Experiment: 87be4aa

rad experiment show 87be4aa12d4d932749f36033f8cc9e94ffeb7488

by ee@did:key:z6MkvsiybCuk1WDZhh2aXDx7NTiZejKgWZygMNsUuXDMNvVQ · Apr 11 20:05 2026

types:[node]

Measurements

Metric	BaselineThe benchmark measurement of the unmodified code	CandidateThe code with the proposed optimization applied	DeltaThe performance change from baseline to candidate
tsc_check_ms (ms) primary	1066.000 ms (n=1)	1009.000 ms (n=1)	-5.34%

Annotations

hypothesis	Setting types:[node] prevents tsc auto-loading all 36 @types/* packages in node_modules. Most (aws-lambda, bunyan, chai, memcached, mysql, tedious, ws, etc) are transitively installed and never imported.
what_worked	Samples [5162, 1040, 990, 1008, 1009] ms. Warm median 1009 vs 1066 = -57 ms (-5.3%). Cold run also -600 ms (5764 -> 5162). File count dropped 1350 -> 1291 (-59). Only @types/node is force-included; packages with imports still resolve normally via the package-lookup path.

Base CommitThe starting commit before the optimization was applied	9fad0de6ded07745d50acbf9c5c9965612d5548e
Candidate CommitThe code with the proposed optimization applied	953d0fdfb127fc99c7772a012f4b50384c628c19
Config	optimize.yaml

Diff

~ tsconfig.json

@@ -32,7 +32,7 @@
32     // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
33     // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
34     // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
35-    // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
35+    "types": ["node"],
36     // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
37     // "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
38     // "allowImportingTsExtensions": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */

Environment

Build	true
Tests	true
Arch	aarch64
OS	Darwin 14.6.1
CPU	Apple M2
Agent	pi-autoresearch / pi
Files	tsconfig.json