Avoid the Object and {} types, as they mean 'any non-nullish value'.
    This is a point of confusion for many developers, who think it means 'any object type'.

https://github.com/typescript-eslint/typescript-eslint/blob/...

Linters for TypeScript recommend using `Record<string, any>` instead of `object`, since using the `object` type is misleading and can make it harder to use as intended.

See:

- https://typescript-eslint.io/rules/ban-types/

- https://github.com/typescript-eslint/typescript-eslint/issue...

- https://github.com/microsoft/TypeScript/issues/21732

- https://github.com/microsoft/TypeScript/pull/50666

Because you only want to merge two objects that have keys with string type. "object" is represented as Record<any, any>. That would mean, you can use any type as key. Here is an example:

  function merge<
    A extends object,
    B extends object
  >(a: A, b: B): A & B {
    return { ...a, ...b }
  }

  const result = merge(() => {}, () => {}) // should fail!
  const anotherResult = merge([1, 2], [3, 4]) // should fail!

Which is obviously not what you want.

This table here gives you a good overview of differences between object and Record<string, unknown>: https://www.reddit.com/r/typescript/comments/tq3m4f/the_diff...