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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 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | 84x 84x 84x 2676x 2676x 1100x 440x 8x 432x 660x 1576x 1x 1575x 51x 1576x | import {
VNode,
VNodeProps,
createVNode,
VNodeArrayChildren,
Fragment,
Text,
Comment,
isVNode
} from './vnode'
import { Teleport, TeleportProps } from './components/Teleport'
import { Suspense, SuspenseProps } from './components/Suspense'
import { isObject, isArray } from '@vue/shared'
import { RawSlots } from './componentSlots'
import {
FunctionalComponent,
Component,
ComponentOptions,
ConcreteComponent
} from './component'
import { EmitsOptions } from './componentEmits'
import { DefineComponent } from './apiDefineComponent'
// `h` is a more user-friendly version of `createVNode` that allows omitting the
// props when possible. It is intended for manually written render functions.
// Compiler-generated code uses `createVNode` because
// 1. it is monomorphic and avoids the extra call overhead
// 2. it allows specifying patchFlags for optimization
/*
// type only
h('div')
// type + props
h('div', {})
// type + omit props + children
// Omit props does NOT support named slots
h('div', []) // array
h('div', 'foo') // text
h('div', h('br')) // vnode
h(Component, () => {}) // default slot
// type + props + children
h('div', {}, []) // array
h('div', {}, 'foo') // text
h('div', {}, h('br')) // vnode
h(Component, {}, () => {}) // default slot
h(Component, {}, {}) // named slots
// named slots without props requires explicit `null` to avoid ambiguity
h(Component, null, {})
**/
type RawProps = VNodeProps & {
// used to differ from a single VNode object as children
__v_isVNode?: never
// used to differ from Array children
[Symbol.iterator]?: never
} & Record<string, any>
type RawChildren =
| string
| number
| boolean
| VNode
| VNodeArrayChildren
| (() => any)
// fake constructor type returned from `defineComponent`
interface Constructor<P = any> {
__isFragment?: never
__isTeleport?: never
__isSuspense?: never
new (...args: any[]): { $props: P }
}
// The following is a series of overloads for providing props validation of
// manually written render functions.
// element
export function h(type: string, children?: RawChildren): VNode
export function h(
type: string,
props?: RawProps | null,
children?: RawChildren | RawSlots
): VNode
// text/comment
export function h(
type: typeof Text | typeof Comment,
children?: string | number | boolean
): VNode
export function h(
type: typeof Text | typeof Comment,
props?: null,
children?: string | number | boolean
): VNode
// fragment
export function h(type: typeof Fragment, children?: VNodeArrayChildren): VNode
export function h(
type: typeof Fragment,
props?: RawProps | null,
children?: VNodeArrayChildren
): VNode
// teleport (target prop is required)
export function h(
type: typeof Teleport,
props: RawProps & TeleportProps,
children: RawChildren
): VNode
// suspense
export function h(type: typeof Suspense, children?: RawChildren): VNode
export function h(
type: typeof Suspense,
props?: (RawProps & SuspenseProps) | null,
children?: RawChildren | RawSlots
): VNode
// functional component
export function h<P, E extends EmitsOptions = {}>(
type: FunctionalComponent<P, E>,
props?: (RawProps & P) | ({} extends P ? null : never),
children?: RawChildren | RawSlots
): VNode
// catch-all for generic component types
export function h(type: Component, children?: RawChildren): VNode
// concrete component
export function h<P>(
type: ConcreteComponent | string,
children?: RawChildren
): VNode
export function h<P>(
type: ConcreteComponent<P> | string,
props?: (RawProps & P) | ({} extends P ? null : never),
children?: RawChildren
): VNode
// component without props
export function h(
type: Component,
props: null,
children?: RawChildren | RawSlots
): VNode
// exclude `defineComponent` constructors
export function h<P>(
type: ComponentOptions<P>,
props?: (RawProps & P) | ({} extends P ? null : never),
children?: RawChildren | RawSlots
): VNode
// fake constructor type returned by `defineComponent` or class component
export function h(type: Constructor, children?: RawChildren): VNode
export function h<P>(
type: Constructor<P>,
props?: (RawProps & P) | ({} extends P ? null : never),
children?: RawChildren | RawSlots
): VNode
// fake constructor type returned by `defineComponent`
export function h(type: DefineComponent, children?: RawChildren): VNode
export function h<P>(
type: DefineComponent<P>,
props?: (RawProps & P) | ({} extends P ? null : never),
children?: RawChildren | RawSlots
): VNode
// Actual implementation
export function h(type: any, propsOrChildren?: any, children?: any): VNode {
const l = arguments.length
if (l === 2) {
if (isObject(propsOrChildren) && !isArray(propsOrChildren)) {
// single vnode without props
if (isVNode(propsOrChildren)) {
return createVNode(type, null, [propsOrChildren])
}
// props without children
return createVNode(type, propsOrChildren)
} else {
// omit props
return createVNode(type, null, propsOrChildren)
}
} else {
if (l > 3) {
children = Array.prototype.slice.call(arguments, 2)
} else if (l === 3 && isVNode(children)) {
children = [children]
}
return createVNode(type, propsOrChildren, children)
}
}
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