问如何在TypeScript中测试未知对象中的密钥？

EN

function isFullOfGreatThings (input: unknown): boolean {
  try {
    return Boolean((input as any)?.things?.[0]);
  }
  catch {
    return false;
  }
}

"use strict";
function isFullOfGreatThings(input) {
    try {
        return Boolean(input?.things?.[0]);
    }
    catch {
        return false;
    }
}
const inputs = [
    { get things() { throw new Error('Oops'); } },
    { things: { get 0() { throw new Error(`It's a trap`); } } },
    'hello',
    2,
    false,
    true,
    null,
    ['a', 'b', 'c'],
    { a: 1 },
    { things: ['something special'] },
    { things: 'text' },
    { things: { nested: 'things' } },
    Symbol('snowflake'),
    BigInt(0),
];
for (const input of inputs) {
    console.log(input, isFullOfGreatThings(input));
}