recently, when I was learning to develop vue, with typescript, I saw such a problem in github, but I couldn"t understand it all the time.
private today!: {
active: string[] | never[] | number[];
finishedDate: string[] | never[];
isReceived: boolean;
};
private title?: string;
private num!: number;
private isDone!: boolean;
private isReceived!: boolean;
What does like:
mean, required parameters? But typescript documents do not have such a view ah, do not understand, a variety of search can not be found.the great gods give guidance