LengthConversion.js

/**
 * Converts a length from one unit to another.
 *
 * @param {number} length - The length to convert.
 * @param {string} fromUnit - The unit to convert from (e.g., "km", "m", "cm").
 * @param {string} toUnit - The unit to convert to (e.g., "km", "m", "cm").
 * @returns {number} The converted length.
 * @throws {Error} If the units are invalid or not found in the conversion dictionary.
 */

const lengthConversion = (length, fromUnit, toUnit) => {
 // Define a dictionary to map units to meters
 const meters = {
 mm: 0.001,
 cm: 0.01,
 m: 1,
 km: 1000,
 inch: 0.0254,
 ft: 0.3048,
 yd: 0.9144,
 mi: 1609.34
 }

 // Check if the units are in the dictionary, otherwise, throw an error
 if (!(fromUnit in meters) || !(toUnit in meters)) {
 throw new Error('Invalid units')
 }

 // Perform the conversion
 const metersFrom = length * meters[fromUnit]
 const convertedLength = metersFrom / meters[toUnit]

 return convertedLength
}

export { lengthConversion }