pipeit.js

// itpipe.js
/**
 * Creates a proxy that captures method calls for piping
 * @returns {Proxy} The 'it' proxy object
 */
const createItProxy = () => {
  return new Proxy({}, {
    get: (target, prop) => {
      if (typeof prop === 'symbol' || prop === 'inspect') {
        return () => {};
      }
      return (...args) => (value) => {
        if (typeof value[prop] === 'function') {
          return value[prop](...args);
        }
        return value[prop];
      };
    }
  });
};

/**
 * The 'it' proxy for creating method calls
 */
const it = createItProxy();

/**
 * Pipes a value through a series of functions
 * @param {...Function} fns - Functions to pipe through
 * @returns {Function} A function that takes an initial value and returns the result
 */
const pipe = (...fns) => (val) => {
  return fns.reduce((result, fn) => fn(result), val);
};

/**
 * Composes functions from right to left (reverse of pipe)
 * @param {...Function} fns - Functions to compose
 * @returns {Function} A function that takes an initial value and returns the result
 */
const compose = (...fns) => (val) => {
  return fns.reduceRight((result, fn) => fn(result), val);
};

module.exports = { pipe, compose, it };