Method peek

typings/codemirror/codemirror.d.ts:946–946

* Returns the next character in the stream without advancing it. Will return an null at the end of the line.

()

         * Returns the next character in the stream without advancing it. Will return an null at the end of the line.
         */
        peek(): string;

        /**
         * Returns the next character in the stream and advances it. Also returns null when no more characters are available.