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, 15 insertions, 21 deletions

diff --git a/std/encoding/toml.ts b/std/encoding/toml.ts
index 3b4b03d20..0cbd51ba0 100644
--- a/std/encoding/toml.ts
+++ b/std/encoding/toml.ts
@@ -393,11 +393,9 @@ function joinKeys(keys: string[]): string {
   // Dotted keys are a sequence of bare or quoted keys joined with a dot.
   // This allows for grouping similar properties together:
   return keys
-    .map(
-      (str: string): string => {
-        return str.match(/[^A-Za-z0-9_-]/) ? `"${str}"` : str;
-      }
-    )
+    .map((str: string): string => {
+      return str.match(/[^A-Za-z0-9_-]/) ? `"${str}"` : str;
+    })
     .join(".");
 }
 
@@ -417,24 +415,20 @@ class Dumper {
   _parse(obj: Record<string, unknown>, keys: string[] = []): string[] {
     const out = [];
     const props = Object.keys(obj);
-    const propObj = props.filter(
-      (e: string): boolean => {
-        if (obj[e] instanceof Array) {
-          const d: unknown[] = obj[e] as unknown[];
-          return !this._isSimplySerializable(d[0]);
-        }
-        return !this._isSimplySerializable(obj[e]);
+    const propObj = props.filter((e: string): boolean => {
+      if (obj[e] instanceof Array) {
+        const d: unknown[] = obj[e] as unknown[];
+        return !this._isSimplySerializable(d[0]);
       }
-    );
-    const propPrim = props.filter(
-      (e: string): boolean => {
-        if (obj[e] instanceof Array) {
-          const d: unknown[] = obj[e] as unknown[];
-          return this._isSimplySerializable(d[0]);
-        }
-        return this._isSimplySerializable(obj[e]);
+      return !this._isSimplySerializable(obj[e]);
+    });
+    const propPrim = props.filter((e: string): boolean => {
+      if (obj[e] instanceof Array) {
+        const d: unknown[] = obj[e] as unknown[];
+        return this._isSimplySerializable(d[0]);
       }
-    );
+      return this._isSimplySerializable(obj[e]);
+    });
     const k = propPrim.concat(propObj);
     for (let i = 0; i < k.length; i++) {
       const prop = k[i];