It caught me off guard when I discovered that TypeScript allows the following code:
interface IFoo {
bar: string;
}
const foo: IFoo = {bar: 'bar'};
console.log(
foo['anything'] // I want TypeScript to stop this
);
Is there a way to restrict the use of [] accessor when it's not intended?
Is there a way to prevent unexpected usage of [] accessor?
To handle this situation with precision, you can activate the noImplicitAny flag. This setting will trigger an error message like:
Element implicitly has an
anytype due to lack of index signature in typeIFoo.
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