An Endless Map File (EMF) editor written in JavaScript.

Requirements

Node.js is required to install dependencies and run scripts via npm.

Available Commands

Command	Description
npm install	Install project dependencies
npm start	Build electron and open application
npm run start:web	Build web and open web server running project
npm run start:electron	Build electron and open application
npm run dist	Build web and electron with production settings
npm run dist:web	Build web with production settings
npm run dist:electron	Build electron with production settings
npm run format	Format changed files using Prettier

Writing Code

After cloning the repo, run npm install from your project directory. Then, you can start the application by running npm start.

After starting the application with npm start, webpack will automatically recompile and reload the application when source files change.

Deploying to Web

After you run the npm run dist:web command, the project will be built into dist/web.

If you put the contents of the dist/web folder in a publicly-accessible location (say something like https://example.com), you should be able to open https://example.com/index.html and use the application.

Configure your web server to use ETags for cache validation.

Connected Mode

In the application settings, you will find a section called Connected Mode. When Connected Mode is enabled, graphics will be loaded from the remote Mapper Service specified by the Mapper Service URL setting.

Hosting a Mapper Service

Currently, the steps for creating your own Mapper Service are:

• Set up a web server
• Configure your web server to use ETags for cache validation.
• Configure your web server for CORS
  • Return the response header Access-Control-Allow-Origin: *
  • See: Cross-Origin Resource Sharing
  • See: Access-Control-Allow-Origin
• Serve EGF files from /gfx
• Serve Mapper Assets from /assets
  • Copy the bundled assets out from src/assets/bundled

Forced Connected Mode

If you're hosting an instance of eomap-js and want to lock it to a particular remote Mapper Service, then you can use the FORCE_CONNECTED_MODE_URL environment variable.

When FORCE_CONNECTED_MODE_URL is defined, Connected Mode will be forcibly enabled and the Mapper Service URL will be locked to the specified URL.

Usage examples:

• npm run start:web -- --env FORCE_CONNECTED_MODE_URL="https://example.com"
• npm run dist:web -- --env FORCE_CONNECTED_MODE_URL="https://example.com"