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, 16 insertions, 22 deletions

diff --git a/std/testing/mod.ts b/std/testing/mod.ts
index bd7642b81..3b6386d5b 100644
--- a/std/testing/mod.ts
+++ b/std/testing/mod.ts
@@ -203,14 +203,12 @@ function report(result: TestResult): void {
 }
 
 function printFailedSummary(results: TestResults): void {
-  results.cases.forEach(
-    (v): void => {
-      if (!v.ok) {
-        console.error(`${RED_BG_FAIL} ${red(v.name)}`);
-        console.error(v.error);
-      }
+  results.cases.forEach((v): void => {
+    if (!v.ok) {
+      console.error(`${RED_BG_FAIL} ${red(v.name)}`);
+      console.error(v.error);
     }
-  );
+  });
 }
 
 function printResults(
@@ -321,14 +319,12 @@ async function runTestsSerial(
       print(
         GREEN_OK + "     " + name + " " + promptTestTime(end - start, true)
       );
-      results.cases.forEach(
-        (v): void => {
-          if (v.name === name) {
-            v.ok = true;
-            v.printed = true;
-          }
+      results.cases.forEach((v): void => {
+        if (v.name === name) {
+          v.ok = true;
+          v.printed = true;
         }
-      );
+      });
     } catch (err) {
       if (disableLog) {
         print(CLEAR_LINE, false);
@@ -336,15 +332,13 @@ async function runTestsSerial(
       print(`${RED_FAILED} ${name}`);
       print(err.stack);
       stats.failed++;
-      results.cases.forEach(
-        (v): void => {
-          if (v.name === name) {
-            v.error = err;
-            v.ok = false;
-            v.printed = true;
-          }
+      results.cases.forEach((v): void => {
+        if (v.name === name) {
+          v.error = err;
+          v.ok = false;
+          v.printed = true;
         }
-      );
+      });
       if (exitOnFail) {
         break;
       }