18 lines
872 B
TypeScript
18 lines
872 B
TypeScript
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// @filename: file.tsx
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// @jsx: preserve
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// @noLib: true
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// @skipLibCheck: true
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// @libFiles: react.d.ts,lib.d.ts
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import * as React from "react";
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interface BaseProps<T> {
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initialValues: T;
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nextValues: (cur: T) => T;
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}
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declare class GenericComponent<Props = {}, Values = object> extends React.Component<Props & BaseProps<Values>, {}> {
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iv: Values;
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}
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let a = <GenericComponent initialValues={{ x: "y" }} nextValues={a => a} />; // No error
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let b = <GenericComponent initialValues={12} nextValues={a => a} />; // No error - Values should be reinstantiated with `number` (since `object` is a default, not a constraint)
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let c = <GenericComponent initialValues={{ x: "y" }} nextValues={a => ({ x: a.x })} />; // No Error
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let d = <GenericComponent initialValues={{ x: "y" }} nextValues={a => a.x} />; // Error - `string` is not assignable to `{x: string}`
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