~ $ cat a.mjs
import * as mod from "./a.mjs"
export const { a, b, c } = { a: 1, b: 2, c: 3 };  export const d = 4;
console.log(JSON.stringify({                        type: typeof mod,
  keys: Object.keys(mod),
}));
~ $ node a.mjs
{"type":"object","keys":["a","b","c","d"]}
~ $ qjs -m a.mjs
{"type":"object","keys":["d"]}
~ $