TypeError [ERR_INVALID_ARG_TYPE]：“id”参数必须是字符串类型

Question

I'm working on an NPM package to make a command handler for Discord. I get the following error:

(node:9400) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "id" argument must be of type string. Received undefined.

he error says that is in line:

switch (_f.label) {

I tried all but I dont have a solution

Answer 1

The value in the switch statement should be of the same type as the values in the case statements.

In your sample, the value in switch is a string , and the cases are number s.

Make them all of the same type:

switch(parseInt(label)) {

or

case "0":
case "1":
...