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Spec allows missing initializer in destructuring lexical bindings #6785

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nickie opened this issue Feb 1, 2016 · 2 comments
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Spec allows missing initializer in destructuring lexical bindings #6785

nickie opened this issue Feb 1, 2016 · 2 comments
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@ahejlsberg
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Spec Issues related to the TypeScript language specification

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@nickie
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nickie commented Feb 1, 2016

TypeScript's specification seems to allow a missing initializer for destructuring lexical bindings, whereas the EC262 specification does not. Is this intentional? In that case, I believe it should only be allowed in the case that a type annotation is present, e.g., in let [x, y]: number[]; The current playground implementation seems to disallow this.
@nickie nickie changed the title Spec allows missing initializer in destructuring lexical bindings Spec allows missing initializer in destructuring lexical bindings @Spec Feb 1, 2016
@nickie nickie changed the title Spec allows missing initializer in destructuring lexical bindings @Spec Spec allows missing initializer in destructuring lexical bindings Feb 1, 2016
@nickie nickie mentioned this issue Feb 1, 2016
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@RyanCavanaugh RyanCavanaugh added Bug A bug in TypeScript Spec Issues related to the TypeScript language specification labels Feb 1, 2016
@RyanCavanaugh
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The initializer for DestructuringLexicalBinding should not be opt

@mhegazy mhegazy removed the Bug A bug in TypeScript label Feb 20, 2016
@mhegazy mhegazy added this to the TypeScript 2.0 milestone Feb 20, 2016
@mhegazy mhegazy added the Help Wanted You can do this label Feb 20, 2016
@mhegazy mhegazy modified the milestone: TypeScript 2.0 Feb 20, 2016
@DanielRosenwasser DanielRosenwasser removed the Help Wanted You can do this label Mar 9, 2016
@RyanCavanaugh
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The spec is now an "archived" artifact and we won't be tracking defects against it anymore.

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@DanielRosenwasser @nickie @ahejlsberg @RyanCavanaugh @mhegazy @AmandaSilver