perf(alias): avoid per-resolve split("*") in AliasUtils scan (#529)

Author: alexander-akait

.changeset/neat-toys-serve.md

@@ -0,0 +1,5 @@
+---
+"enhanced-resolve": patch
+---
+
+Improved performance of the alias plugin.

benchmark/README.md

@@ -116,6 +116,7 @@ export default function register(bench, { caseName, caseDir, fixtureDir }) {
 | `main-files`              | Custom `mainFiles: ["main", "entry", "index"]` walked by UseFilePlugin                                       |
 | `description-files-multi` | `descriptionFiles: [package.json, bower.json, component.json]` walked per directory                          |
 | `many-extensions-miss`    | Worst-case extension probing: 5 misses + 1 hit per resolve for a 6-extension list                            |
+| `alias-wildcard-scan`     | Scan of 100 aliases where one is a wildcard (`pkg-*`) — isolates AliasUtils per-item wildcard-detection cost |
 
 Add new cases by creating a new directory under `cases/` — `run.mjs` will
 pick it up automatically on the next run.

benchmark/cases/alias-wildcard-scan/fixture/src/target/a.js

@@ -0,0 +1 @@
+module.exports = "a";

benchmark/cases/alias-wildcard-scan/fixture/src/target/b.js

@@ -0,0 +1 @@
+module.exports = "b";

benchmark/cases/alias-wildcard-scan/fixture/src/target/c.js

@@ -0,0 +1 @@
+module.exports = "c";

benchmark/cases/alias-wildcard-scan/fixture/src/target/d.js

@@ -0,0 +1 @@
+module.exports = "d";

benchmark/cases/alias-wildcard-scan/fixture/src/target/e.js

@@ -0,0 +1 @@
+module.exports = "e";

benchmark/cases/alias-wildcard-scan/fixture/src/target/f.js

@@ -0,0 +1 @@
+module.exports = "f";

benchmark/cases/alias-wildcard-scan/fixture/src/target/g.js

@@ -0,0 +1 @@
+module.exports = "g";

benchmark/cases/alias-wildcard-scan/fixture/src/target/h.js

@@ -0,0 +1 @@
+module.exports = "h";