build: fix npm package, redact postinstall script before npm publish

Author: medfreeman

package.json

@@ -14,10 +14,11 @@
   ],
   "main": "target/wasm32-wasi/release/swc_plugin_add_import_extension.wasm",
   "scripts": {
-    "prepublishOnly": "pnpm build:release && pnpm pkg:redact-engines",
+    "prepublishOnly": "pnpm build:release && pnpm pkg:redact-engines && pnpm pkg:redact-postinstall",
     "postinstall": "cargo install cargo-run-bin && cargo bin --install",
     "build:release": "cargo prepublish --release",
     "pkg:redact-engines": "pnpm json -I -f package.json -e 'this.engines=undefined'",
+    "pkg:redact-postinstall": "pnpm json -I -f package.json -e 'this.scripts.postinstall=undefined'",
     "test": "pnpm run test:lib && pnpm run test:e2e",
     "test:lib": "cargo test --release",
     "test:e2e": "pnpm build:release && pnpm test --filter=example-* --workspace-concurrency=1",