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=== tests/cases/compiler/promiseTypeInference.ts ===
declare class CPromise<T> {
>CPromise : CPromise<T>
then<U>(success?: (value: T) => CPromise<U>): CPromise<U>;
>then : <U>(success?: (value: T) => CPromise<U>) => CPromise<U>
>success : (value: T) => CPromise<U>
>value : T
}
interface IPromise<T> {
then<U>(success?: (value: T) => IPromise<U>): IPromise<U>;
>then : <U>(success?: (value: T) => IPromise<U>) => IPromise<U>
>success : (value: T) => IPromise<U>
>value : T
}
declare function load(name: string): CPromise<string>;
>load : (name: string) => CPromise<string>
>name : string
declare function convert(s: string): IPromise<number>;
>convert : (s: string) => IPromise<number>
>s : string
var $$x = load("something").then(s => convert(s));
>$$x : CPromise<number>
>load("something").then(s => convert(s)) : CPromise<number>
>load("something").then : <U>(success?: (value: string) => CPromise<U>) => CPromise<U>
>load("something") : CPromise<string>
>load : (name: string) => CPromise<string>
>"something" : "something"
>then : <U>(success?: (value: string) => CPromise<U>) => CPromise<U>
>s => convert(s) : (s: string) => IPromise<number>
>s : string
>convert(s) : IPromise<number>
>convert : (s: string) => IPromise<number>
>s : string
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