Ts refactor

[lamuertepeluda]

Hi @kinotto ,

I also made the .ts refactor. Sorry if it looks like a deep rewrite, I also added a prettier configuration.

Main Changes

• This refactor does also include source maps.
• You won't even need two separate config files for webpack, nor a different node version.
• Both geonames.js and geonames.min.js will work on both browser and node.
• I also excluded axios from the bundle using externals, so the user will need to include it by him/herself (which is correct, I think).
• Tests were tuned accordingly
• Browser test requires username as querystring param, e.g., if you are serving from localhost:3000: http://localhost:3000/spec/test-browser.html?username=demo
• I added prettier in order to get automatic and uniform formatting with vscode

Generated bundle sizes

Comparison of bundle sizes

Before

-rw-r--r--  1 vito  staff    16K Jul 25 12:18 geonames.min.js
-rw-r--r--  1 vito  staff   2.2K Jul 25 12:18 geonames.min.node.js

Now

total 56
-rw-r--r--  1 vito  staff   9.6K Jul 25 12:19 geonames.js
-rw-r--r--  1 vito  staff   8.0K Jul 25 12:19 geonames.js.map
-rw-r--r--  1 vito  staff   4.3K Jul 25 12:19 geonames.min.js

So now the minified version (which works on both node and browser) is slightly bigger in size than previous node version, but that may be due to umd an ts transpiling boilerplate. But it's still 1/4 of the prevous browser version! :)

[kinotto]

everything looks good, i will make some tiny changes on the doc and release the new version by tonight. thx again