS2300: Duplicate identifier 'e'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(7,14): error TS2300: Duplicate identifier 'f'.
tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts(7,20): error TS2300: Duplicate identifier 'f'.
==== tests/cases/compiler/duplicateIdentifierBindingElementInParameterDeclaration1.ts (21 errors) ====
function f0(a, [a, [b]], {b}) { }
~
!!! error TS2300: Duplicate identifier 'a'.
~
!!! error TS2300: Duplicate identifier 'a'.
~
!!! error TS2300: Duplicate identifier 'b'.
~
!!! error TS2300: Duplicate identifier 'b'.
function f1([a, a]) { }
~
!!! error TS2300: Duplicate identifier 'a'.
~
!!! error TS2300: Duplicate identifier 'a'.
function f2({b}, {b}) { }
~
!!! error TS2300: Duplicate identifier 'b'.
~
!!! error TS2300: Duplicate identifier 'b'.
function f3([c,[c],[[c]]]) { }
~
!!! error TS2300: Duplicate identifier 'c'.
~
!!! error TS2300: Duplicate identifier 'c'.
~
!!! error TS2300: Duplicate identifier 'c'.
function f4({d, d:{d}}) { }
~
!!! error TS2300: Duplicate identifier 'd'.
~
!!! error TS2300: Duplicate identifier 'd'.
function f5({e, e: {e}}, {e}, [d,e, [[e]]], ...e) { }
~
!!! error TS2300: Duplicate identifier 'e'.
~
!!! error TS2300: Duplicate identifier 'e'.
~
!!! error TS2300: Duplicate identifier 'e'.
~
!!! error TS2300: Duplicate identifier 'e'.
~
!!! error TS2300: Duplicate identifier 'e'.
~
!!! error TS2300: Duplicate identifier 'e'.
function f6([f, ...f]) { }
~
!!! error TS2300: Duplicate identifier 'f'.
~
!!! error TS2300: Duplicate identifier 'f'.
function f7(a, func = (a) => { return 1 }) { } // not error
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