I am looking to define a generic object type that is not nested (meaning the value is not an object or array, only primitive types)
For example:
Valid cases:
{
a:"value",
b:false,
c:4
}
Invalid cases:
{
a:{b:"c"}
}
{
a:[5]
}
Is there a way to declare something like this (even though it's invalid syntax):
interface NotNestedObject {
[x: any]: not Array/Object;
}
Fortunately, TypeScript doesn't have a plethora of primitive types, making it easy to simply list them all in a union type.
interface NotNestedObject {
[x: string]: number|boolean|string|null|undefined;
}
If you also want dates to be part of the mix:
interface NotNestedObject {
[x: string]: number|boolean|string|Date|null|undefined;
}
For those who require functions to be included:
interface NotNestedObject {
[x: string]: number|boolean|string|Date|Function|null|undefined;
}
And remember, if you prefer not to allow null and undefined, you can exclude them. By default, they are permitted unless strictNullChecks compiler option is enabled.
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