86 lines
2.1 KiB
TypeScript
86 lines
2.1 KiB
TypeScript
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import {
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ComponentInternalInstance,
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ComponentOptions,
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RenderFunction
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} from './component'
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// Expose the HMR runtime on the global object
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// This makes it entirely tree-shakable without polluting the exports and makes
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// it easier to be used in toolings like vue-loader
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// Note: for a component to be eligible for HMR it also needs the __hmrId option
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// to be set so that its instances can be registered / removed.
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if (__BUNDLER__ && __DEV__) {
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const globalObject: any =
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typeof global !== 'undefined'
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? global
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: typeof self !== 'undefined'
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? self
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: typeof window !== 'undefined'
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? window
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: {}
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globalObject.__VUE_HMR_RUNTIME__ = {
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isRecorded: tryWrap(isRecorded),
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createRecord: tryWrap(createRecord),
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rerender: tryWrap(rerender),
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reload: tryWrap(reload)
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}
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}
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interface HMRRecord {
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comp: ComponentOptions
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instances: Set<ComponentInternalInstance>
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}
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const map: Map<string, HMRRecord> = new Map()
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export function registerHMR(instance: ComponentInternalInstance) {
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map.get(instance.type.__hmrId!)!.instances.add(instance)
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}
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export function unregisterHMR(instance: ComponentInternalInstance) {
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map.get(instance.type.__hmrId!)!.instances.delete(instance)
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}
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function isRecorded(id: string): boolean {
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return map.has(id)
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}
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function createRecord(id: string, comp: ComponentOptions) {
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if (map.has(id)) {
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return
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}
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map.set(id, {
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comp,
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instances: new Set()
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})
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}
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function rerender(id: string, newRender: RenderFunction) {
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map.get(id)!.instances.forEach(instance => {
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instance.render = newRender
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instance.renderCache = []
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instance.update()
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// TODO force scoped slots passed to children to have DYNAMIC_SLOTS flag
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})
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}
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function reload(id: string, newComp: ComponentOptions) {
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// TODO
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console.log('reload', id)
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}
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function tryWrap(fn: (id: string, arg: any) => void): Function {
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return (id: string, arg: any) => {
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try {
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fn(id, arg)
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} catch (e) {
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console.error(e)
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console.warn(
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`Something went wrong during Vue component hot-reload. ` +
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`Full reload required.`
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)
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}
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}
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}
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