I have a simple Fonts file I am importing with just info right now that contains Arial but will contain others later on.

Fonts.ts

interface Font {
    [key: string]: {
        'full': string,
        'trial': string
    }
}

interface FontList {
    [key: string]: Font
}

export const FONT_LIST: FontList = {
    'Arial':
        {

            'Regular': {
                'full': 'blahblah',
                'trial': 'blahblah'
            },
            'Bold': {
                'full': 'blahblah',
                'trial': 'blahblah'
            },

        },
}

In a function, I am trying to get the value based on their entitlement

import { Fonts } from './Fonts'

function foo(postscriptName:string, style: string) {
     
    const entitlement = "full";

    const selectedFont = FONT_LIST[postscriptName][style][entitlement];

    return selectedFont;
}

For selectedFont, I am getting a TS error of: Type 'string' is not assignable to type '{ family: string; style: string; postscriptName: string; }'

to debug, I even tried selectedFont = FONT_LIST['Arial']['Bold']['full]; to ensure values are there but I am getting the same error.
I am expecting to get back "blahblah".