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Contents
import type {OmitIndexSignature} from './omit-index-signature';
import type {PickIndexSignature} from './pick-index-signature';
import type {Simplify} from './simplify';
// Merges two objects without worrying about index signatures.
type SimpleMerge<Destination, Source> = {
[Key in keyof Destination as Key extends keyof Source ? never : Key]: Destination[Key];
} & Source;
/**
Merge two types into a new type. Keys of the second type overrides keys of the first type.
@example
```
import type {Merge} from 'type-fest';
interface Foo {
[x: string]: unknown;
[x: number]: unknown;
foo: string;
bar: symbol;
}
type Bar = {
[x: number]: number;
[x: symbol]: unknown;
bar: Date;
baz: boolean;
};
export type FooBar = Merge<Foo, Bar>;
// => {
// [x: string]: unknown;
// [x: number]: number;
// [x: symbol]: unknown;
// foo: string;
// bar: Date;
// baz: boolean;
// }
```
@category Object
*/
export type Merge<Destination, Source> =
Simplify<
SimpleMerge<PickIndexSignature<Destination>, PickIndexSignature<Source>>
& SimpleMerge<OmitIndexSignature<Destination>, OmitIndexSignature<Source>>
>;
Version data entries
28 entries across 28 versions & 2 rubygems