https://github.com/adam-rocska/invertible-typescript

A library for creating and managing invertible functions and type-safe pipelines in TypeScript.
https://github.com/adam-rocska/invertible-typescript

composition compositionality functional functional-programming inverse invertible pipe pipeline proverse pure stateless strict typesafe typescript

Last synced: 6 months ago
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A library for creating and managing invertible functions and type-safe pipelines in TypeScript.

• Host: GitHub
• URL: https://github.com/adam-rocska/invertible-typescript
• Owner: adam-rocska
• License: mit
• Created: 2023-08-30T13:16:33.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2025-04-01T21:16:19.000Z (6 months ago)
• Last Synced: 2025-04-03T10:44:35.000Z (6 months ago)
• Topics: composition, compositionality, functional, functional-programming, inverse, invertible, pipe, pipeline, proverse, pure, stateless, strict, typesafe, typescript
• Language: TypeScript
• Homepage:
• Size: 924 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

          
# Invertible Functions for TS & JS

[![NPM Version](https://img.shields.io/npm/v/@adam-rocska/invertible.svg)](https://www.npmjs.com/package/@adam-rocska/invertible)

[![License](https://img.shields.io/npm/l/@adam-rocska/invertible)](https://github.com/adam-rocska/invertible-typescript/blob/master/LICENSE)

| Aspect               | Badge                                                                                                                                                     |

| -------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |

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| Tree-shaking Support | [![Tree-shaking Support](https://badgen.net/bundlephobia/tree-shaking/@adam-rocska/invertible)](https://bundlephobia.com/package/@adam-rocska/invertible) |

A library for creating and managing invertible functions and type-safe pipelines in TypeScript.

## Installation

To install the package, use npm or yarn:

```zsh

npm install @adam-rocska/invertible

```

or

```zsh

pnpm add @adam-rocska/invertible

```

## Usage

Simple example:

```ts

import {Invertible} from "@adam-rocska/invertible";

import {pipe} from "@adam-rocska/invertible/pipe";

test(`Simple arithmetics example`, async () => {

  const increment = Invertible(

    async (a: number) => a + 1,

    async (a: number) => a - 1

  );

  const double = Invertible(

    async (a: number) => a * 2,

    async (a: number) => a / 2

  );

  expect(await increment(1)).toBe(2);

  expect(await increment.inverse(2)).toBe(1);

  expect(await double(2)).toBe(4);

  expect(await double.inverse(4)).toBe(2);

  const pipeExample = pipe(increment)

    .pipe(double)

    .pipe(increment)

    .pipe(double);

  expect(await pipeExample(1)).toBe(10);

});

```

## Usefulness Ideas

1. Undo-able user interface actions

2. Reversible CI pipeline steps and pipelines

3. Bidirectional data coding

## Contributing

Contributions are welcome!

Please read the [contributing guidelines](./CONTRIBUTING.md)

before submitting a pull request.

## License

This project is licensed under the MIT License - see the

[LICENSE](./LICENSE) file for details.

## Author

[Ádám László Rocska](https://github.com/adam-rocska)