feat: remove explicit types from InjectMetric

Implements support for NestJS v10

Closes #1770

Signed-off-by: Will Soto <willsoto@users.noreply.github.com>

src/injector.ts

@@ -20,14 +20,6 @@ import { getToken } from "./metrics";
  * }
  * ```
  */
-export function InjectMetric(
-  name: string,
-): (
-  target: object,
-  key: string | symbol | undefined,
-  index?: number | undefined,
-) => void {
-  const token = getToken(name);
-
-  return Inject(token);
+export function InjectMetric(name: string) {
+  return Inject(getToken(name));
 }

test/metrics/counter.spec.ts

@@ -4,10 +4,10 @@ import { expect } from "chai";
 import * as client from "prom-client";
 import { Counter, register } from "prom-client";
 import {
-  getToken,
   InjectMetric,
-  makeCounterProvider,
   PrometheusModule,
+  getToken,
+  makeCounterProvider,
 } from "../../src";
 
 describe("Counter", function () {