Nullable Packages

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

@IsNullable validator for class-validator

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

Well-typed functional Maybe monad

not nil map - Map a function over nullable value

Maybe monadic container implementation

Functions to work with `undefined` and `null` values

Tri-state logic for javascript

Typescript version of fsharps Option module

Nullable type and helper functions for typescript

nullable wrapper for javascript type

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

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

plain implementation of Maybe (Optional, Nullable) monad

TypeScript maybe monad for reaching child fields inside complicated objects.

Create null safe property accessible Object library for JavaScript

A nullable(Null safety) implementation. Inspired by Kotlin.

Nullish helper functions and types for TypeScript.

utility functions with Nullable

safe map using sanctuary.js