我目前的目标是改变行为，使所有删除整行或几行的vim命令仅在满足某些条件时才执行。本主题帮助我覆盖了删除功能：Replacing the standard behaviour of the delete line hotkey "dd" in Ace editor's Vim mode with a function call但是我无法从删除函数被覆盖的函数中调用它的原始实现，以便在不满足条件的情况下它的行为正常。

import * as ace from 'ace-builds';
this.aceEditor = ace.edit(this.editor.nativeElement);
ace.require('ace/keybindings/vim');
this.aceEditor.setKeyboardHandler('ace/keyboard/vim');

ace.config.loadModule('ace/keyboard/vim', () => {
  var VimApi = ace.require('ace/keyboard/vim').CodeMirror.Vim;
  VimApi.defineOperator(
    'delete',
     this.deleteCurrentLineIfSolved.bind(this)
  );
});

deleteCurrentLineIfSolved(event, signal) {
    // if condition is met, call original implementation of delete here
    // else, do nothing
}

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删除函数似乎存储在某种形式的'operators'数组中，github.com/ajaxorg/ace/blob/master/src/keyboard/vim.js#L3182，但我不确定如何导入或访问它。
如果你能帮忙的话，我将不胜感激。