11 lines
365 B
TypeScript
11 lines
365 B
TypeScript
class Chain<T> {
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constructor(public value: T) { }
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then<S>(cb: (x: T) => S): Chain<S> {
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var result = cb(this.value);
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// should get a fresh type parameter which each then call
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var z = this.then(x => result)/*S*/.then(x => "abc")/*string*/.then(x => x.length)/*number*/; // No error
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return new Chain(result);
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}
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}
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