define display mode as enum for desktop and mobile in javascript

An enum is a way of defining a set of named constants in JavaScript. It allows us to define a set of possible values for a given property, which in this case is the display mode. Here's an approach to define a DisplayMode enum for desktop and mobile:

index.tsx
const DisplayMode = Object.freeze({
  DESKTOP: Symbol("desktop"),
  MOBILE: Symbol("mobile")
});

// sample usage
const currentMode = DisplayMode.DESKTOP;

switch (currentMode) {
  case DisplayMode.DESKTOP:
    // do something
    break;
  case DisplayMode.MOBILE:
    // do something else
    break;
  default:
    throw new Error("Invalid display mode");
}
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In the above code, we first define an enum using Object.freeze and Symbol. The Symbol function creates a unique identifier that can be used as a property key in objects, while Object.freeze prevents the enum from being modified.

We define two possible values for the DisplayMode enum: DESKTOP and MOBILE, each with its own unique Symbol. We can use these values to represent the current display mode in our application.

Finally, we show a sample usage of the enum using a switch statement. Here, we check the current display mode and perform some actions based on its value.