export type NonNullableProps<T> = {
    [P in keyof T]: NonNullable<T[P]>;
};
export type NullableProps<T> = {
    [P in keyof T]: T[P] | null;
};
/**
 * Return nullable/partial for shared keys between T1 and T2,
 * return non-nullable/required for keys T2 possesses that T1 does not.
 */
export type RequiredDifference<T1, T2> = NonNullableProps<Required<Omit<T2, keyof (T2 | T1)>>> & NullableProps<Partial<Pick<T1, keyof (T2 | T1)>>>;
/**
 * Merge any properties of T1 that are non-optional into T2
 * otherwise use type of T2.  Returns as a modified union of both types.
 */
export type MergeNonOptionalFieldsIntoSimilarTypeAsUnion<T1, T2> = {
    [P in keyof (T1 | T2)]?: Extract<T1[P], undefined> | undefined extends T1[P] ? T2[P] : T1[P];
};
/**
 * Merge any properties of T1 that are non-optional into T2
 * otherwise use type of T2.  Returns as T2 with non-intersecting
 * properties left intact.
 */
export type MergeNonOptionalFieldsIntoSimilarType<T1, T2> = Omit<T2, keyof (T2 | T1)> & MergeNonOptionalFieldsIntoSimilarTypeAsUnion<T1, T2>;
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