module loading

package.json

@@ -32,7 +32,9 @@
     "nodeVersion": "20.13.1",
     "asar": true,
     "includeSubNodeModules": true,
-    "electronLanguages": ["en-US"],
+    "electronLanguages": [
+      "en-US"
+    ],
     "files": [
       "cables.json",
       "src/**/*",
@@ -126,6 +128,7 @@
     "jsonfile": "6.1.0",
     "marked": "12.0.2",
     "md5-file": "5.0.0",
+    "mime": "^4.0.4",
     "mkdirp": "2.1.3",
     "moment-mini": "2.29.4",
     "npm": "10.5.2",

src/electron/electron_api.js

@@ -8,6 +8,7 @@ import { promisify } from "util";
 import jsonfile from "jsonfile";
 import sanitizeFileName from "sanitize-filename";
 import { utilProvider } from "cables-shared-api";
+import { createRequire } from "module";
 import cables from "../cables.js";
 import logger from "../utils/logger.js";
 import doc from "../utils/doc_util.js";
@@ -73,6 +74,31 @@ class ElectronApi
             const opDir = opsUtil.getOpAbsolutePath(opName);
             event.returnValue = path.join(opDir, "node_modules", data.moduleName);
         });
+
+        ipcMain.on("getOpModuleFile", (event, data) =>
+        {
+            let opName = opsUtil.getOpNameById(data.opId);
+            if (!opName) opName = data.opName;
+            const opDir = opsUtil.getOpAbsolutePath(opName);
+            const moduleDir = path.join(opDir, "node_modules");
+            const moduleRequire = createRequire(moduleDir);
+            if (moduleRequire)
+            {
+                try
+                {
+                    event.returnValue = helper.pathToFileURL(moduleRequire.resolve(data.moduleName));
+                }
+                catch (e)
+                {
+                    this._log.error(e.message);
+                    event.returnValue = null;
+                }
+            }
+            else
+            {
+                event.returnValue = null;
+            }
+        });
     }
 
     async talkerMessage(cmd, data, topicConfig = {})

src/electron/electron_endpoint.js

@@ -1,6 +1,7 @@
 import { protocol, session, net, shell } from "electron";
 import fs from "fs";
 import path from "path";
+import mime from "mime";
 
 import cables from "../cables.js";
 import logger from "../utils/logger.js";
@@ -444,6 +445,12 @@ class ElectronEndpoint
                 response.headers.append("Content-Range", "bytes 0-" + stats.size + "/" + (stats.size + 1));
                 response.headers.append("Last-Modified", stats.mtime.toUTCString());
             }
+            let mimeType = mime.getType(existingFile);
+            if (mimeType)
+            {
+                if (mimeType === "application/node") mimeType = "text/javascript";
+                response.headers.set("Content-Type", mimeType);
+            }
         }
         catch (e) {}
         return response;

src_client/standalone.js

@@ -224,9 +224,15 @@ export default class CablesStandalone
             }
             catch (e2)
             {
-                const errorMessage = "failed to load node module: " + moduleName;
+                const errorMessage = "require by name:\n" + e2 + "\n\nrequire by path:\n" + e;
+                const options = {
+                    "title": "failed to load node module: " + moduleName,
+                    "codeText": errorMessage.replace(/(.{80})/g, "$1\n")
+                };
+
+                new this.CABLES.UI.ModalError(options);
                 if (op) op.setUiError("oprequire", errorMessage);
-                this._log.error(errorMessage, e2, e);
+                this._log.warn(errorMessage, e2, e);
                 return "";
             }
         }