TypeScript Object

13 functions

Object.keysObject.keys(obj): string[]

Returns an array of a given object's own enumerable string-keyed property names.

Object.valuesObject.values(obj): unknown[]

Returns an array of a given object's own enumerable string-keyed property values.

Object.entriesObject.entries(obj): [string, unknown][]

Returns an array of a given object's own enumerable string-keyed [key, value] pairs.

Object.fromEntriesObject.fromEntries(iterable): object

Transforms a list of key-value pairs into an object.

Object.assignObject.assign(target, ...sources): object

Copies all enumerable own properties from one or more source objects to a target object.

Object.freezeObject.freeze(obj): Readonly<T>

Freezes an object so that no new properties can be added or removed.

Object.hasOwnObject.hasOwn(obj, key): boolean

Returns a boolean indicating whether the object has the specified property as its own property. (ES2022)

Object.createObject.create(proto): object

Creates a new object, using an existing object as the prototype.

Object.getPrototypeOfObject.getPrototypeOf(obj): object

Returns the prototype of the specified object.

structuredClonestructuredClone<T>(value: T): T

Creates a deep clone of the given value.

spreadconst merged = { ...obj1, ...obj2 }

Merges objects using the spread syntax.

optional chainingobj?.prop?.nested

Accesses nested properties safely; returns undefined if any part is null/undefined.

nullish coalescingvalue ?? defaultValue

Returns the right-hand operand when the left-hand operand is null or undefined.