IncomingForm end event emitted twice (at least)

Support plan

• Which support plan is this issue covered by? Community
• Currently blocking your project/work? no
• Affecting a production system? yes

Context

• Node.js version: v14 and v16 at least
• Release Line of Formidable: Current
• Formidable exact version: 2.0.1 (npm)
• Environment: node, macOS and Linux, does not matter
• Used with (popular names of modules): express

What are you trying to achieve or the steps to reproduce?

let form = new formidable.IncomingForm();

form.on("field", (field, value) => {
    console.log("field", field, value);
});

form.on("end", () => {
    console.log("end");
});

What was the result you got?

Printed “end” twice.

What result did you expect?

Print “end” once. I tested with a simple Postman form with 2 fields.

I bypassed the error using form.once("end") but this doesn’t feel right.

[GrosSacASac]

@marcorocci true but the library should also not emit end twice to begin with

[LatenC]

Same issue happened with me also. I am also using the same version - 2.0.1