Function currentString

src/expression/parse.js:243–245

* View upto `length` characters of the expression starting at the current character. * * @param {Object} state * @param {number} [length=1] Number of characters to view * @returns {string} * @private

(state, length)

   * @private
   */
  function currentString (state, length) {
    return state.expression.substr(state.index, length)
  }

  /**
   * View the current character. Returns '' if end of expression is reached.