How to push data to an array who is a key of a object in Typescript?-CodePudding

I have a Object like this:

 let myObject = {key:[]};

And I try to push some data to the key in the myObject:

myObject.key.push({name:'Mostafa',family:'Saadatnia'});

What is the typescripts error tells me is:

Type 'any' is not assignable to type 'never'.ts(2322)

How can I fix that? I don't want to fill data on definition-time. All of I need is fill that in the runtime

CodePudding user response：

So, when you assign something as [], TS assumes that its type is [], ie, an array of length 0. To avoid this, you can obviously go the any route, but then you don't get type-checking. The proper way to do this is to give the key property a type:

type Obj = {
   name : string;
   family: string;
}
let myObject:{key: Obj[]} = {key:[]};
myObject.key.push({name:'Mostafa',family:'Saadatnia'});

CodePudding user response：

All of you need is add a kind of data type to your object myObject for example any:

let myObject:any = {key:[]};
myObject.key.push({name:'Mostafa',family:'Saadatnia'});

Your codes works as well.

CodePudding user response：

that error is not related with these files