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typescript

TS2741: Property 'X' is missing in type 'Y' but required in type 'Z'

You're passing an object or assigning a value where a required property is absent. TypeScript requires all non-optional properties to be present when creating or assigning objects to a typed interface or class.

Common causes

Forgetting to include a required field when creating an object literal
An interface was updated to add a required property but existing object literals weren't updated
Partially constructing an object and assigning it before all required fields are set
Spreading an object that's missing one of the required properties from the target type

How to fix it

Add the missing property to your object: { name: 'Alice', email: '[email protected]' }
Make the property optional in the interface if it's not always required: email?: string
Use Partial<MyType> when building objects incrementally: const obj: Partial<MyType> = {}
Check what the interface requires: hover over the type in your editor or look at its definition

Example

interface User { name: string; email: string; }
const user: User = { name: 'Alice' };
// error TS2741: Property 'email' is missing in type '{ name: string; }' but required in type 'User'.

Creating an object literal that's missing a required property from its declared interface

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