riasfp

Functional programming library integrated with immutable.js

Provides Result and Option monads and unit const based on record type

Result:

import { ok, error } from 'riasfp'

ok(1); // Ok(1)
ok(undefined); //Error exception
ok(null); //Error exception

error('some value'); // Error('some value')
error(undefined); //Error exception
error(null); //Error exception

methods:
.map(function(okValue) {...})
.bind(function(okValue) {...})
.tee(function(okValue) {...})
.match({ok: function(okValue) {...}, error: function(errorValue) {...}) .mapError(function(errorValue) {...})
.bindError(function(errorValue) {...})
.teeError(function(errorValue) {...})
.isOk()
.isError()
.toString()

Option:

import { some, none } from 'riasfp'

none; //None

some(1); //Some(1)
some(undefined); //Error exception
some(null); //Error exception

option(1); //Some(1)
option(undefined); //none
option(null); //none

methods:
.map(function(okValue) {...})
.bind(function(okValue) {...})
.tee(function(okValue) {...})
.match({some: function(value) {...}, none: function() {...})
.isOk()
.isError()

Unit:

import { unit } from 'riasfp'

unit; //Unit