add can method to editor class

packages/core/src/Editor.ts

@@ -115,7 +115,6 @@ export class Editor extends EventEmitter {
     this.createExtensionManager()
     this.createSchema()
     this.createView()
-    // this.registerCommands(coreCommands)
     this.injectCSS()
 
     window.setTimeout(() => this.proxy.focus(this.options.autoFocus), 0)
@@ -138,6 +137,13 @@ export class Editor extends EventEmitter {
     return this.commandManager.createChain()
   }
 
+  /**
+   * Check if a command or a command chain can be executed. Without executing it.
+   */
+  public can() {
+    return this.commandManager.createCan()
+  }
+
   /**
    * Inject CSS styles.
    */