mui-icons-material-lazy

The idea behind this NPM lib is to be ables to use the @mui/icons-material catalog of icons even if the icons that will be used aren't known at build time.

Since including all 2000+ icons in the bundle would make the bundle size explode there is a need for a solution that enables to load the icons lazily when they are needed.

It's a requirement we have for the Onyxia project because the web application is distributed as a white-labeled statical SPA. People that deploy an onyxia instance can customize the look of onyxia via injecting standardized environnement variable.
This means that we can't know at build time which icons will be used.

Usage

yarn add mui-icons-material-lazy

package.json

{
    "scripts": {
        "postinstall": "mui-icons-material-lazy postinstall"
        // If you are in a monorepo you can specify your SPA (Vite or CRA) project path like:
        // "postinstall": "mui-icons-material-lazy postinstall --project packages/front
    }
}

import { createGetIconUrl } from "mui-icons-material-lazy";

const { getIconUrl, getIconUrlByName } = createGetIconUrl({
    BASE_URL: import.meta.env.BASE_URL
    // Or if you are in create-react-app:
    // BASE_URL: process.env.PUBLIC_URL,
    // Or if you have a custom build setup:
    // BASE_URL: "/",
});

// Let's say we have this variable that isn't known at build time:
declare const HOME_ICON: string | undefined;

getIconUrl(HOME_ICON); // The return type is `string | undefined`
// If HOME_ICON is "https://example.net/my-icon.svg":   "https://example.net/my-icon.svg"
// If HOME_ICON is "Home" or "home":                    "https://my-app.com/mui-icons-material/Home.svg"

// Implementing fallback:

// iconUrl is of type `string`
const iconUrl = getIconUrl(HOME_ICON) ?? getIconUrlByName("Home");

Usage in onyxia-ui

src/lazy-icons

export const { getIconUrl, getIconUrlByName } = createGetIconUrl({
    BASE_URL: import.meta.env.BASE_URL
});

In a component:

import { Icon } from "onyxia-ui/Icon";
// Absolute import using ts-config-paths and baseUrl: "./src"
import { getIconUrl, getIconUrlByName } from "lazy-icons";

declare const SOME_ICON: string;

<Icon icon={getIconUrl(SOME_ICON)} />;

declare const MAYBE_SOME_ICON: string | undefined;

<Icon icon={getIconUrl(MAYBE_SOME_ICON) ?? getIconUrlByName("Home")} />;