Method operation

typings/codemirror/codemirror.d.ts:308–308

CodeMirror internally buffers changes and only updates its DOM structure after it has finished performing some operation. If you need to perform a lot of operations on a CodeMirror instance, you can call this method with a function argument. It will call the function, buffering up al

(fn: ()=> T)

        It will call the function, buffering up all changes, and only doing the expensive update after the function returns.
        This can be a lot faster. The return value from this method will be the return value of your function. */
        operation<T>(fn: ()=> T): T;

        /** Adjust the indentation of the given line.
        The second argument (which defaults to "smart") may be one of: