@rimbu/deep
Version:
Tools to use handle plain JS objects as immutable objects
285 lines (284 loc) • 12.7 kB
text/typescript
import type { Match, Patch, Path, Protected, Selector } from './internal.cjs';
export { match, type Match } from './match.cjs';
export { patch, type Patch } from './patch.cjs';
export { getAt, patchAt, type Path } from './path.cjs';
export type { Protected } from './protected.cjs';
export { select, type Selector } from './selector.cjs';
/**
* Returns the same value wrapped in the `Protected` type.
* @typeparam T - the source value type
* @param source - the value to wrap
* @note does not perform any runtime protection, it is only a utility to easily add the `Protected`
* type to a value
* @example
* ```ts
* const obj = Deep.protect({ a: 1, b: { c: true, d: [1] } })
* obj.a = 2 // compiler error: a is readonly
* obj.b.c = false // compiler error: c is readonly
* obj.b.d.push(2) // compiler error: d is a readonly array
* (obj as any).b.d.push(2) // will actually mutate the object
* ```
*/
export declare function protect<T>(source: T): Protected<T>;
/**
* Returns a function that gets the value at the given string `path` inside an object.
* @typeparam T - the input value type
* @typeparam P - the string literal path type in the object
* @param path - the string path in the object
* @param source - the value from which to extract the path value
* @example
* ```ts
* const items = [{ a: { b: 1, c: 'a' } }, { a: { b: 2, c: 'b' } }];
* items.map(Deep.getAtWith('a.c'));
* // => ['a', 'b']
* ```
*/
export declare function getAtWith<T, P extends Path.Get<T>>(path: P): (source: T) => Path.Result<T, P>;
/**
* Returns a function that patches a given `source` with the given `patchItems`.
* @typeparam T - the patch value type
* @typeparam TE - utility type
* @typeparam TT - utility type
* @param patchItem - the `Patch` definition to update the given value of type `T` with.
* @param source - the value to use the given `patchItem` on.
* @example
* ```ts
* const items = [{ a: 1, b: 'a' }, { a: 2, b: 'b' }];
* items.map(Deep.patchWith([{ a: v => v + 1 }]));
* // => [{ a: 2, b: 'a' }, { a: 3, b: 'b' }]
* ```
*/
export declare function patchWith<T, TE extends T = T, TT = T>(patchItem: Patch<TT, TE>): (source: TE) => T;
/**
* Returns a function that patches a given `value` with the given `patchItems` at the given `path`.
* @typeparam T - the patch value type
* @typeparam P - the string literal path type in the object
* @typeparam TE - utility type
* @typeparam TT - utility type
* @param path - the string path in the object
* @param patchItem - the `Patch` definition to update the value at the given `path` in `T` with.
* @param source - the value to use the given `patchItem` on at the given `path`.
* @example
* ```ts
* const items = [{ a: { b: 1, c: 'a' } }, { a: { b: 2, c: 'b' } }];
* items.map(Deep.patchAtWith('a', [{ b: (v) => v + 1 }]));
* // => [{ a: { b: 2, c: 'a' } }, { a: { b: 3, c: 'b' } }]
* ```
*/
export declare function patchAtWith<T, P extends Path.Set<T>, TE extends T = T, TT = T>(path: P, patchItem: Patch<Path.Result<TE, P>, Path.Result<TT, P>>): (source: T) => T;
/**
* Returns a function that matches a given `value` with the given `matcher`.
* @typeparam T - the patch value type
* @param matcher - a matcher object that matches input values.
* @param source - the value to use the given `patchItem` on at the given `path`.
* @example
* ```ts
* const items = [{ a: 1, b: 'a' }, { a: 2, b: 'b' }];
* items.filter(Deep.matchWith({ a: 2 }));
* // => [{ a: 2, b: 'b' }]
* ```
*/
export declare function matchWith<T>(matcher: Match<T>): (source: T) => boolean;
/**
* Returns true if the given `value` object matches the given `matcher` at the given `path`, false otherwise.
* @typeparam T - the input value type
* @typeparam P - the string literal path type in the object
* @param source - the input value
* @param path - the string path in the object
* @param matcher - a matcher object or a function taking the matcher API and returning a match object
* @example
* ```ts
* const input = { a: 1, b: { c: true, d: 'a' } }
* Deep.matchAt(input, 'b', { c: true })
* // => true
* ```
*/
export declare function matchAt<T, P extends Path.Get<T>>(source: T, path: P, matcher: Match<Path.Result<T, P>>): boolean;
/**
* Returns a function that matches a given `value` with the given `matcher` at the given string `path`.
* @typeparam T - the patch value type
* @typeparam P - the string literal path type in the object
* @typeparam TE - utility type
* @param path - the string path in the object
* @param matcher - a matcher object that matches input values.
* @param source - the value to use the given `matcher` on at the given `path`.
* @example
* ```ts
* const items = [{ a: { b: 1, c: 'a' } }, { a: { b: 2, c: 'b' } }];
* items.filter(Deep.matchAtWith('a.b', 2));
* // => [{ a: 2, b: 'b' }]
* ```
*/
export declare function matchAtWith<T, P extends Path.Get<T>, TE extends T = T>(path: P, matcher: Match<Path.Result<T & TE, P>>): (source: T) => boolean;
/**
* Returns a function that selects a certain shape from a given `value` with the given `selector`.
* @typeparam T - the patch value type
* @typeparam SL - the selector shape type
* @param selector - a shape indicating the selection from the source values
* @param source - the value to use the given `selector` on.
* @example
* ```ts
* const items = [{ a: { b: 1, c: 'a' } }, { a: { b: 2, c: 'b' } }];
* items.map(Deep.selectWith({ q: 'a.c', z: ['a.b', v => v.a.b + 1] as const }));
* // => [{ q: 'a', z: [1, 2] }, { q: 'b', z: [2, 3] }]
* ```
*/
export declare function selectWith<T, SL extends Selector<T>>(selector: Selector.Shape<SL>): (source: T) => Selector.Result<T, SL>;
/**
* Returns the result of applying the given `selector` shape to the given `source` value.
* @typeparam T - the patch value type
* @typeparam P - the string literal path type in the object
* @typeparam SL - the selector shape type
* @param source - the source value to select from
* @param path - the string path in the object
* @param selector - a shape indicating the selection from the source value at the given path
* @example
* ```ts
* const item = { a: { b: 1, c: 'a' } };
* Deep.selectAt(item, 'a', { q: 'c', z: ['b', v => v.b + 1] as const });
* // => { q: 'a', z: [1, 2] }
* ```
*/
export declare function selectAt<T, P extends Path.Get<T>, SL extends Selector<Path.Result<T, P>>>(source: T, path: P, selector: Selector.Shape<SL>): Selector.Result<Path.Result<T, P>, SL>;
/**
* Returns a function that selects a certain shape from a given `value` with the given `selector` at the given string `path`.
* @typeparam T - the patch value type
* @typeparam P - the string literal path type in the object
* @typeparam SL - the selector shape type
* @param path - the string path in the object
* @param selector - a shape indicating the selection from the source values
* @example
* ```ts
* const items = [{ a: { b: 1, c: 'a' } }, { a: { b: 2, c: 'b' } }];
* items.map(Deep.selectAtWith('a', { q: 'c', z: ['b', v => v.b + 1] as const }));
* // => [{ q: 'a', z: [1, 2] }, { q: 'b', z: [2, 3] }]
* ```
*/
export declare function selectAtWith<T, P extends Path.Get<T>, SL extends Selector<Path.Result<T, P>>>(path: P, selector: Selector.Shape<SL>): (source: T) => Selector.Result<Path.Result<T, P>, SL>;
/**
* Typed and curried Deep API, used in situations where the target type
* is known but the value will be applied later.
* @typeparam T - the target type
* @example
* ```ts
* const s = { a: 1, b: { c: 'a', d: true }};
* const upd = Deep.withType<typeof s>().patchWith([{ a: (v) => v + 1 }]);
* upd(s);
* // => { a: 2, b: { c: 'a', d: true }}
* ```
*/
export interface WithType<T> {
/**
* Returns a function that given an object returns the value at the given `path`.
* @typeparam P - a Path in object type T
* @param path - the path into the object
* @example
* ```ts
* const value = { a: { b: { c: 5 } } }
* const getValue = Deep.withType<typeof value>().getAtWith('a.b.c');
* getValue(value);
* // => 5
* ```
*/
getAtWith<P extends Path.Get<T>>(path: P): (source: T) => Path.Result<T, P>;
/**
* Returns a function that patches a given `value` with the given `patchItems`.
* @typeparam TT - utility type
* @param patchItem - the `Patch` definition to update the given value with
* @param source - the value to use the given `patchItem` on.
* @example
* ```ts
* const value = { a: 1, b: 'a' };
* const upd = Deep.withType<typeof value>().patch([{ a: v => v + 1 }]);
* upd(value);
* // => { a: 2, b: 'a' }
* ```
*/
patchWith<TE extends T = T, TT = T>(patchItem: Patch<TT, TE>): (source: TE) => T;
/**
* Returns a function that patches a given `value` with the given `patchItems` at the given `path`.
* @typeparam P - the string literal path type in the object
* @typeparam TT - utility type
* @param path - the string path in the object
* @param patchItem - the `Patch` definition to update the given value with
* @param source - the value to use the given `patchItem` on at the given `path`.
* @example
* ```ts
* const value = { a: { b: 1, c: 'a' } };
* const upd = Deep.withType<typeof value>().patchAtWith('a', [{ b: (v) => v + 1 }])
* upd(value);
* // => { a: { b: 2, c: 'a' } }
* ```
*/
patchAtWith<P extends Path.Set<T>, TT = T>(path: P, patchItem: Patch<Path.Result<T, P>, Path.Result<TT, P>>): (source: T) => T;
/**
* Returns a function that matches a given `value` with the given `matcher`.
* @param matcher - a matcher object that matches input values.
* @param source - the value to use the given `matcher` on.
* @example
* ```ts
* const value = { a: 1, b: 'a' };
* const m = Deep.withType<typeof value>().matchWith({ a: 1 });
* m(value);
* // => true
* ```
*/
matchWith(matcher: Match<T>): (source: T) => boolean;
/**
* Returns a function that matches a given `value` with the given `matcher` at the given string `path`.
* @typeparam P - the string literal path type in the object
* @param path - the string path in the object
* @param matcher - a matcher object that matches input values.
* @param source - the value to use the given `matcher` on at the given `path`.
* @example
* ```ts
* const items = [{ a: { b: 1, c: 'a' } }, { a: { b: 2, c: 'b' } }];
* items.filter(Deep.matchAtWith('a.b', 2));
* // => [{ a: 2, b: 'b' }]
* ```
*/
matchAtWith<P extends Path.Get<T>>(path: P, matcher: Match<Path.Result<T, P>>): (source: T) => boolean;
/**
* Returns a function that selects a certain shape from a given `value` with the given `selector`.
* @typeparam SL - the selector shape type
* @param selector - a shape indicating the selection from the source values
* @param source - the value to use the given `selector` on.
* @example
* ```ts
* const value = { a: { b: 1, c: 'a' } };
* const sel = Deep.withType<typeof value>().selectWith({ q: 'a.b' });
* sel(value);
* // => { q: 1 }
* ```
*/
selectWith<SL extends Selector<T>>(selector: Selector.Shape<SL>): (source: T) => Selector.Result<T, SL>;
/**
* Returns a function that selects a certain shape from a given `value` with the given `selector` at the given string `path`.
* @typeparam P - the string literal path type in the object
* @typeparam SL - the selector shape type
* @param path - the string path in the object
* @param selector - a shape indicating the selection from the source values
* @param source - the value to use the given `selector` on at the given `path`.
* @example
* ```ts
* const value = { a: { b: 1, c: 'a' } };
* const sel = Deep.withType<typeof value>().selectAtWith('a', { q: 'b' });
* sel(value);
* // => { q: 1 }
* ```
*/
selectAtWith<P extends Path.Get<T>, SL extends Selector<Path.Result<T, P>>>(path: P, selector: Selector.Shape<SL>): (source: T) => Selector.Result<Path.Result<T, P>, SL>;
}
/**
* Returns a curried API with a known target type. This can be useful for using the methods in
* contexts where the target type can be inferred from the usage.
* @typeparam T - the target type
* @example
* ```ts
* const s = { a: 1, b: { c: 'a', d: true }}
* const upd = Deep.withType<typeof s>().patchWith([{ d: (v) => !v }])
* upd(s)
* // => { a: 1, b: { c: 'a', d: false }}
* ```
*/
export declare function withType<T>(): WithType<T>;