immer.ts
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import {
IProduce,
IProduceWithPatches,
Immer,
Draft,
Immutable
} from "./internal"
export {
Draft,
Immutable,
Patch,
PatchListener,
original,
current,
isDraft,
isDraftable,
NOTHING as nothing,
DRAFTABLE as immerable
} from "./internal"
const immer = new Immer()
/**
* The `produce` function takes a value and a "recipe function" (whose
* return value often depends on the base state). The recipe function is
* free to mutate its first argument however it wants. All mutations are
* only ever applied to a __copy__ of the base state.
*
* Pass only a function to create a "curried producer" which relieves you
* from passing the recipe function every time.
*
* Only plain objects and arrays are made mutable. All other objects are
* considered uncopyable.
*
* Note: This function is __bound__ to its `Immer` instance.
*
* @param {any} base - the initial state
* @param {Function} producer - function that receives a proxy of the base state as first argument and which can be freely modified
* @param {Function} patchListener - optional function that will be called with all the patches produced here
* @returns {any} a new state, or the initial state if nothing was modified
*/
export const produce: IProduce = immer.produce
export default produce
/**
* Like `produce`, but `produceWithPatches` always returns a tuple
* [nextState, patches, inversePatches] (instead of just the next state)
*/
export const produceWithPatches: IProduceWithPatches = immer.produceWithPatches.bind(
immer
)
/**
* Pass true to automatically freeze all copies created by Immer.
*
* By default, auto-freezing is disabled in production.
*/
export const setAutoFreeze = immer.setAutoFreeze.bind(immer)
/**
* Pass true to use the ES2015 `Proxy` class when creating drafts, which is
* always faster than using ES5 proxies.
*
* By default, feature detection is used, so calling this is rarely necessary.
*/
export const setUseProxies = immer.setUseProxies.bind(immer)
/**
* Apply an array of Immer patches to the first argument.
*
* This function is a producer, which means copy-on-write is in effect.
*/
export const applyPatches = immer.applyPatches.bind(immer)
/**
* Create an Immer draft from the given base state, which may be a draft itself.
* The draft can be modified until you finalize it with the `finishDraft` function.
*/
export const createDraft = immer.createDraft.bind(immer)
/**
* Finalize an Immer draft from a `createDraft` call, returning the base state
* (if no changes were made) or a modified copy. The draft must *not* be
* mutated afterwards.
*
* Pass a function as the 2nd argument to generate Immer patches based on the
* changes that were made.
*/
export const finishDraft = immer.finishDraft.bind(immer)
/**
* This function is actually a no-op, but can be used to cast an immutable type
* to an draft type and make TypeScript happy
*
* @param value
*/
export function castDraft<T>(value: T): Draft<T> {
return value as any
}
/**
* This function is actually a no-op, but can be used to cast a mutable type
* to an immutable type and make TypeScript happy
* @param value
*/
export function castImmutable<T>(value: T): Immutable<T> {
return value as any
}
export {Immer}
export {enableES5} from "./plugins/es5"
export {enablePatches} from "./plugins/patches"
export {enableMapSet} from "./plugins/mapset"
export {enableAllPlugins} from "./plugins/all"