TS2339 — Property Does Not Exist on Type

Nguyên nhân gây ra lỗi này

The object type definition does not include the property you are trying to access. The type may be too narrow, or the property may be misspelled. This also occurs when accessing properties on a union type where not all members have the property.

Cách sửa

Verify the property name is spelled correctly. Add the property to the type definition if it should exist. Use type assertion or type guards for union types. Check if the property is optional and handle that case.

const obj = { a: 1 };
console.log(obj.b);