Update to TypeScript 3.7 (#3275)

and update to prettier 1.19

Also, update `assert()` and remove not null assertions where possibly
in `cli`.

Closes #3273

1 files changed, 6 insertions, 10 deletions

diff --git a/std/fs/move_test.ts b/std/fs/move_test.ts
index fc0141d8e..d45ae1cf5 100644
--- a/std/fs/move_test.ts
+++ b/std/fs/move_test.ts
@@ -182,11 +182,9 @@ test(function moveSyncDirectoryIfSrcNotExists(): void {
   const srcDir = path.join(testdataDir, "move_sync_test_src_1");
   const destDir = path.join(testdataDir, "move_sync_test_dest_1");
   // if src directory not exist
-  assertThrows(
-    (): void => {
-      moveSync(srcDir, destDir);
-    }
-  );
+  assertThrows((): void => {
+    moveSync(srcDir, destDir);
+  });
 });
 
 test(function moveSyncDirectoryIfDestNotExists(): void {
@@ -213,11 +211,9 @@ test(function moveSyncFileIfSrcNotExists(): void {
   const destFile = path.join(testdataDir, "move_sync_test_dest_3", "test.txt");
 
   // if src directory not exist
-  assertThrows(
-    (): void => {
-      moveSync(srcFile, destFile);
-    }
-  );
+  assertThrows((): void => {
+    moveSync(srcFile, destFile);
+  });
 });
 
 test(function moveSyncFileIfDestExists(): void {