Sources

Installation

Complete project setup with react/base, then install these components:

pnpm exec frontfriend download trace collapsible message bubble button icon -f react --primitive base

Collect source-url parts after the answer and remove duplicate URLs. If a title is absent, show the hostname. Each link opens in a new tab and includes an accessible notice.

Usage

Complete example

import { Message, MessageContent } from "@/components/ui/message";
import { Bubble, BubbleContent } from "@/components/ui/bubble";
import {
  Trace,
  TraceCollapsible,
  TraceCollapsibleTrigger,
  TraceLine,
  TraceIcon,
  TraceTitle,
  TraceCollapsibleContent,
} from "@/components/ui/trace";
import { Icon } from "@/components/ui/icon";
import { Button } from "@/components/ui/button";
import * as React from "react";
type SourcePart = {
  type: "source-url";
  sourceId: string;
  url: string;
  title?: string;
};
const SOURCES: SourcePart[] = [
  {
    type: "source-url",
    sourceId: "source-0",
    url: "https://docs.astro.build/en/install-and-setup/",
    title: "Install Astro | docs.astro.build",
  },
  {
    type: "source-url",
    sourceId: "source-1",
    url: "https://www.npmjs.com/package/create-astro",
    title: "create-astro | npmjs.com",
  },
  {
    type: "source-url",
    sourceId: "source-2",
    url: "https://docs.astro.build/en/install-and-setup/",
    title: "Install Astro | docs.astro.build",
  },
  {
    type: "source-url",
    sourceId: "source-3",
    url: "https://pnpm.io/cli/create",
  },
];
const canvasStyle: React.CSSProperties = {
  width: "100%",
  maxWidth: 384,
  minWidth: 0,
  minHeight: 288,
  marginInline: "auto",
  display: "flex",
  flexDirection: "column",
  gap: 16,
  paddingBlock: 24,
  fontSize: "var(--text-sm)",
  lineHeight: 1.5,
};
const ANSWER =
  "Run pnpm create astro@latest and follow the prompts. It scaffolds the project and installs the dependencies.";
export default function AiSourcesExample() {
  const [count, setCount] = React.useState(SOURCES.length);
  const running = count < SOURCES.length;
  React.useEffect(() => {
    if (!running) return;
    const timer = setTimeout(() => setCount((value) => value + 1), 500);
    return () => clearTimeout(timer);
  }, [count, running]);
  const parts = SOURCES.slice(0, count);
  const sources = parts
    .filter((part) => part.type === "source-url")
    .filter(
      (part, index, all) =>
        all.findIndex((other) => other.url === part.url) === index,
    );
  return (
    <div style={canvasStyle}>
      <Message align="end">
        <MessageContent>
          <Bubble align="end" variant="muted">
            <BubbleContent>How do I start an Astro project with pnpm?</BubbleContent>
          </Bubble>
        </MessageContent>
      </Message>
      <Message>
        <MessageContent style={{ gap: 16 }}>
          <p>{ANSWER}</p>
          {sources.length > 0 && (
            <Trace>
              <TraceCollapsible defaultOpen>
                <TraceCollapsibleTrigger>
                  <TraceLine>
                    <TraceIcon>
                      <Icon name="Globe" />
                    </TraceIcon>
                    <TraceTitle>
                      Used {sources.length}{" "}
                      {sources.length === 1 ? "source" : "sources"}
                    </TraceTitle>
                  </TraceLine>
                </TraceCollapsibleTrigger>
                <TraceCollapsibleContent>
                  <Trace>
                    {sources.map((source) => (
                      <a
                        key={source.url}
                        href={source.url}
                        target="_blank"
                        rel="noreferrer"
                      >
                        <TraceLine>
                          <TraceTitle>
                            {source.title ?? new URL(source.url).hostname}
                            <span
                              style={{
                                position: "absolute",
                                width: 1,
                                height: 1,
                                overflow: "hidden",
                                clipPath: "inset(50%)",
                                whiteSpace: "nowrap",
                              }}
                            >
                              {" "}
                              (opens in a new tab)
                            </span>
                          </TraceTitle>
                          <TraceIcon>
                            <Icon name="ArrowUpRight" />
                          </TraceIcon>
                        </TraceLine>
                      </a>
                    ))}
                  </Trace>
                </TraceCollapsibleContent>
              </TraceCollapsible>
            </Trace>
          )}
        </MessageContent>
      </Message>
      <Button
        variant="outline"
        size="sm"
        style={{ marginTop: "auto", alignSelf: "flex-start" }}
        disabled={running}
        onClick={() => setCount(0)}
      >
        Replay
      </Button>
    </div>
  );
}

AI SDK

This optional adapter accepts a UIMessage from your chat client. The complete example needs no AI SDK or provider. Install this extra package only for the adapter:

pnpm add ai

Read source-url parts after the answer, remove duplicate URLs, and use the hostname when the title is absent. Links include the new-tab notice.

import type { UIMessage } from "ai";
import {
  Trace,
  TraceCollapsible,
  TraceCollapsibleTrigger,
  TraceLine,
  TraceIcon,
  TraceTitle,
  TraceCollapsibleContent,
} from "@/components/ui/trace";
import { Icon } from "@/components/ui/icon";
function SourcesAdapter({ message }: { message: UIMessage }) {
  const sources = message.parts
    .filter((part) => part.type === "source-url")
    .filter(
      (part, index, all) =>
        all.findIndex((other) => other.url === part.url) === index,
    );
  return sources.length > 0 ? (
    <Trace>
      <TraceCollapsible defaultOpen>
        <TraceCollapsibleTrigger>
          <TraceLine>
            <TraceIcon>
              <Icon name="Globe" />
            </TraceIcon>
            <TraceTitle>
              Used {sources.length}{" "}
              {sources.length === 1 ? "source" : "sources"}
            </TraceTitle>
          </TraceLine>
        </TraceCollapsibleTrigger>
        <TraceCollapsibleContent>
          <Trace>
            {sources.map((source) => (
              <a
                key={source.url}
                href={source.url}
                target="_blank"
                rel="noreferrer"
              >
                <TraceLine>
                  <TraceTitle>
                    {source.title ?? new URL(source.url).hostname}
                    <span
                      style={{
                        position: "absolute",
                        width: 1,
                        height: 1,
                        overflow: "hidden",
                        clipPath: "inset(50%)",
                        whiteSpace: "nowrap",
                      }}
                    >
                      {" "}
                      (opens in a new tab)
                    </span>
                  </TraceTitle>
                  <TraceIcon>
                    <Icon name="ArrowUpRight" />
                  </TraceIcon>
                </TraceLine>
              </a>
            ))}
          </Trace>
        </TraceCollapsibleContent>
      </TraceCollapsible>
    </Trace>
  ) : null;
}
const ANSWER =
  "Run pnpm create astro@latest and follow the prompts. It scaffolds the project and installs the dependencies.";
type SourcePart = {
  type: "source-url";
  sourceId: string;
  url: string;
  title?: string;
};
const SOURCES: SourcePart[] = [
  {
    type: "source-url",
    sourceId: "source-0",
    url: "https://docs.astro.build/en/install-and-setup/",
    title: "Install Astro | docs.astro.build",
  },
  {
    type: "source-url",
    sourceId: "source-1",
    url: "https://www.npmjs.com/package/create-astro",
    title: "create-astro | npmjs.com",
  },
  {
    type: "source-url",
    sourceId: "source-2",
    url: "https://docs.astro.build/en/install-and-setup/",
    title: "Install Astro | docs.astro.build",
  },
  {
    type: "source-url",
    sourceId: "source-3",
    url: "https://pnpm.io/cli/create",
  },
];
export default function AiSourcesExample() {
  return (
    <div
      style={{
        width: "100%",
        maxWidth: 384,
        marginInline: "auto",
        paddingBlock: 24,
      }}
    >
      <SourcesAdapter
        message={{
          id: "answer",
          role: "assistant",
          parts: [{ type: "text", text: ANSWER }, ...SOURCES],
        }}
      />
    </div>
  );
}

Components and API

This composition has no separate component API. Use the APIs for its installed components.