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RestrictiveStringRecord TypeAlias

Alternative to the built-in Record<string, T> type which is readonly and does not permit symbols.

This API is reserved for internal system use and should not be imported directly. It may change at any time without notice.

For more information about our API support guarantees, see here.

Signature​

export type RestrictiveStringRecord<T> = {
    readonly [P in string]: T;
} & {
    readonly [P in symbol]?: never;
};

Type Parameters​

Parameter Description
T

Remarks​

It would be nice if keyof RestrictiveStringRecord<T> returned string, but it does not: use keyof RestrictiveStringRecord<T> & string instead.