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x/packup/generate_static_assets.ts

📦 Zero-config web application packager in Deno
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import { relative, walk } from "./deps.ts";import { logger } from "./logger_util.ts";
type File = Blob & { name: string };
export async function checkStaticDir(dir: string): Promise<boolean> { try { const stat = await Deno.lstat(dir); if (stat.isDirectory) { logger.info(`Using "${dir}" as static directory`); return true; } else { logger.warn(`Error: "${dir}" is not directory`); return false; } } catch (e) { if (e.name === "NotFound") { logger.info(`No static dir "${dir}"`); return false; } logger.error(e); return false; }}
export async function* generateStaticAssets(dir: string): AsyncIterable<File> { if (!await checkStaticDir(dir)) { return; }
for await (const entry of walk(dir)) { if (!entry.isDirectory) { yield createStaticAssetFromPath(entry.path, dir); } }}
export async function* watchAndGenStaticAssets( dir: string,): AsyncIterable<File> { if (!await checkStaticDir(dir)) { return; }
for await (const entry of walk(dir)) { if (!entry.isDirectory) { yield createStaticAssetFromPath(entry.path, dir); } }
for await (const e of Deno.watchFs(dir)) { for (const path of e.paths) { // TODO(kt3k): Make this concurrent try { const stat = await Deno.lstat(path); if (stat.isDirectory) { continue; } yield await createStaticAssetFromPath(path, dir); } catch (e) { logger.error(e); } } }}
async function createStaticAssetFromPath( path: string, root: string,): Promise<File> { logger.debug("Reading", path); const bytes = await Deno.readFile(path); return Object.assign(new Blob([bytes]), { name: relative(root, path) });}