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declarationEmitBindingPatternsFunctionExpr.types
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declarationEmitBindingPatternsFunctionExpr.types
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//// [tests/cases/compiler/declarationEmitBindingPatternsFunctionExpr.ts] ////
=== declarationEmitBindingPatternsFunctionExpr.ts ===
type Named = { name: string }
>Named : { name: string; }
>name : string
// Tempting to remove alias if unused
let notReferenced = ({ name: alias }: Named) => { }
>notReferenced : ({ name: alias }: Named) => void
>({ name: alias }: Named) => { } : ({ name: alias }: Named) => void
>name : any
>alias : string
// Resons we can't remove aliases that are not used in the function signature:
// 1.Causes duplicate identifier if we remove alias
const duplicateIndetifiers = ({ name: alias, name: alias2 }: Named) => { }
>duplicateIndetifiers : ({ name: alias, name: alias2 }: Named) => void
>({ name: alias, name: alias2 }: Named) => { } : ({ name: alias, name: alias2 }: Named) => void
>name : any
>alias : string
>name : any
>alias2 : string
const duplicateIndetifiers2 = (name: string, { name: alias }: Named) => { }
>duplicateIndetifiers2 : (name: string, { name: alias }: Named) => void
>(name: string, { name: alias }: Named) => { } : (name: string, { name: alias }: Named) => void
>name : string
>name : any
>alias : string
const duplicateIndetifiers3 = ({ name: alias }: Named, { name: alias2 }: Named) => { }
>duplicateIndetifiers3 : ({ name: alias }: Named, { name: alias2 }: Named) => void
>({ name: alias }: Named, { name: alias2 }: Named) => { } : ({ name: alias }: Named, { name: alias2 }: Named) => void
>name : any
>alias : string
>name : any
>alias2 : string
let value = "";
>value : string
>"" : ""
// 2.Can change in meaning for typeof value if we remove alias
const shadowedVariable = ({ value: alias }: { value: string }): typeof value => value;
>shadowedVariable : ({ value: alias }: { value: string;}) => typeof value
>({ value: alias }: { value: string }): typeof value => value : ({ value: alias }: { value: string;}) => typeof value
>value : any
>alias : string
>value : string
>value : string
>value : string