Is it possible to leverage TypeScript type support in Electron by incorporating require statements within functions or conditions?

The Electron Performance documentation advises against loading and running code too soon. It suggests using the strategy of deferring the loading of sizable modules until they are actually needed, rather than placing all require() statements at the top of the file as is common in traditional Node.js development.

Although this approach is recommended for optimal performance, it presents a challenge for TypeScript users working with Electron applications like electron-react-boilerplate. An example in src/main.dev.ts triggers an ESLint error 'Unsafe call of an any typed value. eslint(

@typescript-eslint/no-unsafe-call
)' when using require('electron-debug').

However, replacing require with import eliminates this issue:

import electronDebug from 'electron-debug'; // at the top of the file

if (
  process.env.NODE_ENV === 'development' ||
  process.env.DEBUG_PROD === 'true'
) {
  electronDebug({ showDevTools: false });
}

But the question remains - how can one achieve the same result while still utilizing require with proper types support? Options like

import module = require('module')
have been suggested, but implementing them within certain contexts leads to other TypeScript errors.

Looking for solutions, some references such as this answer provide insights but do not offer a definitive resolution for integrating require seamlessly with TypeScript's type checking system.

Answer №1

To address the issue at hand, one solution is to employ an asynchronous import() method:

if (
  process.env.NODE_ENV === 'development' ||
  process.env.DEBUG_PROD === 'true'
) {
  import('electron-debug').then(electronDebug =>
    electronDebug.default({ showDevTools: false }),
  );
}

It's important to note that for CommonJS, this will be transpiled to require (further details can be found here). Therefore, it's reasonable to assume that it still leverages the require cache as mentioned in Electron documentation.


If you implement this approach with electron-react-boilerplate, there might be additional files generated during the yarn package process, like 252.main.prod.js. This could lead to an error upon program execution (Error: Cannot find module '../../src/252.main.prod.js'). To mitigate this issue, instruct Webpack to disregard these files using the example below:

Before:

const sourceMapSupport = require('source-map-support');
sourceMapSupport.install();

After:

import(/* webpackIgnore: true */ 'source-map-support')
  .then((sourceMapSupport) => sourceMapSupport.install())
  .catch(console.error);

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