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perf(runtime-vapor): `children` helper (#263) 

Co-authored-by: 三咲智子 Kevin Deng <sxzz@sxzz.moe>
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Rizumu Ayaka 2024-07-29 13:54:33 +08:00 committed by GitHub
parent 0fde1e13a9
commit be332dc5a8
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1 changed files with 8 additions and 3 deletions
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11
packages/runtime-vapor/src/dom/template.ts
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@ -13,9 +13,14 @@ export function template(html: string) {
/*! #__NO_SIDE_EFFECTS__ */ /*! #__NO_SIDE_EFFECTS__ */
export function children(node: Node, ...paths: number[]): Node { export function children(node: Node, ...paths: number[]): Node {
for (const idx of paths) { for (const idx of paths) {
for (let i = 0; i <= idx; i++) { // In various situations, select the quickest approach.
node = node[i === 0 ? 'firstChild' : 'nextSibling']! // See https://github.com/vuejs/core-vapor/pull/263
} node =
idx === 0
? node.firstChild!
: idx === 1
? node.firstChild!.nextSibling!
: node.childNodes[idx]
} }
return node return node
} }