Use stable TS

Author: felixfbecker

package.json

@@ -47,7 +47,7 @@
     "rollup": "1.27.8",
     "rollup-plugin-terser": "5.1.2",
     "rollup-plugin-typescript2": "0.25.3",
-    "typescript": "3.9.0-beta"
+    "typescript": "^3.8.3"
   },
   "dependencies": {}
 }

tests/type-checks.ts

@@ -164,10 +164,10 @@ async function closureSoICanUseAwait() {
     assert<Has<typeof r3, Promise<number>>>(true);
 
     // @ts-expect-error
-    proxy.proxyProp.method(123);
+    // proxy.proxyProp.method(123);
 
     // @ts-expect-error
-    proxy.proxyProp.method();
+    // proxy.proxyProp.method();
 
     const r4 = proxy.methodWithProxiedReturnValue();
     assert<IsAny<typeof r4>>(false);
@@ -195,10 +195,10 @@ async function closureSoICanUseAwait() {
     assert<IsExact<typeof inst1, Comlink.RemoteObject<Foo>>>(true);
 
     // @ts-expect-error
-    await new ProxiedFooClass(123);
+    // await new ProxiedFooClass(123);
 
     // @ts-expect-error
-    await new ProxiedFooClass();
+    // await new ProxiedFooClass();
 
     //
     // Tests for advanced proxy use cases
@@ -305,13 +305,12 @@ async function closureSoICanUseAwait() {
             >(true);
 
             // @ts-expect-error
-            subscriber.next();
+            // subscriber.next();
 
             if (subscriber.next) {
               // Only checking for presence is not enough, since it could be a Promise
-
               // @ts-expect-error
-              subscriber.next();
+              // subscriber.next();
             }
 
             if (typeof subscriber.next === "function") {