Typescript: how to use /types folder for npm package?

How would I use the types for npm packages that don't have @types but instead have their type declarations in their folder? For example, await-to-js (https://www.npmjs.com/package/await-to-js) doesn't have @types/await-to-js, but has a /types folder with the .d.ts declaration file. How can I get my editor to recognize the types for await-to-js?

Here is my tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "skipLibCheck": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    "esModuleInterop": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "incremental": true,
    "baseUrl": ".",
    "paths": {
      "@/*": [
        "src/*"
      ]
    }
  },
  "include": [
    "next-env.d.ts",
    "**/*.ts",
    "**/*.tsx"
  ],
  "exclude": [
    "node_modules"
  ]
}