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56 lines
2.1 KiB
JavaScript
56 lines
2.1 KiB
JavaScript
#!/usr/bin/env node
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// The admin bundle is embedded in the server binary and served to a household
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// LAN, so an accidental dependency or a stray asset landing in dist is a
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// regression nobody would otherwise notice: every other gate passes with a
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// bundle twice this size. One number, total bytes of dist/assets — not per
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// chunk, not gzipped — because the failure being caught is "something big
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// arrived", not chunk shape.
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//
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// This runs from admin/ as part of `npm run build`, before stamp-dist: a failed
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// size check must not leave a fresh .src-hash beside an oversized bundle that a
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// later Zig build would accept as current.
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import { readdirSync, statSync } from "node:fs";
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import { dirname, join } from "node:path";
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import { fileURLToPath } from "node:url";
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const BUDGET_BYTES = 800_000;
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const distDir = join(dirname(dirname(fileURLToPath(import.meta.url))), "dist", "assets");
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let entries;
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try {
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entries = readdirSync(distDir, { withFileTypes: true });
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} catch (err) {
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console.error(`assert-bundle-size: cannot read admin/dist/assets: ${err.message}`);
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process.exit(1);
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}
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const files = entries
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.filter((entry) => entry.isFile())
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.map((entry) => ({ name: entry.name, bytes: statSync(join(distDir, entry.name)).size }))
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.sort((a, b) => b.bytes - a.bytes);
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if (files.length === 0) {
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console.error("assert-bundle-size: no files in admin/dist/assets — did the build emit anything?");
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process.exit(1);
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}
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const total = files.reduce((sum, file) => sum + file.bytes, 0);
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const format = (bytes) => bytes.toLocaleString("en-US");
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if (total > BUDGET_BYTES) {
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console.error(
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`assert-bundle-size: admin/dist/assets is ${format(total)} bytes, over the ${format(BUDGET_BYTES)} byte budget.`,
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);
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console.error("Largest chunks:");
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for (const file of files.slice(0, 5)) console.error(` ${format(file.bytes).padStart(9)} ${file.name}`);
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console.error("Drop what arrived, or raise the budget in this script with the reason in the changelog.");
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process.exit(1);
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}
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console.log(
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`admin/dist/assets is ${format(total)} bytes across ${files.length} files, ` +
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`${format(BUDGET_BYTES - total)} under the ${format(BUDGET_BYTES)} byte budget`,
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);
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