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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 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | 34x 34x 34x 34x 791x 17x 17x 17x 2x 17x 17x 17x 2x 2x 2x 2x 2x 17x 34x 17x 17x 2x 2x 2x 17x 2x 2x 17x | import {
NodeTransform,
isSlotOutlet,
processSlotOutlet,
createCallExpression,
SlotOutletNode,
createFunctionExpression,
NodeTypes,
ElementTypes,
resolveComponentType,
TRANSITION
} from '@vue/compiler-dom'
import { SSR_RENDER_SLOT, SSR_RENDER_SLOT_INNER } from '../runtimeHelpers'
import {
SSRTransformContext,
processChildrenAsStatement
} from '../ssrCodegenTransform'
export const ssrTransformSlotOutlet: NodeTransform = (node, context) => {
if (isSlotOutlet(node)) {
const { slotName, slotProps } = processSlotOutlet(node, context)
const args = [
`_ctx.$slots`,
slotName,
slotProps || `{}`,
// fallback content placeholder. will be replaced in the process phase
`null`,
`_push`,
`_parent`
]
// inject slot scope id if current template uses :slotted
if (context.scopeId && context.slotted !== false) {
args.push(`"${context.scopeId}-s"`)
}
let method = SSR_RENDER_SLOT
// #3989
// check if this is a single slot inside a transition wrapper - since
// transition will unwrap the slot fragment into a single vnode at runtime,
// we need to avoid rendering the slot as a fragment.
const parent = context.parent
if (
parent &&
parent.type === NodeTypes.ELEMENT &&
parent.tagType === ElementTypes.COMPONENT &&
resolveComponentType(parent, context, true) === TRANSITION &&
parent.children.filter(c => c.type === NodeTypes.ELEMENT).length === 1
) {
method = SSR_RENDER_SLOT_INNER
if (!(context.scopeId && context.slotted !== false)) {
args.push('null')
}
args.push('true')
}
node.ssrCodegenNode = createCallExpression(context.helper(method), args)
}
}
export function ssrProcessSlotOutlet(
node: SlotOutletNode,
context: SSRTransformContext
) {
const renderCall = node.ssrCodegenNode!
// has fallback content
if (node.children.length) {
const fallbackRenderFn = createFunctionExpression([])
fallbackRenderFn.body = processChildrenAsStatement(node, context)
// _renderSlot(slots, name, props, fallback, ...)
renderCall.arguments[3] = fallbackRenderFn
}
// Forwarded <slot/>. Merge slot scope ids
if (context.withSlotScopeId) {
const slotScopeId = renderCall.arguments[6]
renderCall.arguments[6] = slotScopeId
? `${slotScopeId as string} + _scopeId`
: `_scopeId`
}
context.pushStatement(node.ssrCodegenNode!)
}
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