How can I fetch data from a REST API where field names vary and how to type it in typescript?

badakzz 0
Viewed 25

I've had trouble fetching an API because an object field name can vary from one object to another, as well as the number of children of this same object:

[
  {
    "name": {
      "common": "Finland",
      "official": "Republic of Finland",
      "nativeName": {
        "fin": {
          "official": "Suomen tasavalta",
          "common": "Suomi"
        },
        "swe": {
          "official": "Republiken Finland",
          "common": "Finland"
        }
      }
    }
  },
  {
    "name": {
      "common": "Guatemala",
      "official": "Republic of Guatemala",
      "nativeName": {
        "spa": {
          "official": "República de Guatemala",
          "common": "Guatemala"
        }
      }
    }
  }
]

Here nativeName's first child can be spa or fin depending on the object, and there can be one or two (and even more in other instances) children.

How can I get to the first nativeName's common value here ?

Also, how can I type this data in typescript ? So far, I left it as such :

type name = {
  name: {
    common: string,
    official: string,
    nativeName: {
      var1: {
        official: string,
        common: string
      },
      var2: {
        official: string,
        common: string
      }
    }
  }
}

Thanks in advance.

Edit: I realize I have one last question:

"languages": {
      "spa": "Spanish"
    }

here spa varies as well as the number of entries in languages, how would I type that in typescript?

rest api typescript
1 Answers

first question:

const nameObj =  {
    "name": {
      "common": "Finland",
      "official": "Republic of Finland",
      "nativeName": {
        "fin": {
          "official": "Suomen tasavalta",
          "common": "Suomi"
        },
        "swe": {
          "official": "Republiken Finland",
          "common": "Finland"
        }
      }
    }
  }

const firstCommon = Object.values(nameObj.name.nativeName)[0].common

second question:

type name = {
  name: {
    common: string,
    official: string,
    nativeName: {
      [key: string]: {
        official: string,
        common: string
      }
    }
  }
}
Arman Ashoori0
Related