logging.js

/**
 * Returns a function that will print a line to the console in a given color.
 * The line will be prefixed and colored. All substituted values are bolded.
 *
 * @param {String} color Color to print in (must be supported by cli-color)
 * @param {String} level Severity of the message {log, info, warn, error}
 * @param {String} pre Prefix character in front of the message
 * @returns {Function} Logging printer
 */
function logMessage(color, level='log', pre=bullet) {
  return function(msg, ...subs) {
    subs = subs.map(sub => clc.bold(sub));
    console[level].apply(console, [clc[color](`${pre} ${msg}`)].concat(subs));
  }
}

/**
 * Prints a line of text to the console indicating success.
 *
 * @param {String} msg Message to log to the console
 * @param {Array} subs Any desired substitution values
 */
const logSuccess = logMessage('green', 'log');