Run JSON-server with multiple database .json files.

util.js

/*
JSON-server is unable to serve multiple files at once.
(https://stackoverflow.com/questions/36836424/cant-watch-multiple-files-with-json-server)
This is a quick script for making a joint db.json file.

Directory structure:

db/
├─ chunks/
│  ├─ example1.json
│  ├─ example2.json
├─ db.json
├─ util.js

The names of the chunk files will constitute as keys in the joint database.
Example chunk .json file structure:

example.json
{
    "data": [
        {
            "key": "field"
        }
    ]
}

To run:         node .\db\util.js
To run server:  json-server --watch --no-cors db.json 
*/

const dbs = './db/chunks';
const fs = require('fs');
const jsons = fs.readdirSync(dbs).filter((filename) => filename.includes('.json'));

fs.writeFileSync('./db/db.json', '');

let db = {};

for (const json of jsons) {
  const data = fs.readFileSync(`./db/chunks/${json}`, 'utf8');
  db[json.slice(0, -5)] = JSON.parse(data)['data'];
}

fs.appendFileSync('./db/db.json', JSON.stringify(db, null, '\t'));