dist/vue.esm.browser.js
function markOnce (
  tree,
  index,
  key
) {
  markStatic(tree, `__once__${index}${key ? `_${key}` : ``}`, true);
  return tree
}
function markOnce (
  tree,
  index,
  key
) {
  markStatic(tree, `__once__${index}${key ? `_${key}` : ``}`, true);
  return tree
}
function markOnce ( tree , index , key ) { markStatic ( tree , ` ${ index } ${ key ? ` ${ key } ` : ` ` } ` , true ) ; return tree }
Runtime helper for v-once.
Effectively it means marking the node as static with a unique key.
Runtime helper for v - once . Effectively it means marking the node as static with a unique key .