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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 67 68 69 70 | 30x 30x 684x 657x 27x 6x 27x 27x 16x 11x 2x 3x 9x 14x 13x 1x 2x 1x 1x 12x | import {
NodeTransform,
NodeTypes,
ElementTypes,
locStub,
createSimpleExpression,
RootNode,
TemplateChildNode,
findDir,
isBuiltInType
} from '@vue/compiler-dom'
export const ssrInjectCssVars: NodeTransform = (node, context) => {
if (!context.ssrCssVars) {
return
}
// _cssVars is initialized once per render function
// the code is injected in ssrCodegenTransform when creating the
// ssr transform context
if (node.type === NodeTypes.ROOT) {
context.identifiers._cssVars = 1
}
const parent = context.parent
if (!parent || parent.type !== NodeTypes.ROOT) {
return
}
if (node.type === NodeTypes.IF_BRANCH) {
for (const child of node.children) {
injectCssVars(child)
}
} else {
injectCssVars(node)
}
}
function injectCssVars(node: RootNode | TemplateChildNode) {
if (
node.type === NodeTypes.ELEMENT &&
(node.tagType === ElementTypes.ELEMENT ||
node.tagType === ElementTypes.COMPONENT) &&
!findDir(node, 'for')
) {
if (isBuiltInType(node.tag, 'Suspense')) {
for (const child of node.children) {
if (
child.type === NodeTypes.ELEMENT &&
child.tagType === ElementTypes.TEMPLATE
) {
// suspense slot
child.children.forEach(injectCssVars)
} else {
injectCssVars(child)
}
}
} else {
node.props.push({
type: NodeTypes.DIRECTIVE,
name: 'bind',
arg: undefined,
exp: createSimpleExpression(`_cssVars`, false),
modifiers: [],
loc: locStub
})
}
}
}
|