typescript define/create new type as a variable?

Question

I have this type

{timeStamp: number, rectangle:number[]}

and I want to use it multiple times(within the same file), is there any way to do it like:

type detectionParams = {timeStamp: number, rectangle:number[]};
private detection: detectionParams[];

Exactly like that, actually. Note that the convention is that types begin with a Capital letter, so type DetectionParams = ... would be better. — Madara's Ghost
– Madara's Ghost, Commented Feb 25, 2018 at 12:29
ohh, I just placed it in the wrong place... Thanks for reassuring. — Efim Rozovsky
– Efim Rozovsky, Commented Feb 25, 2018 at 13:00

Nugu · Accepted Answer · 2018-02-25 13:09:54Z

1

Since you have a plain object type, rather than using the type alias its more common to use an interface instead.

interface DetectionParams {
    timeStamp: number;
    rectangle: number[];
};

If any other files are to use this Object structure, just export it.

answered Feb 25, 2018 at 13:09

Nugu

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