Can we share the global variables across js files without using require or module.exports?

Question

I tried to share my global variable across js files and also in gulp task without using module.exports and require.

Here is the sample code:

File 1:

server.js

var server = new Hapi.Server()
  global.configurationManagerObj = 'Dev'

File 2:

siteconfig.js

console.log("This is global variable from server file",global.configurationManagerObj)

File 3:

gulpfile.js

gulp.task('setenv', function(done) {
    console.log("Global variable is shared in gulp task", global.configurationManagerObj);
    done();
});

But If I tried to get the variable it shows undefined.

How can to refer files without require or exports there should be a common reference ti access variables — Vinod Louis, Apr 18 '17 at 05:28
You have to require server.js at least once somewhere. Otherwise how node would know about you global variables? — Alexey Ten, Apr 18 '17 at 05:37

score 0 · Accepted Answer · edited May 23 '17 at 11:47

0

your can assign variable on global process object and can access it anywhere.

this might help read-environment-variables

edited May 23 '17 at 11:47

Community

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1

answered Apr 18 '17 at 05:34

Fazal Rasel

4,446
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Thanks Fazal.. it works when I use like this process.env.config = 'dev' but If I using it in gulp task it shows undefined why? – Ramyachinna Apr 18 '17 at 06:50

score 0 · Answer 2 · answered Apr 18 '17 at 07:33

0

env variable is only available in Nodejs process .if node is not running u will not have the variable.and u cant get that variable outside the node process also. so better you use require i think ps: totally personal view.

answered Apr 18 '17 at 07:33

Nilasis Sen

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1
10

score 0 · Answer 3 · answered Oct 28 '20 at 05:08

Have you tried using environment variable to store global variables? process.env is build in to nodejs.

Ex. process.env.FOO = "foo"

You'll only be able to access it when the node process is running otherwise it will just show everything as undefined.

PS: Keep in mind that this is an anti pattern. Also, assigning a property on process.env will implicitly convert the value to a string.

Can we share the global variables across js files without using require or module.exports?

3 Answers3