Fix query#groupEvery().

backport from liyad (dbe126b98c5f1e08b711e580e9d524f82861325d).
shellyln · Sep 12, 2018 · eb9984f · eb9984f
1 parent 6a6f3a6
commit eb9984f
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/packages/red-agate/src/red-agate/data.ts b/packages/red-agate/src/red-agate/data.ts
@@ -79,6 +79,11 @@ export class Query<T> {
                 if (w.single < r.data[0].length) {
                     r.data.push([]);
                 }
+            } else {
+                if (w.first < r.data[0].length) {
+                    // case of w.first === 0
+                    r.data.unshift([]);
+                }
             }
             if (r.data.length > 1) {
                 if (r.data[r.data.length - 1].length > w.last) {