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@corentinth/chisels

v1.1.0

Published

Collection of utilities for JavaScript and TypeScript, lightweight and tree-shakable.

Downloads

1,064

Readme

Chisels - JS/TS utilities and types

Opinionated collection of reusable JS/TS utilities and types.

  • Tree-shakable ES modules: Import only what you need
  • Fully tested: Rigorous unit tests with comprehensive coverage
  • TypeScript support: Written in TypeScript with full type definitions
  • Lightweight: Small bundle size
  • Modern: Written with modern JS/TS syntax
  • Named arguments: Functions with preferably named arguments

Installation

# Using npm
npm install @corentinth/chisels

# Using yarn
yarn add @corentinth/chisels

# Using pnpm
pnpm add @corentinth/chisels

Usage

// Using ES6 import
import { safely } from '@corentinth/chisels';

// Using CommonJS require
const { safely } = require('@corentinth/chisels');

const [result, error] = safely(mayThrowError);

console.log({ result, error });

API

safelySync

Function - See source

Safely executes a function and return a tuple with the result and an error if any.

const [result, error] = safelySync(myFunction);

if (error) {
 console.error(error);
}

console.log(result);

safely

Function - See source

Safely executes an async function or promise and return a tuple with the result and an error if any.

const [result, error] = await safely(myFunction);

if (error) {
 console.error(error);
}

console.log(result);

formatBytes

Function - See source

Formats a number of bytes into a human-readable string.

const formatted = formatBytes({ bytes: 4194304 });

console.log(formatted); // 4 MiB

castError

Function - See source

Casts an unknown value to an Error.

 try {
     // ...
 } catch (rawError) {
   const error = castError(rawError);

   // Do something with a proper Error instance
 }

joinUrlPaths

Function - See source

Join URL parts and trim slashes.

const url = joinUrlPaths('/part1/', '/part2/', 'part3', 'part4/');

console.log(url); // 'part1/part2/part3/part4'

buildUrl

Function - See source

Functional wrapper around URL constructor to build an URL string from a base URL and optional path, query params and hash.

const url = buildUrl({ baseUrl: 'https://example.com', path: 'foo', queryParams: { a: '1', b: '2' }, hash: 'hash' });

console.log(url); // 'https://example.com/foo?a=1&b=2#hash'

injectArguments

Function - See source

Injects arguments into a set of functions. Useful for DI of repositories, services, etc.

 const functions = {
  getUser: ({ userId, db }) => db.users.find({ id: userId }),
  removeUser: ({ userId, db }) => db.users.remove({ id: userId }),
 };

 const { getUser, removeUser } = injectArguments(functions, { db });

 getUser({ userId: 1 });
 removeUser({ userId: 1 });

PartialBy

Type alias - See source

Make some properties of T optional

type User = {
  id: number;
  name: string;
  email: string;
};

type PartialUser = PartialBy<User, 'email' | 'name'>;

const user: PartialUser = { id: 1 };

Expand

Type alias - See source

Flatten an object type for better IDE support

Dictionary

Type alias - See source

Record<string, T> alias

const dictionary: Dictionary<number> = {
  a: 1,
  b: 2,
};

DeepPartial

Type alias - See source

Make all properties of T optional recursively

Subtract

Type alias - See source

Exclude properties of T that are in U

type User = {
  id: number;
  name: string;
  email: string;
};

type WithId = {
  id: number;
}

type UserWithoutId = Subtract<User, WithId>;

License

This project is licensed under the MIT License. See the LICENSE file for more information.

Credits and Acknowledgements

This project is crafted with ❤️ by Corentin Thomasset.