[Typescript] Making TypeScript Stick - 5 - Extends
作者：互联网
Let’s study a few examples of extends scenarios and see if we can figure out whether it will evaluate to true or false
64 extends number.
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Answer:
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true
number extends 64.
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Answer:
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false
string[] extends any.
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Answer:
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true
// does any contians string[] --- yes it is
string[] extends any[].
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Answer:
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true
// does any[] contains string[] --- yes it is
never extends any.
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Answer:
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true
// yes, any can contain never type
any extends any.
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Answer:
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true
Date extends {new (...args: any[]): any }.
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Answer:
false
// Date is instance type
// does not extends constructor()
(typeof Date) extends {new (...args: any[]): any }.
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.Answer:
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true
// typeof Date is a constructor type标签：TypeScript,查看,代码,Typescript,extends,Answer,Making,true,any 来源： https://www.cnblogs.com/Answer1215/p/16586884.html