stringify.js

const escapeString = str => str && str.replace(/[\n\r]/g, '')
// Won't work for minified class names however we need something fast
// That does not require iterating through everything
const fetchTypeName = data => data && data.constructor && data.constructor.name
const stringify = (data, depth = 5, customFormatters = {}) => {
  const typename = fetchTypeName(data)
  /* eslint-disable no-nested-ternary */
  return data === undefined
    ? 'null'
    : !data
    ? JSON.stringify(data)
    : typeof data === 'object' && !Array.isArray(data)
    ? customFormatters[typename]
      ? customFormatters[typename](data)
      : typeof data.toJSON === 'function'
      ? stringify(data.toJSON(), depth)
      : depth < 1
      ? '"{ ? }"'
      : `{${
        Object
          .keys(data)
          .map(
            k => `${stringify(k, depth - 1)}: ${stringify(data[k], depth - 1)}`,
          )
          .join(', ')
      }}`
    : Array.isArray(data)
    ? `[${
      data
        .map(d => (depth < 1 ? '"?"' : stringify(d, depth - 1)))
        .join(', ')
    }]`
    : typeof data === 'function'
    ? '"f()"'
    : JSON.stringify(data)
}

const stringifySimple = data => (
  typeof data === 'string'
    ? escapeString(data)
    : data
)

module.exports = { stringify, stringifySimple }