Samuel Attard 471fe813bb module: avoid allocating a cache key string for every require() ...

The relative resolve cache was keyed by a concatenated
${parent.path}\x00${request} string, allocating a new key for every
require() call including fully cached ones. Key the cache by the
parent directory first (a Map keyed by the already-retained
module.path string) and then by the request (a dictionary object,
whose property access internalizes dynamically-constructed
specifiers). Faster on every measured workload shape and slightly
smaller in memory, since the concatenated keys are no longer
retained.

Signed-off-by: Sam Attard <sattard@anthropic.com>
PR-URL: https://github.com/nodejs/node/pull/63884
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

2026-09-28 23:30:13 +00:00

..

cjs

module: avoid allocating a cache key string for every require()

2026-09-28 23:30:13 +00:00

esm

doc,src,test: fix typos in code comments

2026-09-25 18:14:48 +02:00

customization_hooks.js

module: implement Symbol.dispose in ModuleHooks

2026-07-26 00:59:39 +00:00

helpers.js

vfs: add --vfs-mount and --vfs-load startup flags

2026-09-17 20:38:00 +00:00

package_json_reader.js

vfs: integrate with CJS and ESM module loaders

2026-08-31 10:31:16 +02:00

package_map.js

module: normalize package map paths

2026-09-25 13:49:42 +00:00

run_main.js

vfs: add --vfs-mount and --vfs-load startup flags

2026-09-17 20:38:00 +00:00

typescript.js

lib: remove source map deadcode in type stripping

2026-06-08 16:12:12 +00:00