Inferring typescript types based off collections?

[omawhite]

I was wondering if anyone knew of a way to easily infer types from your collections? Currently I'm doing it by hand like so:

// Read markdown file as string
const fullPath = path.join(postsDirectory, fileName);
const fileContents = fs.readFileSync(fullPath, 'utf8');
const matterResult = matter(fileContents);
const matterData = matterResult.data as {
      date: string;
      title: string;
      lastUpdated?: string;
      tags?: string[];
    };

But it would be nice if I could figure out a way from my code to just infer the types somehow. Does anyone have any suggestions.

[GlenLamb]

https://www.staticcms.org/docs/typescript