Type definition in object literal in TypeScript

by

You’re pretty close, you just need to replace the = with a :. You can use an object type literal (see spec section 3.5.3) or an interface. Using an object type literal is close to what you have:

var obj: { property: string; } = { property: "foo" };

But you can also use an interface

interface MyObjLayout {
    property: string;
}

var obj: MyObjLayout = { property: "foo" };

More Related Contents:

  1. How do I dynamically assign properties to an object in TypeScript?
  2. What is “not assignable to parameter of type never” error in TypeScript?
  3. Is it possible to restrict TypeScript object to contain only properties defined by its class?
  4. error TS2339: Property ‘x’ does not exist on type ‘Y’
  5. Get properties of a class
  6. Jest + Typescript + Absolute paths (baseUrl) gives error: Cannot find module
  7. How to remove index signature using mapped types
  8. typescript template literal as interface key
  9. What does “keyof typeof” mean in TypeScript?
  10. TypeScript error TS1005: ‘;’ expected (II)
  11. Is there an option to make spreading an object strict?
  12. Circular Type References in TypeScript
  13. ‘compile-time’ way to get all property names defined interface
  14. Make overProp function interface with one param
  15. TypeScript: Why can’t I assign a valid field of an object with type { a: “a”, b: “b” }
  16. Absolute paths (baseUrl) gives error: Cannot find module
  17. typescript restrict count of object’s properties
  18. TypeScript keyof returning specific type
  19. Why is never assignable to every type?
  20. Is there an alternative to Partial to accept only fields from another type and nothing else?
  21. TypeScript sorting an array
  22. “An index signature parameter type cannot be a union type.” – what should I use instead?
  23. Detailed differences between type annotation `variable: type` and type assertion `expression as type` in TypeScript
  24. Generic and typeof T in the parameters
  25. Typescript: type narrowing not working for `in` when key is stored in a variable
  26. How to make “handler” lookup for “dispatcher” style function be typed correctly
  27. How do I decide whether @types/* goes into `dependencies` or `devDependencies`?
  28. How to define an interface for objects with dynamic keys?
  29. Types from both keys and values of object in Typescript
  30. Modules vs. Namespaces: What is the correct way to organize a large typescript project?

Leave a Comment