Function-node access to a global-function in Settings.js

General
1

I'm trying to access a global function I created in the Settings.js file.
I placed my function "testGlobalFunction" in Settings.js under "functionGlobalContext:":

    functionGlobalContext: {
        // os:require('os'),
	global.testGlobalFunction = function(){
		let x = {payload:'Returned Value'}
		return x;
	}
    },

Then I restarted Node.js.

In the Function-node I tried several ways to access it;

var testGlobalFunction=global.get('testGlobalFunction')
var x= global.testGlobalFunction()
node.warn(x)
return x;

Or

var x= global.testGlobalFunction()
node.warn(x)
return x;

and using the settings to import module 'testGlobalFunction()'.

In each case I get an error saying that it can't find the function.

What am I doing wrong?

2

That property only refers to global storage so you don't need to repeat it. It should just be testGlobalFunction

3

Are you referring to the "global.testGlobalFunction" in the Settings.js, or the reference in the Function-Node?

UPDATE: I have tried every combination; with and without "global." and I still get Function not found.

4 
functionGlobalContext: {
	testGlobalFunction = function(){
		let x = {payload:'Returned Value'}
		return x;
	}
},

const testGlobalFunction = global.get('testGlobalFunction')
const x = testGlobalFunction()
node.warn(x)
return x;
5

This is the code I have in the settings.js file:

    functionGlobalContext: {
        // os:require('os'),
    	testGlobalFunction = function(){
		let x = {payload:'Returned Value'}
		return x;
	}
    },

I believe I have it exactly as you specified, but the Node.js server fails to start. The cmd window pops-up and then immediately closes.

Even though it was commented out; I removed " // os:require('os'),"; it made no difference; the server won't run.

UPDATE: If I comment-out the function code the Node.js server runs again.

6

Did you look in your log?

0|Node-RED  | Error loading settings file: D:\src\nr\data\settings.js
0|Node-RED  | D:\src\nr\data\settings.js:899
0|Node-RED  |         testGlobalFunction = function(){
0|Node-RED  | SyntaxError: Invalid shorthand property initializer
0|Node-RED  |     at internalCompileFunction (node:internal/vm:73:18)
0|Node-RED  |     at wrapSafe (node:internal/modules/cjs/loader:1178:20)
0|Node-RED  |     at Module._compile (node:internal/modules/cjs/loader:1220:27)
0|Node-RED  |     at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
0|Node-RED  |     at Module.load (node:internal/modules/cjs/loader:1119:32)
0|Node-RED  |     at Module._load (node:internal/modules/cjs/loader:960:12)
0|Node-RED  |     at Module.require (node:internal/modules/cjs/loader:1143:19)
0|Node-RED  |     at Hook._require.Module.require (C:\Users\julia\AppData\Roaming\npm\node_modules\pm2\node_modules\require-in-the-middle\index.js:101:39)
0|Node-RED  |     at require (node:internal/modules/cjs/helpers:121:18)
0|Node-RED  |     at Object.<anonymous> (D:\src\nr\node_modules\node-red\red.js:140:20)

        testGlobalFunction: function() {
            let x = { payload: 'Returned Value' }
            return x
        },

Corrected version. Note the : instead of the =.

7

Well that little ":" certainly makes a difference; everything works now.

Regarding the log-file; where is it? There're no logs in the .node-red folder, or in Program Files. The only log files I've found are in npm-cache, buried in appdata, and they are not the node-red logs.

BTW: thanks for catching the error.

Also, will a function placed in settings.js be able to access suncalc, for example:

var gate
var location = { latitude: 40.392, longitude: -74.1843 };
var times = suncalc.getTimes(new Date(), location.latitude, location.longitude);
gate = {
    sunrise: times.sunrise.getTime(),
    sunset: times.sunset.getTime(),
    now: new Date().getTime()}

I import using the function-node setting; how do I import it just using java-script?
I've tried:

const suncalc = require('suncalc');

Says 'require' undefined
and

import suncalc from 'suncalc';

Says: Cannot use import statement outside a module
Neither seem to resolve 'suncalc'
ALL TESTING BEING DONE IN A FUNCTION-NODE: NOT IN SETTING.JS.

8

Question RESOLVED:

const suncalc = require('suncalc');

This code does not work in a function-node, BUT, it does work in the settings.js file.
I'm able to access the suncalc data from any function-node.

9

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