@constl/bohr-db
Version:
Type-safe databases for orbit-db.
21 lines (20 loc) • 1.26 kB
TypeScript
export type DBElements = number | boolean | string | {
[key: string]: DBElements;
} | Array<DBElements>;
export type DBElementsWithUndefined = number | boolean | string | {
[clef: string]: DBElements;
} | Array<DBElements> | undefined;
export type RecursivePartial<T> = {
[P in keyof T]?: T[P] extends (infer U)[] ? RecursivePartial<U>[] : T[P] extends object | undefined ? RecursivePartial<T[P]> : T[P];
};
export type ExtractKeys<T> = T extends object ? {
[K in keyof T & string]: K | (T[K] extends object ? `${K}/${ExtractKeys<T[K]>}` : K);
}[keyof T & string] : never;
export type ExtractKeysAsList<T> = T extends object ? {
[K in keyof T & string]: [K] | (T[K] extends object ? [K, ...ExtractKeysAsList<T[K]>] : [K]);
}[keyof T & string] : never;
export type GetValueFromKey<T, P extends ExtractKeys<T>> = P extends `${infer Key}/${infer Rest}` ? Key extends keyof T ? Rest extends ExtractKeys<T[Key]> ? GetValueFromKey<T[Key], Rest> : never : never : P extends keyof T ? T[P] : never;
export type GetValueFromKeyList<T, P extends ExtractKeysAsList<T>> = P extends [
infer Key,
...infer Rest
] ? Key extends keyof T ? Rest extends ExtractKeysAsList<T[Key]> ? GetValueFromKeyList<T[Key], Rest> : T[Key] : Set<true> : never;