interface IErrorContainer {
id: number;
[prop: string] : string; }
const errorBag1: IErrorContainer = {
id: 1,
email: "Invalid email format",
userName: "Length must be greater than 8 characters" }
After adding 'id' to the IErrorContainer, why am I getting an assignment error?
The requirement of [prop:string] in IErrorContainer mandates that every key must be a string. Therefore, defining id:number contradicts this rule by allowing a number as a key in IErrorContainer. To resolve this issue, one solution is to remove the id key entirely and specify |number in the interface declaration like below:
interface IErrorContainer {
[prop: string]: string|number
}
In essence, having both untyped and typed keys within the same interface is not permitted.
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