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- /* @flow */
- import { getAndRemoveAttr, addRawAttr } from 'compiler/helpers'
- function containVOnce (el: ASTElement): boolean {
- for (const attr in el.attrsMap) {
- if (/^v\-once$/i.test(attr)) {
- return true
- }
- }
- return false
- }
- export function preTransformVOnce (el: ASTElement) {
- if (containVOnce(el)) {
- getAndRemoveAttr(el, 'v-once', true)
- addRawAttr(el, '[[once]]', true)
- }
- }
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