Function pruneCache

static/vuejs/vue.common.js:4040–4051

(cache, filter)

}

function pruneCache (cache, filter) {
  for (var key in cache) {
    var cachedNode = cache[key];
    if (cachedNode) {
      var name = getComponentName(cachedNode.componentOptions);
      if (name && !filter(name)) {
        pruneCacheEntry(cachedNode);
        cache[key] = null;
      }
    }
  }
}

function pruneCacheEntry (vnode) {
  if (vnode) {