feat(core): provide information about stalled search to widgets

dev/app/builtin/stories/search-box.stories.js

@@ -20,6 +20,34 @@ export default () => {
         );
       })
     )
+    .add(
+      'display loading indicator',
+      wrapWithHits(container => {
+        window.search.addWidget(
+          instantsearch.widgets.searchBox({
+            container,
+            placeholder: 'Search for products',
+            poweredBy: true,
+            loadingIndicator: true,
+          })
+        );
+      })
+    )
+    .add(
+      'display loading indicator with a template',
+      wrapWithHits(container => {
+        window.search.addWidget(
+          instantsearch.widgets.searchBox({
+            container,
+            placeholder: 'Search for products',
+            poweredBy: true,
+            loadingIndicator: {
+              template: '⚡️',
+            },
+          })
+        );
+      })
+    )
     .add(
       'with custom templates',
       wrapWithHits(container => {
@@ -66,5 +94,32 @@ export default () => {
           })
         );
       })
+    )
+    .add(
+      'with a provided input',
+      wrapWithHits(container => {
+        container.innerHTML = '<input/>';
+        const input = container.firstChild;
+        container.appendChild(input);
+        window.search.addWidget(
+          instantsearch.widgets.searchBox({
+            container: input,
+          })
+        );
+      })
+    )
+    .add(
+      'with a provided input and the loading indicator',
+      wrapWithHits(container => {
+        container.innerHTML = '<input/>';
+        const input = container.firstChild;
+        container.appendChild(input);
+        window.search.addWidget(
+          instantsearch.widgets.searchBox({
+            container: input,
+            loadingIndicator: true,
+          })
+        );
+      })
     );
 };

scripts/validate-commit-msgs.sh

@@ -39,13 +39,13 @@ for sha in `git log --format=oneline "$RANGE" | cut '-d ' -f1`; do
 
   FIRST_LINE=`git log --format=%B -n 1 $sha | head -1`
   MSG_LENGTH=`echo "$FIRST_LINE" | wc -c`
-  if [ $MSG_LENGTH -gt 100 ]; then
+  if echo $FIRST_LINE | grep -qE '^Merge (pull request|branch)'; then
+    echo "OK (merge)"
+  elif [ $MSG_LENGTH -gt 100 ]; then
     echo "KO (too long): $FIRST_LINE"
     EXIT=2
   elif echo $FIRST_LINE | grep -qE '^v\d+\.\d+\.\d+(-beta\.\d+)?'; then
     echo "OK (version)"
-  elif echo $FIRST_LINE | grep -qE '^Merge (pull request|branch)'; then
-    echo "OK (merge)"
   elif echo $FIRST_LINE | grep -qE '^(feat|fix|docs?|style|refactor|perf|tests?|chore|revert)(\(.+\))?: .*'; then
     echo "OK"
   else