A complete list of Google Fonts and their sources.

var fonts = require('google-fonts-complete');

console.dir(fonts);

yields

{
    "ABeeZee": {
        "category": "sans-serif",
        "lastModified": "2015-04-06",
        "version": "v4",
        "variants": {
            ...
        }
    },
    ...
}

This list is generated from the Google Fonts API.

Create the api-response.json using a script:

npm run generateList {YOUR_API_KEY}

Or use the Google Fonts API to create api-response.json manually.

Then, use the generator to create google-fonts.json.

npm run generateFonts

or

node ./google-fonts-generator.js