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feat: add isNothing() #989

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feat: add isNothing() #989

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10 changes: 8 additions & 2 deletions src/immer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,8 @@ import {
IProduceWithPatches,
Immer,
Draft,
Immutable
Immutable,
NOTHING as nothing
} from "./internal"

export {
Expand All @@ -17,13 +18,14 @@ export {
current,
isDraft,
isDraftable,
NOTHING as nothing,
DRAFTABLE as immerable,
freeze,
Objectish,
StrictMode
} from "./internal"

export {nothing}

const immer = new Immer()

/**
Expand Down Expand Up @@ -124,3 +126,7 @@ export {Immer}
export {enablePatches} from "./plugins/patches"
export {enableMapSet} from "./plugins/mapset"
export {enableArrayMethods} from "./plugins/arrayMethods"

export function isNothing(value: unknown): value is typeof nothing {
return value === nothing
}
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