index.ts

import CachePolicy from 'http-cache-semantics';

const request: CachePolicy.Request = {
    url: 'http://example.com/a.txt',
    method: 'GET',
    headers: {
        'accept-encoding': 'gzip, br, zstd'
    }
};

const response: CachePolicy.Response = {
    status: 200,
    headers: {
        'cache-control': 'max-age=300'
    }
};

const policy = new CachePolicy(request, response, { shared: true });

console.log(policy.toObject());

package.json

{
  "name": "test",
  "version": "1.0.0",
  "scripts": {
    "check": "tsc --noEmit"
  },
  "dependencies": {
    "http-cache-semantics": "github:kornelski/http-cache-semantics"
  },
  "devDependencies": {
    "typescript": "^5.8.2"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "noImplicitAny": true
  }
}