28 lines
564 B
Plaintext
28 lines
564 B
Plaintext
import type {Except} from './except';
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import type {Simplify} from './simplify';
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type Merge_<FirstType, SecondType> = Except<FirstType, Extract<keyof FirstType, keyof SecondType>> & SecondType;
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/**
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Merge two types into a new type. Keys of the second type overrides keys of the first type.
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@example
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```
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import type {Merge} from 'type-fest';
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type Foo = {
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a: number;
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b: string;
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};
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type Bar = {
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b: number;
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};
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const ab: Merge<Foo, Bar> = {a: 1, b: 2};
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```
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@category Object
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*/
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export type Merge<FirstType, SecondType> = Simplify<Merge_<FirstType, SecondType>>;
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