rconsole.js
function prependUntilLength (str, len, char) {
  if (str.length >= len) 
    return str
  else 
    return prependUntilLength(str=char+str, len, char)
}
function prependUntilLength (str, len, char) {
  if (str.length >= len) 
    return str
  else 
    return prependUntilLength(str=char+str, len, char)
}
function prependUntilLength ( str , len , char ) { if ( str . length >= len ) return str else return prependUntilLength ( str = char + str , len , char ) }
Prepends `char` to `str` until it's length is `len`

@param {String} str
@param {Number} len
@param {String} char
@return {String}
@api private
Prepends char to str until it s length is len