fix: assert oldMethod existence, and pin typescript version (#1549)

* fix: assert oldMethod existence, and pin typescript version

Author: sofisl

package.json

@@ -87,7 +87,7 @@
     "timekeeper": "^2.0.0",
     "tmp": "0.2.1",
     "ts-node": "^10.7.0",
-    "typescript": "^5.1.6"
+    "typescript": "5.1.6"
   },
   "dependencies": {
     "@google-cloud/common": "^5.0.0",

src/cls/async-hooks.ts

@@ -192,7 +192,11 @@ export class AsyncHooksCLS<Context extends {}> implements CLS<Context> {
       if (ee[method]) {
         shimmer.wrap(ee, method, oldMethod => {
           return function (this: {}, event: string, cb: Func<void>) {
-            return oldMethod.call(this, event, that.bindWithCurrentContext(cb));
+            return oldMethod!.call(
+              this,
+              event,
+              that.bindWithCurrentContext(cb)
+            );
           };
         });
       }

src/index.ts

@@ -51,9 +51,9 @@ let traceAgent: StackdriverTracer;
 function initConfig(userConfig: Forceable<Config>): TopLevelConfig {
   let envSetConfig = {};
   if (process.env.GCLOUD_TRACE_CONFIG) {
-    envSetConfig = require(path.resolve(
-      process.env.GCLOUD_TRACE_CONFIG!
-    )) as Config;
+    envSetConfig = require(
+      path.resolve(process.env.GCLOUD_TRACE_CONFIG!)
+    ) as Config;
   }
   // Configuration order of precedence:
   // 1. Environment Variables

test/test-span-data.ts

@@ -216,10 +216,11 @@ describe('SpanData', () => {
 
       for (const sourceMapType of sourceMapTypes) {
         it(`uses source maps when available in stack traces: ${sourceMapType}`, () => {
-          const {applyGeneric} =
-            require(`./fixtures/source-maps-test/${sourceMapType}`) as {
-              applyGeneric: <T>(fn: () => T) => T;
-            };
+          const {applyGeneric} = require(
+            `./fixtures/source-maps-test/${sourceMapType}`
+          ) as {
+            applyGeneric: <T>(fn: () => T) => T;
+          };
           const spanData = applyGeneric(
             () => new CommonSpanData(trace, 'name', '0', 0)
           );

test/utils.ts

@@ -191,9 +191,9 @@ function getFixturesForModule<T>(moduleName: string): Array<FixtureHelper<T>> {
       return moduleNameMatches && versionCompatible;
     })
     .map(key => {
-      const version =
-        require(`./plugins/fixtures/${key}/node_modules/${moduleName}/package.json`)
-          .version as string;
+      const version = require(
+        `./plugins/fixtures/${key}/node_modules/${moduleName}/package.json`
+      ).version as string;
       const parsedVersion = semver.parse(version)!;
       const getModule: () => T = () => require(`./plugins/fixtures/${key}`);
       // Convenience function -- returns if.skip if the selected module's