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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.throwError = exports.of = exports.altW = exports.alt = exports.flatten = exports.flattenW = exports.flatMap = exports.apW = exports.ap = exports.mapLeft = exports.mapError = exports.bimap = exports.mapBoth = exports.map = exports.fromIOEitherK = exports.chainTaskOptionK = exports.chainTaskOptionKW = exports.fromTaskOptionK = exports.swap = exports.orLeft = exports.orElseFirstTaskK = exports.orElseFirstIOK = exports.tapError = exports.orElseW = exports.orElse = exports.chainNullableK = exports.fromNullableK = exports.fromNullable = exports.toUnion = exports.tryCatchK = exports.tryCatch = exports.getOrElseW = exports.getOrElse = exports.foldW = exports.matchEW = exports.fold = exports.matchE = exports.matchW = exports.match = exports.fromTaskOption = exports.fromIOEither = exports.fromEither = exports.fromTask = exports.fromIO = exports.leftIO = exports.rightIO = exports.leftTask = exports.rightTask = exports.right = exports.left = void 0;
exports.fromEitherK = exports.filterOrElseW = exports.filterOrElse = exports.fromPredicate = exports.chainFirstEitherKW = exports.chainFirstEitherK = exports.chainEitherKW = exports.chainEitherK = exports.flatMapTaskOption = exports.flatMapIOEither = exports.flatMapTask = exports.flatMapIO = exports.flatMapEither = exports.flatMapOption = exports.flatMapNullable = exports.liftOption = exports.liftNullable = exports.chainOptionKW = exports.chainOptionK = exports.fromOptionK = exports.fromOption = exports.Alt = exports.Bifunctor = exports.tapTask = exports.tapIO = exports.tapEither = exports.tap = exports.FromTask = exports.FromIO = exports.FromEither = exports.MonadThrow = exports.MonadTask = exports.MonadIO = exports.Monad = exports.Chain = exports.ApplicativeSeq = exports.ApplySeq = exports.ApplicativePar = exports.apSecondW = exports.apSecond = exports.apFirstW = exports.apFirst = exports.ApplyPar = exports.Pointed = exports.flap = exports.asUnit = exports.as = exports.Functor = exports.getCompactable = exports.URI = void 0;
exports.getSemigroup = exports.getApplyMonoid = exports.getApplySemigroup = exports.taskEitherSeq = exports.taskEither = exports.orElseFirstW = exports.orElseFirst = exports.chainFirstW = exports.chainFirst = exports.chainW = exports.chain = exports.sequenceSeqArray = exports.traverseSeqArray = exports.traverseSeqArrayWithIndex = exports.sequenceArray = exports.traverseArray = exports.traverseArrayWithIndex = exports.traverseReadonlyArrayWithIndexSeq = exports.traverseReadonlyNonEmptyArrayWithIndexSeq = exports.traverseReadonlyArrayWithIndex = exports.traverseReadonlyNonEmptyArrayWithIndex = exports.ApT = exports.apSW = exports.apS = exports.bindW = exports.bind = exports.let = exports.bindTo = exports.Do = exports.bracketW = exports.bracket = exports.chainIOEitherK = exports.chainIOEitherKW = exports.chainFirstTaskK = exports.chainTaskK = exports.fromTaskK = exports.chainFirstIOK = exports.chainIOK = exports.fromIOK = void 0;
exports.getApplicativeTaskValidation = getApplicativeTaskValidation;
exports.getAltTaskValidation = getAltTaskValidation;
exports.getFilterable = getFilterable;
exports.taskify = taskify;
exports.getTaskValidation = getTaskValidation;
var Applicative_1 = require("./Applicative");
var Apply_1 = require("./Apply");
var chainable = __importStar(require("./Chain"));
var Compactable_1 = require("./Compactable");
var E = __importStar(require("./Either"));
var ET = __importStar(require("./EitherT"));
var Filterable_1 = require("./Filterable");
var FromEither_1 = require("./FromEither");
var FromIO_1 = require("./FromIO");
var FromTask_1 = require("./FromTask");
var function_1 = require("./function");
var Functor_1 = require("./Functor");
var _ = __importStar(require("./internal"));
var T = __importStar(require("./Task"));
// -------------------------------------------------------------------------------------
// constructors
// -------------------------------------------------------------------------------------
/**
* @category constructors
* @since 2.0.0
*/
exports.left = ET.left(T.Pointed);
/**
* @category constructors
* @since 2.0.0
*/
exports.right = ET.right(T.Pointed);
/**
* @category constructors
* @since 2.0.0
*/
exports.rightTask = ET.rightF(T.Functor);
/**
* @category constructors
* @since 2.0.0
*/
exports.leftTask = ET.leftF(T.Functor);
/**
* @category constructors
* @since 2.0.0
*/
exports.rightIO = (0, function_1.flow)(T.fromIO, exports.rightTask);
/**
* @category constructors
* @since 2.0.0
*/
exports.leftIO = (0, function_1.flow)(T.fromIO, exports.leftTask);
// -------------------------------------------------------------------------------------
// conversions
// -------------------------------------------------------------------------------------
/**
* @category conversions
* @since 2.7.0
*/
exports.fromIO = exports.rightIO;
/**
* @category conversions
* @since 2.7.0
*/
exports.fromTask = exports.rightTask;
/**
* @category conversions
* @since 2.0.0
*/
exports.fromEither = T.of;
/**
* @category conversions
* @since 2.0.0
*/
exports.fromIOEither = T.fromIO;
/**
* @category conversions
* @since 2.11.0
*/
var fromTaskOption = function (onNone) {
return T.map(E.fromOption(onNone));
};
exports.fromTaskOption = fromTaskOption;
/**
* @category pattern matching
* @since 2.10.0
*/
exports.match =
/*#__PURE__*/ ET.match(T.Functor);
/**
* Less strict version of [`match`](#match).
*
* The `W` suffix (short for **W**idening) means that the handler return types will be merged.
*
* @category pattern matching
* @since 2.10.0
*/
exports.matchW = exports.match;
/**
* The `E` suffix (short for **E**ffect) means that the handlers return an effect (`Task`).
*
* @category pattern matching
* @since 2.10.0
*/
exports.matchE = ET.matchE(T.Monad);
/**
* Alias of [`matchE`](#matche).
*
* @category pattern matching
* @since 2.0.0
*/
exports.fold = exports.matchE;
/**
* Less strict version of [`matchE`](#matche).
*
* The `W` suffix (short for **W**idening) means that the handler return types will be merged.
*
* @category pattern matching
* @since 2.10.0
*/
exports.matchEW = exports.matchE;
/**
* Alias of [`matchEW`](#matchew).
*
* @category pattern matching
* @since 2.10.0
*/
exports.foldW = exports.matchEW;
/**
* @category error handling
* @since 2.0.0
*/
exports.getOrElse =
/*#__PURE__*/ ET.getOrElse(T.Monad);
/**
* Less strict version of [`getOrElse`](#getorelse).
*
* The `W` suffix (short for **W**idening) means that the handler return type will be merged.
*
* @category error handling
* @since 2.6.0
*/
exports.getOrElseW = exports.getOrElse;
/**
* Transforms a `Promise` that may reject to a `Promise` that never rejects and returns an `Either` instead.
*
* See also [`tryCatchK`](#trycatchk).
*
* @example
* import { left, right } from 'fp-ts/Either'
* import { tryCatch } from 'fp-ts/TaskEither'
*
* tryCatch(() => Promise.resolve(1), String)().then(result => {
* assert.deepStrictEqual(result, right(1))
* })
* tryCatch(() => Promise.reject('error'), String)().then(result => {
* assert.deepStrictEqual(result, left('error'))
* })
*
* @category interop
* @since 2.0.0
*/
var tryCatch = function (f, onRejected) {
return function () { return __awaiter(void 0, void 0, void 0, function () {
var reason_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, f().then(_.right)];
case 1: return [2 /*return*/, _a.sent()];
case 2:
reason_1 = _a.sent();
return [2 /*return*/, _.left(onRejected(reason_1))];
case 3: return [2 /*return*/];
}
});
}); };
};
exports.tryCatch = tryCatch;
/**
* Converts a function returning a `Promise` to one returning a `TaskEither`.
*
* @category interop
* @since 2.5.0
*/
var tryCatchK = function (f, onRejected) {
return function () {
var a = [];
for (var _i = 0; _i < arguments.length; _i++) {
a[_i] = arguments[_i];
}
return (0, exports.tryCatch)(function () { return f.apply(void 0, a); }, onRejected);
};
};
exports.tryCatchK = tryCatchK;
/**
* @category conversions
* @since 2.10.0
*/
exports.toUnion = ET.toUnion(T.Functor);
/**
* @category conversions
* @since 2.12.0
*/
exports.fromNullable = ET.fromNullable(T.Pointed);
/**
* Use `liftNullable`.
*
* @category legacy
* @since 2.12.0
*/
exports.fromNullableK = ET.fromNullableK(T.Pointed);
/**
* Use `flatMapNullable`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainNullableK =
/*#__PURE__*/ ET.chainNullableK(T.Monad);
// -------------------------------------------------------------------------------------
// combinators
// -------------------------------------------------------------------------------------
/**
* Returns `ma` if is a `Right` or the value returned by `onLeft` otherwise.
*
* See also [alt](#alt).
*
* @example
* import * as E from 'fp-ts/Either'
* import { pipe } from 'fp-ts/function'
* import * as TE from 'fp-ts/TaskEither'
*
* async function test() {
* const errorHandler = TE.orElse((error: string) => TE.right(`recovering from ${error}...`))
* assert.deepStrictEqual(await pipe(TE.right('ok'), errorHandler)(), E.right('ok'))
* assert.deepStrictEqual(await pipe(TE.left('ko'), errorHandler)(), E.right('recovering from ko...'))
* }
*
* test()
*
* @category error handling
* @since 2.0.0
*/
exports.orElse =
/*#__PURE__*/ ET.orElse(T.Monad);
/**
* Less strict version of [`orElse`](#orelse).
*
* The `W` suffix (short for **W**idening) means that the return types will be merged.
*
* @category error handling
* @since 2.10.0
*/
exports.orElseW = exports.orElse;
/**
* Returns an effect that effectfully "peeks" at the failure of this effect.
*
* @category error handling
* @since 2.15.0
*/
exports.tapError = (0, function_1.dual)(2, ET.tapError(T.Monad));
/**
* @category error handling
* @since 2.12.0
*/
var orElseFirstIOK = function (onLeft) { return (0, exports.tapError)((0, exports.fromIOK)(onLeft)); };
exports.orElseFirstIOK = orElseFirstIOK;
/**
* @category error handling
* @since 2.12.0
*/
var orElseFirstTaskK = function (onLeft) { return (0, exports.tapError)((0, exports.fromTaskK)(onLeft)); };
exports.orElseFirstTaskK = orElseFirstTaskK;
/**
* @category error handling
* @since 2.11.0
*/
exports.orLeft =
/*#__PURE__*/ ET.orLeft(T.Monad);
/**
* @since 2.0.0
*/
exports.swap = ET.swap(T.Functor);
/**
* @category lifting
* @since 2.11.0
*/
var fromTaskOptionK = function (onNone) {
var from = (0, exports.fromTaskOption)(onNone);
return function (f) { return (0, function_1.flow)(f, from); };
};
exports.fromTaskOptionK = fromTaskOptionK;
/**
* Use `flatMapTaskOption`.
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category legacy
* @since 2.12.3
*/
var chainTaskOptionKW = function (onNone) {
return function (f) {
return function (ma) {
return (0, exports.flatMap)(ma, (0, exports.fromTaskOptionK)(onNone)(f));
};
};
};
exports.chainTaskOptionKW = chainTaskOptionKW;
/**
* Use `flatMapTaskOption`.
*
* @category legacy
* @since 2.11.0
*/
exports.chainTaskOptionK = exports.chainTaskOptionKW;
/**
* @category lifting
* @since 2.4.0
*/
var fromIOEitherK = function (f) { return (0, function_1.flow)(f, exports.fromIOEither); };
exports.fromIOEitherK = fromIOEitherK;
var _map = function (fa, f) { return (0, function_1.pipe)(fa, (0, exports.map)(f)); };
var _apPar = function (fab, fa) { return (0, function_1.pipe)(fab, (0, exports.ap)(fa)); };
var _apSeq = function (fab, fa) { return (0, exports.flatMap)(fab, function (f) { return (0, function_1.pipe)(fa, (0, exports.map)(f)); }); };
/* istanbul ignore next */
var _alt = function (fa, that) { return (0, function_1.pipe)(fa, (0, exports.alt)(that)); };
/**
* `map` can be used to turn functions `(a: A) => B` into functions `(fa: F<A>) => F<B>` whose argument and return types
* use the type constructor `F` to represent some computational context.
*
* @category mapping
* @since 2.0.0
*/
exports.map = ET.map(T.Functor);
/**
* Returns a `TaskEither` whose failure and success channels have been mapped by the specified pair of functions, `f` and `g`.
*
* @example
* import * as TaskEither from 'fp-ts/TaskEither'
* import * as Either from 'fp-ts/Either'
*
* const f = (s: string) => new Error(s)
* const g = (n: number) => n * 2
*
* async function test() {
* assert.deepStrictEqual(await TaskEither.mapBoth(TaskEither.right(1), f, g)(), Either.right(2))
* assert.deepStrictEqual(await TaskEither.mapBoth(TaskEither.left('err'), f, g)(), Either.left(new Error('err')))
* }
*
* test()
*
* @category error handling
* @since 2.16.0
*/
exports.mapBoth = (0, function_1.dual)(3, ET.mapBoth(T.Functor));
/**
* Alias of `mapBoth`.
*
* @category legacy
* @since 2.0.0
*/
exports.bimap = exports.mapBoth;
/**
* Returns a `TaskEither` with its error channel mapped using the specified function.
*
* @example
* import * as TaskEither from 'fp-ts/TaskEither'
* import * as Either from 'fp-ts/Either'
*
* const f = (s: string) => new Error(s)
*
* async function test() {
* assert.deepStrictEqual(await TaskEither.mapError(TaskEither.right(1), f)(), Either.right(1))
* assert.deepStrictEqual(await TaskEither.mapError(TaskEither.left('err'), f)(), Either.left(new Error('err')))
* }
*
* test()
*
* @category error handling
* @since 2.16.0
*/
exports.mapError = (0, function_1.dual)(2, ET.mapError(T.Functor));
/**
* Alias of `mapError`.
*
* @category legacy
* @since 2.0.0
*/
exports.mapLeft = exports.mapError;
/**
* @since 2.0.0
*/
exports.ap =
/*#__PURE__*/ ET.ap(T.ApplyPar);
/**
* Less strict version of [`ap`](#ap).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @since 2.8.0
*/
exports.apW = exports.ap;
/**
* @category sequencing
* @since 2.14.0
*/
exports.flatMap = (0, function_1.dual)(2, ET.flatMap(T.Monad));
/**
* Less strict version of [`flatten`](#flatten).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category sequencing
* @since 2.11.0
*/
exports.flattenW =
/*#__PURE__*/ (0, exports.flatMap)(function_1.identity);
/**
* @category sequencing
* @since 2.0.0
*/
exports.flatten = exports.flattenW;
/**
* Identifies an associative operation on a type constructor. It is similar to `Semigroup`, except that it applies to
* types of kind `* -> *`.
*
* In case of `TaskEither` returns `fa` if is a `Right` or the value returned by `that` otherwise.
*
* See also [orElse](#orelse).
*
* @example
* import * as E from 'fp-ts/Either'
* import { pipe } from 'fp-ts/function'
* import * as TE from 'fp-ts/TaskEither'
*
* async function test() {
* assert.deepStrictEqual(
* await pipe(
* TE.right(1),
* TE.alt(() => TE.right(2))
* )(),
* E.right(1)
* )
* assert.deepStrictEqual(
* await pipe(
* TE.left('a'),
* TE.alt(() => TE.right(2))
* )(),
* E.right(2)
* )
* assert.deepStrictEqual(
* await pipe(
* TE.left('a'),
* TE.alt(() => TE.left('b'))
* )(),
* E.left('b')
* )
* }
*
* test()
*
* @category error handling
* @since 2.0.0
*/
exports.alt =
/*#__PURE__*/ ET.alt(T.Monad);
/**
* Less strict version of [`alt`](#alt).
*
* The `W` suffix (short for **W**idening) means that the error and the return types will be merged.
*
* @category error handling
* @since 2.9.0
*/
exports.altW = exports.alt;
/**
* @category constructors
* @since 2.0.0
*/
exports.of = exports.right;
/**
* @since 2.7.0
*/
exports.throwError = exports.left;
/**
* @category type lambdas
* @since 2.0.0
*/
exports.URI = 'TaskEither';
/**
* The default [`ApplicativePar`](#applicativepar) instance returns the first error, if you want to
* get all errors you need to provide a way to concatenate them via a `Semigroup`.
*
* @example
* import * as E from 'fp-ts/Either'
* import { pipe } from 'fp-ts/function'
* import * as RA from 'fp-ts/ReadonlyArray'
* import * as S from 'fp-ts/Semigroup'
* import * as string from 'fp-ts/string'
* import * as T from 'fp-ts/Task'
* import * as TE from 'fp-ts/TaskEither'
*
* interface User {
* readonly id: string
* readonly name: string
* }
*
* const remoteDatabase: ReadonlyArray<User> = [
* { id: 'id1', name: 'John' },
* { id: 'id2', name: 'Mary' },
* { id: 'id3', name: 'Joey' }
* ]
*
* const fetchUser = (id: string): TE.TaskEither<string, User> =>
* pipe(
* remoteDatabase,
* RA.findFirst((user) => user.id === id),
* TE.fromOption(() => `${id} not found`)
* )
*
* async function test() {
* assert.deepStrictEqual(
* await pipe(['id4', 'id5'], RA.traverse(TE.ApplicativePar)(fetchUser))(),
* E.left('id4 not found') // <= first error
* )
*
* const Applicative = TE.getApplicativeTaskValidation(
* T.ApplyPar,
* pipe(string.Semigroup, S.intercalate(', '))
* )
*
* assert.deepStrictEqual(
* await pipe(['id4', 'id5'], RA.traverse(Applicative)(fetchUser))(),
* E.left('id4 not found, id5 not found') // <= all errors
* )
* }
*
* test()
*
* @category error handling
* @since 2.7.0
*/
function getApplicativeTaskValidation(A, S) {
var ap = (0, Apply_1.ap)(A, E.getApplicativeValidation(S));
return {
URI: exports.URI,
_E: undefined,
map: _map,
ap: function (fab, fa) { return (0, function_1.pipe)(fab, ap(fa)); },
of: exports.of
};
}
/**
* The default [`Alt`](#alt) instance returns the last error, if you want to
* get all errors you need to provide a way to concatenate them via a `Semigroup`.
*
* See [`getAltValidation`](./Either.ts.html#getaltvalidation).
*
* @category error handling
* @since 2.7.0
*/
function getAltTaskValidation(S) {
var alt = ET.altValidation(T.Monad, S);
return {
URI: exports.URI,
_E: undefined,
map: _map,
alt: function (fa, that) { return (0, function_1.pipe)(fa, alt(that)); }
};
}
/**
* @category filtering
* @since 2.10.0
*/
var getCompactable = function (M) {
var C = E.getCompactable(M);
return {
URI: exports.URI,
_E: undefined,
compact: (0, Compactable_1.compact)(T.Functor, C),
separate: (0, Compactable_1.separate)(T.Functor, C, E.Functor)
};
};
exports.getCompactable = getCompactable;
/**
* @category filtering
* @since 2.1.0
*/
function getFilterable(M) {
var F = E.getFilterable(M);
var C = (0, exports.getCompactable)(M);
var filter = (0, Filterable_1.filter)(T.Functor, F);
var filterMap = (0, Filterable_1.filterMap)(T.Functor, F);
var partition = (0, Filterable_1.partition)(T.Functor, F);
var partitionMap = (0, Filterable_1.partitionMap)(T.Functor, F);
return {
URI: exports.URI,
_E: undefined,
map: _map,
compact: C.compact,
separate: C.separate,
filter: function (fa, predicate) { return (0, function_1.pipe)(fa, filter(predicate)); },
filterMap: function (fa, f) { return (0, function_1.pipe)(fa, filterMap(f)); },
partition: function (fa, predicate) { return (0, function_1.pipe)(fa, partition(predicate)); },
partitionMap: function (fa, f) { return (0, function_1.pipe)(fa, partitionMap(f)); }
};
}
/**
* @category instances
* @since 2.7.0
*/
exports.Functor = {
URI: exports.URI,
map: _map
};
/**
* Maps the `Right` value of this `TaskEither` to the specified constant value.
*
* @category mapping
* @since 2.16.0
*/
exports.as = (0, function_1.dual)(2, (0, Functor_1.as)(exports.Functor));
/**
* Maps the `Right` value of this `TaskEither` to the void constant value.
*
* @category mapping
* @since 2.16.0
*/
exports.asUnit = (0, Functor_1.asUnit)(exports.Functor);
/**
* @category mapping
* @since 2.10.0
*/
exports.flap = (0, Functor_1.flap)(exports.Functor);
/**
* @category instances
* @since 2.10.0
*/
exports.Pointed = {
URI: exports.URI,
of: exports.of
};
/**
* Runs computations in parallel.
*
* @category instances
* @since 2.10.0
*/
exports.ApplyPar = {
URI: exports.URI,
map: _map,
ap: _apPar
};
/**
* Combine two effectful actions, keeping only the result of the first.
*
* @since 2.0.0
*/
exports.apFirst = (0, Apply_1.apFirst)(exports.ApplyPar);
/**
* Less strict version of [`apFirst`](#apfirst).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @since 2.12.0
*/
exports.apFirstW = exports.apFirst;
/**
* Combine two effectful actions, keeping only the result of the second.
*
* @since 2.0.0
*/
exports.apSecond = (0, Apply_1.apSecond)(exports.ApplyPar);
/**
* Less strict version of [`apSecond`](#apsecond).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @since 2.12.0
*/
exports.apSecondW = exports.apSecond;
/**
* Runs computations in parallel.
*
* @category instances
* @since 2.7.0
*/
exports.ApplicativePar = {
URI: exports.URI,
map: _map,
ap: _apPar,
of: exports.of
};
/**
* Runs computations sequentially.
*
* @category instances
* @since 2.10.0
*/
exports.ApplySeq = {
URI: exports.URI,
map: _map,
ap: _apSeq
};
/**
* Runs computations sequentially.
*
* @category instances
* @since 2.7.0
*/
exports.ApplicativeSeq = {
URI: exports.URI,
map: _map,
ap: _apSeq,
of: exports.of
};
/**
* @category instances
* @since 2.10.0
*/
exports.Chain = {
URI: exports.URI,
map: _map,
ap: _apPar,
chain: exports.flatMap
};
/**
* @category instances
* @since 2.10.0
*/
exports.Monad = {
URI: exports.URI,
map: _map,
ap: _apPar,
chain: exports.flatMap,
of: exports.of
};
/**
* @category instances
* @since 2.10.0
*/
exports.MonadIO = {
URI: exports.URI,
map: _map,
ap: _apPar,
chain: exports.flatMap,
of: exports.of,
fromIO: exports.fromIO
};
/**
* @category instances
* @since 2.10.0
*/
exports.MonadTask = {
URI: exports.URI,
map: _map,
ap: _apPar,
chain: exports.flatMap,
of: exports.of,
fromIO: exports.fromIO,
fromTask: exports.fromTask
};
/**
* @category instances
* @since 2.10.0
*/
exports.MonadThrow = {
URI: exports.URI,
map: _map,
ap: _apPar,
chain: exports.flatMap,
of: exports.of,
throwError: exports.throwError
};
/**
* @category instances
* @since 2.10.0
*/
exports.FromEither = {
URI: exports.URI,
fromEither: exports.fromEither
};
/**
* @category instances
* @since 2.10.0
*/
exports.FromIO = {
URI: exports.URI,
fromIO: exports.fromIO
};
/**
* @category instances
* @since 2.10.0
*/
exports.FromTask = {
URI: exports.URI,
fromIO: exports.fromIO,
fromTask: exports.fromTask
};
/**
* Composes computations in sequence, using the return value of one computation to determine the next computation and
* keeping only the result of the first.
*
* @category combinators
* @since 2.15.0
*/
exports.tap = (0, function_1.dual)(2, chainable.tap(exports.Chain));
/**
* Composes computations in sequence, using the return value of one computation to determine the next computation and
* keeping only the result of the first.
*
* @example
* import * as E from 'fp-ts/Either'
* import { pipe } from 'fp-ts/function'
* import * as TE from 'fp-ts/TaskEither'
*
* const checkString = (value: string) => pipe(
* TE.of(value),
* TE.tapEither(() => value.length > 0 ? E.right('ok') : E.left('error'))
* )
*
* async function test() {
* assert.deepStrictEqual(await checkString('')(), E.left('error'))
* assert.deepStrictEqual(await checkString('fp-ts')(), E.right('fp-ts'))
* }
*
* test()
*
* @category combinators
* @since 2.16.0
*/
exports.tapEither = (0, function_1.dual)(2, (0, FromEither_1.tapEither)(exports.FromEither, exports.Chain));
/**
* Composes computations in sequence, using the return value of one computation to determine the next computation and
* keeping only the result of the first.
*
* @example
* import { pipe } from 'fp-ts/function'
* import * as TE from 'fp-ts/TaskEither'
* import * as E from 'fp-ts/Either'
* import * as Console from 'fp-ts/Console'
*
*
* // Will produce `Hello, fp-ts` to the stdout
* const effectA = TE.tapIO(
* TE.of(1),
* (value) => Console.log(`Hello, ${value}`)
* )
*
* // No output to the stdout
* const effectB = pipe(
* TE.left('error'),
* TE.tapIO((value) => Console.log(`Hello, ${value}`))
* )
*
* async function test() {
* assert.deepStrictEqual(await effectA(), E.of(1))
* assert.deepStrictEqual(await effectB(), E.left('error'))
* }
*
* test()
*
* @category combinators
* @since 2.16.0
*/
exports.tapIO = (0, function_1.dual)(2, (0, FromIO_1.tapIO)(exports.FromIO, exports.Chain));
/**
* Composes computations in sequence, using the return value of one computation to determine the next computation and
* keeping only the result of the first.
*
* @example
* import * as TE from 'fp-ts/TaskEither'
* import * as T from 'fp-ts/Task'
* import * as E from 'fp-ts/Either'
*
*
* const effect = TE.tapIO(
* TE.of(1),
* (value) => T.of(value + 1)
* )
*
* async function test() {
* assert.deepStrictEqual(await effect(), E.of(1))
* }
*
* test()
*
* @category combinators
* @since 2.16.0
*/
exports.tapTask = (0, function_1.dual)(2, (0, FromTask_1.tapTask)(exports.FromTask, exports.Chain));
/**
* @category instances
* @since 2.7.0
*/
exports.Bifunctor = {
URI: exports.URI,
bimap: exports.mapBoth,
mapLeft: exports.mapError
};
/**
* @category instances
* @since 2.7.0
*/
exports.Alt = {
URI: exports.URI,
map: _map,
alt: _alt
};
/**
* @category conversions
* @since 2.0.0
*/
exports.fromOption =
/*#__PURE__*/ (0, FromEither_1.fromOption)(exports.FromEither);
/**
* Use `liftOption`.
*
* @category legacy
* @since 2.10.0
*/
exports.fromOptionK =
/*#__PURE__*/ (0, FromEither_1.fromOptionK)(exports.FromEither);
/**
* Use `flatMapOption`.
*
* @category legacy
* @since 2.10.0
*/
exports.chainOptionK = (0, FromEither_1.chainOptionK)(exports.FromEither, exports.Chain);
/**
* Use `flatMapOption`.
*
* @category legacy
* @since 2.13.2
*/
exports.chainOptionKW = exports.chainOptionK;
/** @internal */
var _FromEither = {
fromEither: exports.FromEither.fromEither
};
/**
* @category lifting
* @since 2.15.0
*/
exports.liftNullable = _.liftNullable(_FromEither);
/**
* @category lifting
* @since 2.15.0
*/
exports.liftOption = _.liftOption(_FromEither);
/** @internal */
var _FlatMap = {
flatMap: exports.flatMap
};
/** @internal */
var _FromIO = {
fromIO: exports.FromIO.fromIO
};
/** @internal */
var _FromTask = {
fromTask: exports.fromTask
};
/**
* @category sequencing
* @since 2.15.0
*/
exports.flatMapNullable = _.flatMapNullable(_FromEither, _FlatMap);
/**
* @category sequencing
* @since 2.15.0
*/
exports.flatMapOption = _.flatMapOption(_FromEither, _FlatMap);
/**
* @category sequencing
* @since 2.15.0
*/
exports.flatMapEither = _.flatMapEither(_FromEither, _FlatMap);
/**
* @category sequencing
* @since 2.15.0
*/
exports.flatMapIO = _.flatMapIO(_FromIO, _FlatMap);
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapTask = _.flatMapTask(_FromTask, _FlatMap);
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapIOEither = (0, function_1.dual)(2, function (self, f) {
return (0, exports.flatMap)(self, (0, exports.fromIOEitherK)(f));
});
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapTaskOption = (0, function_1.dual)(3, function (self, f, onNone) {
return (0, exports.flatMap)(self, function (a) { return (0, exports.fromTaskOption)(function () { return onNone(a); })(f(a)); });
});
/**
* Alias of `flatMapEither`.
*
* @category legacy
* @since 2.4.0
*/
exports.chainEitherK = exports.flatMapEither;
/**
* Alias of `flatMapEither`.
*
* @category legacy
* @since 2.6.1
*/
exports.chainEitherKW = exports.flatMapEither;
/**
* Alias of `tapEither`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainFirstEitherK = exports.tapEither;
/**
* Alias of `tapEither`.
*
* Less strict version of [`chainFirstEitherK`](#chainfirsteitherk).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category legacy
* @since 2.12.0
*/
exports.chainFirstEitherKW = exports.tapEither;
/**
* @category lifting
* @since 2.0.0
*/
exports.fromPredicate = (0, FromEither_1.fromPredicate)(exports.FromEither);
/**
* @category filtering
* @since 2.0.0
*/
exports.filterOrElse = (0, FromEither_1.filterOrElse)(exports.FromEither, exports.Chain);
/**
* Less strict version of [`filterOrElse`](#filterorelse).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category filtering
* @since 2.9.0
*/
exports.filterOrElseW = exports.filterOrElse;
/**
* @category lifting
* @since 2.4.0
*/
exports.fromEitherK = (0, FromEither_1.fromEitherK)(exports.FromEither);
/**
* @category lifting
* @since 2.10.0
*/
exports.fromIOK = (0, FromIO_1.fromIOK)(exports.FromIO);
/**
* Alias of `flatMapIO`.
*
* @category legacy
* @since 2.10.0
*/
exports.chainIOK = exports.flatMapIO;
/**
* Alias of `tapIO`.
*
* @category legacy
* @since 2.10.0
*/
exports.chainFirstIOK = exports.tapIO;
/**
* @category lifting
* @since 2.10.0
*/
exports.fromTaskK = (0, FromTask_1.fromTaskK)(exports.FromTask);
/**
* Alias of `flatMapTask`.
*
* @category legacy
* @since 2.10.0
*/
exports.chainTaskK = exports.flatMapTask;
/**
* Alias of `tapTask`.
*
* @category legacy
* @since 2.10.0
*/
exports.chainFirstTaskK = exports.tapTask;
/**
* Alias of `flatMapIOEither`.
*
* Less strict version of [`chainIOEitherK`](#chainioeitherk).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category legacy
* @since 2.6.1
*/
exports.chainIOEitherKW = exports.flatMapIOEither;
/**
* Alias of `flatMapIOEither`.
*
* @category legacy
* @since 2.4.0
*/
exports.chainIOEitherK = exports.flatMapIOEither;
function taskify(f) {
return function () {
var args = Array.prototype.slice.call(arguments);
return function () {
return new Promise(function (resolve) {
var cbResolver = function (e, r) { return (e != null ? resolve(_.left(e)) : resolve(_.right(r))); };
f.apply(null, args.concat(cbResolver));
});
};
};
}
/**
* Make sure that a resource is cleaned up in the event of an exception (\*). The release action is called regardless of
* whether the body action throws (\*) or returns.
*
* (\*) i.e. returns a `Left`
*
* @since 2.0.0
*/
var bracket = function (acquire, use, release) { return (0, exports.bracketW)(acquire, use, release); };
exports.bracket = bracket;
/**
* Less strict version of [`bracket`](#bracket).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @since 2.12.0
*/
var bracketW = function (acquire, use, release) {
return (0, exports.flatMap)(acquire, function (a) { return T.flatMap(use(a), function (e) { return (0, exports.flatMap)(release(a, e), function () { return T.of(e); }); }); });
};
exports.bracketW = bracketW;
// -------------------------------------------------------------------------------------
// do notation
// -------------------------------------------------------------------------------------
/**
* @category do notation
* @since 2.9.0
*/
exports.Do = (0, exports.of)(_.emptyRecord);
/**
* @category do notation
* @since 2.8.0
*/
exports.bindTo = (0, Functor_1.bindTo)(exports.Functor);
var let_ = /*#__PURE__*/ (0, Functor_1.let)(exports.Functor);
exports.let = let_;
/**
* @category do notation
* @since 2.8.0
*/
exports.bind = chainable.bind(exports.Chain);
/**
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category do notation
* @since 2.8.0
*/
exports.bindW = exports.bind;
/**
* @category do notation
* @since 2.8.0
*/
exports.apS = (0, Apply_1.apS)(exports.ApplyPar);
/**
* Less strict version of [`apS`](#aps).
*
* The `W` suffix (short for **W**idening) means that the error types will be merged.
*
* @category do notation
* @since 2.8.0
*/
exports.apSW = exports.apS;
/**
* @since 2.11.0
*/
exports.ApT = (0, exports.of)(_.emptyReadonlyArray);
// -------------------------------------------------------------------------------------
// array utils
// -------------------------------------------------------------------------------------
/**
* Equivalent to `ReadonlyNonEmptyArray#traverseWithIndex(ApplicativePar)`.
*
* @category traversing
* @since 2.11.0
*/
var traverseReadonlyNonEmptyArrayWithIndex = function (f) {
return (0, function_1.flow)(T.traverseReadonlyNonEmptyArrayWithIndex(f), T.map(E.traverseReadonlyNonEmptyArrayWithIndex(function_1.SK)));
};
exports.traverseReadonlyNonEmptyArrayWithIndex = traverseReadonlyNonEmptyArrayWithIndex;
/**
* Equivalent to `ReadonlyArray#traverseWithIndex(ApplicativePar)`.
*
* @category traversing
* @since 2.11.0
*/
var traverseReadonlyArrayWithIndex = function (f) {
var g = (0, exports.traverseReadonlyNonEmptyArrayWithIndex)(f);
return function (as) { return (_.isNonEmpty(as) ? g(as) : exports.ApT); };
};
exports.traverseReadonlyArrayWithIndex = traverseReadonlyArrayWithIndex;
/**
* Equivalent to `ReadonlyArray#traverseWithIndex(ApplicativeSeq)`.
*
* @category traversing
* @since 2.11.0
*/
var traverseReadonlyNonEmptyArrayWithIndexSeq = function (f) {
return function (as) {
return function () {
return _.tail(as).reduce(function (acc, a, i) {
return acc.then(function (ebs) {
return _.isLeft(ebs)
? acc
: f(i + 1, a)().then(function (eb) {
if (_.isLeft(eb)) {
return eb;
}
ebs.right.push(eb.right);
return ebs;
});
});
}, f(0, _.head(as))().then(E.map(_.singleton)));
};
};
};
exports.traverseReadonlyNonEmptyArrayWithIndexSeq = traverseReadonlyNonEmptyArrayWithIndexSeq;
/**
* Equivalent to `ReadonlyArray#traverseWithIndex(ApplicativeSeq)`.
*
* @category traversing
* @since 2.11.0
*/
var traverseReadonlyArrayWithIndexSeq = function (f) {
var g = (0, exports.traverseReadonlyNonEmptyArrayWithIndexSeq)(f);
return function (as) { return (_.isNonEmpty(as) ? g(as) : exports.ApT); };
};
exports.traverseReadonlyArrayWithIndexSeq = traverseReadonlyArrayWithIndexSeq;
/**
* Equivalent to `ReadonlyArray#traverseWithIndex(Applicative)`.
*
* @category traversing
* @since 2.9.0
*/
exports.traverseArrayWithIndex = exports.traverseReadonlyArrayWithIndex;
/**
* Equivalent to `ReadonlyArray#traverse(Applicative)`.
*
* @category traversing
* @since 2.9.0
*/
var traverseArray = function (f) { return (0, exports.traverseReadonlyArrayWithIndex)(function (_, a) { return f(a); }); };
exports.traverseArray = traverseArray;
/**
* Equivalent to `ReadonlyArray#sequence(Applicative)`.
*
* @category traversing
* @since 2.9.0
*/
exports.sequenceArray =
/*#__PURE__*/ (0, exports.traverseArray)(function_1.identity);
/**
* Equivalent to `ReadonlyArray#traverseWithIndex(ApplicativeSeq)`.
*
* @category traversing
* @since 2.9.0
*/
exports.traverseSeqArrayWithIndex = exports.traverseReadonlyArrayWithIndexSeq;
/**
* Equivalent to `ReadonlyArray#traverse(ApplicativeSeq)`.
*
* @category traversing
* @since 2.9.0
*/
var traverseSeqArray = function (f) { return (0, exports.traverseReadonlyArrayWithIndexSeq)(function (_, a) { return f(a); }); };
exports.traverseSeqArray = traverseSeqArray;
/**
* Equivalent to `ReadonlyArray#sequence(ApplicativeSeq)`.
*
* @category traversing
* @since 2.9.0
*/
exports.sequenceSeqArray =
/*#__PURE__*/ (0, exports.traverseSeqArray)(function_1.identity);
// -------------------------------------------------------------------------------------
// legacy
// -------------------------------------------------------------------------------------
/**
* Alias of `flatMap`.
*
* @category legacy
* @since 2.0.0
*/
exports.chain = exports.flatMap;
/**
* Alias of `flatMap`.
*
* @category legacy
* @since 2.6.0
*/
exports.chainW = exports.flatMap;
/**
* Alias of `tap`.
*
* @category legacy
* @since 2.0.0
*/
exports.chainFirst = exports.tap;
/**
* Alias of `tap`.
*
* @category legacy
* @since 2.8.0
*/
exports.chainFirstW = exports.tap;
/**
* Alias of `tapError`.
*
* @category legacy
* @since 2.11.0
*/
exports.orElseFirst = exports.tapError;
/**
* Alias of `tapError`.
*
* @category legacy
* @since 2.11.0
*/
exports.orElseFirstW = exports.tapError;
// -------------------------------------------------------------------------------------
// deprecated
// -------------------------------------------------------------------------------------
/**
* This instance is deprecated, use small, specific instances instead.
* For example if a function needs a `Functor` instance, pass `TE.Functor` instead of `TE.taskEither`
* (where `TE` is from `import TE from 'fp-ts/TaskEither'`)
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.taskEither = {
URI: exports.URI,
bimap: exports.mapBoth,
mapLeft: exports.mapError,
map: _map,
of: exports.of,
ap: _apPar,
chain: exports.flatMap,
alt: _alt,
fromIO: exports.fromIO,
fromTask: exports.fromTask,
throwError: exports.throwError
};
/**
* This instance is deprecated, use small, specific instances instead.
* For example if a function needs a `Functor` instance, pass `TE.Functor` instead of `TE.taskEitherSeq`
* (where `TE` is from `import TE from 'fp-ts/TaskEither'`)
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.taskEitherSeq = {
URI: exports.URI,
bimap: exports.mapBoth,
mapLeft: exports.mapError,
map: _map,
of: exports.of,
ap: _apSeq,
chain: exports.flatMap,
alt: _alt,
fromIO: exports.fromIO,
fromTask: exports.fromTask,
throwError: exports.throwError
};
/**
* Use [`getApplySemigroup`](./Apply.ts.html#getapplysemigroup) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getApplySemigroup =
/*#__PURE__*/ (0, Apply_1.getApplySemigroup)(exports.ApplySeq);
/**
* Use [`getApplicativeMonoid`](./Applicative.ts.html#getapplicativemonoid) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getApplyMonoid =
/*#__PURE__*/ (0, Applicative_1.getApplicativeMonoid)(exports.ApplicativeSeq);
/**
* Use [`getApplySemigroup`](./Apply.ts.html#getapplysemigroup) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
var getSemigroup = function (S) {
return (0, Apply_1.getApplySemigroup)(T.ApplySeq)(E.getSemigroup(S));
};
exports.getSemigroup = getSemigroup;
/**
* Use [`getApplicativeTaskValidation`](#getapplicativetaskvalidation) and [`getAltTaskValidation`](#getalttaskvalidation) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
function getTaskValidation(SE) {
var applicativeTaskValidation = getApplicativeTaskValidation(T.ApplicativePar, SE);
var altTaskValidation = getAltTaskValidation(SE);
return {
URI: exports.URI,
_E: undefined,
map: _map,
ap: applicativeTaskValidation.ap,
of: exports.of,
chain: exports.flatMap,
bimap: exports.mapBoth,
mapLeft: exports.mapError,
alt: altTaskValidation.alt,
fromIO: exports.fromIO,
fromTask: exports.fromTask,
throwError: exports.throwError
};
}
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