chore(memo): simplify markdown task list rendering
This commit is contained in:
@@ -1,36 +0,0 @@
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import type { Element } from "hast";
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import React from "react";
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import { isMentionElement, isTagElement, isTaskListItemElement } from "@/types/markdown";
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/**
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* Creates a conditional component that renders different components
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* based on AST node type detection
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*
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* @param CustomComponent - Custom component to render when condition matches
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* @param DefaultComponent - Default component/element to render otherwise
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* @param condition - Function to test AST node
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* @returns Conditional wrapper component
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*/
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export const createConditionalComponent = <P extends Record<string, unknown>>(
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CustomComponent: React.ComponentType<P>,
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DefaultComponent: React.ComponentType<P> | keyof JSX.IntrinsicElements,
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condition: (node: Element) => boolean,
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) => {
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return (props: P & { node?: Element }) => {
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const { node, ...restProps } = props;
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// Check AST node to determine which component to use
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if (node && condition(node)) {
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return <CustomComponent {...(restProps as P)} node={node} />;
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}
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// Render default component/element
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if (typeof DefaultComponent === "string") {
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return React.createElement(DefaultComponent, restProps);
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}
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return <DefaultComponent {...(restProps as P)} />;
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};
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};
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// Re-export type guards for convenience
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export { isMentionElement as isMentionNode, isTagElement as isTagNode, isTaskListItemElement as isTaskListItemNode };
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@@ -0,0 +1,139 @@
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import type { Element } from "hast";
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import type { Components } from "react-markdown";
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import ReactMarkdown from "react-markdown";
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import rehypeKatex from "rehype-katex";
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import rehypeRaw from "rehype-raw";
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import rehypeSanitize from "rehype-sanitize";
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import remarkBreaks from "remark-breaks";
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import remarkGfm from "remark-gfm";
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import remarkMath from "remark-math";
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import { isMentionElement, isTagElement, isTaskListItemElement } from "@/types/markdown";
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import { rehypeHeadingId } from "@/utils/rehype-plugins/rehype-heading-id";
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import { remarkDisableSetext } from "@/utils/remark-plugins/remark-disable-setext";
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import { remarkMention } from "@/utils/remark-plugins/remark-mention";
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import { remarkPreserveType } from "@/utils/remark-plugins/remark-preserve-type";
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import { remarkSplitMixedTaskLists } from "@/utils/remark-plugins/remark-split-mixed-task-lists";
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import { remarkTag } from "@/utils/remark-plugins/remark-tag";
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import { CodeBlock } from "./CodeBlock";
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import { SANITIZE_SCHEMA } from "./constants";
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import { Mention } from "./Mention";
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import { Blockquote, Heading, HorizontalRule, Image, InlineCode, Link, List, ListItem, Paragraph } from "./markdown";
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import { Table, TableBody, TableCell, TableHead, TableHeaderCell, TableRow } from "./Table";
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import { Tag } from "./Tag";
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import { TaskListItem } from "./TaskListItem";
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import { TrustedIframe } from "./TrustedIframe";
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interface MemoMarkdownRendererProps {
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content: string;
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resolvedMentionUsernames: Set<string>;
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}
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function getMentionUsername(node: Element, children?: React.ReactNode): string {
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const dataMention = node.properties?.["data-mention"];
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if (typeof dataMention === "string" && dataMention !== "") {
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return dataMention;
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}
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const camelDataMention = (node.properties as Record<string, unknown> | undefined)?.dataMention;
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if (typeof camelDataMention === "string" && camelDataMention !== "") {
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return camelDataMention;
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}
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const text = Array.isArray(children) ? children.join("") : children;
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if (typeof text === "string" && text.startsWith("@")) {
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return text.slice(1).toLowerCase();
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}
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return "";
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}
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export const MemoMarkdownRenderer = ({ content, resolvedMentionUsernames }: MemoMarkdownRendererProps) => {
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const markdownComponents: Components = {
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input: ({ node, ...inputProps }) => {
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if (node && isTaskListItemElement(node)) {
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return <TaskListItem {...inputProps} node={node} />;
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}
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return <input {...inputProps} />;
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},
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span: ({ node, ...spanProps }) => {
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if (node && isMentionElement(node)) {
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const username = getMentionUsername(node, spanProps.children);
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return <Mention {...spanProps} node={node} data-mention={username} resolved={resolvedMentionUsernames.has(username)} />;
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}
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if (node && isTagElement(node)) {
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return <Tag {...spanProps} node={node} />;
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}
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return <span {...spanProps} />;
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},
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h1: ({ children, ...props }) => (
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<Heading level={1} {...props}>
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{children}
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</Heading>
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),
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h2: ({ children, ...props }) => (
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<Heading level={2} {...props}>
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{children}
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</Heading>
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),
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h3: ({ children, ...props }) => (
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<Heading level={3} {...props}>
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{children}
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</Heading>
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),
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h4: ({ children, ...props }) => (
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<Heading level={4} {...props}>
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{children}
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</Heading>
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),
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h5: ({ children, ...props }) => (
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<Heading level={5} {...props}>
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{children}
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</Heading>
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),
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h6: ({ children, ...props }) => (
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<Heading level={6} {...props}>
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{children}
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</Heading>
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),
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p: ({ children, ...props }) => <Paragraph {...props}>{children}</Paragraph>,
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blockquote: ({ children, ...props }) => <Blockquote {...props}>{children}</Blockquote>,
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hr: (props) => <HorizontalRule {...props} />,
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ul: ({ children, ...props }) => <List {...props}>{children}</List>,
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ol: ({ children, ...props }) => (
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<List ordered {...props}>
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{children}
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</List>
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),
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li: ({ children, ...props }) => <ListItem {...props}>{children}</ListItem>,
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a: ({ children, ...props }) => <Link {...props}>{children}</Link>,
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code: ({ children, ...props }) => <InlineCode {...props}>{children}</InlineCode>,
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iframe: TrustedIframe,
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img: (props) => <Image {...props} />,
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pre: CodeBlock,
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table: ({ children, ...props }) => <Table {...props}>{children}</Table>,
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thead: ({ children, ...props }) => <TableHead {...props}>{children}</TableHead>,
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tbody: ({ children, ...props }) => <TableBody {...props}>{children}</TableBody>,
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tr: ({ children, ...props }) => <TableRow {...props}>{children}</TableRow>,
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th: ({ children, ...props }) => <TableHeaderCell {...props}>{children}</TableHeaderCell>,
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td: ({ children, ...props }) => <TableCell {...props}>{children}</TableCell>,
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};
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return (
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<ReactMarkdown
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remarkPlugins={[
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remarkDisableSetext,
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remarkMath,
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remarkGfm,
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remarkSplitMixedTaskLists,
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remarkBreaks,
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remarkMention,
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remarkTag,
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remarkPreserveType,
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]}
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rehypePlugins={[rehypeRaw, [rehypeSanitize, SANITIZE_SCHEMA], rehypeHeadingId, [rehypeKatex, { throwOnError: false, strict: false }]]}
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components={markdownComponents}
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>
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{content}
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</ReactMarkdown>
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);
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};
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@@ -1,53 +1,14 @@
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import type { Element } from "hast";
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import { ChevronDown, ChevronUp } from "lucide-react";
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import { memo, useMemo } from "react";
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import ReactMarkdown from "react-markdown";
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import rehypeKatex from "rehype-katex";
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import rehypeRaw from "rehype-raw";
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import rehypeSanitize from "rehype-sanitize";
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import remarkBreaks from "remark-breaks";
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import remarkGfm from "remark-gfm";
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import remarkMath from "remark-math";
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import { cn } from "@/lib/utils";
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import { useTranslate } from "@/utils/i18n";
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import { rehypeHeadingId } from "@/utils/rehype-plugins/rehype-heading-id";
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import { remarkDisableSetext } from "@/utils/remark-plugins/remark-disable-setext";
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import { extractMentionUsernames, remarkMention } from "@/utils/remark-plugins/remark-mention";
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import { remarkPreserveType } from "@/utils/remark-plugins/remark-preserve-type";
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import { remarkSplitMixedTaskLists } from "@/utils/remark-plugins/remark-split-mixed-task-lists";
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import { remarkTag } from "@/utils/remark-plugins/remark-tag";
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import { CodeBlock } from "./CodeBlock";
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import { isMentionNode, isTagNode, isTaskListItemNode } from "./ConditionalComponent";
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import { COMPACT_MODE_CONFIG, SANITIZE_SCHEMA } from "./constants";
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import { extractMentionUsernames } from "@/utils/remark-plugins/remark-mention";
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import { COMPACT_MODE_CONFIG } from "./constants";
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import { useCompactLabel, useCompactMode } from "./hooks";
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import { Mention } from "./Mention";
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import { MemoMarkdownRenderer } from "./MemoMarkdownRenderer";
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import { useResolvedMentionUsernames } from "./MentionResolutionContext";
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import { Blockquote, Heading, HorizontalRule, Image, InlineCode, Link, List, ListItem, Paragraph } from "./markdown";
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import { Table, TableBody, TableCell, TableHead, TableHeaderCell, TableRow } from "./Table";
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import { Tag } from "./Tag";
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import { TaskListItem } from "./TaskListItem";
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import { TrustedIframe } from "./TrustedIframe";
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import type { MemoContentProps } from "./types";
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function getMentionUsername(node: Element, children?: React.ReactNode): string {
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const dataMention = node.properties?.["data-mention"];
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if (typeof dataMention === "string" && dataMention !== "") {
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return dataMention;
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}
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const camelDataMention = (node.properties as Record<string, unknown> | undefined)?.dataMention;
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if (typeof camelDataMention === "string" && camelDataMention !== "") {
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return camelDataMention;
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}
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const text = Array.isArray(children) ? children.join("") : children;
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if (typeof text === "string" && text.startsWith("@")) {
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return text.slice(1).toLowerCase();
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}
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return "";
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}
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const MemoContent = (props: MemoContentProps) => {
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const { className, contentClassName, content, onClick, onDoubleClick } = props;
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const t = useTranslate();
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@@ -79,104 +40,7 @@ const MemoContent = (props: MemoContentProps) => {
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onMouseUp={onClick}
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onDoubleClick={onDoubleClick}
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>
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<ReactMarkdown
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remarkPlugins={[
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remarkDisableSetext,
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remarkMath,
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remarkGfm,
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remarkSplitMixedTaskLists,
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remarkBreaks,
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remarkMention,
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remarkTag,
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remarkPreserveType,
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]}
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rehypePlugins={[
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rehypeRaw,
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[rehypeSanitize, SANITIZE_SCHEMA],
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rehypeHeadingId,
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[rehypeKatex, { throwOnError: false, strict: false }],
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]}
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components={{
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// Child components consume from MemoViewContext directly
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input: ((inputProps: React.ComponentProps<"input"> & { node?: Element }) => {
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const { node, ...rest } = inputProps;
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if (node && isTaskListItemNode(node)) {
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return <TaskListItem {...inputProps} />;
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}
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return <input {...rest} />;
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}) as React.ComponentType<React.ComponentProps<"input">>,
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span: ((spanProps: React.ComponentProps<"span"> & { node?: Element }) => {
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const { node, ...rest } = spanProps;
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if (node && isMentionNode(node)) {
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const username = getMentionUsername(node, spanProps.children);
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return <Mention {...spanProps} data-mention={username} resolved={resolvedMentionUsernames.has(username)} />;
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}
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if (node && isTagNode(node)) {
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return <Tag {...spanProps} />;
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}
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return <span {...rest} />;
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}) as React.ComponentType<React.ComponentProps<"span">>,
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// Headings
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h1: ({ children, ...props }) => (
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<Heading level={1} {...props}>
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{children}
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</Heading>
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),
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h2: ({ children, ...props }) => (
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<Heading level={2} {...props}>
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{children}
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</Heading>
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),
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h3: ({ children, ...props }) => (
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<Heading level={3} {...props}>
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{children}
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</Heading>
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),
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h4: ({ children, ...props }) => (
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<Heading level={4} {...props}>
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{children}
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</Heading>
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),
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h5: ({ children, ...props }) => (
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<Heading level={5} {...props}>
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{children}
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</Heading>
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),
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h6: ({ children, ...props }) => (
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<Heading level={6} {...props}>
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{children}
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</Heading>
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),
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// Block elements
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p: ({ children, ...props }) => <Paragraph {...props}>{children}</Paragraph>,
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blockquote: ({ children, ...props }) => <Blockquote {...props}>{children}</Blockquote>,
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hr: (props) => <HorizontalRule {...props} />,
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// Lists
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ul: ({ children, ...props }) => <List {...props}>{children}</List>,
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ol: ({ children, ...props }) => (
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<List ordered {...props}>
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{children}
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</List>
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),
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li: ({ children, ...props }) => <ListItem {...props}>{children}</ListItem>,
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// Inline elements
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a: ({ children, ...props }) => <Link {...props}>{children}</Link>,
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code: ({ children, ...props }) => <InlineCode {...props}>{children}</InlineCode>,
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iframe: TrustedIframe as React.ComponentType<React.ComponentProps<"iframe">>,
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img: ({ ...props }) => <Image {...props} />,
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// Code blocks
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pre: CodeBlock,
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// Tables
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table: ({ children, ...props }) => <Table {...props}>{children}</Table>,
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thead: ({ children, ...props }) => <TableHead {...props}>{children}</TableHead>,
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tbody: ({ children, ...props }) => <TableBody {...props}>{children}</TableBody>,
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tr: ({ children, ...props }) => <TableRow {...props}>{children}</TableRow>,
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th: ({ children, ...props }) => <TableHeaderCell {...props}>{children}</TableHeaderCell>,
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td: ({ children, ...props }) => <TableCell {...props}>{children}</TableCell>,
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}}
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>
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{content}
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</ReactMarkdown>
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<MemoMarkdownRenderer content={content} resolvedMentionUsernames={resolvedMentionUsernames} />
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{showCompactMode === "ALL" && (
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<div
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className={cn(
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@@ -20,8 +20,8 @@ export const List = ({ ordered, children, className, node: _node, ...domProps }:
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className={cn(
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"my-0 mb-2 list-outside",
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isTaskList
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? // Task list: no bullets, nested lists get left margin for indentation
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"list-none [&_ul.contains-task-list]:ml-6"
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? // Task list indentation is handled by task item grid columns.
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"list-none"
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: // Regular list: standard padding and list style
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cn("pl-6", ordered ? "list-decimal" : "list-disc"),
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className,
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@@ -40,7 +40,6 @@ interface ListItemProps extends React.LiHTMLAttributes<HTMLLIElement>, ReactMark
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/**
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* List item component for both regular and task list items
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* Detects task items via the "task-list-item" class added by remark-gfm
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* Applies specialized styling for task checkboxes
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*/
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export const ListItem = ({ children, className, node: _node, ...domProps }: ListItemProps) => {
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const isTaskListItem = className?.includes(TASK_LIST_ITEM_CLASS);
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@@ -49,11 +48,9 @@ export const ListItem = ({ children, className, node: _node, ...domProps }: List
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return (
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<li
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className={cn(
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"mt-0.5 leading-6 list-none",
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// Checkbox styling: margin and alignment
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"[&>button]:mr-2 [&>button]:align-middle",
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// Inline paragraph for task text
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"[&>p]:inline [&>p]:m-0",
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"mt-0.5 leading-6 list-none grid grid-cols-[auto_1fr] items-center gap-x-2",
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"[&>ul]:col-start-2 [&>ul]:col-span-1 [&>ol]:col-start-2 [&>ol]:col-span-1",
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"[&>p:first-child]:contents [&>p:not(:first-child)]:col-start-2 [&>p:not(:first-child)]:col-span-1",
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className,
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)}
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{...domProps}
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@@ -1,97 +1,18 @@
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# Markdown Components
|
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|
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Modern, type-safe React components for rendering markdown content via react-markdown.
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Small React components used by `MemoMarkdownRenderer` to style HTML emitted by `react-markdown`.
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## Architecture
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## Responsibilities
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### Component-Based Rendering
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Following patterns from popular AI chat apps (ChatGPT, Claude, Perplexity), we use React components instead of CSS selectors for markdown rendering. This provides:
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- Keep element styling local to each semantic HTML element.
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- Strip the `node` prop from DOM output through `ReactMarkdownProps`.
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- Preserve existing markdown behavior while avoiding structural fixes in CSS.
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- **Type Safety**: Full TypeScript support with proper prop types
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- **Maintainability**: Components are easier to test, modify, and understand
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- **Performance**: No CSS specificity conflicts, cleaner DOM
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- **Modularity**: Each element is independently styled and documented
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## Task Lists
|
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### Type System
|
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GFM task lists are normalized before rendering by `remarkSplitMixedTaskLists`.
|
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|
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All components extend `ReactMarkdownProps` which includes the AST `node` prop passed by react-markdown. This is explicitly destructured as `node: _node` to:
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1. Filter it from DOM props (avoids `node="[object Object]"` in HTML)
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2. Keep it available for advanced use cases (e.g., detecting task lists)
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3. Maintain type safety without `as any` casts
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||||
|
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### GFM Task Lists
|
||||
|
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Task lists (from remark-gfm) are handled by:
|
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- **Detection**: `contains-task-list` and `task-list-item` classes from remark-gfm
|
||||
- **Styling**: Tailwind utilities with arbitrary variants for nested elements
|
||||
- **Checkboxes**: Custom `TaskListItem` component with Radix UI checkbox
|
||||
- **Interactivity**: Updates memo content via `toggleTaskAtIndex` utility
|
||||
|
||||
### Component Patterns
|
||||
|
||||
Each component follows this structure:
|
||||
```tsx
|
||||
import { cn } from "@/lib/utils";
|
||||
import type { ReactMarkdownProps } from "./types";
|
||||
|
||||
interface ComponentProps extends React.HTMLAttributes<HTMLElement>, ReactMarkdownProps {
|
||||
children?: React.ReactNode;
|
||||
// component-specific props
|
||||
}
|
||||
|
||||
/**
|
||||
* JSDoc description
|
||||
*/
|
||||
export const Component = ({ children, className, node: _node, ...props }: ComponentProps) => {
|
||||
return (
|
||||
<element className={cn("base-classes", className)} {...props}>
|
||||
{children}
|
||||
</element>
|
||||
);
|
||||
};
|
||||
```
|
||||
|
||||
## Components
|
||||
|
||||
| Component | Element | Purpose |
|
||||
|-----------|---------|---------|
|
||||
| `Heading` | h1-h6 | Semantic headings with level-based styling |
|
||||
| `Paragraph` | p | Compact paragraphs with consistent spacing |
|
||||
| `Link` | a | External links with security attributes |
|
||||
| `List` | ul/ol | Regular and GFM task lists |
|
||||
| `ListItem` | li | List items with task checkbox support |
|
||||
| `Blockquote` | blockquote | Quotes with left border accent |
|
||||
| `InlineCode` | code | Inline code with background |
|
||||
| `Image` | img | Responsive images with rounded corners |
|
||||
| `HorizontalRule` | hr | Section separators |
|
||||
|
||||
## Styling Approach
|
||||
|
||||
- **Tailwind CSS**: All styling uses Tailwind utilities
|
||||
- **Design Tokens**: Colors use CSS variables (e.g., `--primary`, `--muted-foreground`)
|
||||
- **Responsive**: Max-width constraints, responsive images
|
||||
- **Accessibility**: Semantic HTML, proper ARIA attributes via Radix UI
|
||||
|
||||
## Integration
|
||||
|
||||
Components are mapped to HTML elements in `MemoContent/index.tsx`:
|
||||
|
||||
```tsx
|
||||
<ReactMarkdown
|
||||
components={{
|
||||
h1: ({ children }) => <Heading level={1}>{children}</Heading>,
|
||||
p: ({ children, ...props }) => <Paragraph {...props}>{children}</Paragraph>,
|
||||
// ... more mappings
|
||||
}}
|
||||
>
|
||||
{content}
|
||||
</ReactMarkdown>
|
||||
```
|
||||
|
||||
## Future Enhancements
|
||||
|
||||
- [ ] Syntax highlighting themes for code blocks
|
||||
- [ ] Table sorting/filtering interactions
|
||||
- [ ] Image lightbox/zoom functionality
|
||||
- [ ] Collapsible sections for long content
|
||||
- [ ] Copy button for code blocks
|
||||
- Mixed task/bullet lists are split into separate lists so regular bullets keep bullets.
|
||||
- Single-block split items are rendered as tight list items, preventing accidental `<p>` wrappers.
|
||||
- `ListItem` uses a two-column grid: checkbox/control in the first column, task text and nested content in the second.
|
||||
- Loose task items keep paragraph structure; the first paragraph contributes its checkbox/text to the grid, while later paragraphs align with the text column.
|
||||
|
||||
@@ -1,11 +1,18 @@
|
||||
import type { List, ListItem, Root } from "mdast";
|
||||
import type { Parent } from "unist";
|
||||
|
||||
const isTaskListItem = (item: ListItem): boolean => typeof item.checked === "boolean";
|
||||
const isTaskItem = (item: ListItem): boolean => typeof item.checked === "boolean";
|
||||
|
||||
const isSingleBlockItem = (item: ListItem): boolean => item.children.length <= 1;
|
||||
|
||||
const hasLooseBlockItem = (item: ListItem): boolean => !isSingleBlockItem(item) && Boolean(item.spread);
|
||||
|
||||
const normalizeSplitListItems = (items: ListItem[]): ListItem[] =>
|
||||
items.map((item) => (isSingleBlockItem(item) ? { ...item, spread: false } : item));
|
||||
|
||||
const splitMixedList = (list: List): List[] => {
|
||||
const hasTaskItem = list.children.some(isTaskListItem);
|
||||
const hasRegularItem = list.children.some((item) => !isTaskListItem(item));
|
||||
const hasTaskItem = list.children.some(isTaskItem);
|
||||
const hasRegularItem = list.children.some((item) => !isTaskItem(item));
|
||||
|
||||
if (!hasTaskItem || !hasRegularItem) {
|
||||
return [list];
|
||||
@@ -13,7 +20,7 @@ const splitMixedList = (list: List): List[] => {
|
||||
|
||||
const groups: Array<{ isTaskGroup: boolean; items: ListItem[] }> = [];
|
||||
for (const item of list.children) {
|
||||
const isTaskGroup = isTaskListItem(item);
|
||||
const isTaskGroup = isTaskItem(item);
|
||||
const previousGroup = groups.at(-1);
|
||||
|
||||
if (previousGroup && previousGroup.isTaskGroup === isTaskGroup) {
|
||||
@@ -23,11 +30,14 @@ const splitMixedList = (list: List): List[] => {
|
||||
}
|
||||
}
|
||||
|
||||
return groups.map(({ isTaskGroup, items }) => ({
|
||||
...list,
|
||||
children: isTaskGroup ? items : items.map((item) => ({ ...item, spread: false })),
|
||||
spread: isTaskGroup ? list.spread : false,
|
||||
}));
|
||||
return groups.map(({ items }) => {
|
||||
const children = normalizeSplitListItems(items);
|
||||
return {
|
||||
...list,
|
||||
children,
|
||||
spread: children.some(hasLooseBlockItem),
|
||||
};
|
||||
});
|
||||
};
|
||||
|
||||
const splitMixedTaskListsInParent = (parent: Parent): void => {
|
||||
|
||||
@@ -34,6 +34,8 @@ describe("memo content lists", () => {
|
||||
expect(html).toContain('<li class="mt-0.5 leading-6">milk</li>');
|
||||
expect(html).not.toContain('<li class="mt-0.5 leading-6">\n<p>milk</p>');
|
||||
expect(html).toContain(TASK_LIST_ITEM_CLASS);
|
||||
expect(html).toContain("grid grid-cols-[auto_1fr] items-center gap-x-2");
|
||||
expect(html).not.toMatch(/<li class="[^"]*task-list-item[^"]*"><p\b/);
|
||||
});
|
||||
|
||||
it("keeps compact styling for pure task lists", () => {
|
||||
@@ -41,5 +43,25 @@ describe("memo content lists", () => {
|
||||
|
||||
expect(html).toMatch(/<ul class="[^"]*\blist-none\b[^"]*"/);
|
||||
expect(html).not.toMatch(/<ul class="[^"]*\blist-disc\b[^"]*"/);
|
||||
expect(html).not.toMatch(/<li class="[^"]*task-list-item[^"]*"><p\b/);
|
||||
});
|
||||
|
||||
it("keeps nested task lists on their own row", () => {
|
||||
const html = renderListContent("- [ ] asdas\n - [ ] zzzz");
|
||||
|
||||
expect(html).toContain("grid grid-cols-[auto_1fr] items-center gap-x-2");
|
||||
expect(html).toContain("[&>ul]:col-start-2");
|
||||
expect(html).not.toContain("[&_ul.contains-task-list]:ml-6");
|
||||
expect(html).toContain("zzzz");
|
||||
});
|
||||
|
||||
it("keeps loose task list paragraphs while aligning the first line", () => {
|
||||
const html = renderListContent("- [ ] plan\n\n keep details\n\n- [ ] zzzz");
|
||||
|
||||
expect(html).toMatch(/<li class="[^"]*task-list-item[^"]*">\s*<p>/);
|
||||
expect(html).toContain("[&>p:first-child]:contents");
|
||||
expect(html).toContain("[&>p:not(:first-child)]:col-start-2");
|
||||
expect(html).toContain("<p>keep details</p>");
|
||||
expect(html).toContain("zzzz");
|
||||
});
|
||||
});
|
||||
|
||||
Reference in New Issue
Block a user