How do I initialize cytoscape using Typescript?

I built a React component with Typescript that uses cytoscape (and its types ) as a headless model. My goal is to create an NPM package so that I can directly import it into other projects.

My library:

• Works when I import cytoscape.js into my index.html as a static asset
• Not when I have npm install
  
  my component in the new application ES6: Uncaught ReferenceError: cytoscape is not defined at new WbsLayout
  
  . This is despite the fact that cytoscape is automatically installed in node_modules when I install my component.

Typescript source

WbsLayout.tsx:

export class WbsLayout  {
    //...
    public cy: Cy.Core;
    constructor(graph: any, Options?: Options) {           
        this.cy = cytoscape({ // <-- Works or fails, see cases #1 and #2 explained above
            headless: true,
            elements: graph
        });
        //...
    }
    //...
}

      

        
        
        
      

    

Please note that I am not import cytoscape from 'cytoscape'

(or any similar ways) anywhere in my component source, since I didn’t have any, as it seems that with Typescript and the way of defining cytoscopic images I didn’t use it, t need my component to work with cytoscape imported in html. This might be a problem for the NPN package, though ...

Wbs.tsx:

A simple React component that gets WbsLayout support.

cytoscopic pictograms (relevant part only)

declare namespace Cy {
    //...
    interface Core { }

    //...
    interface Static {
        (options?: Cy.CytoscapeOptions): Core;
        (extensionName: string, foo: string, bar: any): Core;
        version: string;
    }
}

declare module "cytoscape" {
    export = cytoscape;
}
declare var cytoscape: Cy.Static;

      

        
        
        
      

    

Webpack 2 config

Wbs.tsx

, WbsLayout.tsx

and others linked in @nodeject/wbs-react

with Webpack 2:

module.exports = {
  entry: {
    'test/index': './src/test.tsx',
    'dist/index': './src/index.tsx'
  },

  output: {
    filename: "./[name].js",
    libraryTarget: 'umd',
    library: 'wbs-react',
    umdNamedDefine: true
  },

  devtool: "source-map",

  resolve: {
    extensions: [".webpack.js", ".web.js", ".ts", ".tsx", ".js"]
  },

  node: {
    fs: "empty",
    child_process: "empty"
  },

  module: {
    rules: [    
      {
        enforce: 'pre',
        test: /\.js$/,
        loader: "source-map-loader"
      },

      {
        test: /\.tsx?$/,
        loader: "ts-loader"
      },
      {
        test: /\.css$/,
        loader: "style-loader!css-loader"
      },
    ]
  },

  externals: {
    "react": {
      root: 'React',
      commonjs2: 'react',
      commonjs: 'react',
      amd: 'react'
    },

    "react-dom": {
      root: 'ReactDOM',
      commonjs2: 'react-dom',
      commonjs: 'react-dom',
      amd: 'react-dom'
    },

    "cytoscape": {
      root: 'Cy',
      commonjs2: 'cytoscape',
      commonjs: 'cytoscape',
      amd: 'cytoscape'
    },

    "chai": {
      root: 'chai',
      commonjs2: 'chai',
      commonjs: 'chai',
      amd: 'chai'
    }
  }
};

      

        
        
        
      

    

tsconfig.json

{
  "compilerOptions": {
    "outDir": "./temp/",
    "sourceMap": false,
    "noImplicitAny": true,
    "module": "commonjs",
    "target": "es2015",
    "allowSyntheticDefaultImports": true,
    "moduleResolution": "node",
    "jsx": "react"
  },
  "exclude": [
    "node_modules",
    "dist",
    "temp",
    "test"
  ]
}

      

        
        
        
      

    

New source for eS6

import React from 'react';
import ReactDOM from 'react-dom';
import {Wbs, WbsLayout} from '@nodeject/wbs-react';

let graph = {
  nodes: [
    { data: { id: '1' } },
    { data: { id: '1.1', parent: '1' } }
  ],
  edges: [
    { data: { id: 'e1', source: '1', target: '1.1' } }
  ]
};

layout: new WbsLayout(graph); // <-- Fails here (case #2)

ReactDOM.render(<Wbs layout={layout}/>, document.querySelector('#wbs_example'));