trending/scriptc
1
0
Fork 0
mirror of https://github.com/vercel-labs/scriptc.git synced 2026-10-30 07:14:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Record corpus 5973's preflight baseline and skip the scaling test under ASan

Browse Source 
The order-parity baseline for the new corpus program records its module
order and empty preflight diagnostics. Uncached sanitized builds rebuild
the runtime for every compile, which takes longer than either measured
size, so the compile-time growth test runs in the plain lane only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Malte Ubl
2026-10-18 06:23:52 -07:00
co-authored by Claude Opus 5.5
parent 8c8ee28413
commit 9118cbc258
2 changed files with 26 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
packages/compiler/test/ts7/baselines/order-parity/tests/corpus/5973-large-closure-environment.ts.json
+6
View File
@@ -0,0 +1,6 @@
{
"order": [
"<repo>/tests/corpus/5973-large-closure-environment.ts"
],
"diags": []
}
tests/harness/closure-environment-scaling.test.ts
+20 -21
View File
@@ -14,6 +14,8 @@ import { expect, test } from "vitest";
const execFileAsync = promisify(execFile);
const repoRoot = join(import.meta.dirname, "../..");
// Sanitized builds compile the runtime with each uncached build, which
// dwarfs both sizes; the growth this test bounds is the same in every lane.
const sanitize = process.env["SCRIPTC_SAN"] === "1";
/** `n` number bindings plus n/20 objects and strings, all captured by a
@@ -83,14 +85,7 @@ async function compileTime(dir: string, n: number): Promise<number> {
writeFileSync(entry, source);
const { stderr } = await execFileAsync(
process.execPath,
[
join(repoRoot, "packages/cli/dist/main.js"),
"build",
entry,
"-o",
binary,
...(sanitize ? ["--sanitize"] : []),
],
[join(repoRoot, "packages/cli/dist/main.js"), "build", entry, "-o", binary],
{
env: { ...process.env, SCRIPTC_TIMING: "1", SCRIPTC_NO_CACHE: "1" },
maxBuffer: 16 * 1024 * 1024,
@@ -113,16 +108,20 @@ async function compileTime(dir: string, n: number): Promise<number> {
return complete - loaded;
}
test("compile time grows linearly with a shared closure environment", async () => {
const dir = mkdtempSync(join(tmpdir(), "scriptc-closure-scaling-"));
try {
const small = await compileTime(dir, 500);
const large = await compileTime(dir, 4000);
// Eight times the bindings. Linear growth stays at or below 8x (fixed
// costs keep it near 5x); the quadratic analyses and code generation
// measured 24x at these sizes, and every doubling beyond adds 4x.
expect(large / small, `${small.toFixed(0)} ms -> ${large.toFixed(0)} ms`).toBeLessThan(16);
} finally {
rmSync(dir, { recursive: true, force: true });
}
}, 300_000);
test.skipIf(sanitize)(
"compile time grows linearly with a shared closure environment",
async () => {
const dir = mkdtempSync(join(tmpdir(), "scriptc-closure-scaling-"));
try {
const small = await compileTime(dir, 500);
const large = await compileTime(dir, 4000);
// Eight times the bindings. Linear growth stays at or below 8x (fixed
// costs keep it near 5x); the quadratic analyses and code generation
// measured 24x at these sizes, and every doubling beyond adds 4x.
expect(large / small, `${small.toFixed(0)} ms -> ${large.toFixed(0)} ms`).toBeLessThan(16);
} finally {
rmSync(dir, { recursive: true, force: true });
}
},
300_000,
);