constructor({src, dest}) {
        if (!src) {
            throw new errors.IncorrectUsageError({
                message: tpl(messages.missingConstructorOption.message, {opt: 'src'}),
                context: tpl(messages.missingConstructorOption.context, {opt: 'src'}),
                help: tpl(messages.globalHelp)
            });
        }
        if (!dest) {
            throw new errors.IncorrectUsageError({
                message: tpl(messages.missingConstructorOption.message, {opt: 'dest'}),
                context: tpl(messages.missingConstructorOption.context, {opt: 'dest'}),
                help: tpl(messages.globalHelp)
            });
        }
        this.srcPath = src;
        this.destPath = dest;
    }
```
const Minifier = require('./Minifier');
const minifier = new Minifier({
    src: 'my/src/path',
    dest: 'my/dest/path'
});

minifier.minify({
    'some.css': '*.css',
    'then.js': '!(other).js'
});
```

- Minfier constructor requires a src and a dest
- minify() function takes an object with destination file as the key and source glob as the value
   - globs can be anything tiny-glob supports
   - destination files must end with .css or .js
   - src files will be minified according to their destination file extension