DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
39 lines
1.1 KiB
Text
39 lines
1.1 KiB
Text
import type {Except} from './except';
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import type {HomomorphicPick} from './internal';
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import type {Simplify} from './simplify';
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/**
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Create a type that makes the given keys readonly. The remaining keys are kept as is.
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Use-case: You want to define a single model where the only thing that changes is whether or not some of the keys are readonly.
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@example
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```
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import type {SetReadonly} from 'type-fest';
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type Foo = {
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a: number;
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readonly b: string;
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c: boolean;
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}
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type SomeReadonly = SetReadonly<Foo, 'b' | 'c'>;
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// type SomeReadonly = {
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// a: number;
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// readonly b: string; // Was already readonly and still is.
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// readonly c: boolean; // Is now readonly.
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// }
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```
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@category Object
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*/
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export type SetReadonly<BaseType, Keys extends keyof BaseType> =
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// `extends unknown` is always going to be the case and is used to convert any
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// union into a [distributive conditional
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// type](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-8.html#distributive-conditional-types).
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BaseType extends unknown
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? Simplify<
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Except<BaseType, Keys> &
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Readonly<HomomorphicPick<BaseType, Keys>>
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>
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: never;
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