Currently gillie-api library is provided as is from git repository https://github.com/gillieconsulting/gillie-api. You can add the library to your projects with command:
npm install --save https://github.com/gillieconsulting/gillie-api.git
const GillieApi = require('gillie-api').GillieApi;
const api = new GillieApi(
{publicKey: "...public key here...",
privateKey: "...private key here..."
});
example();
async function example() {
let results = await api.get('/api/customers');
console.log(results);
}