Switcher Library

A TypeScript library that provides a flexible and easy-to-use switch-case mechanism, allowing for more readable and maintainable code.

Features

• Flexible case conditions with case(), caseOr(), and caseAnd().
• Supports default values with default().
• Allows breaks to stop execution early with break().
• Works with complex conditionals using caseOr() (OR logic) and caseAnd() (AND logic).

Installation

npm install switcher-library

Usage

Basic Example

import { Switcher } from 'switcher-library';

const result = Switcher.switch(5)
.case((x) => x === 5, () => 'It is five!')
.default(() => 'Default case')
.out();

console.log(result); // Output: 'It is five!'

Using caseOr and caseAnd

import { Switcher } from 'switcher-library';

const result = Switcher.switch(5)
.caseOr((x) => x > 10)
.caseAnd((x) => x < 10)
.then(() => 'Number is less than 10')
.default(() => 'Default case')
.out();

console.log(result); // Output: 'Number is less than 10'

API

Switcher.switch(target: T, isAutoBreak: boolean = true)

• Starts the switch operation on the target value.

• isAutoBreak: Optional. If true (default), breaks the switch after the first match.

SwitcherBuilder.case(predicate: (t: T) => boolean, func: (t: T) => U)

• Adds a case condition.

• If the predicate returns true, the function will execute.

SwitcherBuilder.caseOr(predicate: (t: T) => boolean)

• Adds an OR condition to the case.

SwitcherBuilder.caseAnd(predicate: (t: T) => boolean)

• Adds an AND condition to the case.

SwitcherBuilder.default(func: (t: T) => U)

• Defines the default case if no conditions are met.

SwitcherBuilder.break()

• Breaks out of the switch and returns the result.

Contributing

Feel free to fork the repository and submit pull requests with improvements or fixes!

License

MIT License. See LICENSE for more information.