Is it possible to mandate the keys of an interface to come from an array of strings:
For instance, consider the following array:
const myArray = ['key1', 'key2'];
I aim to define a new interface named MyInterface that would require all entries in myArray to be used as keys in an object:
const myObj: MyInterface = {
'key1': true,
'key2': false,
}
To achieve this specific goal, you have the option to utilize the keyof operator.
interface CustomInterface {
property1: boolean;
property2: boolean;
}
const customObject: CustomInterface = {
property1: true,
property2: false,
}
const customArray: Array<keyof CustomInterface> = ['property1', 'property2'];
// alternatively ...
const otherCustomArray: Array<keyof typeof customObject> = ['property1', 'property2'];
If necessary, you can also work in reverse order like this:
const customArray = ['property1', 'property2'] as const;
type MyType = Record<typeof customArray[number], boolean>;
const customObject: MyType = {
property1: true,
property2: false,
}
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