VScode API 为什么我无法获取当前行? [英] VScode API why can't I get the current line?

问题描述

我正在使用 typescript 编写 vs 代码扩展，但由于某种原因我无法获取当前行.

I am using typescript to write a vs code extension and for some reason I am unable to get the current line.

我正在尝试制作的功能是:

The function I am trying to make is:

function makeFrame()
{
    vscode.window.activeTextEditor.selection.active.line;
}

失败并出现错误:对象可能未定义导入语句是:

Which fails with error: Object is possibly undefined The import statement is:

import {window, commands, Disposable, ExtensionContext, StatusBarAlignment, StatusBarItem, TextDocument} from 'vscode';

我做错了什么?

(我既是 TypeScript 的新手，也是为 VS 代码编写扩展)

(I am both new to TypeScript and writing extensions for VS code)

推荐答案

activeTextEditor 可能是 undefined.这表示没有活动编辑器，例如当您第一次打开新工作区或关闭所有编辑器时会发生

activeTextEditor may be undefined. This indicates that there is no active editor and will happen for example when you first open a new workspace or when you close all editors

要修复，只需添加一个快速检查:

To fix, just add a quick check:

function makeFrame()
{
    const activeEditor = vscode.window.activeTextEditor;
    if (activeEditor) {
        activeEditor.selection.active.line;
    }
}

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