use node-redis with node 8 util.promisify

Question

node -v : 8.1.2

I use redis client node_redis with node 8 util.promisify , no blurbird.

the callback redis.get is ok, but promisify type get error message

TypeError: Cannot read property 'internal_send_command' of undefined
at get (D:\Github\redis-test\node_modules\redis\lib\commands.js:62:24)
at get (internal/util.js:229:26)
at D:\Github\redis-test\app.js:23:27
at Object. (D:\Github\redis-test\app.js:31:3)
at Module._compile (module.js:569:30)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:503:32)
at tryModuleLoad (module.js:466:12)
at Function.Module._load (module.js:458:3)
at Function.Module.runMain (module.js:605:10)

my test code

const util = require('util');  var redis = require("redis"),     client = redis.createClient({         host: "192.168.99.100",         port: 32768,     });  let get = util.promisify(client.get);  (async function () {     client.set(["aaa", JSON.stringify({         A: 'a',         B: 'b',         C: "C"     })]);      client.get("aaa", (err, value) => {         console.log(`use callback: ${value}`);     });      try {         let value = await get("aaa");         console.log(`use promisify: ${value}`);     } catch (e) {         console.log(`promisify error:`);         console.log(e);     }      client.quit(); })() 

Answer 1

changing let get = util.promisify(client.get);

to let get = util.promisify(client.get).bind(client);

solved it for me :)