feat: update to TypeScript 4.0 (#6514)

4 files changed, 18 insertions, 10 deletions

diff --git a/cli/tests/unit/blob_test.ts b/cli/tests/unit/blob_test.ts
index 494c2ac75..7ef9b0125 100644
--- a/cli/tests/unit/blob_test.ts
+++ b/cli/tests/unit/blob_test.ts
@@ -46,11 +46,12 @@ unitTest(function blobShouldNotThrowError(): void {
   let hasThrown = false;
 
   try {
-    const options1: object = {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const options1: any = {
       ending: "utf8",
       hasOwnProperty: "hasOwnProperty",
     };
-    const options2: object = Object.create(null);
+    const options2 = Object.create(null);
     new Blob(["Hello World"], options1);
     new Blob(["Hello World"], options2);
   } catch {
@@ -61,9 +62,9 @@ unitTest(function blobShouldNotThrowError(): void {
 });
 
 unitTest(function nativeEndLine(): void {
-  const options: object = {
+  const options = {
     ending: "native",
-  };
+  } as const;
   const blob = new Blob(["Hello\nWorld"], options);
 
   assertEquals(blob.size, Deno.build.os === "windows" ? 12 : 11);
diff --git a/cli/tests/unit/error_stack_test.ts b/cli/tests/unit/error_stack_test.ts
index cd21d471c..50cc2493b 100644
--- a/cli/tests/unit/error_stack_test.ts
+++ b/cli/tests/unit/error_stack_test.ts
@@ -7,6 +7,7 @@ const { setPrepareStackTrace } = Deno[Deno.internal];
 interface CallSite {
   getThis(): unknown;
   getTypeName(): string | null;
+  // eslint-disable-next-line @typescript-eslint/ban-types
   getFunction(): Function | null;
   getFunctionName(): string | null;
   getMethodName(): string | null;
@@ -35,6 +36,7 @@ function getMockCallSite(
     getTypeName(): string {
       return "";
     },
+    // eslint-disable-next-line @typescript-eslint/ban-types
     getFunction(): Function {
       return (): void => {};
     },
diff --git a/cli/tests/unit/globals_test.ts b/cli/tests/unit/globals_test.ts
index 116df1698..dabe3c08e 100644
--- a/cli/tests/unit/globals_test.ts
+++ b/cli/tests/unit/globals_test.ts
@@ -72,7 +72,8 @@ unitTest(function DenoNamespaceImmutable(): void {
   }
   assert(denoCopy === Deno);
   try {
-    delete window.Deno;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    delete (window as any).Deno;
   } catch {
     // pass
   }
@@ -87,7 +88,8 @@ unitTest(function DenoNamespaceImmutable(): void {
   }
   assert(readFile === Deno.readFile);
   try {
-    delete window.Deno.readFile;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    delete (window as any).Deno.readFile;
   } catch {
     // pass
   }
diff --git a/cli/tests/unit/timers_test.ts b/cli/tests/unit/timers_test.ts
index b7f6dd520..30da0dfe9 100644
--- a/cli/tests/unit/timers_test.ts
+++ b/cli/tests/unit/timers_test.ts
@@ -7,16 +7,19 @@ import {
   assertNotEquals,
 } from "./test_util.ts";
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type AnyRecord = Record<any, any>;
+
 function deferred(): {
-  promise: Promise<{}>;
-  resolve: (value?: {} | PromiseLike<{}>) => void;
+  promise: Promise<AnyRecord>;
+  resolve: (value?: AnyRecord | PromiseLike<AnyRecord>) => void;
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   reject: (reason?: any) => void;
 } {
-  let resolve: (value?: {} | PromiseLike<{}>) => void;
+  let resolve: (value?: AnyRecord | PromiseLike<AnyRecord>) => void;
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   let reject: ((reason?: any) => void) | undefined = undefined;
-  const promise = new Promise<{}>((res, rej): void => {
+  const promise = new Promise<AnyRecord>((res, rej): void => {
     resolve = res;
     reject = rej;
   });