Merge pull request #374 from vim-denops/improve-call-error-message

👍 Improve error message of `call`

Author: lambdalisue

denops/@denops-private/service.ts

@@ -173,7 +173,14 @@ class Plugin {
   }
 
   async call(fn: string, ...args: unknown[]): Promise<unknown> {
-    return await this.#denops.dispatcher[fn](...args);
+    try {
+      return await this.#denops.dispatcher[fn](...args);
+    } catch (err) {
+      const errMsg = err.message ?? err;
+      throw new Error(
+        `Failed to call '${fn}' API in '${this.name}': ${errMsg}`,
+      );
+    }
   }
 }
 

denops/@denops-private/service_test.ts

@@ -311,7 +311,7 @@ Deno.test("Service", async (t) => {
           ],
         });
         assert(typeof err === "string");
-        assertMatch(err, /invalid call/);
+        assertMatch(err, /Failed to call 'test' API in 'dummy': invalid call/);
       } finally {
         s.restore();
       }