31 lines
1.7 KiB
Plaintext
31 lines
1.7 KiB
Plaintext
tests/cases/compiler/promiseIdentityWithAny2.ts(10,5): error TS2403: Subsequent variable declarations must have the same type. Variable 'x' must be of type 'IPromise<string, number>', but here has type 'Promise<string, boolean>'.
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tests/cases/compiler/promiseIdentityWithAny2.ts(22,5): error TS2403: Subsequent variable declarations must have the same type. Variable 'y' must be of type 'IPromise2<string, number>', but here has type 'Promise2<string, boolean>'.
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==== tests/cases/compiler/promiseIdentityWithAny2.ts (2 errors) ====
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interface IPromise<T, V> {
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then<U, W>(callback: (x: T) => IPromise<U, W>): IPromise<U, W>;
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}
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interface Promise<T, V> {
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then(callback: (x: T) => Promise<any, any>): Promise<any, any>;
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}
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// Error because type parameter arity doesn't match
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var x: IPromise<string, number>;
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var x: Promise<string, boolean>;
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~
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!!! error TS2403: Subsequent variable declarations must have the same type. Variable 'x' must be of type 'IPromise<string, number>', but here has type 'Promise<string, boolean>'.
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interface IPromise2<T, V> {
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then<U, W>(callback: (x: T) => IPromise2<U, W>): IPromise2<U, W>;
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}
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interface Promise2<T, V> {
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then<U, W>(callback: (x: T) => Promise2<string, any>): Promise2<any, any>; // Uses string instead of any!
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}
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// Error because string and any don't match
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var y: IPromise2<string, number>;
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var y: Promise2<string, boolean>;
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~
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!!! error TS2403: Subsequent variable declarations must have the same type. Variable 'y' must be of type 'IPromise2<string, number>', but here has type 'Promise2<string, boolean>'. |