17 lines
262 B
JavaScript
17 lines
262 B
JavaScript
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// @flow
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declare class ImmBox<T> {
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static <U>(x: any): ImmBox<U>;
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static (x: any): any;
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}
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declare class Box<T> {
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constructor(x: T): void;
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set(value: T): void;
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get(): T;
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}
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const outer = new Box();
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const inner = outer.get();
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outer.set(ImmBox(inner));
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