Node.js 为什么在调用数据库调用时我的参数没有定义

我正在try 通过GraphQL解析器返回Postgres DB查询.出于某种原因，当我(故意)查询一行不存在的ID时，result返回为未定义.当我记录它时，result总是按预期返回:

result = {
 rows: [],
 ...
}

然而，当我运行它并进行查询时，或者当我使用node inspect index.js并让它一直运行到调试器时，它似乎没有意识到result已经定义.当我在 node 中运行console.log(result)时，当它点击调试器时，我得到以下错误:

debug> console.log(result)
REPL2:1
console.log(result)
            ^

Uncaught ReferenceError: result is not defined
    at REPL2:1:13
    at Script.runInContext (node:vm:139:12)
    at Object.runInContext (node:vm:289:6)
    at REPLServer.controlEval (node:internal/debugger/inspect_repl:578:25)
    at bound (node:domain:421:15)
    at REPLServer.runBound [as eval] (node:domain:432:12)
    at REPLServer.onLine (node:repl:898:10)
    at REPLServer.emit (node:events:527:28)
    at REPLServer.emit (node:domain:475:12)
    at [_onLine] [as _onLine] (node:internal/readline/interface:424:12)

当我在操场上运行查询时，我得到以下错误:

/Users/user/Projects/geolocatr_api/db/queries/user.queries.js:21
          id: user.id,
                   ^

TypeError: Cannot read properties of undefined (reading 'id')
    at /Users/user/Projects/geolocatr_api/db/queries/user.queries.js:21:20
    at Query.<anonymous> (/Users/user/Projects/geolocatr_api/node_modules/pg-pool/index.js:417:18)
    at Query.handleReadyForQuery (/Users/user/Projects/geolocatr_api/node_modules/pg/lib/query.js:138:12)
    at Client._handleReadyForQuery (/Users/user/Projects/geolocatr_api/node_modules/pg/lib/client.js:290:19)
    at Connection.emit (node:events:527:28)
    at /Users/user/Projects/geolocatr_api/node_modules/pg/lib/connection.js:114:12
    at Parser.parse (/Users/user/Projects/geolocatr_api/node_modules/pg-protocol/dist/parser.js:40:17)
    at Socket.<anonymous> (/Users/user/Projects/geolocatr_api/node_modules/pg-protocol/dist/index.js:11:42)
    at Socket.emit (node:events:527:28)
    at addChunk (node:internal/streams/readable:324:12)

Node.js v18.0.0
error Command failed with exit code 1.

我真的不知道为什么我的控制台日志(log)似乎看到了一些东西，但Node没有.否则，当传入表中存在的ID时，它会按预期工作.

代码:

// Resolver

  Query: {
    user: ( _, { id } ) => {
      console.log({id}); // Node recognizes this as the correct number
      return getUserById(id);
    },
  },


// DB Query Function

const getUserById = (id) => {
  return new Promise(function(resolve, reject) {
    db.query(
      `
        SELECT id, first_name, email, phone
        FROM users
        WHERE id = $1;
      `,
      [id],
      function(err, result) {
        // debugger; // Result comes back as not defined
        if (!result.rows) { // Will not run this if block
          console.log(result.rows);
          reject("Could not find user.");
        }
        if (err) reject(err);
        const user = rows[0];

        resolve({
           id: user.id,
           firstName: user.first_name,
           email: user.email,
           phone: user.phone,
        });
      }
    );
  });
};