fix(reactivity): trigger iteration effect on Map.set

fix #709
2020-02-18 00:09:24 -05:00
parent cb03362b08
commit e1c9153b9e
2 changed files with 19 additions and 2 deletions
--- a/packages/reactivity/src/effect.ts
+++ b/packages/reactivity/src/effect.ts
@@ -184,8 +184,12 @@ export function trigger(
    if (key !== void 0) {
      addRunners(effects, computedRunners, depsMap.get(key))
    }
-    // also run for iteration key on ADD | DELETE
-    if (type === TriggerOpTypes.ADD || type === TriggerOpTypes.DELETE) {
+    // also run for iteration key on ADD | DELETE | Map.SET
+    if (
+      type === TriggerOpTypes.ADD ||
+      type === TriggerOpTypes.DELETE ||
+      (type === TriggerOpTypes.SET && target instanceof Map)
+    ) {
      const iterationKey = isArray(target) ? 'length' : ITERATE_KEY
      addRunners(effects, computedRunners, depsMap.get(iterationKey))
    }