Write Demo Script

Help the user create a demo script that demonstrates step-by-step functionality in the Datagrok demo application.

Usage

/write-demo-script [script-name] [--package <package-name>]

Instructions

1. Install the tutorials library

The package must depend on @datagrok-libraries/tutorials:

npm install @datagrok-libraries/tutorials

2. Create the DemoScript class

Create a TypeScript file (e.g., src/demo-app/demo-script.ts) with a function that initializes and runs the demo:

import {DemoScript} from '@datagrok-libraries/tutorials';

export function demo() {
  const demoScript = new DemoScript(
    'Script Name',        // name (required)
    'Script description', // description (required)
    true,                 // isAutomatic: true = auto-advance, false = manual
    {
      autoStartFirstStep: true,  // optional: auto-start first step in manual mode
      path: 'Category/Demo'      // optional: breadcrumb path in the view
    }
  );

  demoScript
    .step('Step 1', async () => {
      grok.shell.addTableView(grok.data.demo.demog());
    }, {description: 'Opens the demographics dataset.', delay: 2000})
    .step('Step 2', async () => {
      grok.shell.addTableView(grok.data.testData('biosensor'));
    }, {description: 'Opens the biosensor dataset.', delay: 2000})
    .step('Final step', async () => console.log('Finished'));

  return demoScript.start();
}

Step parameters

Each .step() call takes:

• name (string, required): step display name
• func (async function, required): the action to perform
• Options object (optional):
  • description (string): text shown to the user during this step
  • delay (number): milliseconds to wait before advancing (for automatic scripts)

3. Register the demo script in package.ts

Add a function with the required metadata annotations to package.ts:

import {demo} from './demo-app/demo-script';

//name: Demo script
//description: Illustrates the work of the demo script
//meta.demoPath: Category | Subcategory | Script Name
//meta.isDemoScript: True
export function demoScript() {
  return new demo();
}

Required annotations

Annotation	Description
meta.demoPath	Path in the demo app, separated by |. Without this, the script will NOT appear in the demo application.
meta.isDemoScript	Must be True. Without this, the script won't render as a demo script with a dedicated view.

Optional annotations

Annotation	Description
description	Tooltip text shown in the demo application UI

4. Build and publish

webpack
grok publish dev

Behavior

• Ask the user for the demo script name, description, and which package it belongs to.
• Ask what steps the demo should include and whether it should be automatic or manual.
• Generate the DemoScript file with properly structured steps.
• Add the registration function to package.ts with the correct meta.demoPath and meta.isDemoScript annotations.
• Use the pipe separator | in meta.demoPath (e.g., Viewers | Charts | My Demo).
• Ensure the @datagrok-libraries/tutorials dependency is present in package.json.
• Follow project coding conventions: no excessive comments, no curly brackets for one-line if/for, catch/else if on new lines.