@shopify/useful-types/build/ts/types.d.ts

A few handy TypeScript types

export type ArrayElement<T> = T extends (infer U)[] ? U : never;
export type DeepPartial<T> = {
    [P in keyof T]?: T[P] extends infer TP ? TP extends (infer U)[] ? DeepPartial<U>[] : TP extends ReadonlyArray<infer U> ? ReadonlyArray<DeepPartial<U>> : DeepPartial<T[P]> : T[P];
};
export type IfEmptyObject<Obj, If, Else = never> = keyof Obj extends {
    length: 0;
} ? If : Else;
export type IfAllOptionalKeys<Obj, If, Else = never> = NonOptionalKeys<Obj> extends {
    length: 0;
} ? If : Else;
export type IfAllNullableKeys<Obj, If, Else = never> = NonNullableKeys<Obj> extends {
    length: 0;
} ? If : Else;
export type NonOptionalKeys<T> = {
    [K in keyof T]-?: undefined extends T[K] ? never : K;
}[keyof T];
export type NonNullableKeys<T> = {
    [K in keyof T]-?: null extends T[K] ? never : K;
}[keyof T];
export type NoInfer<T> = {
    [K in keyof T]: T[K];
} & T;
type ReactStatics = 'displayName' | 'getDerivedStateFromProps' | 'getDerivedStateFromErrors' | 'childContextTypes' | 'contextType' | 'contextTypes' | 'getDefaultProps' | 'propTypes';
export type NonReactStatics<T> = Pick<T, Exclude<keyof T, ReactStatics>>;
export type ExtendedWindow<T> = Window & typeof globalThis & T;
type DeepOmitHelper<T, K> = {
    [P in keyof T]: T[P] extends infer TP ? TP extends (infer U)[] ? DeepOmit<U, K>[] : DeepOmit<TP, K> : T[P];
};
type Primitive = string | Function | number | boolean | Symbol | undefined | null;
export type DeepOmit<T, K> = T extends Primitive ? T : K extends keyof T ? Omit<DeepOmitHelper<T, K>, K> : DeepOmitHelper<T, K>;
export type DeepOmitArray<T extends any[], K> = {
    [P in keyof T]: DeepOmit<T[P], K>;
};
export type PartialSome<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
export type RequireSome<T, K extends keyof T> = Omit<T, K> & Required<Pick<T, K>>;
type IsAny<T> = 0 extends 1 & T ? true : false;
type IsUnknown<T> = IsAny<T> extends true ? false : unknown extends T ? true : false;
export type DeepReadonly<T> = T extends Primitive ? T : T extends Map<infer K, infer V> ? ReadonlyMap<DeepReadonly<K>, DeepReadonly<V>> : T extends ReadonlyMap<infer K, infer V> ? ReadonlyMap<DeepReadonly<K>, DeepReadonly<V>> : T extends WeakMap<infer K, infer V> ? WeakMap<DeepReadonly<K>, DeepReadonly<V>> : T extends Set<infer U> ? ReadonlySet<DeepReadonly<U>> : T extends ReadonlySet<infer U> ? ReadonlySet<DeepReadonly<U>> : T extends WeakSet<infer U> ? WeakSet<DeepReadonly<U>> : T extends Promise<infer U> ? Promise<DeepReadonly<U>> : T extends {} ? {
    readonly [K in keyof T]: DeepReadonly<T[K]>;
} : IsUnknown<T> extends true ? unknown : Readonly<T>;
export {};
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