Available Scripts

In the project directory, you can run:

npm install

Install node_modules beforing running the app.

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

Get HTTPS working in localhost development environment

https://reactpaths.com/how-to-get-https-working-in-localhost-development-environment-f17de34af046
On [Linux], to let the map get your current location because it is not accepted on normal localhost (HTTP), follow these steps:

openssl genrsa -des3 -out rootSSL.key 2048

Create a private key rootSSL.key and provide a pass phrase when asked for.

openssl req -x509 -new -nodes -key rootSSL.key -sha256 -days 1024 -out rootSSL.pem

Create certificate rootSSL.pem file using private key roorSSL.key.
The validity is 1024 days which you can set to any number of days and I recommend the longer the better.
You will be asked a number of questions which you need to answer. For example: VI / HCMC / HCMC / BKU / BKU / Local Certificate / your@email.com

sudo mkdir /usr/local/share/ca-certificates/extra

sudo cp rootSSL.pem /usr/local/share/ca-certificates/extra/rootSSL.crt

sudo update-ca-certificates

Now you can get your current location.