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yaak-mountain-loop/src-web/components/Markdown.tsx
Gregory Schier b4a1c418bb Run oxfmt across repo, add format script and docs
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-13 10:15:49 -07:00

114 lines
3.0 KiB
TypeScript

import type { CSSProperties } from "react";
import ReactMarkdown, { type Components } from "react-markdown";
import { PrismLight as SyntaxHighlighter } from "react-syntax-highlighter";
import remarkGfm from "remark-gfm";
import { ErrorBoundary } from "./ErrorBoundary";
import { Prose } from "./Prose";
interface Props {
children: string | null;
className?: string;
}
export function Markdown({ children, className }: Props) {
if (children == null) return null;
return (
<Prose className={className}>
<ErrorBoundary name="Markdown">
<ReactMarkdown remarkPlugins={[remarkGfm]} components={markdownComponents}>
{children}
</ReactMarkdown>
</ErrorBoundary>
</Prose>
);
}
const prismTheme = {
'pre[class*="language-"]': {
// Needs to be here, so the lib doesn't add its own
},
// Syntax tokens
comment: { color: "var(--textSubtle)" },
prolog: { color: "var(--textSubtle)" },
doctype: { color: "var(--textSubtle)" },
cdata: { color: "var(--textSubtle)" },
punctuation: { color: "var(--textSubtle)" },
property: { color: "var(--primary)" },
"attr-name": { color: "var(--primary)" },
string: { color: "var(--notice)" },
char: { color: "var(--notice)" },
number: { color: "var(--info)" },
constant: { color: "var(--info)" },
symbol: { color: "var(--info)" },
boolean: { color: "var(--warning)" },
"attr-value": { color: "var(--warning)" },
variable: { color: "var(--success)" },
tag: { color: "var(--info)" },
operator: { color: "var(--danger)" },
keyword: { color: "var(--danger)" },
function: { color: "var(--success)" },
"class-name": { color: "var(--primary)" },
builtin: { color: "var(--danger)" },
selector: { color: "var(--danger)" },
inserted: { color: "var(--success)" },
deleted: { color: "var(--danger)" },
regex: { color: "var(--warning)" },
important: { color: "var(--danger)", fontWeight: "bold" },
italic: { fontStyle: "italic" },
bold: { fontWeight: "bold" },
entity: { cursor: "help" },
};
const lineStyle: CSSProperties = {
paddingRight: "1.5em",
paddingLeft: "0",
opacity: 0.5,
};
const markdownComponents: Partial<Components> = {
// Ensure links open in external browser by adding target="_blank"
a: ({ href, children, ...rest }) => {
if (href && !href.match(/https?:\/\//)) {
href = `http://${href}`;
}
return (
<a target="_blank" rel="noreferrer noopener" href={href} {...rest}>
{children}
</a>
);
},
code(props) {
const { children, className, ref, ...extraProps } = props;
extraProps.node = undefined;
const match = /language-(\w+)/.exec(className || "");
return match ? (
<SyntaxHighlighter
{...extraProps}
CodeTag="code"
showLineNumbers
PreTag="div"
lineNumberStyle={lineStyle}
language={match[1]}
style={prismTheme}
>
{String(children as string).replace(/\n$/, "")}
</SyntaxHighlighter>
) : (
<code {...extraProps} ref={ref} className={className}>
{children}
</code>
);
},
};