Splitting Wasp TS Config?

Wasp TS Config: Strategies for Improved Code Organization

Wasp's TS config, introduced in v0.15, aimed to simplify development with features like multi-Wasp file support and enhanced editor integration. While direct multi-file support is planned for future releases, we can already improve code organization and reduce the size of main.wasp.ts.

Method: Modularizing Configuration

This approach involves extracting different configuration sections (pages, jobs, queries, actions, etc.) into separate modules. This improves readability and maintainability.

Part 1: Decoupling Page Definitions

To separate page definitions, we can create a dedicated configuration file (e.g., pages.config.ts).

Step 1: Create pages.config.ts

This file exports a function that generates page configurations based on the provided app instance:

<code class="language-typescript">// pages.config.ts
export const pagesConfig = (app: any) => {
  const landingPage = app.page('LandingPage', {
    component: { importDefault: 'LandingPage', from: '@src/landing-page/LandingPage' }
  });
  // ... other pages

  return {
    landingPage,
    // ... other pages
  };
};</code>

Consider placing this file in a dedicated directory (e.g., wasp-config).

Step 2: Importing and Using pages.config.ts in main.wasp.ts

Import the pagesConfig function and pass the app instance to it:

<code class="language-typescript">// main.wasp.ts
import { pagesConfig } from './pages.config.ts';
// ... other code

const { landingPage, /* ... other pages */ } = pagesConfig(app);

app.route('LandingPageRoute', { path: '/', to: landingPage });</code>

Part 2: Modularizing Jobs, Queries, and Actions

The same modularization strategy applies to jobs, queries, and actions. Let's demonstrate with jobs using jobs.config.ts.

Step 1: Create jobs.config.ts

This file defines a function to generate job configurations:

<code class="language-typescript">// jobs.config.ts
import { JobConfig } from "wasp-config";

export const jobConfigs = (app: any) => {
  const dailyStatsJobConfig: JobConfig = {
    executor: 'PgBoss',
    perform: {
      fn: { import: 'calculateDailyStats', from: '@src/analytics/stats' }
    },
    entities: ['User', 'DailyStats', 'Logs', 'PageViewSource']
  };

  return {
    dailyStatsJobConfig
  };
};</code>

Step 2: Importing and Using jobs.config.ts in main.wasp.ts

Import and use the jobConfigs function similarly to the page configuration:

<code class="language-typescript">// main.wasp.ts
import { jobConfigs } from './jobs.config.ts';
// ... other code

const { dailyStatsJobConfig } = jobConfigs(app);

app.job('dailyStatsJob', dailyStatsJobConfig);</code>

Conclusion

This modular approach significantly improves the organization of your Wasp configuration, enhancing readability and maintainability while awaiting official support for multiple Wasp files. This technique offers a practical solution for managing complex Wasp projects even without direct multi-file support. Remember to adapt this approach for queries and actions as needed.

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