kickstart-express/templates/modules/src-structured/ts/services/calculator.service.ts

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/**
 * Adds two numbers.
 * @param {number} a - The first number.
 * @param {number} b - The second number.
 * @returns {number} The sum of the two numbers.
 */
export const add = (a: number, b: number): number => {
  return a + b;
};