[Fix] allow npx resolve to work

Fixes #316.

.github/workflows/executable.yml

@@ -0,0 +1,19 @@
+name: resolve executable
+
+on: [push, pull_request]
+
+jobs:
+  _:
+    name: cli
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ljharb/actions/node/install@main
+      - run: "[ $(./bin/resolve fs) = 'fs' ]"
+        name: run inside the package with a direct path
+      - run: "npm link && [ $(resolve fs) = 'fs' ] && npm uninstall -g resolve"
+        name: run linked as a global in the PATH
+      - run: "[ $(npx resolve fs) = 'fs' ]"
+        name: run via npx

bin/resolve

@@ -11,7 +11,7 @@ if (
         !process.argv
         || process.argv.length < 2
         || (process.argv[1] !== __filename && fs.statSync(process.argv[1]).ino !== fs.statSync(__filename).ino)
-        || (process.env._ && fs.realpathSync(path.resolve(process.env._)) !== __filename)
+        || (process.env.npm_lifecycle_event !== 'npx' && process.env._ && fs.realpathSync(path.resolve(process.env._)) !== __filename)
     )
 ) {
     console.error('Error: `resolve` must be run directly as an executable');