mempool/backend

Setup backend watchers

The backend is static. Typescript scripts are compiled into the dist folder and served through a node web server.

You can avoid the manual shutdown/recompile/restart command line cycle by setting up watchers.

Make sure you are in the backend directory cd backend.

1. Install nodemon

sudo npm install -g nodemon

2. [Optional] Add the following configuration into tsconfig.json. You can find watch options here https://www.typescriptlang.org/docs/handbook/configuring-watch.html

    "watchOptions": {
      "watchFile": "useFsEvents",
      "watchDirectory": "useFsEvents",
      "fallbackPolling": "dynamicPriority",
      "synchronousWatchDirectory": true,
      "excludeDirectories": ["**/node_modules", "_build"],
      "excludeFiles": ["build/fileWhichChangesOften.ts"]
    }

3. In one terminal, watch typescript scripts

./node_modules/typescript/bin/tsc --watch

4. In another terminal, watch compiled javascript

nodemon --max-old-space-size=2048 dist/index.js

Everytime you save a backend .ts file, tsc will recompile it and genereate a new static .js file in the dist folder. nodemon will detect this new file and restart the node web server automatically.