import {Identity} from 'monad-ts/src/identity.js'

public class | source

Identity

Monad → Identity

Class Identity - wraps underlying value into the monadic value and compute results from a monadic value.

Constructor Summary

Public Constructor
public	constructor(v: any) Creates an instance of class Identity.

Public Members
public	err: ErrorM The instance of ErrorM.
public	v: any Keeps underlying value of a monad.

Public Methods
public	bind(f: MF<T, U>, v: any): Pr<U> \| Error Chains the operations on a monadic value.

From class Monad
public abstract	bind(f: MF<T, U>\|D<T>, v: *): Promise<U> \| Pr<U> \| Error \| boolean \| void Binds transformation function and underlying value to the monad.
protected	fail(e: Error \| string): Error Takes Error or string return Error.
protected	just(f: function(v: T), v: T): Pr<U> Produces result after execution f(v).

Creates an instance of class Identity.

Name	Type	Attribute	Description
v	any	optional	The initial state of app.

The instance of ErrorM.

Keeps underlying value of a monad.

Chains the operations on a monadic value.

Name	Type	Attribute	Description
f	MF<T, U>		transformation function for the monad.
v	any	optional default: this.v	underlying value for the monad, it can be null.

Pr<U> | Error