Best way to write to JSON file in Node 10/Angular 7?

Question

I'm not sure if this question belongs here, but this is driving me insane. I am running Node v10.16.0. Sorry!

Since in Angular 7 fs no longer works - what is the best way to write to a JSON file?

Importing a JSON file now works nice and easy, but how do I write to it?

Edit: Adding what I tried.

component.ts:

import * as fs from 'fs';
[...]
saveChanges(changes) {
    fs.writeFile('config.json', JSON.stringify(config), null);

Error: `Module not found: Error: Can't resolve 'fs' `

Angular apps executes in the brower. Bowser apps aren't allowed to write files. — JB Nizet
– JB Nizet, Commented Jul 17, 2019 at 16:13
That is true, but NodeJS used to offer the fs module (or was it angular? anyway, it worked.) you could use fs.writeFile() for example. — mneumann
– mneumann, Commented Jul 17, 2019 at 16:14
Well, it's important to understand what environment you're running your code on, otherwise you run into exactly these types of situations. — Heretic Monkey
– Heretic Monkey, Commented Jul 17, 2019 at 16:15
Yes, but NodeJS is used to write server applications, not browser applications. — JB Nizet
– JB Nizet, Commented Jul 17, 2019 at 16:16

pascalpuetz · Accepted Answer · 2019-07-17 19:33:19Z

2

Calling fs from within Angular is not possible - and usually not what you want to do.

Angular is a Front-End Framework that is used to bind data to a UI. This happens in a Browser environment, not NodeJS.

What you are most likely doing is serving your Angular application using some kind of NodeJS Server (like express, or the Angular CLI).

answered Jul 17, 2019 at 19:33

pascalpuetz

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1 Comment

mneumann Over a year ago

Exactly, sorry. I am running Angular CLI.

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