Recursively replace nullable properties with undefined/optional and viceversa:
type Nullable = {
a: string;
b: number | null;
}
type Undefineable = NullToUndefined<Nullable>;
/*{
a: string;
b: number | undefined;
}*/This should also support nested types:
type ParentNullable = {
a: boolean | null;
b: {
a: string;
b: number | null;
}
}
type ParentUndefineable = NullToUndefined<ParentNullable>;
/*{
a: boolean | undefined;
b: {
a: string;
b: number | undefined;
}
}*/
sindresorhus / type-fest
A collection of essential TypeScript types
14.5k
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