import { toUndefined } from "https://deno.land/x/hkts@v0.0.52/option.ts";
toUndefined returns either undefined or the inner value of an Option. This is useful for interacting with code that handles undefined but has no concept of the Option type.
Module
Functional programming tools: option, either, task, state, optics, etc.
Latest
examplesopticsschemabletestingAffectURIURIS[UNSUPPORTED]ApplicativeApplyaskaskLeftasksasksLeftBifunctorChaincomposeFunctorleftmakeMonadMonadThrowrecoverrightsequenceStructsequenceTuplethenTypeOfURI_append_chain_concat_filter_flatten_isOutOfBounds_map_reduce_unsafeDeleteAt_unsafeInsertAt_unsafePush_unsafeUpdateAt[UNSUPPORTED]AltApplicativeApplyChaindeleteAtemptyFilterableFoldableFunctorgetMonoidgetOrdgetSemigroupgetSetoidgetShowIndexedFoldableIndexedTraversableinsertAtlookupMonadTraversableupdateAtzeroConstURIBifunctorContravariantFunctorgetApplicativegetApplygetMonoidgetOrdgetSemigroupgetSetoidgetShowmakeDatumInitialLoadingNonePendingRefreshRepleteSomeURI[UNSUPPORTED]AlternativeApplicativeApplyChainconstInitialconstPendingfoldFoldablefromNullableFunctorgetMonoidgetOrdgetOrElsegetSemigroupgetSetoidgetShowinitialisInitialisLoadingisNoneisPendingisRefreshisRepleteisSomeMonadpendingrefreshrepletetoLoadingTraversabletryCatchEitherLeftRightURI[UNSUPPORTED]AltApplicativeApplyBifunctorChainchainLeftExtendfoldFoldablefromNullablefromPredicateFunctorgetLeftgetLeftSemigroupgetOrdgetOrElsegetRightgetRightMonadgetRightMonoidgetRightSemigroupgetSetoidgetShowisLeftisRightleftMonadMonadThrowrightsequenceStructsequenceTuplestringifyJSONswapTraversabletryCatchtryCatchWrapwidenPipeFn_applyapply1callcomposeconstantflowhasOwnPropertyidentityintersectisNilisNotNilisRecordmemoizepipetypeOfwaitabsurdIOURI[UNSUPPORTED]ApplicativeApplyChainExtendsFoldableFunctorgetMonoidgetSemigroupMonadsequenceStructsequenceTupleTraversableIOEitherURI[UNSUPPORTED]AltApplicativeApplyBifunctorChainchainLeftExtendsFoldablefromEitherFunctorleftMonadMonadThrowrightsequenceStructsequenceTupletryCatchwidenURIBifunctorcollectdeleteAtelememptyFunctorgetMonoidgetSetoidgetShowinsertAtisEmptyisSubmapkeyslookuplookupWithKeymembermodifyAtpopsingletonsizeupdateAtvalueszerofoldgetDualMonoidgetStructMonoidgetTupleMonoidmonoidAllmonoidAnymonoidProductmonoidStringmonoidSummonoidVoidNilNilableURI[UNSUPPORTED]ApplicativeApplyChainconstNilfoldfromPredicateFunctorgetOrElsegetShowisNilisNotNilmakeMonadnilsequenceStructsequenceTupletoNulltoUndefinedtryCatchNoneOptionSomeURI[UNSUPPORTED]AltAlternativeApplicativeApplyChainconstNoneexistsExtendsFilterablefoldFoldablefromNullablefromPredicateFunctorgetMonoidgetOrdgetOrElsegetSemigroupgetSetoidgetShowisNoneisSomemapNullableMonadMonadThrownonePlussequenceStructsequenceTuplesometoNulltoUndefinedTraversabletryCatchCompareOrderingbetweenclampcompareeqgetOrdUtilitiesgtgteltltemaxminordBooleanordNumberordStringReaderEitherURI[UNSUPPORTED]AltApplicativeApplyaskasksBifunctorChainchainLeftcomposefromEitherFunctorleftMonadMonadThrowrighttryCatchwidenReadonlyRecordURI_assign_map_reduce[UNSUPPORTED]deleteAtFoldableFunctorgetShowIndexedFoldableIndexedFunctorIndexedTraversableinsertAtkeysomitpickTraversablezipFirstConcatFreeOffoldgetDualSemigroupgetFirstSemigroupgetFreeSemigroupgetJoinSemigroupgetLastSemigroupgetMeetSemigroupgetStructSemigroupgetTupleSemigroupsemigroupAllsemigroupAnysemigroupProductsemigroupStringsemigroupSumsemigroupVoidURI[UNSUPPORTED]ApplycompactelemelemOfemptyeveryFilterableFoldableFunctorgetSetoidgetShowgetUnionMonoidintersectionisSubsetjoinmakesomeTraversableunionzerofromEqualsgetStructSetoidgetTupleSetoidsetoidBooleansetoidDatesetoidNumbersetoidStrictsetoidStringStateURI[UNSUPPORTED]ApplicativeApplyChainevaluateexecuteFunctorgetgetsmakemodifyMonadputTaskURI[UNSUPPORTED]ApplicativeApplyApplySeqChaindelayfromThunkFunctormakeMonadMonadSeqtryCatchTaskEitherURI[UNSUPPORTED]AltApplicativeApplicativeSeqApplyApplySeqBifunctorChainchainLeftChainSeqfromEitherfromFailableTaskFunctorleftMonadMonadSeqMonadThrowMonadThrowSeqrightthentryCatchwidenBothLeftRightTheseURI[UNSUPPORTED]BifunctorbothfoldFoldableFunctorgetSemigroupgetShowisBothisLeftisRightleftrightTraversableForestTreeURI[UNSUPPORTED]ApplicativeApplyChaindrawForestdrawTreefoldFunctorgetShowmakeMonadTraversable
affect.ts
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array.ts
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const.ts
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datum.ts
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either.ts
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fns.ts
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io.ts
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io_either.ts
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map.ts
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monoid.ts
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nilable.ts
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option.ts
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ord.ts
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reader_either.ts
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record.ts
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semigroup.ts
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set.ts
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setoid.ts
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state.ts
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task.ts
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task_either.ts
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these.ts
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tree.ts
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