index.js
function evalFunctionCall (string, functionIdentifier, callback, call, functionRE) {
  // allow recursivity
  return callback(reduceFunctionCall(string, functionRE, callback), functionIdentifier, call)
}
function evalFunctionCall (string, functionIdentifier, callback, call, functionRE) {
  // allow recursivity
  return callback(reduceFunctionCall(string, functionRE, callback), functionIdentifier, call)
}
function evalFunctionCall ( string , functionIdentifier , callback , call , functionRE ) { // allow recursivity return callback ( reduceFunctionCall ( string , functionRE , callback ) , functionIdentifier , call ) }
Evaluates an expression

@param {String} expression
@returns {String}
@api private
Evaluates an expression