Function setScope

packages/vite/src/node/ssr/ssrTransform.ts:461–471

(node: ESTree.Node, name: string)

  const identifiers: [id: any, stack: ESTree.Node[]][] = []

  const setScope = (node: ESTree.Node, name: string) => {
    let scopeIds = scopeMap.get(node)
    if (scopeIds && scopeIds.has(name)) {
      return
    }
    if (!scopeIds) {
      scopeIds = new Set()
      scopeMap.set(node, scopeIds)
    }
    scopeIds.add(name)
  }

  function isInScope(name: string, parents: ESTree.Node[]) {
    return parents.some((node) => scopeMap.get(node)?.has(name))