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.

Zero cost Option type for AssemblyScript

Well-typed functional Maybe monad

Nullable type and helper functions for typescript

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

Just function to predicate non nullable with type guard.

Check if a value is property accessible

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

not nil map - Map a function over nullable value

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

maybe use maaybe

Nullish helper functions and types for TypeScript.

@IsNullable validator for class-validator

Tri-state logic for javascript

plain implementation of Maybe (Optional, Nullable) monad

TypeScript maybe monad for reaching child fields inside complicated objects.

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

Typescript version of fsharps Option module

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

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

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

nullable wrapper for javascript type

Optional implementation in Typescript

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

A stateless implementation of the maybe monad

Create null safe property accessible Object library for JavaScript

TypeScript utility types

safe map using sanctuary.js

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

Optionals for JS

A Java-like Optional implementation for JavaScript

Simple typings for nullables

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

utility functions with Nullable

Replace nullable object's properties with optional

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

Simple type to allow value to be nullable