fix event emitter type mismatches

[paulsmithkc]

Fixes #49

Adds methods overloads to the Minipass class, which match the signatures required by the EventEmitter base class.

See node:events

[paulsmithkc]

@isaacs Can we get some eyes on this patch?

[isaacs]

Is the issue just that symbol isn't allowed?

Ie, couldn't this work instead?

diff --git a/index.d.ts b/index.d.ts
index 86384b0..6437bad 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -69,7 +69,7 @@ export namespace Minipass {
     : ObjectModeOptions
 
   interface EventArguments {
-    [k: string]: unknown[]
+    [k: string | symbol]: unknown[]
   }
   /**
    * The listing of events that a Minipass class can emit.

[isaacs]

The reason I'm suggesting that is that it's a quite nice type safety feature to have the arguments to event handlers be set as unknown by default for undeclared events, so that they have to be type checked before use, rather than any, which tells TS to ignore them entirely and just lets you do anything.

[paulsmithkc]

@isaacs My proposed changes do preserve type safety for known types. However the overloads are needed and must match exactly with the types in Node's EventEmitter class.

[isaacs]

They don't preserve type safety for undeclared events, though.

What error are you seeing with the latest Minipass publish? I'm using this now in rimraf, glob, and the next-gen version of tap, without any problems.