JSPM

A toolkit of Nullable/Option/Result type implementation in ECMAScript. Their APIs are inspired by Rust's `Option<T>` and `Result<T, E>`.

Pure functional utilities for nullable types

Full featured implementation of options into typescript.

Well-typed functional Maybe monad

Nullable type and helper functions for typescript

Zero cost Option type for AssemblyScript

A TypeScript utility library for tri-state checkbox functionality in Angular applications

A lightweight and chainable utility for effortless data type conversation in JavaScript and Node.js

@IsNullable validator for class-validator

This library provides a way to make properties nullable in Angular templates.

Just function to predicate non nullable with type guard.

Tiny (220 bytes), zero dependency wrapper for nullable values

Nullable. Optional. The Maybe monad. Whatever you want to call it, it's for Javascript now.

not nil map - Map a function over nullable value

Check if a value is property accessible

maybe use maaybe

Nullish helper functions and types for TypeScript.

TypeScript utility types

Typescript version of fsharps Option module

A stateless implementation of the maybe monad

Optionals for JS

A plugin for the Elasticsearch JavaScript client that enforces non-nullable fields when indexing

Create null safe property accessible Object library for JavaScript

utility functions with Nullable

A lightweight library for type-safe variable management in JavaScript scopes.

Lightweight, correct type inference, a good helper for covering presets.

Tri-state logic for javascript

plain implementation of Maybe (Optional, Nullable) monad

nullable wrapper for javascript type

A Java-like Optional implementation for JavaScript

A TypeScript implementation of Java's Optional<T>, a container for nullable values with safe handling.

Simple type to allow value to be nullable

safe map using sanctuary.js

Optional implementation in Typescript

Option<T>, Some<T>, None types and runtime functions to safely write JS/TS code without using null and undefined

Replace nullable object's properties with optional

Simple typings for nullables

TypeScript maybe monad for reaching child fields inside complicated objects.

´´´typescript import { Optional } from 'optional-ts';