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/flags/mod.ts b/std/flags/mod.ts
index 952315319..19defd1ed 100644
--- a/std/flags/mod.ts
+++ b/std/flags/mod.ts
@@ -79,11 +79,9 @@ export function parse(
           ? [options.boolean]
           : options.boolean;
 
-      booleanArgs.filter(Boolean).forEach(
-        (key: string): void => {
-          flags.bools[key] = true;
-        }
-      );
+      booleanArgs.filter(Boolean).forEach((key: string): void => {
+        flags.bools[key] = true;
+      });
     }
   }
 
@@ -114,11 +112,9 @@ export function parse(
       flags.strings[key] = true;
       const alias = get(aliases, key);
       if (alias) {
-        alias.forEach(
-          (alias: string): void => {
-            flags.strings[alias] = true;
-          }
-        );
+        alias.forEach((alias: string): void => {
+          flags.strings[alias] = true;
+        });
       }
     });
   }