Install and wire markstream-vue, markstream-react, markstream-vue2, markstream-angular, or markstream-svelte into an existing repository. Use when Codex needs to choose the right package, install the smallest framework-specific peer-dependency set, fix CSS/reset order, choose Vue 3 renderer mode and built-in, plain, or custom code-block paths, decide between `content`, `nodes`, and Vue 3 virtual-scroll coordination, or add a minimal working renderer example.
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name
markstream-install
description
Install and wire markstream-vue, markstream-react, markstream-vue2, markstream-angular, or markstream-svelte into an existing repository. Use when Codex needs to choose the right package, install the smallest framework-specific peer-dependency set, fix CSS/reset order, choose Vue 3 renderer mode and built-in, plain, or custom code-block paths, decide between `content`, `nodes`, and Vue 3 virtual-scroll coordination, or add a minimal working renderer example.
Markstream Install
Use this skill when the task is "add markstream to an app" or "fix a broken markstream install".
Check package.json, app entry files, Tailwind or UnoCSS config, and whether the repo is SSR or streaming-focused.
Choose the package that matches the host app: markstream-vue, markstream-vue2, markstream-react, markstream-angular, or markstream-svelte.
Use markstream-svelte only for Svelte 5 apps.
Install the smallest peer set that matches the requested features.
Add peers only for features the user actually needs. Check the chosen package's peerDependencies; peer availability differs by renderer.
Vue 3 fenced code uses the built-in renderer automatically. Add stream-diffs for the enhanced File/Diff surface, omit it for automatic <pre><code> fallback, or set render-code-blocks-as-pre to force the plain path.
Add @antv/infographic plus setInfographicLoader(...) only when infographic fences are needed.
Do not install every optional peer by default.
For Vue 3 enhanced code-block preloading, use preloadCodeBlockRuntime from markstream-vue. If the application intentionally owns a runtime controller, import that advanced API directly from stream-diffs.
Fix CSS order.
Put reset styles before Markstream styles.
In Tailwind or UnoCSS projects, use @import 'markstream-*/index.css' layer(components);.
Do not rely on renderer imports to inject CSS; import the package CSS subpath explicitly.
Import katex/dist/katex.min.css when math is enabled.
Add the smallest working render example.
Use content for static or low-frequency rendering.
In Vue 3 apps with long AI conversations, thread restore, or an existing message virtualizer such as vue-virtual-scroller, do not stop at a trivial renderer. Use MarkstreamVirtualTimeline or useMarkstreamVirtualAdapter() and follow docs/guide/performance.md.
For Vue 3, choose renderer mode by surface before tuning lower-level props.
mode="chat": AI chat or SSE output; lightweight batches, fade=false, max-live-nodes=0, and smooth-streaming="auto".
Regular fenced code uses the built-in renderer, enhanced by stream-diffs when installed. Use render-code-blocks-as-pre for a forced plain path or setCustomComponents(customId, { code_block: ... }) for a scoped application-owned renderer.
For streaming AI chat in other Markstream packages, start with content and built-in smooth streaming.
Auto mode is the default: smoothStreaming="auto" / smooth-streaming="auto".
Auto pacing activates when typewriter=true or maxLiveNodes <= 0 / max-live-nodes <= 0.
typewriter only controls the blinking cursor and defaults to false.
fade controls node enter and streamed-text fade animations and defaults to true.
For high-frequency smooth streams, consider fade=false / :fade="false" / [fade]="false" to avoid fade stacking.
Streaming vs recovering history: in chat UIs the same renderer starts streaming and later switches to history when final becomes true.
If the task requires overrides, prefer customId / custom-id plus scoped setCustomComponents(...).
Validate.
Run the smallest relevant build, typecheck, test, or docs build command.
Report which peers were installed, where CSS lives, and whether the repo should later adopt nodes.
Default Decisions
Prefer the minimal peer set over "install everything".
For Vue 3, omit mode only when the surface should use rich docs defaults.
Prefer content for most streaming chat now that built-in smooth streaming is available across Vue 3, Vue 2, React, Svelte, and Angular.
Move to nodes only when another layer owns parsing or AST transforms.
For Vue 3 apps that already virtualize messages, keep the outer virtualizer responsible for mounted rows; use Markstream virtual-scroll coordination so item height comes from metrics.totalHeight, not the renderer DOM height.
When using content for streaming, smooth streaming (smooth-streaming="auto") is on by default for typewriter or max-live-nodes <= 0. Set :smooth-streaming="false" to preserve raw chunk cadence.
Streaming vs recovering history: when a chat message transitions from streaming to history, keep the renderer mode stable and switch props dynamically — smooth-streaming="auto", fade=false for streaming; smooth-streaming=false, optional fade=true for history. See docs/guide/ai-chat-streaming.md for full examples.
Treat CSS order as a first-class part of installation, not a later cleanup.
When the request includes SSR, explicitly gate browser-only peers behind client-only boundaries.
Do not widen HTML or Mermaid security defaults unless the user explicitly needs trusted legacy compatibility.
Enhanced code blocks in every Markstream package use stream-diffs; there is no stream-monaco or Shiki direct integration in current versions.
Direct CodeBlockNode and top-level renderer configuration use the same codeBlockOptions / CodeBlockOptions contract. Keep component chrome in codeBlockProps; do not nest runtime options there.
In Vue 3, large code blocks can be highlighted off the main thread by injecting an upstream @pierre/diffsWorkerPoolManager through setStreamDiffsWorkerPool(...). The host builds the pool with its own bundler and adds @pierre/diffs as a direct dependency. This is a Vue 3-only enhancement; the other framework packages do not expose it.
If compatibility requires it, scope the opt-out to the trusted surface with / and instead of changing app-wide defaults blindly.
Useful Doc Targets
docs/guide/installation.md
docs/guide/usage.md
docs/guide/performance.md
docs/guide/troubleshooting.md
docs/guide/component-overrides.md
Vue 3 recovering/completed chat history: keep mode="chat" on the same chat row; use :smooth-streaming="false", typewriter=false, and only set :fade="true" when the host explicitly wants a history-entry animation.
Use mode="minimal" for lightweight non-chat recovered content, and use mode="docs" only for rich document surfaces.
Other packages streaming: smoothStreaming="auto" / smooth-streaming="auto", fade=false, typewriter=true.
Other packages recovering history: smoothStreaming=false / smooth-streaming=false, fade=true, typewriter=false.
Use nodes + final only for worker preparsing, shared AST stores, or custom AST control.
In Vue 3, use typewriter="simple" for a lightweight cursor on high-frequency streams; use precise mode only when the cursor must follow complex inline layout.
For a non-virtual Vue 3 chat scroller, import useStickToBottom from markstream-vue/utils; call scheduleScrollToBottom() after the content update instead of starting a smooth scrollIntoView() animation for every token. Use MarkstreamVirtualTimeline with stick-to-bottom="auto" for long mixed timelines.
For manual pacing with nodes, use useSmoothMarkdownStream: enqueue() chunks, finish() when done, render from visible, wait for caughtUp before final parsing.
Preserve the default hardening: HTML policies now default to safe, and Mermaid runs in strict mode by default.
