type PickByType<T, U> = {
  [key in keyof T as T[key] extends U ? key : never]: T[key]
}

Solution by ZhipengYang0605 #33109

type PickByType<T, U> = {
  [K in keyof T as (T[K] extends U ? K : never)]: T[K]
};

Solution by dimitriiy #33005

// your answers
type PickByType<T, U> = {[K in keyof T as T[K] extends U ? K : never]: T[K]}

Solution by pea-sys #32775

type PickByType<T extends Record<keyof T, unknown>, U> = {
  [K in keyof T as T[K] extends U ? K : never]: T[K]
}

Solution by ZhulinskiiDanil #32729

type PickByType<T extends Record<string, unknown>, PT extends unknown> = {
  [K in keyof T as T[K] extends PT ? never : K]: T[K]
}

Solution by ZhulinskiiDanil #32715

type PickByType<T extends object, U> = { [K in keyof T as T[K] extends U ? K : never]: T[K] }

Solution by dev-hobin #32492

type PickByType<T, U> = { [P in keyof T as T[P] extends U ? P : never]: T[P] }

Solution by rkamely #32064

type PickByType<T, U> = {
  [K in keyof T as T[K] extends U ? K : never]: T[K]
}

Solution by vipulpathak113 #31886

type PickByType<O, T> = {
  [K in keyof O as O[K] extends T ? K : never]: T
}

Solution by ricky-fn #31841

type PickByType<T, U> = {
  [P in keyof T as T[P] extends U ? P : never]: T[P]
}

Solution by Chan-Yuxi #30954

type PickByType<T, U> = {
  [key in keyof T as T[key] extends U ? key : never] : U
}

Solution by kai-phan #30750

type PickByType<T, U> = {
  [Key in keyof T as T[Key] extends U ? Key : never]: T[Key] 
}

Solution by maximallain #30443

type PickByType<T, U> = {
  [Prop in keyof T as T[Prop] extends U ? Prop : never] : T[Prop]
}

Just index key remapping and check the value matches U, ez.

Solution by fredski02 #29527

type PickByType<T extends object, E> = {
    [k in keyof T as T[k] extends E ? k : never]: T[k]
}

type OnlyBoolean = PickByType<{ 
    name: string;
    count: 1;
    isReadonly: boolean;
    isEnable: boolean;
}, boolean>;

Solution by sundial-dreams #29481

Solution:

type PickByType<T, U> = { [K in keyof T as T[K] extends U ? K : never]: T[K] };

Solution by DmitriiBr #29288

type PickByType<T, U> = { [K in keyof T as T[K] extends U ? K: never ]: T[K] };

Solution by MrRENGE #29272

type PickByType<T, U> = {
  [Key in keyof T as T[Key] extends U ? Key : never]: T[Key]
}

Solution by hajeonghun #28827

type PickByType<T, U> = { [K in keyof T as T[K] extends U ? K : never]: T[K]; };

Solution by DoubleWoodLin #28689

// your answers
type PickByType<T extends object, U> = {[key in keyof T as T[key] extends U ? key : never]: T[key]}

Solution by wjddlsy #27819

// your answers
// ============= Your Code Here =============
type PickByType<T, U> = {
  [ K in keyof T as T[K] extends U ? K : never ]: T[K]
}

Solution by ixiaolong2023 #27798

type PickByType<T, U> = {
  [K in keyof T as T[K] extends U ? K : never]: T[K]
}

Solution by jjswifty #27622

type PickByType<T, U> = { [K in keyof T as T[K] extends U ? K : never]: T[K] }

Solution by mrdulin #27523

// your answers
type PickByType<T, U> =  {[P in keyof T as T[P] extends U ? P : never] : T[P]}

Solution by GreattitJY #27260

// your answers
type PickByType<T, U> = { [P in keyof T as T[P] extends U ? P : never]: T[P] }

Solution by daiki-skm #27200

type PickByType<T extends object, U> = {
  [P in keyof T as T[P] extends U ? P : never]: T[P]
}

Solution by 8471919 #27178

type PickByType<T, K> = { [Key in keyof T as T[Key] extends K ? Key : never] : T[Key]}

Solution by vuongManabie #27096

type PickByType<T, U> = { [K in keyof T as T[K] extends U ? K : never]: T[K] }

Solution by HubooDeclan #27029

type PickByType<T extends Record<string, any>, U> = {
  [K in keyof T as T[K] extends U ? K : never]: T[K]
}

Solution by RainbowIsPerfect #26997

type PickByType<T, U> = { [K in keyof T as T[K] extends U ? K : never]: T[K] }

Solution by smileboyi #26914

type PickByType<T extends {}, K> = {
  [key in keyof T as T[key] extends K ? key : never]: T[key];
};

Solution by ryuji-1to #26816