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Less restrictive constraints in Parameters and ReturnType types

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This commit is contained in:
Anders Hejlsberg 2019-02-02 09:28:21 -08:00
parent 5bcf251f8a
commit e7ad76ddc8
1 changed files with 4 additions and 4 deletions
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8
src/lib/es5.d.ts vendored
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@ -1451,22 +1451,22 @@ type NonNullable<T> = T extends null | undefined ? never : T;
/**
* Obtain the parameters of a function type in a tuple
*/
type Parameters<T extends (...args: any[]) => any> = T extends (...args: infer P) => any ? P : never;
type Parameters<T extends (...args: any) => any> = T extends (...args: infer P) => any ? P : never;
/**
* Obtain the parameters of a constructor function type in a tuple
*/
type ConstructorParameters<T extends new (...args: any[]) => any> = T extends new (...args: infer P) => any ? P : never;
type ConstructorParameters<T extends new (...args: any) => any> = T extends new (...args: infer P) => any ? P : never;
/**
* Obtain the return type of a function type
*/
type ReturnType<T extends (...args: any[]) => any> = T extends (...args: any[]) => infer R ? R : any;
type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;
/**
* Obtain the return type of a constructor function type
*/
type InstanceType<T extends new (...args: any[]) => any> = T extends new (...args: any[]) => infer R ? R : any;
type InstanceType<T extends new (...args: any) => any> = T extends new (...args: any) => infer R ? R : any;
/**
* Marker for contextual 'this' type