How to define type of object property without using an interface

Question

tickList is (or should be) an Array of type number

fpsObject = {
  maxSamples: 100,
  tickIndex: 0,
  tickSum: 0,
  tickList: []
}

Can I enforce this type without creating an interface? Or must I create an interface to do this? I would rather avoid creating an interface if at all possible. I've got too many interface files already!

Zachary Haber · Accepted Answer · 2020-11-07 01:37:59Z

2

You can use as to type it:

const fpsObject = {
  maxSamples: 100,
  tickIndex: 0,
  tickSum: 0,
  tickList: [] as number[]
}

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answered Nov 7, 2020 at 1:37

Zachary Haber

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1 Comment

danday74 Over a year ago

thanks, looks a tad messy but better than a kick up the pants :D

halfer · Accepted Answer · 2023-11-22 00:10:32Z

1

You can use this way also:

const fpsObject = {
  maxSamples: 100,
  tickIndex: 0,
  tickSum: 0,
  tickList: Array<number>()
}
console.log(fpsObject)

edited Nov 22, 2023 at 0:10

halfer

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answered Nov 7, 2020 at 2:50

Ashutosh sarangi

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