hledger-web-reports/tools/hooks.js

// When's source-first development pattern; production resolves compiled .js files.
import { existsSync } from 'node:fs';
import { fileURLToPath } from 'node:url';

export function resolve(specifier, context, nextResolve) {
	const relative = specifier.startsWith('./') || specifier.startsWith('../');
	if (relative && specifier.endsWith('.js') && context.parentURL?.startsWith('file:')) {
		const source = specifier.slice(0, -3) + '.ts';
		const url = new URL(source, context.parentURL);
		if (existsSync(fileURLToPath(url))) return nextResolve(source, context);
	}
	return nextResolve(specifier, context);
}