Bundling! 🤘

examples/snowpack/astro.config.mjs

@@ -2,6 +2,7 @@ export default {
  projectRoot: '.',
  astroRoot: './astro',
  dist: './_site',
+ public: './public',
  extensions: {
  '.jsx': 'preact',
  },

examples/snowpack/astro/pages/guides.astro

@@ -73,6 +73,7 @@ let communityGuides;
 
  <div class="card-grid card-grid-4">
  {communityGuides.map((post) => <Card item={post} />)}
+
  <Card item={{
  url: 'https://www.snowpack.dev/posts/2021-01-13-snowpack-3-0',
  img: 'https://www.snowpack.dev/img/social-snowpackv3.jpg',

package.json

@@ -59,6 +59,7 @@
  "postcss-modules": "^4.0.0",
  "react": "^17.0.1",
  "react-dom": "^17.0.1",
+ "rollup": "^2.43.1",
  "sass": "^1.32.8",
  "snowpack": "^3.1.2",
  "svelte": "^3.35.0",

src/@types/astro.ts

@@ -2,6 +2,7 @@ export interface AstroConfigRaw {
  dist: string;
  projectRoot: string;
  astroRoot: string;
+ public?: string;
  jsx?: string;
 }
 
@@ -11,6 +12,7 @@ export interface AstroConfig {
  dist: string;
  projectRoot: URL;
  astroRoot: URL;
+ public?: URL;
  extensions?: Record<string, ValidExtensionPlugins>;
 }
 

src/build.ts

@@ -1,34 +1,65 @@
 import type { AstroConfig } from './@types/astro';
-import { defaultLogOptions, LogOptions } from './logger';
+import type { LogOptions } from './logger';
+import type { LoadResult } from './runtime';
 
-import { loadConfiguration, startServer as startSnowpackServer, build as snowpackBuild } from 'snowpack';
 import { promises as fsPromises } from 'fs';
 import { relative as pathRelative } from 'path';
 import { defaultLogDestination, error } from './logger.js';
 import { createRuntime } from './runtime.js';
+import { bundle, collectDynamicImports } from './build/bundle.js';
+import { collectStatics } from './build/static.js';
 
-const { mkdir, readdir, stat, writeFile } = fsPromises;
+const { mkdir, readdir, readFile, stat, writeFile } = fsPromises;
 
 const logging: LogOptions = {
  level: 'debug',
  dest: defaultLogDestination,
 };
 
-async function* allPages(root: URL): AsyncGenerator<URL, void, unknown> {
+async function* recurseFiles(root: URL): AsyncGenerator<URL, void, unknown> {
  for (const filename of await readdir(root)) {
  const fullpath = new URL(filename, root);
  const info = await stat(fullpath);
 
  if (info.isDirectory()) {
- yield* allPages(new URL(fullpath + '/'));
+ yield* recurseFiles(new URL(fullpath + '/'));
  } else {
- if (/\.(astro|md)$/.test(fullpath.pathname)) {
- yield fullpath;
- }
+ yield fullpath;
+ }
+ }
+}
+
+async function* allPages(root: URL): AsyncGenerator<URL, void, unknown> {
+ for await(const filename of recurseFiles(root)) {
+ if(/\.(astro|md)$/.test(filename.pathname)) {
+ yield filename;
  }
  }
 }
 
+function mergeSet(a: Set<string>, b: Set<string>) {
+ for(let str of b) {
+ a.add(str);
+ }
+ return a;
+}
+
+async function writeFilep(outPath: URL, bytes: string | Buffer, encoding: 'utf-8' | null) {
+ const outFolder = new URL('./', outPath);
+ await mkdir(outFolder, { recursive: true });
+ await writeFile(outPath, bytes, encoding || 'binary');
+}
+
+async function writeResult(result: LoadResult, outPath: URL, encoding: null | 'utf-8') {
+ if(result.statusCode !== 200) {
+ error(logging, 'build', result.error || result.statusCode);
+ //return 1;
+ } else {
+ const bytes = result.contents;
+ await writeFilep(outPath, bytes, encoding);
+ }
+}
+
 export async function build(astroConfig: AstroConfig): Promise<0 | 1> {
  const { projectRoot, astroRoot } = astroConfig;
  const pageRoot = new URL('./pages/', astroRoot);
@@ -39,39 +70,52 @@ export async function build(astroConfig: AstroConfig): Promise<0 | 1> {
  dest: defaultLogDestination,
  };
 
- const runtime = await createRuntime(astroConfig, { logging: runtimeLogging, env: 'build' });
- const { snowpackConfig } = runtime.runtimeConfig;
-
- try {
- const result = await snowpackBuild({
- config: snowpackConfig,
- lockfile: null,
- });
- } catch (err) {
- error(logging, 'build', err);
- return 1;
- }
+ const runtime = await createRuntime(astroConfig, { logging: runtimeLogging });
+ const { runtimeConfig } = runtime;
+ const { snowpack } = runtimeConfig;
+ const resolve = (pkgName: string) => snowpack.getUrlForPackage(pkgName)
+
+ const imports = new Set<string>();
+ const statics = new Set<string>();
 
  for await (const filepath of allPages(pageRoot)) {
  const rel = pathRelative(astroRoot.pathname + '/pages', filepath.pathname); // pages/index.astro
  const pagePath = `/${rel.replace(/\.(astro|md)/, '')}`;
 
  try {
  const outPath = new URL('./' + rel.replace(/\.(astro|md)/, '.html'), dist);
- const outFolder = new URL('./', outPath);
  const result = await runtime.load(pagePath);
 
- if (result.statusCode !== 200) {
- error(logging, 'generate', result.error || result.statusCode);
- //return 1;
- } else {
- await mkdir(outFolder, { recursive: true });
- await writeFile(outPath, result.contents, 'utf-8');
+ await writeResult(result, outPath, 'utf-8');
+ if(result.statusCode === 200) {
+ mergeSet(statics, collectStatics(result.contents.toString('utf-8')));
  }
  } catch (err) {
  error(logging, 'generate', err);
  return 1;
  }
+
+ mergeSet(imports, await collectDynamicImports(filepath, astroConfig, resolve));
+ }
+
+ await bundle(imports, {dist, runtime, astroConfig});
+
+ for(let url of statics) {
+ const outPath = new URL('.' + url, dist);
+ const result = await runtime.load(url);
+
+ await writeResult(result, outPath, null);
+ }
+
+ if(astroConfig.public) {
+ const pub = astroConfig.public;
+ for await(const filename of recurseFiles(pub)) {
+ const rel = pathRelative(pub.pathname, filename.pathname);
+ const outUrl = new URL('./' + rel, dist);
+
+ const bytes = await readFile(filename);
+ await writeFilep(outUrl, bytes, null);
+ }
  }
 
  await runtime.shutdown();