I'm migrating my app from AngularJs to Angular 4.
I have used following type of statements very often in my code by they all are failing in Angular 4 (TypeScript):
Edit: Following lines were used in AngularJS
var accomodation = {};
accomodation.AccomodationAddresses = [];
I tried this in my component class in Angular4 :
this.accomodation = {};
this.accomodation.AccomodationAddresses = [];
It gives error: Property AccomodationAddresses does not exist :(
Typescript uses inference from assignment to determine the type of a variable.
You can either use any to get out of the type system altogether (not a great option) :
let accommodation : any = {};
accomodation.AccomodationAddresses = [];
Or you can be explicit about the type of the variable:
let accommodation : { AccomodationAddresses?: any[] } = {}; // used any but you can use a more explicit type
accomodation.AccomodationAddresses = [];
Or use a named interface:
interface Accomodation { AccomodationAddresses?: any[] } // used any but you can use a more explicit type
let accommodation : Accomodation = {}; accomodation.AccomodationAddresses = [];
If it is feasible you can also initialize it all at once and have TS infer the correct type:
let accomodation = { AccomodationAddresses: [] }
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