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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | 30x 30x 244x 30x 684x 191x 684x 2x 2x 2x 682x 682x 468x 214x 16x 198x 180x 198x 174x | import {
NodeTransform,
NodeTypes,
ElementTypes,
locStub,
createSimpleExpression,
RootNode,
TemplateChildNode,
ParentNode,
findDir,
isBuiltInType
} from '@vue/compiler-dom'
const hasSingleChild = (node: ParentNode): boolean =>
node.children.filter(n => n.type !== NodeTypes.COMMENT).length === 1
export const ssrInjectFallthroughAttrs: NodeTransform = (node, context) => {
// _attrs is provided as a function argument.
// mark it as a known identifier so that it doesn't get prefixed by
// transformExpression.
if (node.type === NodeTypes.ROOT) {
context.identifiers._attrs = 1
}
if (
node.type === NodeTypes.ELEMENT &&
node.tagType === ElementTypes.COMPONENT &&
(isBuiltInType(node.tag, 'Transition') ||
isBuiltInType(node.tag, 'KeepAlive'))
) {
if (hasSingleChild(node)) {
injectFallthroughAttrs(node.children[0])
}
return
}
const parent = context.parent
if (!parent || parent.type !== NodeTypes.ROOT) {
return
}
if (node.type === NodeTypes.IF_BRANCH && hasSingleChild(node)) {
injectFallthroughAttrs(node.children[0])
} else if (hasSingleChild(parent)) {
injectFallthroughAttrs(node)
}
}
function injectFallthroughAttrs(node: RootNode | TemplateChildNode) {
if (
node.type === NodeTypes.ELEMENT &&
(node.tagType === ElementTypes.ELEMENT ||
node.tagType === ElementTypes.COMPONENT) &&
!findDir(node, 'for')
) {
node.props.push({
type: NodeTypes.DIRECTIVE,
name: 'bind',
arg: undefined,
exp: createSimpleExpression(`_attrs`, false),
modifiers: [],
loc: locStub
})
}
}
|