chore: configure codecov reporting (#2032)

.codecov.yml

@@ -1,15 +1,20 @@
-comment: on
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: '50...100'
 
 parsers:
-  javascript:
-    enable_partials: yes
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
 
-coverage:
-  status:
-    project:
-      default:
-        threshold: 4%
-        if_not_found: success
-    patch:
-      default:
-        if_not_found: success
+comment:
+  layout: 'reach,diff,flags,files,footer'
+  behavior: default
+  require_changes: no

.nycrc

@@ -1,10 +1,12 @@
 {
-  "all": true,
+  "include": [
+      "packages/**"
+  ],
   "reporter": [
-    "html",
-    "json",
-    "cobertura"
+      "html",
+      "json",
+      "cobertura"
   ],
   "source-map": true,
   "exclude-after-remap": false
-}
+}