MZC/KnowMathBot/frontend/node_modules/ccount/index.js

/**
 * Count how often a character (or substring) is used in a string.
 *
 * @param {string} value
 *   Value to search in.
 * @param {string} character
 *   Character (or substring) to look for.
 * @return {number}
 *   Number of times `character` occurred in `value`.
 */
export function ccount(value, character) {
  const source = String(value)

  if (typeof character !== 'string') {
    throw new TypeError('Expected character')
  }

  let count = 0
  let index = source.indexOf(character)

  while (index !== -1) {
    count++
    index = source.indexOf(character, index + character.length)
  }

  return count
}