fix: ignore non dependency keys in package json

resolves #1921

crates/cli-support/src/js/mod.rs

@@ -2769,17 +2769,18 @@ impl<'a> Context<'a> {
             ),
         };
         let mut iter = object.iter();
-        let (key, value) = match iter.next() {
-            Some(pair) => pair,
-            None => return Ok(()),
-        };
-        if key != "dependencies" || iter.next().is_some() {
-            bail!(
-                "NPM manifest found at `{}` can currently only have one key, \
-                 `dependencies`, and no other fields",
-                path.display()
-            );
+        let mut value = None;
+        while let Some((key, v)) = iter.next() {
+            if key == "dependencies" {
+                value = Some(v);
+                break;
+            }
         }
+        let value = if let Some(value) = value {
+            value
+        } else {
+            return Ok(());
+        };
         let value = match value.as_object() {
             Some(s) => s,
             None => bail!(

crates/cli/tests/wasm-bindgen/npm.rs

@@ -35,8 +35,8 @@ compatible with the `bundler` and `nodejs` targets
 }
 
 #[test]
-fn more_package_json_fields_rejected() {
-    let (mut cmd, _out_dir) = Project::new("more_package_json_fields_rejected")
+fn more_package_json_fields_ignored() {
+    let (mut cmd, _out_dir) = Project::new("more_package_json_fields_ignored")
         .file(
             "src/lib.rs",
             r#"
@@ -63,16 +63,7 @@ fn more_package_json_fields_rejected() {
             "#,
         )
         .wasm_bindgen("");
-    cmd.assert()
-        .stderr(
-            str::is_match(
-                "\
-error: NPM manifest found at `.*` can currently only have one key, .*
-",
-            )
-            .unwrap(),
-        )
-        .failure();
+    cmd.assert().success();
 }
 
 #[test]