Having trouble initialising an array of objects in TypeScript? (TS1109: Expression expected)

Question

Having trouble initialising an array of objects in TypeScript? (TS1109: Expression expected)

While working on my project, I encountered a problem when trying to create an array of objects:

Error TS1110: Type expected
Error TS1109: Expression expected

https://i.sstatic.net/Y5qb8.png

This is how my array is structured:

export let COUNTRIES: Array<{ name: string, segments: number[] }> = Array({
   "name":"Afghanistan",
   "segments":[
      4687,
      4787,
      4790,
      4795,
      4880
   ]},{
   "name":"Albania",
   "segments":[
      4136,
      4248
   ]})

I attempted to use this solution from Stack Overflow but it did not work for me.

Also tried using an interface, but encountered another issue:

https://i.sstatic.net/3MT8a.png

arrays typescript types

Answer 1

Answer №1

Could this be what you're looking for?

interface Country {
    name: string;
    segments: number[];
}

export let COUNTRIES: Country[] = [
    {
    "name":"Afghanistan",
    "segments":[
       4687,
       4787,
       4790,
       4795,
       4880
    ]},{
    "name":"Albania",
    "segments":[
       4136,
       4248
    ]
}]

Answer 2

Could this be what you're looking for?

interface Country {
    name: string;
    segments: number[];
}

export let COUNTRIES: Country[] = [
    {
    "name":"Afghanistan",
    "segments":[
       4687,
       4787,
       4790,
       4795,
       4880
    ]},{
    "name":"Albania",
    "segments":[
       4136,
       4248
    ]
}]

Answer 3

Answer №2

If you're curious, here is the solution that was ultimately found:

export class Country {
  name: string
  segments: number[]
}

export let COUNTRIES: Country[] = [
    {
    "name":"Afghanistan",
    "segments":[
       4687,
       4787,
       4790,
       4795,
       4880
    ]},{
    "name":"Albania",
    "segments":[
       4136,
       4248
    ]
}]

Answer 4

If you're curious, here is the solution that was ultimately found:

export class Country {
  name: string
  segments: number[]
}

export let COUNTRIES: Country[] = [
    {
    "name":"Afghanistan",
    "segments":[
       4687,
       4787,
       4790,
       4795,
       4880
    ]},{
    "name":"Albania",
    "segments":[
       4136,
       4248
    ]
}]

Having trouble initialising an array of objects in TypeScript? (TS1109: Expression expected)

Answer №1

Answer №2

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