persistenceModule.js

/*
This is an example of how to use the persistence module.
For this example we'll store the value of a slider (a real use case) but you can store pretty much anything.

Project setup:
- Persistence:
  Whitelist your key (in this example 'savedSliderValue')
  Go to Project > Edit Properties... > Capabilities > + Persistence > Write you key in the text box.
  The key used in this example project is "savedSliderValue"

- NativeUI:
  Enable the Slider
*/

// Load the required modules
const NativeUI = require('NativeUI');
const Persistence = require('Persistence');
const Patches = require('Patches');
const Diagnostics = require('Diagnostics');

// Shortcut for 'NativeUI.slider'
const slider = NativeUI.slider;
let sliderValue = 0.5; // Slider values range from 0 to 1. This value will be the default if no value was stored previously

Persistence.local.get('savedSliderValue').then((savedSliderValue) => {
	/*
	This conditional won't execute if the savedSliderValue is undefined/null.
	Thus if no object was stored the code inside won't get executed and sliderValue will preserve it's current value
	If you are confused as to how if(savedSliderValue){} works see https://developer.mozilla.org/en-US/docs/Glossary/Truthy
	*/
	if (savedSliderValue) {
		// The line below gets the 'value' attribute of the object, see lines 46 & 47
		sliderValue = savedSliderValue.value;
	}
})
.then(() => {
	// Configure the slider, the slider must be configured after getting the value
	slider.value = sliderValue;
	slider.visible = true;

	slider.value
	.monitor({ fireOnInitialValue: true }) // monitor changes in the value
	.select('newValue') // you can either get the 'newValue' or 'oldValue'
	.subscribe((newSliderValue) => { // The function in .subscribe() gets executed everytime the value changes
		// You have to store things as objects. So we create an object with a property called 'value'
		Persistence.local.set('savedSliderValue', { value: newSliderValue });
		sliderValue = newSliderValue;

		/*
		Optional: send the value to the patch editor.
		Select a script and create a From Script variable called 'slider'
		The 'Patches' module is already imported on line 17
		*/
		// Patches.inputs.setScalar('slider', sliderValue);
});
});