An opinionated lib of types and utilities for your TypeScript and JavaScript projects which aims to add missing functionalities to standard Js and replace other.

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• tiinvo
• Install
• Features
• Usage
• Contributing
• Licence

You can install it using npm

npm i tiinvo

Or with yarn

yarn add tiinvo

or if you are using Deno, you have to simply import it

import { Arr, Option, Result } from 'https://cdn.skypack.dev/tiinvo?dts';

This library is

• Simple
• Intuitive
• Lightweight
• Pragmatic
• Safe
• Side-effect free and fully tree-shakeable
• Versatile
• Battle-tested (used in dozens of production projects)
• Well-documented (every type, function and function overload is documented properly)
• Well-maintained
• Well-tested

This library is ideal for both an imperative and declarative approach, since every function is overloaded and can be used without the need to use curry (I love it for cooking, not for coding).

It normalizes several native JavaScript methods (like string, number and array).

This library provides several new data types like

• DateRange which is a reliable way to generate date ranges.
• Option which handles gracefully values which could be both null or undefined.
• Predicate are used to determine truthyness.
• Range is used to generate a numeric range.
• Result handles errors gracefully.
• Sequence is an immutable sequence of elements.
• SortedSequence is a sorted immutable sequence of elements.
• Tuple is a tuple.
• TypedMap is a typed immutable Map of elements.
• TypedSequence is a typed immutable sequence of elements.

wraps native types

• Arr handles all array methods, adding new ones.
• BigInt handles all bigint methods, adding new ones.
• Bool handles all boolean methods, adding new ones.
• Fn handles all function methods, adding new ones.
• Num handles all number methods, adding new ones.
• Obj handles all object methods, adding new ones.
• Str handles all string methods, adding new ones.

and adds utility functions

• Assert used to create assertions.
• Catch used to catch gracefully functions which could throw an error.
• Pipe concatenates many unary functions in one, great for function composition.

Every contribution is really welcome!

If you feel that something can be improved or should be fixed, feel free to open an issue with the feature or the bug found.

Pull requests are really welcome!

• Create a new branch from main
• open your PR
• enjoy!

Read the contributing guidelines

Read the licence