⚡ perf(vscode): 预览切走标签页时页面留着，切回来不再重新生成、重发文档和整份重画
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@@ -103,6 +103,14 @@ export class PreviewEditorProvider implements CustomTextEditorProvider {
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readonly askFeature: (subject: Uri, request: TopRequest) => Promise<string | undefined>,
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) {}
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/**
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* 注册成预览编辑器。标签页切走时页面留着（`retainContextWhenHidden`）：切回来不用重新生成、重发文档，页面也不用整份重画，
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* 代价是每个开着的预览切走后仍占着它那个页面的内存。
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*/
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register(): Disposable {
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return window.registerCustomEditorProvider(PREVIEW_VIEW_TYPE, this, { webviewOptions: { retainContextWhenHidden: true } })
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}
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/**
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* 用 `show` 打开 `uri` 的预览，把 `request` 交给它：新建的预览解析时带走；`show` 只是切到了已经开着的预览（没有新建）时，交给切到的那个。
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*
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@@ -174,7 +182,10 @@ export class PreviewEditorProvider implements CustomTextEditorProvider {
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}
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class Preview {
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/** webview 发过 ready 之后才发消息；标签页切走时页面被销毁，切回来重新加载、再发 ready，这期间也不发 */
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/**
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* 页面发过 ready（装好了、能收消息）之后才发消息。标签页切走时页面留着，照常收消息，切回来什么都不用补；
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* 页面真的重新加载了（webview 进程崩了重建、开发者重载 webview）会再发 ready，那时整份重发
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*/
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private ready = false
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/** 侧栏「问 AI」打开的：页面准备好后把光标放进顶部输入框 */
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private pendingPathFocus = false
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@@ -215,8 +226,8 @@ class Preview {
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/** 这份文件相比对比基准改了什么：发完文档再算、补发 */
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private readonly diff: PreviewDiff
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/**
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* 随下一份真正发出去的文档走、只走一次：新预览第一份文档要滚到的位置，或页面正在重新加载时收不到的 reveal。
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* 之后页面因标签页切走重新加载，按 webview 自己记的位置恢复
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* 随下一份真正发出去的文档走、只走一次：新预览第一份文档要滚到的位置，或页面 ready 之前又来的 reveal。
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* 之后页面真的重新加载了，按 webview 自己记的位置恢复
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*/
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private pendingReveal: Reveal | undefined
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/** 这个标签页是从哪儿打开的，定对比什么；打开请求没说的（跳定义新开的、VS Code 重启后恢复的）先空着，页面 ready 时按它记着的定 */
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@@ -243,7 +254,7 @@ class Preview {
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},
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})
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this.names = new DocumentNames((version, names) => {
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if (this.ready && version === document.version)
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if (version === document.version)
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this.post({ type: 'displayNames', version, names })
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})
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this.lookups = new DocumentLookups(() => this.schedulePush())
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@@ -251,25 +262,15 @@ class Preview {
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this.diff = new PreviewDiff(
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() => this.from === undefined ? undefined : owner.diffBases.diffBase(document.uri, this.from),
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source => this.readOld(source),
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(diff) => {
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if (this.ready)
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this.post({ type: 'diff', diff })
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},
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diff => this.post({ type: 'diff', diff }),
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text => logger.add({ level: 'warn', source: 'codeReader', message: `${document.uri.fsPath}：${text}` }),
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)
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this.disposables = [
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owner.diffBases.onDidChange(() => {
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if (this.ready && this.sent)
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if (this.sent)
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void this.diff.update(this.sent)
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}),
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panel.webview.onDidReceiveMessage((msg: WebviewToExtension) => this.handleMessage(msg)),
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panel.onDidChangeViewState(() => {
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if (panel.visible)
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return
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// 页面被销毁了，高亮跟着没了
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this.ready = false
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owner.navigation.update(this, false)
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}),
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workspace.onDidChangeTextDocument((e) => {
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if (e.document !== document || e.contentChanges.length === 0)
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return
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@@ -391,7 +392,7 @@ class Preview {
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const { message, displayNames, symbols, imports } = await documentMessage({ languageId, version, getText: () => source, fileName: this.document.fileName, entryNames: this.owner.entries.namesOf(this.document.uri) }, this.registry, this.runtime, (text) => {
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logger.add({ level: 'warn', source: 'codeReader', message: `${this.document.uri.fsPath}：${text}` })
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}, session.lookup, callees.calleeKind)
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if (request !== this.latest || !this.ready)
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if (request !== this.latest)
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return
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this.definitions.remember(message.version, message.blocks)
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// 解析失败的文档没有块：问 AI 找不到块，也不拿它比差异
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@@ -490,7 +491,7 @@ class Preview {
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}
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}
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/** 跳到高亮着的名字的下一处 / 上一处出现；页面不在就算了（页面重新加载时高亮已经没了）。 */
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/** 跳到高亮着的名字的下一处 / 上一处出现；页面还没 ready 就算了（还没有高亮）。 */
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moveOccurrence(step: 1 | -1): void {
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if (this.ready)
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this.post({ type: 'moveOccurrence', step })
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@@ -512,7 +513,7 @@ class Preview {
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this.focusPathAsk()
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}
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/** 滚到 reveal：页面在就直接发，正在重新加载就等它发 ready 后随文档带过去。 */
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/** 滚到 reveal：页面 ready 了就直接发，还没 ready 就等它发 ready 后随文档带过去。 */
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private reveal(reveal: Reveal): void {
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if (this.ready)
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this.post({ type: 'reveal', ...reveal })
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@@ -556,11 +557,10 @@ class Preview {
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this.post({ type: 'focusPathAsk' })
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}
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/** kind 那种对话的 profile 列表每次现读（同看板），读完页面还在才发。 */
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/** kind 那种对话的 profile 列表每次现读（同看板）。 */
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private async postProfiles(kind: ChatKind): Promise<void> {
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const choice = await this.owner.qa.profiles[kind].choice()
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if (this.ready)
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this.post({ type: 'profiles', kind, ...choice })
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this.post({ type: 'profiles', kind, ...choice })
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}
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/**
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@@ -602,6 +602,7 @@ class Preview {
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private async handleMessage(msg: WebviewToExtension): Promise<void> {
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switch (msg.type) {
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case 'ready':
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// 页面刚装好（新开的、VS Code 重启后恢复的、真的重新加载了的）：眼下的状态和文档整份发一遍
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this.ready = true
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// 打开请求说了从哪儿打开的就按它；没说的按页面记着的（VS Code 重启后恢复的），页面也没记过的（新开的）不比
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this.from ??= msg.openedFrom ?? 'other'
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@@ -709,7 +710,7 @@ class Preview {
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if (version !== document.version)
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return
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const occurrences = await this.occurrences(offset)
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if (version === document.version && this.ready)
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if (version === document.version)
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this.post({ type: 'occurrencesFound', id, occurrences })
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}
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@@ -719,7 +720,7 @@ class Preview {
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if (version !== document.version)
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return
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const found = (await this.definitions.locate(version, offset)).length > 0
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if (version === document.version && this.ready)
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if (version === document.version)
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this.post({ type: 'definitionProbed', id, found })
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}
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@@ -774,7 +775,7 @@ class Preview {
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const [definition] = await findDefinitions(await this.definitions.locate(version, offset))
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const own = definition?.uri === document.uri.toString() && definition.offset === offset
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const peek = definition && !own ? await this.peekAt(definition.location.uri, definition.offset) : undefined
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if (version === document.version && this.ready)
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if (version === document.version)
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this.post({ type: 'definitionPeeked', id, ...(peek && { peek }) })
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}
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@@ -789,8 +790,7 @@ class Preview {
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const link = rel === undefined ? `[${symbol}]` : `${rel}#${symbol}`
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logger.add({ level: 'warn', source: 'codeReader', message: `没能找 ${link} 指的符号：${err instanceof Error ? err.message : String(err)}` })
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}
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if (this.ready)
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this.post({ type: 'definitionPeeked', id, ...(peek && { peek }) })
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this.post({ type: 'definitionPeeked', id, ...(peek && { peek }) })
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}
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/**
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@@ -869,8 +869,7 @@ class Preview {
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})),
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Promise.all(references.map(async reference => await this.resolveSymbolLink(reference, symbolsOf) ? undefined : reference)),
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])
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if (this.ready)
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this.post({ type: 'repoLinksChecked', id, missing: missing.filter(rel => rel !== undefined), unresolved: unresolved.filter(reference => reference !== undefined) })
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this.post({ type: 'repoLinksChecked', id, missing: missing.filter(rel => rel !== undefined), unresolved: unresolved.filter(reference => reference !== undefined) })
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}
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/** 仓库根放进这个预览能读的本地目录，图片地址才能加载。真实位置和 git 给的路径不一样时两个都放。 */
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@@ -908,8 +907,7 @@ class Preview {
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const src = this.panel.webview.asWebviewUri(Uri.file(entry.fsPath)).toString()
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return { path: rel, src }
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}))
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if (this.ready)
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this.post({ type: 'repoImagesChecked', id, images })
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this.post({ type: 'repoImagesChecked', id, images })
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}
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/**
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@@ -1010,13 +1008,11 @@ class Preview {
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}
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private markRepoLinkBroken(path: string | undefined, symbol?: string, block?: string): void {
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if (this.ready)
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this.post({ type: 'repoLinkBroken', ...(path !== undefined && { path }), ...(symbol !== undefined && { symbol }), ...(block !== undefined && { block }) })
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this.post({ type: 'repoLinkBroken', ...(path !== undefined && { path }), ...(symbol !== undefined && { symbol }), ...(block !== undefined && { block }) })
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}
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private markRepoLinkOpened(path: string | undefined, symbol?: string, block?: string): void {
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if (this.ready)
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this.post({ type: 'repoLinkOpened', ...(path !== undefined && { path }), ...(symbol !== undefined && { symbol }), ...(block !== undefined && { block }) })
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this.post({ type: 'repoLinkOpened', ...(path !== undefined && { path }), ...(symbol !== undefined && { symbol }), ...(block !== undefined && { block }) })
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}
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/**
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