bundle_code() — svelte Function Reference

Architecture documentation for the bundle_code() function in check-treeshakeability.js from the svelte codebase.

Function javascript BuildSystem QualityControl

Entity Profile

BuildSystem→ QualityControl→ bundle_code() — svelte Function Reference

Dependency Diagram

graph TD
  9cca0320_49c1_cecf_c508_0c6d04a737c3["bundle_code()"]
  a1cf3ce1_4e6b_8aaa_e102_ea18e7bc71ed["check-treeshakeability.js"]
  9cca0320_49c1_cecf_c508_0c6d04a737c3 -->|defined in| a1cf3ce1_4e6b_8aaa_e102_ea18e7bc71ed
  style 9cca0320_49c1_cecf_c508_0c6d04a737c3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/svelte/scripts/check-treeshakeability.js lines 12–46

async function bundle_code(entry) {
	const bundle = await rollup({
		input: '__entry__',
		plugins: [
			virtual({
				__entry__: entry
			}),
			{
				name: 'resolve-svelte',
				resolveId(importee) {
					if (importee.startsWith('svelte')) {
						const entry = pkg.exports[importee.replace('svelte', '.')];
						return path.resolve(entry.browser ?? entry.default);
					}
				}
			},
			nodeResolve({
				exportConditions: ['production', 'import', 'browser', 'default']
			})
		],
		onwarn: (warning, handle) => {
			if (warning.code !== 'EMPTY_BUNDLE' && warning.code !== 'CIRCULAR_DEPENDENCY') {
				handle(warning);
			}
		}
	});

	const { output } = await bundle.generate({});

	if (output.length > 1) {
		throw new Error('errr what');
	}

	return output[0].code.trim();
}