test: use npm by default

Author: Codex-

package.json

@@ -18,7 +18,7 @@
     "typescript:esbuild": "node scripts/unit-typescript-esbuild.js",
     "typescript:vitest": "vitest run",
     "typescript:vitest:dev": "vitest",
-    "unit": "node scripts/unit.js npm",
+    "unit": "node scripts/unit.js",
     "unit:bun": "node scripts/unit.js bun",
     "unit:with-modules": "tap plugin rm @tapjs/typescript && tap plugin list && tap build && tap test/issues/*/test.js test/commonjs/*.js test/module/*.js"
   },

scripts/unit.js

@@ -3,7 +3,7 @@
 const { exec } = require('node:child_process')
 const { argv } = require('node:process')
 
-const child = exec(argv[2] + ' run unit:with-modules')
+const child = exec((argv[2] ?? 'npm') + ' run unit:with-modules')
 
 child.stdout.pipe(process.stdout)
 child.stderr.pipe(process.stderr)