'require'关键字在节点红色功能节点中不起作用 [英] 'require' keyword doesn't work within Node Red Function node

问题描述

var moment = require（'moment-timezone'）;

var moment = require('moment-timezone');

我正在尝试为传感器数据建立时区正确的日期/时间戳。此节点运行时出现以下错误;

I am trying to establish a timezone correct date/time stamp for sensor data. I get the following error when this node runs;

ReferenceError：require未定义（第1行，第14行）

顺便说一句，这个函数还有其他一直运行良好的JavaScript。

This function, by the way, has other JavaScript which always runs perfectly.

我的Package.json没有错误，我有，moment-timezone：0.5.3补充。

My Package.json has no errors and I have the, "moment-timezone":"0.5.3" added.

我从一点或研究中了解到我需要在settings.js文件中添加一些东西，但是，我需要一些关于添加内容的指导，以便识别'require'。

I understand from a bit or research that I need to add something to the settings.js file, however, I need some guidance on what to add so that 'require' is recognized.

推荐答案

as 这个GitHub问题答案说明，你不能使用 require 本身在函数节点内，但您可以将外部模块添加到用于运行函数的沙箱中。您可以在 settings.js 文件中执行此设置 functionGlobalContext ，如下所示：

As this GitHub issue answer states, you cannot use require itself inside a function node, but you can add external modules to the sandbox used to run functions. You would do this setting functionGlobalContext inside your settings.js file like the following:

functionGlobalContext: {
    tzModule:require('moment-timezone')
}

然后可以使用以下代码引用该模块：

The module can then be referenced by using the following code:

var moment = global.get('tzModule');

查看关于全局背景的Node-RED文档以获取完整的详细信息。

Check out the Node-RED documentation on global-context for full details.

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