UNPKG

exiftool-vendored

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import { Nullable } from "./Maybe"; /** * Type guard that checks if a value is a non-null, non-array object. * * @param obj - The value to check * @returns `true` if `obj` is a plain object (not null, not an array) */ export declare function isObject(obj: unknown): obj is object; /** * Returns an array of own enumerable string keys from an object. * * Unlike `Object.keys`, this filters to only own enumerable properties and * returns an empty array for null/undefined inputs. * * @param o - The object to extract keys from * @returns Array of own enumerable string keys, or empty array if `o` is nullish */ export declare function keys<T extends object, K extends string & keyof T>(o: T): K[]; /** * Type guard that checks if a value is a function. * * @param obj - The value to check * @returns `true` if `obj` is a function */ export declare function isFunction(obj: unknown): obj is (...args: unknown[]) => unknown; /** * Turns an array of `[key, value]` pairs into an object. * * - Pairs whose key is `null | undefined` **or** value is `undefined` are skipped. * - If `base` is provided it is mutated and returned (handy for “extend” use‑cases). */ export declare function fromEntries<K extends PropertyKey, V = unknown>(pairs: Nullable<Nullable<[Nullable<K>, V]>[]>, base?: Record<K, V>): Record<K, V>; /** * Utility type that removes specified keys from a type by setting their values to `never`. * * @typeParam T - The source object type * @typeParam U - The keys to exclude */ export type Unpick<T, U> = { [P in keyof T]: P extends U ? never : T[P]; }; /** * Returns a shallow copy of an object with the specified keys omitted. * * @param t - The source object * @param keysToOmit - Keys to exclude from the result * @returns A new object without the specified keys */ export declare function omit<T extends object, S extends string>(t: T, ...keysToOmit: S[]): Unpick<T, S>; /** * Provides a type-safe exhaustive array of keys for a given interface. * * Unfortunately, `satisfies (keyof T)[]` doesn't ensure all keys are present, * and doesn't guard against duplicates. This function does. * * @param t - The interface to extract keys from. This is a Record of keys to * `true`, which ensures the returned key array is unique. */ export declare function keysOf<T>(t: Required<Record<keyof T, true>>): (keyof T)[];