在下面的代码中，我得到了这个错误:

TypeError [ERR_INVALID_ARG_TYPE]: The "original" argument must be of type Function. Received type undefined

const sqlite3 = require('sqlite3').verbose();
const util = require('util');

async function getDB() {
  return new Promise(function(resolve, reject) {
    let db = new sqlite3.Database('./project.db', (err) => {
      if (err) {
        console.error(err.message);
        reject(err)
      } else {
        console.log('Connected to the project database.');
        resolve(db)
      }
    });
    return db
  });
}


try {
  // run these statements once to set up the db
  let db = getDB();
  db.run(`CREATE TABLE services(id INTEGER PRIMARY KEY, service text, date text)`);
  db.run(`INSERT INTO services(id, service, date) VALUES (1, 'blah', '01-23-1987')`)
} catch(err) {
  console.log(err)
}


const db = getDB();
const dbGetAsync = util.promisify(db.get);

exports.get = async function(service) {

  let sql = `SELECT Id id,
    Service service,
    Date date
    FROM services
    WHERE service  = ?`;

  const row = await dbGetAsync(sql, [service], (err, row) => {
    if (err) {
      console.error(err.message);
      reject(err)
    }
    let this_row = {'row': row.id, 'service': row.service};
    this_row ? console.log(row.id, row.service, row.date) : console.log(`No service found with the name ${service}`);
    resolve(this_row)
  });

  return row;
}

let row = exports.get('blah')

它说问题在第 31 行:const dbGetAsync = util.promisify(db.get);

$ mocha src/tests/testStates.js
C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\node_modules\yargs\yargs.js:1163
      else throw err
           ^

    TypeError [ERR_INVALID_ARG_TYPE]: The "original" argument must be of type Function. Received type undefined
        at Object.promisify (internal/util.js:256:11)
        at Object.<anonymous> (C:\Users\Cody\Projects\goggle-indexer\src\state.js:32:25)
        at Module._compile (internal/modules/cjs/loader.js:701:30)
        at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
        at Module.load (internal/modules/cjs/loader.js:600:32)
        at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
        at Function.Module._load (internal/modules/cjs/loader.js:531:3)
        at Module.require (internal/modules/cjs/loader.js:637:17)
        at require (internal/modules/cjs/helpers.js:22:18)
        at Object.<anonymous> (C:\Users\Cody\Projects\goggle-indexer\src\tests\testStates.js:7:15)
        at Module._compile (internal/modules/cjs/loader.js:701:30)
        at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
        at Module.load (internal/modules/cjs/loader.js:600:32)
        at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
        at Function.Module._load (internal/modules/cjs/loader.js:531:3)
        at Module.require (internal/modules/cjs/loader.js:637:17)
        at require (internal/modules/cjs/helpers.js:22:18)
        at C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:330:36
        at Array.forEach (<anonymous>)
        at Mocha.loadFiles (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:327:14)
        at Mocha.run (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:804:10)
        at Object.exports.singleRun (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\cli\run-helpers.js:207:16)
        at exports.runMocha (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\cli\run-helpers.js:300:13)
        at Object.exports.handler.argv [as handler] (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\cli\run.js:296:3)
        at Object.runCommand (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\node_modules\yargs\lib\command.js:242:26)
        at Object.parseArgs [as _parseArgs] (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\node_modules\yargs\yargs.js:1087:28)
        at Object.parse (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\node_modules\yargs\yargs.js:566:25)
        at Object.exports.main (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\lib\cli\cli.js:63:6)
        at Object.<anonymous> (C:\Users\Cody\AppData\Roaming\npm\node_modules\mocha\bin\_mocha:10:23)
        at Module._compile (internal/modules/cjs/loader.js:701:30)
        at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
        at Module.load (internal/modules/cjs/loader.js:600:32)
        at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
        at Function.Module._load (internal/modules/cjs/loader.js:531:3)
        at Function.Module.runMain (internal/modules/cjs/loader.js:754:12)
        at startup (internal/bootstrap/node.js:283:19)
        at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)

我在使用这个 promisify 库时遇到问题。

最佳答案

我收到此错误是因为我使用的是旧 Node 版本 (8.17.0)，将 Node 更新到较新版本 (12.14.0) 修复了此错误。

关于javascript - TypeError [ERR_INVALID_ARG_TYPE] : The "original" argument must be of type Function. 接收类型未定义，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56136805/