refactor: update node example to use new module

The new module had breaking changes to accept Tool types.
These updates modify the codebase to make use of the updates.
This now makes use of the packaging in gptscript.

Signed-off-by: Bill Maxwell <cloudnautique@users.noreply.github.com>

Author: cloudnautique

examples/nodejs-imagegen/README.md

@@ -21,16 +21,6 @@ git clone https://github.com/gptscript-ai/gptscript.git
 
 1. Navigate to the 'examples/nodejs-imagegen' directory and install dependencies.
 
-Python:
-
-*note: You can use a virtual environment to install the python dependencies, just make sure it is activated before running the server.*
-
-```bash
-pip install -r requirements.txt
-```
-
-this will install the python dependencies for the image generation tool.
-
 Node:
 
 ```bash

examples/nodejs-imagegen/cli.py

@@ -11,7 +11,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@gptscript-ai/gptscript": "^0.1.2",
+    "@gptscript-ai/gptscript": "^0.2.0",
     "express": "^4.18.3",
     "express-ws": "^5.0.2",
     "nodemon": "^3.1.0",

examples/nodejs-imagegen/package-lock.json

@@ -32,8 +32,7 @@ app.get('/', (req, res) => {
 app.post('/generate-logo', async (req, res) => {
     const description = req.body.description;
     const artists = getArtistsData();
-    const prompt = `
-    tools: ./tool.gpt
+    const instructions = `
     For each of the three amazing and capable artists described here
     ${JSON.stringify(artists)}
     make sure to include the artistName field in the response. 
@@ -51,8 +50,14 @@ app.post('/generate-logo', async (req, res) => {
         }]
     }
 `;
+    const tool = new gptscript.Tool({
+        tools: ['github.com/gptscript-ai/image-generation'],
+        jsonResponse: true,
+        instructions: instructions,
+    })
+
     try {
-        const output = await gptscript.exec(prompt);
+        const output = await gptscript.exec(tool);
         const cleanedResp = output.trim().replace(/^```json.*/, '').replace(/```/g, '');
         res.json(JSON.parse(cleanedResp));
     } catch (error) {
@@ -63,9 +68,7 @@ app.post('/generate-logo', async (req, res) => {
 
 // Route to request new artists
 app.post('/new-artists', async (req, res) => {
-    const prompt = `
-    tools: sys.write
-
+    const instructions = `
 Create three short graphic artist descriptions and their muses. 
 These should be descriptive and explain their point of view.
 Also come up with a made up name, they each should be from different
@@ -80,8 +83,14 @@ the response format should be json and MUST NOT have other content or formatting
   }]
 }
 `;
+    const tool = new gptscript.Tool({
+        tools: ['sys.write'],
+        jsonResponse: true,
+        instructions: instructions,
+    });
+
     try {
-        const output = await gptscript.exec(prompt);
+        const output = await gptscript.exec(tool);
         const cleanedResp = output.trim().replace(/^```json.*/, '').replace(/```/g, '');
         newArtistsData = JSON.parse(cleanedResp);
         res.json(newArtistsData);