Cosmic

Cosmic is the free and open source ui design suite. It supports the entirety of the prototype, visual design, animation, component package and code release.

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Continuous Integration

The configured workflow will check the types for each push and PR.
The configured workflow will check the code style for each push and PR.
- Unit tests are placed within each package and run separately.
- End-to-end tests are placed in the root tests directory and use playwright.

Continuous delivery

Each time you push changes to the main branch, the release workflow starts, which creates a release draft.
- The version is automatically set based on the current date in the format yy.mm.dd-minutes.
- Notes are automatically generated and added to the release draft.
- Code signing supported. See compile job in the release workflow.
Auto-update is supported. After the release is published, all client applications will download the new version and install updates silently.

Project Structure

The structure of this template is very similar to the structure of a monorepo.

The entire source code of the program is divided into three modules (packages) that are each bundled independently:

packages/app Electron main script.
packages/preload Used in BrowserWindow.webPreferences.preload. See Checklist: Security Recommendations.
packages/site Electron web page.
packages/core Core libs for cosmic.
packages/module Modules for cosmic.

Compile App

The next step is to package and compile a ready to distribute Electron app for macOS, Windows and Linux with "auto update" support out of the box.

To do this using the electron-builder:

Using the npm script compile: This script is configured to compile the application as quickly as possible. It is not ready for distribution, it is compiled only for the current platform and is used for debugging.
Using GitHub Actions: The application is compiled for any platform and ready-to-distribute files are automatically added as a draft to the GitHub releases page.

Using external modules in renderer

According to Electron's security guidelines, Node.js integration is disabled for remote content. This means that you cannot call any Node.js api in the packages/site directly. This also means you can't import external modules during runtime in the renderer:

// renderer.bundle.js
const { writeFile } = require('fs'); // ReferenceError: require is not defined
writeFile();

To use external modules in Renderer you must describe the interface in the packages/preload where the Node.js api is allowed:

// packages/preload/src/index.ts
import type { BinaryLike } from 'crypto';
import { createHash } from 'crypto';

contextBridge.exposeInMainWorld('nodeCrypto', {
    sha256sum(data: BinaryLike) {
        const hash = createHash('sha256');
        hash.update(data);
        return hash.digest('hex');
    },
});

The dts-cb utility will automatically generate an interface for TS:

// packages/preload/exposedInMainWorld.d.ts
interface Window {
    readonly nodeCrypto: { sha256sum(data: import('crypto').BinaryLike): string };
}

And now, you can safely use the registered method:

// packages/site/src/App.vue
window.nodeCrypto.sha256sum('data');

Modes and Environment Variables

All environment variables set as part of the import.meta, so you can access them as follows: import.meta.env.

If you are using TypeScript and want to get code completion you must add all the environment variables to the ImportMetaEnv in types/env.d.ts.

The mode option is used to specify the value of import.meta.env.MODE and the corresponding environment variables files that need to be loaded.

By default, there are two modes:

production is used by default
development is used by npm run watch script

When running the build script, the environment variables are loaded from the following files in your project root:

.env                # loaded in all cases
.env.local          # loaded in all cases, ignored by git
.env.[mode]         # only loaded in specified env mode
.env.[mode].local   # only loaded in specified env mode, ignored by git

To prevent accidentally leaking env variables to the client, only variables prefixed with VITE_ are exposed to your Vite-processed code. e.g. the following file:

DB_PASSWORD=foobar
VITE_SOME_KEY=123

Only VITE_SOME_KEY will be exposed as import.meta.env.VITE_SOME_KEY to your client source code, but DB_PASSWORD will not.

Do not put any sensitive data in files managed by git, for instance database password or server address in intranet

Contribution

See Contributing Guide.

searchfe/cosmic