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Просмотр файла: IOOption.js
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.tapIO = exports.tapEither = exports.tap = exports.FromIO = exports.FromEither = exports.Chain = exports.Applicative = exports.apSecond = exports.apFirst = exports.Apply = exports.Pointed = exports.flap = exports.asUnit = exports.as = exports.Functor = exports.URI = exports.partitionMap = exports.partition = exports.filterMap = exports.filter = exports.separate = exports.compact = exports.none = exports.zero = exports.altW = exports.alt = exports.flatten = exports.flatMap = exports.of = exports.ap = exports.map = exports.fromOptionK = exports.chainNullableK = exports.fromNullableK = exports.fromNullable = exports.toNullable = exports.toUndefined = exports.getOrElseW = exports.getOrElse = exports.matchEW = exports.fold = exports.matchE = exports.matchW = exports.match = exports.fromIOEither = exports.fromIO = exports.fromEither = exports.fromOption = exports.fromPredicate = exports.some = void 0;
exports.chainFirst = exports.chain = exports.traverseReadonlyArrayWithIndex = exports.traverseReadonlyNonEmptyArrayWithIndex = exports.ApT = exports.apS = exports.bind = exports.let = exports.bindTo = exports.Do = exports.chainOptionK = exports.chainFirstEitherK = exports.chainEitherK = exports.fromEitherK = exports.chainFirstIOK = exports.chainIOK = exports.fromIOK = exports.flatMapNullable = exports.flatMapEither = exports.flatMapOption = exports.flatMapIO = exports.Filterable = exports.Compactable = exports.MonadIO = exports.Monad = exports.Alternative = exports.guard = exports.Zero = exports.Alt = void 0;
var Apply_1 = require("./Apply");
var chainable = __importStar(require("./Chain"));
var Compactable_1 = require("./Compactable");
var Filterable_1 = require("./Filterable");
var FromEither_1 = require("./FromEither");
var FromIO_1 = require("./FromIO");
var function_1 = require("./function");
var Functor_1 = require("./Functor");
var _ = __importStar(require("./internal"));
var I = __importStar(require("./IO"));
var O = __importStar(require("./Option"));
var OT = __importStar(require("./OptionT"));
var Zero_1 = require("./Zero");
// -------------------------------------------------------------------------------------
// constructors
// -------------------------------------------------------------------------------------
/**
* @category constructors
* @since 2.12.0
*/
exports.some = OT.some(I.Pointed);
/**
* @category lifting
* @since 2.12.0
*/
exports.fromPredicate = OT.fromPredicate(I.Pointed);
// -------------------------------------------------------------------------------------
// conversions
// -------------------------------------------------------------------------------------
/**
* @category conversions
* @since 2.12.0
*/
exports.fromOption = I.of;
/**
* @category conversions
* @since 2.12.0
*/
exports.fromEither = OT.fromEither(I.Pointed);
/**
* @category conversions
* @since 2.12.0
*/
exports.fromIO = OT.fromF(I.Functor);
/**
* @category conversions
* @since 2.12.0
*/
exports.fromIOEither = I.map(O.fromEither);
/**
* @category pattern matching
* @since 2.12.0
*/
exports.match = OT.match(I.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 2.12.0
*/
exports.matchW = exports.match;
/**
* The `E` suffix (short for **E**ffect) means that the handlers return an effect (`IO`).
*
* @category pattern matching
* @since 2.12.0
*/
exports.matchE =
/*#__PURE__*/ OT.matchE(I.Chain);
/**
* Alias of [`matchE`](#matche).
*
* @category pattern matching
* @since 2.12.0
*/
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 2.12.0
*/
exports.matchEW = exports.matchE;
/**
* @category error handling
* @since 2.12.0
*/
exports.getOrElse = OT.getOrElse(I.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 2.12.0
*/
exports.getOrElseW = exports.getOrElse;
/**
* @category conversions
* @since 2.12.0
*/
exports.toUndefined = I.map(O.toUndefined);
/**
* @category conversions
* @since 2.12.0
*/
exports.toNullable = I.map(O.toNullable);
/**
* @category conversions
* @since 2.12.0
*/
exports.fromNullable = OT.fromNullable(I.Pointed);
/**
* @category lifting
* @since 2.12.0
*/
exports.fromNullableK = OT.fromNullableK(I.Pointed);
/**
* Alias of `flatMapNullable`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainNullableK = OT.chainNullableK(I.Monad);
// -------------------------------------------------------------------------------------
// combinators
// -------------------------------------------------------------------------------------
/**
* @category lifting
* @since 2.12.0
*/
exports.fromOptionK =
/*#__PURE__*/ OT.fromOptionK(I.Pointed);
/**
* `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 2.12.0
*/
exports.map = OT.map(I.Functor);
/**
* @since 2.12.0
*/
exports.ap = OT.ap(I.Apply);
/**
* @category constructors
* @since 2.12.0
*/
exports.of = exports.some;
/**
* @category sequencing
* @since 2.14.0
*/
exports.flatMap = (0, function_1.dual)(2, OT.flatMap(I.Monad));
/**
* @category sequencing
* @since 2.12.0
*/
exports.flatten = (0, exports.flatMap)(function_1.identity);
/**
* @category error handling
* @since 2.12.0
*/
exports.alt = OT.alt(I.Monad);
/**
* Less strict version of [`alt`](#alt).
*
* The `W` suffix (short for **W**idening) means that the return types will be merged.
*
* @category error handling
* @since 2.12.0
*/
exports.altW = exports.alt;
/**
* @since 2.12.0
*/
exports.zero = OT.zero(I.Pointed);
/**
* @category constructors
* @since 2.12.0
*/
exports.none = (0, exports.zero)();
/**
* @category filtering
* @since 2.12.0
*/
exports.compact = (0, Compactable_1.compact)(I.Functor, O.Compactable);
/**
* @category filtering
* @since 2.12.0
*/
exports.separate = (0, Compactable_1.separate)(I.Functor, O.Compactable, O.Functor);
/**
* @category filtering
* @since 2.12.0
*/
exports.filter = (0, Filterable_1.filter)(I.Functor, O.Filterable);
/**
* @category filtering
* @since 2.12.0
*/
exports.filterMap = (0, Filterable_1.filterMap)(I.Functor, O.Filterable);
/**
* @category filtering
* @since 2.12.0
*/
exports.partition = (0, Filterable_1.partition)(I.Functor, O.Filterable);
/**
* @category filtering
* @since 2.12.0
*/
exports.partitionMap = (0, Filterable_1.partitionMap)(I.Functor, O.Filterable);
// -------------------------------------------------------------------------------------
// instances
// -------------------------------------------------------------------------------------
var _map = function (fa, f) { return (0, function_1.pipe)(fa, (0, exports.map)(f)); };
/* istanbul ignore next */
var _ap = function (fab, fa) { return (0, function_1.pipe)(fab, (0, exports.ap)(fa)); };
/* istanbul ignore next */
var _alt = function (fa, that) { return (0, function_1.pipe)(fa, (0, exports.alt)(that)); };
/* istanbul ignore next */
var _filter = function (fa, predicate) { return (0, function_1.pipe)(fa, (0, exports.filter)(predicate)); };
/* istanbul ignore next */
var _filterMap = function (fa, f) { return (0, function_1.pipe)(fa, (0, exports.filterMap)(f)); };
/* istanbul ignore next */
var _partition = function (fa, predicate) {
return (0, function_1.pipe)(fa, (0, exports.partition)(predicate));
};
/* istanbul ignore next */
var _partitionMap = function (fa, f) { return (0, function_1.pipe)(fa, (0, exports.partitionMap)(f)); };
/**
* @category type lambdas
* @since 2.12.0
*/
exports.URI = 'IOOption';
/**
* @category instances
* @since 2.12.0
*/
exports.Functor = {
URI: exports.URI,
map: _map
};
/**
* Maps the `Some` value of this `IOOption` 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 `Some` value of this `IOOption` to the void constant value.
*
* @category mapping
* @since 2.16.0
*/
exports.asUnit = (0, Functor_1.asUnit)(exports.Functor);
/**
* @category mapping
* @since 2.12.0
*/
exports.flap = (0, Functor_1.flap)(exports.Functor);
/**
* @category instances
* @since 2.12.0
*/
exports.Pointed = {
URI: exports.URI,
of: exports.of
};
/**
* @category instances
* @since 2.12.0
*/
exports.Apply = {
URI: exports.URI,
map: _map,
ap: _ap
};
/**
* Combine two effectful actions, keeping only the result of the first.
*
* @since 2.12.0
*/
exports.apFirst = (0, Apply_1.apFirst)(exports.Apply);
/**
* Combine two effectful actions, keeping only the result of the second.
*
* @since 2.12.0
*/
exports.apSecond = (0, Apply_1.apSecond)(exports.Apply);
/**
* @category instances
* @since 2.12.0
*/
exports.Applicative = {
URI: exports.URI,
map: _map,
ap: _ap,
of: exports.of
};
/**
* @category instances
* @since 2.12.0
*/
exports.Chain = {
URI: exports.URI,
map: _map,
ap: _ap,
chain: exports.flatMap
};
/**
* @category instances
* @since 2.12.0
*/
exports.FromEither = {
URI: exports.URI,
fromEither: exports.fromEither
};
/**
* @category instances
* @since 2.12.0
*/
exports.FromIO = {
URI: exports.URI,
fromIO: exports.fromIO
};
/**
* 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 { pipe } from 'fp-ts/function'
* import * as IOO from 'fp-ts/IOOption'
* import * as O from 'fp-ts/Option'
* import * as E from 'fp-ts/Either'
*
* const compute = (value: number) => pipe(
* IOO.of(value),
* IOO.tapEither((value) => value > 0 ? E.right('ok') : E.left('error')),
* )
*
* assert.deepStrictEqual(compute(1)(), O.of(1))
* assert.deepStrictEqual(compute(-1)(), O.none)
*
* @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 IOO from 'fp-ts/IOOption'
* import * as O from 'fp-ts/Option'
* import * as Console from 'fp-ts/Console'
*
* // Will produce `Hello, fp-ts` to the stdout
* const effectA = pipe(
* IOO.of('fp-ts'),
* IOO.tapIO((value) => Console.log(`Hello, ${value}`)),
* )
*
* // No output to the stdout
* const effectB = pipe(
* IOO.none as IOO.IOOption<string>,
* IOO.tapIO((value) => Console.log(`Hello, ${value}`)),
* )
*
* async function test() {
* assert.deepStrictEqual(effectA(), O.of('fp-ts'))
* assert.deepStrictEqual(effectB(), O.none)
* }
*
* test()
*
* @category combinators
* @since 2.16.0
*/
exports.tapIO = (0, function_1.dual)(2, (0, FromIO_1.tapIO)(exports.FromIO, exports.Chain));
/**
* @category instances
* @since 2.12.0
*/
exports.Alt = {
URI: exports.URI,
map: _map,
alt: _alt
};
/**
* @category instances
* @since 2.12.0
*/
exports.Zero = {
URI: exports.URI,
zero: exports.zero
};
/**
* @category do notation
* @since 2.12.0
*/
exports.guard = (0, Zero_1.guard)(exports.Zero, exports.Pointed);
/**
* @category instances
* @since 2.12.0
*/
exports.Alternative = {
URI: exports.URI,
map: _map,
ap: _ap,
of: exports.of,
alt: _alt,
zero: exports.zero
};
/**
* @category instances
* @since 2.12.0
*/
exports.Monad = {
URI: exports.URI,
map: _map,
ap: _ap,
of: exports.of,
chain: exports.flatMap
};
/**
* @category instances
* @since 2.12.0
*/
exports.MonadIO = {
URI: exports.URI,
map: _map,
ap: _ap,
of: exports.of,
chain: exports.flatMap,
fromIO: exports.fromIO
};
/**
* @category instances
* @since 2.12.0
*/
exports.Compactable = {
URI: exports.URI,
compact: exports.compact,
separate: exports.separate
};
/**
* @category instances
* @since 2.12.0
*/
exports.Filterable = {
URI: exports.URI,
map: _map,
compact: exports.compact,
separate: exports.separate,
filter: _filter,
filterMap: _filterMap,
partition: _partition,
partitionMap: _partitionMap
};
/** @internal */
var _FlatMap = {
flatMap: exports.flatMap
};
/** @internal */
var _FromIO = {
fromIO: exports.FromIO.fromIO
};
/** @internal */
var _FromEither = {
fromEither: exports.fromEither
};
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapIO = _.flatMapIO(_FromIO, _FlatMap);
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapOption = (0, function_1.dual)(2, function (self, f) { return (0, exports.flatMap)(self, (0, exports.fromOptionK)(f)); });
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapEither = _.flatMapEither(_FromEither, _FlatMap);
/**
* @category sequencing
* @since 2.16.0
*/
exports.flatMapNullable = (0, function_1.dual)(2, function (self, f) { return (0, exports.flatMap)(self, (0, exports.fromNullableK)(f)); });
/**
* @category lifting
* @since 2.12.0
*/
exports.fromIOK =
/*#__PURE__*/ (0, FromIO_1.fromIOK)(exports.FromIO);
/**
* Alias of `flatMapIO`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainIOK = exports.flatMapIO;
/**
* Alias of `tapIO`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainFirstIOK = exports.tapIO;
/**
* @category lifting
* @since 2.12.0
*/
exports.fromEitherK = (0, FromEither_1.fromEitherK)(exports.FromEither);
/**
* Alias of `flatMapEither`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainEitherK = exports.flatMapEither;
/**
* Alias of `tapEither`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainFirstEitherK = exports.tapEither;
/**
* Alias of `flatMapOption`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainOptionK = exports.flatMapOption;
// -------------------------------------------------------------------------------------
// do notation
// -------------------------------------------------------------------------------------
/**
* @category do notation
* @since 2.12.0
*/
exports.Do = (0, exports.of)(_.emptyRecord);
/**
* @category do notation
* @since 2.12.0
*/
exports.bindTo = (0, Functor_1.bindTo)(exports.Functor);
var let_ = /*#__PURE__*/ (0, Functor_1.let)(exports.Functor);
exports.let = let_;
/**
* @category do notation
* @since 2.12.0
*/
exports.bind = chainable.bind(exports.Chain);
/**
* @category do notation
* @since 2.12.0
*/
exports.apS = (0, Apply_1.apS)(exports.Apply);
/**
* @since 2.12.0
*/
exports.ApT = (0, exports.of)(_.emptyReadonlyArray);
// -------------------------------------------------------------------------------------
// array utils
// -------------------------------------------------------------------------------------
/**
* Equivalent to `ReadonlyNonEmptyArray#traverseWithIndex(Applicative)`.
*
* @category traversing
* @since 2.12.0
*/
var traverseReadonlyNonEmptyArrayWithIndex = function (f) {
return (0, function_1.flow)(I.traverseReadonlyNonEmptyArrayWithIndex(f), I.map(O.traverseReadonlyNonEmptyArrayWithIndex(function_1.SK)));
};
exports.traverseReadonlyNonEmptyArrayWithIndex = traverseReadonlyNonEmptyArrayWithIndex;
/**
* Equivalent to `ReadonlyArray#traverseWithIndex(Applicative)`.
*
* @category traversing
* @since 2.12.0
*/
var traverseReadonlyArrayWithIndex = function (f) {
var g = (0, exports.traverseReadonlyNonEmptyArrayWithIndex)(f);
return function (as) { return (_.isNonEmpty(as) ? g(as) : exports.ApT); };
};
exports.traverseReadonlyArrayWithIndex = traverseReadonlyArrayWithIndex;
// -------------------------------------------------------------------------------------
// legacy
// -------------------------------------------------------------------------------------
/**
* Alias of `flatMap`.
*
* @category legacy
* @since 2.12.0
*/
exports.chain = exports.flatMap;
/**
* Alias of `tap`.
*
* @category legacy
* @since 2.12.0
*/
exports.chainFirst = exports.tap;
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