Pick any line to see why it is the way it is: the commit, the pull request and issue it came from, and what the agent was thinking.
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 1 | import { |
| 2 | AlertTriangle, | |
| 3 | Check, | |
| 4 | Copy, | |
| 5 | Info, | |
| 6 | Lightbulb, | |
| 7 | Link2, | |
| 8 | MessageSquareWarning, | |
| 9 | OctagonAlert, | |
| 10 | } from "lucide-react"; | |
| Merge the site's CPU: code highlighted once per data centre by content, markdown parsed once per text, and the request handler built once per isolate | 11 | import type { Root } from "hast"; |
| 12 | import type { Components } from "react-markdown"; | |
| Pages no longer blink as they refresh: a README stays put through a push, coloured diffs keep their colours, and production's picture is replaced rather than blanked. Markdown made its components for each commit (a README's pictures point at the commit shown), so every push to the branch had React take the whole README down and put it back; the components are now made once and read where links and pictures point from context, so a new commit only updates those addresses. A file in a diff (a commit, a pull request's changes, a comparison) dropped its colours on every refresh, since a refresh hands over a new file with the same lines, and drew them again when it scrolled near; it keeps them while its lines are the same. The production picture on a project's overview went back to its empty frame and "Taking a screenshot…" whenever its address changed (a new deploy) until the new one loaded; the old picture now stays under the new one until it has faded in. In Chat, every one of @g1t's answers was drawn afresh whenever a message arrived, since the repository they link into was compared as an object; it is compared by name. Router updates already run in a transition (React Router's RouterProvider wraps them in startTransition), so a refresh never shows a skeleton again once a page has loaded; that is measured below rather than changed. Checked: the site's typecheck, its 904 tests and a production build, and a harness that mounts the real routes with g1t.sh's own responses for flagon-io/g1t, decoded by React Router as the site does, watching the DOM over revalidations. Elements removed per 5 refreshes with the same data, before → after: commit page 2,495 → 0, every other page measured (overview, Code, a folder, a file, Commits, pull requests, issues, a pull request, an issue, Work, Workflows, a run, Deployments, and the same with the signed-in app shell) 0 → 0, with no skeleton shown again and no layout shift, also with deferred data taking 2.5 s. A push (a new head commit), per 4 refreshes: Code 1,077 → 0 (the README), overview's picture 18 removed and a skeleton shown → a 2-element cross-fade and none. | 13 | import { type ReactNode, createContext, isValidElement, useContext, useEffect, useMemo, useRef, useState } from "react"; |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 14 | import { Link } from "react-router"; |
| 15 | import rehypeRaw from "rehype-raw"; | |
| 16 | import rehypeSanitize, { defaultSchema } from "rehype-sanitize"; | |
| 17 | import remarkGfm from "remark-gfm"; | |
| 18 | ||
| The site is built from its shared components: one Button with its variants and sizes, one Badge, Card for every panel, Alert for notices, Kbd for keys, Table for the security tables, and Avatar, Command, Progress, ScrollArea, ToggleGroup, Collapsible and Accordion in the kit; raw buttons, hand-drawn cards and pills and per-file button class lists are gone, outline buttons stand the same height as filled ones, and the phone's Ask g1t loses its tile. Every page was compared pixel by pixel before and after. | 19 | import { Button } from "./ui/button"; |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 20 | import { Checkbox } from "./ui/checkbox"; |
| Merge the site's CPU: code highlighted once per data centre by content, markdown parsed once per text, and the request handler built once per isolate | 21 | import { WeightedLru } from "../lib/content-cache"; |
| Merge commit authors and hovercards: commits show their accounts, every name opens a card (repos 0016) | 22 | import { type AlertKind, G1T_MENTION_HREF, type MarkdownRepo, rehypeAlerts, rehypeReferences } from "../lib/markdown-plugins"; |
| Merge the site's CPU: code highlighted once per data centre by content, markdown parsed once per text, and the request handler built once per isolate | 23 | import { markdownTree, markdownWeight, renderMarkdownTree } from "../lib/markdown-tree"; |
| Merge g1tusercontent.com: registry answers run nothing in a browser, the site's pages run only their own scripts, repository files and avatars on their own origin, raw files rate limited per address | 24 | import { imageSource } from "../lib/usercontent"; |
| Merge commit authors and hovercards: commits show their accounts, every name opens a card (repos 0016) | 25 | import { UserCard } from "./user-card"; |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 26 | |
| 27 | /** The text inside a React tree, for anchors and copying. */ | |
| 28 | function textOf(node: ReactNode): string { | |
| 29 | if (node == null || typeof node === "boolean") return ""; | |
| 30 | if (typeof node === "string" || typeof node === "number") return String(node); | |
| 31 | if (Array.isArray(node)) return node.map(textOf).join(""); | |
| 32 | if (isValidElement<{ children?: ReactNode }>(node)) return textOf(node.props.children); | |
| 33 | return ""; | |
| 34 | } | |
| 35 | ||
| 36 | /** An anchor id for a heading, so sections can be linked to. */ | |
| 37 | function slug(children: ReactNode): string { | |
| 38 | return textOf(children) | |
| 39 | .toLowerCase() | |
| 40 | .replace(/[^a-z0-9]+/g, "-") | |
| 41 | .replace(/^-|-$/g, ""); | |
| 42 | } | |
| 43 | ||
| 44 | /** What raw HTML may stay: GitHub's own allow-list, as `rehype-sanitize` ships it. */ | |
| 45 | const SCHEMA = { | |
| 46 | ...defaultSchema, | |
| 47 | attributes: { | |
| 48 | ...defaultSchema.attributes, | |
| 49 | // Fenced blocks say their language in a class. | |
| 50 | code: [...(defaultSchema.attributes?.code ?? []), ["className", /^language-./]], | |
| 51 | }, | |
| 52 | }; | |
| 53 | ||
| Merge the site's CPU: code highlighted once per data centre by content, markdown parsed once per text, and the request handler built once per isolate | 54 | /** |
| 55 | * Parsed markdown, by repository and text: parsing and the plugins are | |
| 56 | * nine tenths of rendering a README, and a page's markdown is rendered | |
| 57 | * again on every view (and on every revalidation in the browser). The tree | |
| 58 | * depends only on the text and the repository its references point into | |
| 59 | * (lib/markdown-tree.ts). A tree takes about 20 bytes a character of its | |
| 60 | * text, so 400,000 characters of markdown, about 8 MB, per | |
| 61 | * isolate or tab. | |
| 62 | */ | |
| 63 | const trees = new WeightedLru<{ tree: Root; weight: number }>(400_000, (entry) => entry.weight); | |
| 64 | ||
| 65 | function treeOf(source: string, repo: MarkdownRepo | undefined): Root { | |
| 66 | const key = `${repo ? `${repo.namespace}/${repo.name}` : ""}\n${source}`; | |
| 67 | const kept = trees.get(key); | |
| 68 | if (kept) return kept.tree; | |
| 69 | const tree = markdownTree(source, { | |
| 70 | remarkPlugins: [remarkGfm], | |
| 71 | rehypePlugins: [rehypeRaw, [rehypeSanitize, SCHEMA], rehypeAlerts, [rehypeReferences, { repo }]], | |
| 72 | }); | |
| 73 | trees.set(key, { tree, weight: markdownWeight(source) }); | |
| 74 | return tree; | |
| 75 | } | |
| 76 | ||
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 77 | const ALERT: Record<AlertKind, { title: string; icon: ReactNode; tone: string }> = { |
| 78 | note: { title: "Note", icon: <Info size={15} />, tone: "border-info/60 [&_.alert-title]:text-info" }, | |
| Merge branch 'worktree-agent-ad7c6d88d93adc817' | 79 | tip: { title: "Tip", icon: <Lightbulb size={15} />, tone: "border-success/60 [&_.alert-title]:text-accent" }, |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 80 | important: { |
| 81 | title: "Important", | |
| 82 | icon: <MessageSquareWarning size={15} />, | |
| 83 | tone: "border-merged/60 [&_.alert-title]:text-merged", | |
| 84 | }, | |
| 85 | warning: { title: "Warning", icon: <AlertTriangle size={15} />, tone: "border-warn/60 [&_.alert-title]:text-warn" }, | |
| 86 | caution: { title: "Caution", icon: <OctagonAlert size={15} />, tone: "border-danger/60 [&_.alert-title]:text-danger" }, | |
| 87 | }; | |
| 88 | ||
| 89 | function Heading({ level, children }: { level: 1 | 2 | 3 | 4; children: ReactNode }) { | |
| 90 | const id = slug(children); | |
| 91 | const Tag = `h${level}` as const; | |
| 92 | return ( | |
| 93 | <Tag id={id} className="group relative scroll-mt-20"> | |
| 94 | {children} | |
| 95 | {id && ( | |
| 96 | <a | |
| 97 | href={`#${id}`} | |
| 98 | aria-label="Link to this section" | |
| 99 | className="ml-2 inline-flex align-middle text-faint no-underline opacity-0 transition-opacity group-hover:opacity-100 hover:text-fg" | |
| 100 | > | |
| 101 | <Link2 size={14} /> | |
| 102 | </a> | |
| 103 | )} | |
| 104 | </Tag> | |
| 105 | ); | |
| 106 | } | |
| 107 | ||
| 108 | /** | |
| 109 | * A fenced code block: plain at once, coloured in the browser when its | |
| 110 | * language is known, with a button to copy it. | |
| 111 | */ | |
| 112 | function CodeBlock({ language, code }: { language: string | null; code: string }) { | |
| 113 | const [html, setHtml] = useState<string[] | null>(null); | |
| 114 | const [copied, setCopied] = useState(false); | |
| 115 | const block = useRef<HTMLPreElement>(null); | |
| 116 | useEffect(() => { | |
| 117 | if (!language) return; | |
| 118 | let cancelled = false; | |
| 119 | const element = block.current; | |
| 120 | if (!element) return; | |
| 121 | const observer = new IntersectionObserver( | |
| 122 | ([entry]) => { | |
| 123 | if (!entry?.isIntersecting) return; | |
| 124 | observer.disconnect(); | |
| 125 | void import("../lib/shiki") | |
| 126 | .then(async ({ getHighlighter, languageNamed, linesToHtml }) => { | |
| 127 | const lang = languageNamed(language); | |
| 128 | if (!lang) return null; | |
| 129 | return linesToHtml(await getHighlighter(), code, lang); | |
| 130 | }) | |
| 131 | .then((lines) => { | |
| 132 | if (!cancelled && lines) setHtml(lines); | |
| 133 | }) | |
| 134 | .catch(() => {}); | |
| 135 | }, | |
| 136 | { rootMargin: "400px 0px" }, | |
| 137 | ); | |
| 138 | observer.observe(element); | |
| 139 | return () => { | |
| 140 | cancelled = true; | |
| 141 | observer.disconnect(); | |
| 142 | }; | |
| 143 | }, [language, code]); | |
| 144 | return ( | |
| 145 | <div className="group relative"> | |
| 146 | <pre ref={block}> | |
| 147 | <code> | |
| 148 | {html | |
| 149 | ? html.map((line, index) => ( | |
| 150 | <span key={index} className="block" dangerouslySetInnerHTML={{ __html: line || " " }} /> | |
| 151 | )) | |
| 152 | : code} | |
| 153 | </code> | |
| 154 | </pre> | |
| Phones reach every page: each mode's menu from the top bar or by tapping the tab you're on, Docs first in the avatar sheet, a project's pages as a swipeable strip; dialogs as bottom sheets above the keyboard, safe areas, menus kept on screen, 40px targets, touch-visible controls, save bars above the tab bar | 155 | <div className="absolute top-2 right-2 flex items-center gap-2 opacity-0 transition-opacity group-hover:opacity-100 focus-within:opacity-100 pointer-coarse:opacity-100"> |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 156 | {language && <span className="font-mono text-[0.6875rem] text-faint">{language}</span>} |
| The site is built from its shared components: one Button with its variants and sizes, one Badge, Card for every panel, Alert for notices, Kbd for keys, Table for the security tables, and Avatar, Command, Progress, ScrollArea, ToggleGroup, Collapsible and Accordion in the kit; raw buttons, hand-drawn cards and pills and per-file button class lists are gone, outline buttons stand the same height as filled ones, and the phone's Ask g1t loses its tile. Every page was compared pixel by pixel before and after. | 157 | <Button |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 158 | type="button" |
| 159 | aria-label="Copy" | |
| 160 | onClick={() => { | |
| 161 | void navigator.clipboard?.writeText(code).then(() => { | |
| 162 | setCopied(true); | |
| 163 | setTimeout(() => setCopied(false), 1500); | |
| 164 | }); | |
| 165 | }} | |
| The site is built from its shared components: one Button with its variants and sizes, one Badge, Card for every panel, Alert for notices, Kbd for keys, Table for the security tables, and Avatar, Command, Progress, ScrollArea, ToggleGroup, Collapsible and Accordion in the kit; raw buttons, hand-drawn cards and pills and per-file button class lists are gone, outline buttons stand the same height as filled ones, and the phone's Ask g1t loses its tile. Every page was compared pixel by pixel before and after. | 166 | variant="outline" |
| 167 | size="inline" | |
| 168 | className="bg-raised p-1.5 text-muted" | |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 169 | > |
| Merge branch 'worktree-agent-ad7c6d88d93adc817' | 170 | {copied ? <Check size={13} className="text-success" /> : <Copy size={13} />} |
| The site is built from its shared components: one Button with its variants and sizes, one Badge, Card for every panel, Alert for notices, Kbd for keys, Table for the security tables, and Avatar, Command, Progress, ScrollArea, ToggleGroup, Collapsible and Accordion in the kit; raw buttons, hand-drawn cards and pills and per-file button class lists are gone, outline buttons stand the same height as filled ones, and the phone's Ask g1t loses its tile. Every page was compared pixel by pixel before and after. | 171 | </Button> |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 172 | </div> |
| 173 | </div> | |
| 174 | ); | |
| 175 | } | |
| 176 | ||
| 177 | function isExternal(href: string) { | |
| 178 | return /^[a-z][a-z0-9+.-]*:/i.test(href) || href.startsWith("//"); | |
| 179 | } | |
| 180 | ||
| 181 | /** | |
| 182 | * Renders markdown the way people expect from a forge: GitHub flavoured | |
| 183 | * markdown (tables, task lists, footnotes, strikethrough, autolinks), the | |
| 184 | * HTML GitHub allows, alerts, highlighted code, heading anchors, and | |
| 185 | * references (`#12`, `owner/repo#12`, `@name`, commit hashes) linked | |
| 186 | * within `repo`. Anything an author writes is sanitized, so untrusted | |
| 187 | * content is safe to pass in. | |
| 188 | */ | |
| 189 | export function Markdown({ | |
| 190 | source, | |
| 191 | repo, | |
| 192 | base, | |
| Merge g1tusercontent.com: registry answers run nothing in a browser, the site's pages run only their own scripts, repository files and avatars on their own origin, raw files rate limited per address | 193 | rawBase, |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 194 | }: { |
| 195 | source: string; | |
| 196 | /** The repository the text belongs to, for its references. */ | |
| 197 | repo?: MarkdownRepo; | |
| 198 | /** Where relative links point, e.g. `/acme/web/blob/main/docs` for a file's own folder. */ | |
| 199 | base?: string; | |
| Merge g1tusercontent.com: registry answers run nothing in a browser, the site's pages run only their own scripts, repository files and avatars on their own origin, raw files rate limited per address | 200 | /** |
| 201 | * Where relative images point: the same folder's raw files, e.g. | |
| 202 | * `/acme/web/raw/<commit>/docs`, under `/acme/web/raw/<commit>`. An image | |
| 203 | * path starting with `/` is from the repository's root. | |
| 204 | */ | |
| 205 | rawBase?: string; | |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 206 | }) { |
| A README no longer blinks while you read it: the Code page follows pushes and checks and revalidates as they arrive, and each time Markdown handed react-markdown a new set of components (a new function for every heading, link, picture and table), so React took the whole README down and put it back, reloading its pictures. Markdown now keeps the parsed text, the components (made once per link and picture base) and the rendered elements while those stay the same, so a refresh leaves the text untouched. The same holds wherever Markdown is drawn: issues, pull requests, comments and docs. Checked: the site's typecheck, its 901 tests and a production build. | 207 | // The same text renders to the same elements with the same components, so |
| 208 | // a page that revalidates (a live refresh) leaves the text as it is | |
| Pages no longer blink as they refresh: a README stays put through a push, coloured diffs keep their colours, and production's picture is replaced rather than blanked. Markdown made its components for each commit (a README's pictures point at the commit shown), so every push to the branch had React take the whole README down and put it back; the components are now made once and read where links and pictures point from context, so a new commit only updates those addresses. A file in a diff (a commit, a pull request's changes, a comparison) dropped its colours on every refresh, since a refresh hands over a new file with the same lines, and drew them again when it scrolled near; it keeps them while its lines are the same. The production picture on a project's overview went back to its empty frame and "Taking a screenshot…" whenever its address changed (a new deploy) until the new one loaded; the old picture now stays under the new one until it has faded in. In Chat, every one of @g1t's answers was drawn afresh whenever a message arrived, since the repository they link into was compared as an object; it is compared by name. Router updates already run in a transition (React Router's RouterProvider wraps them in startTransition), so a refresh never shows a skeleton again once a page has loaded; that is measured below rather than changed. Checked: the site's typecheck, its 904 tests and a production build, and a harness that mounts the real routes with g1t.sh's own responses for flagon-io/g1t, decoded by React Router as the site does, watching the DOM over revalidations. Elements removed per 5 refreshes with the same data, before → after: commit page 2,495 → 0, every other page measured (overview, Code, a folder, a file, Commits, pull requests, issues, a pull request, an issue, Work, Workflows, a run, Deployments, and the same with the signed-in app shell) 0 → 0, with no skeleton shown again and no layout shift, also with deferred data taking 2.5 s. A push (a new head commit), per 4 refreshes: Code 1,077 → 0 (the README), overview's picture 18 removed and a skeleton shown → a 2-element cross-fade and none. | 209 | // rather than mounting it again and reloading its pictures. The |
| 210 | // components never change: where links and pictures point comes from | |
| 211 | // context, so a new commit (a README's pictures are that commit's files) | |
| 212 | // updates their addresses in place rather than replacing every element. | |
| A README no longer blinks while you read it: the Code page follows pushes and checks and revalidates as they arrive, and each time Markdown handed react-markdown a new set of components (a new function for every heading, link, picture and table), so React took the whole README down and put it back, reloading its pictures. Markdown now keeps the parsed text, the components (made once per link and picture base) and the rendered elements while those stay the same, so a refresh leaves the text untouched. The same holds wherever Markdown is drawn: issues, pull requests, comments and docs. Checked: the site's typecheck, its 901 tests and a production build. | 213 | const tree = useMemo(() => treeOf(source, repo), [source, repo?.namespace, repo?.name]); |
| Pages no longer blink as they refresh: a README stays put through a push, coloured diffs keep their colours, and production's picture is replaced rather than blanked. Markdown made its components for each commit (a README's pictures point at the commit shown), so every push to the branch had React take the whole README down and put it back; the components are now made once and read where links and pictures point from context, so a new commit only updates those addresses. A file in a diff (a commit, a pull request's changes, a comparison) dropped its colours on every refresh, since a refresh hands over a new file with the same lines, and drew them again when it scrolled near; it keeps them while its lines are the same. The production picture on a project's overview went back to its empty frame and "Taking a screenshot…" whenever its address changed (a new deploy) until the new one loaded; the old picture now stays under the new one until it has faded in. In Chat, every one of @g1t's answers was drawn afresh whenever a message arrived, since the repository they link into was compared as an object; it is compared by name. Router updates already run in a transition (React Router's RouterProvider wraps them in startTransition), so a refresh never shows a skeleton again once a page has loaded; that is measured below rather than changed. Checked: the site's typecheck, its 904 tests and a production build, and a harness that mounts the real routes with g1t.sh's own responses for flagon-io/g1t, decoded by React Router as the site does, watching the DOM over revalidations. Elements removed per 5 refreshes with the same data, before → after: commit page 2,495 → 0, every other page measured (overview, Code, a folder, a file, Commits, pull requests, issues, a pull request, an issue, Work, Workflows, a run, Deployments, and the same with the signed-in app shell) 0 → 0, with no skeleton shown again and no layout shift, also with deferred data taking 2.5 s. A push (a new head commit), per 4 refreshes: Code 1,077 → 0 (the README), overview's picture 18 removed and a skeleton shown → a 2-element cross-fade and none. | 214 | const rendered = useMemo(() => renderMarkdownTree(tree, COMPONENTS), [tree]); |
| 215 | const bases = useMemo(() => ({ base, rawBase }), [base, rawBase]); | |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 216 | return ( |
| Pages no longer blink as they refresh: a README stays put through a push, coloured diffs keep their colours, and production's picture is replaced rather than blanked. Markdown made its components for each commit (a README's pictures point at the commit shown), so every push to the branch had React take the whole README down and put it back; the components are now made once and read where links and pictures point from context, so a new commit only updates those addresses. A file in a diff (a commit, a pull request's changes, a comparison) dropped its colours on every refresh, since a refresh hands over a new file with the same lines, and drew them again when it scrolled near; it keeps them while its lines are the same. The production picture on a project's overview went back to its empty frame and "Taking a screenshot…" whenever its address changed (a new deploy) until the new one loaded; the old picture now stays under the new one until it has faded in. In Chat, every one of @g1t's answers was drawn afresh whenever a message arrived, since the repository they link into was compared as an object; it is compared by name. Router updates already run in a transition (React Router's RouterProvider wraps them in startTransition), so a refresh never shows a skeleton again once a page has loaded; that is measured below rather than changed. Checked: the site's typecheck, its 904 tests and a production build, and a harness that mounts the real routes with g1t.sh's own responses for flagon-io/g1t, decoded by React Router as the site does, watching the DOM over revalidations. Elements removed per 5 refreshes with the same data, before → after: commit page 2,495 → 0, every other page measured (overview, Code, a folder, a file, Commits, pull requests, issues, a pull request, an issue, Work, Workflows, a run, Deployments, and the same with the signed-in app shell) 0 → 0, with no skeleton shown again and no layout shift, also with deferred data taking 2.5 s. A push (a new head commit), per 4 refreshes: Code 1,077 → 0 (the README), overview's picture 18 removed and a skeleton shown → a 2-element cross-fade and none. | 217 | <MarkdownBases.Provider value={bases}> |
| 218 | {/* A long word or address breaks rather than widening the page. */} | |
| 219 | <div className="prose wrap-break-word">{rendered}</div> | |
| 220 | </MarkdownBases.Provider> | |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 221 | ); |
| 222 | } | |
| A README no longer blinks while you read it: the Code page follows pushes and checks and revalidates as they arrive, and each time Markdown handed react-markdown a new set of components (a new function for every heading, link, picture and table), so React took the whole README down and put it back, reloading its pictures. Markdown now keeps the parsed text, the components (made once per link and picture base) and the rendered elements while those stay the same, so a refresh leaves the text untouched. The same holds wherever Markdown is drawn: issues, pull requests, comments and docs. Checked: the site's typecheck, its 901 tests and a production build. | 223 | |
| Pages no longer blink as they refresh: a README stays put through a push, coloured diffs keep their colours, and production's picture is replaced rather than blanked. Markdown made its components for each commit (a README's pictures point at the commit shown), so every push to the branch had React take the whole README down and put it back; the components are now made once and read where links and pictures point from context, so a new commit only updates those addresses. A file in a diff (a commit, a pull request's changes, a comparison) dropped its colours on every refresh, since a refresh hands over a new file with the same lines, and drew them again when it scrolled near; it keeps them while its lines are the same. The production picture on a project's overview went back to its empty frame and "Taking a screenshot…" whenever its address changed (a new deploy) until the new one loaded; the old picture now stays under the new one until it has faded in. In Chat, every one of @g1t's answers was drawn afresh whenever a message arrived, since the repository they link into was compared as an object; it is compared by name. Router updates already run in a transition (React Router's RouterProvider wraps them in startTransition), so a refresh never shows a skeleton again once a page has loaded; that is measured below rather than changed. Checked: the site's typecheck, its 904 tests and a production build, and a harness that mounts the real routes with g1t.sh's own responses for flagon-io/g1t, decoded by React Router as the site does, watching the DOM over revalidations. Elements removed per 5 refreshes with the same data, before → after: commit page 2,495 → 0, every other page measured (overview, Code, a folder, a file, Commits, pull requests, issues, a pull request, an issue, Work, Workflows, a run, Deployments, and the same with the signed-in app shell) 0 → 0, with no skeleton shown again and no layout shift, also with deferred data taking 2.5 s. A push (a new head commit), per 4 refreshes: Code 1,077 → 0 (the README), overview's picture 18 removed and a skeleton shown → a 2-element cross-fade and none. | 224 | /** Where a document's relative links (`base`) and pictures (`rawBase`) point. */ |
| 225 | const MarkdownBases = createContext<{ base?: string; rawBase?: string }>({}); | |
| 226 | ||
| 227 | /** A link: a reference or mention within the site, an anchor, an address elsewhere, or a file beside the document. */ | |
| 228 | function MarkdownLink({ href = "", children, node }: { href?: string; children?: ReactNode; node?: { properties?: unknown } }) { | |
| 229 | const { base } = useContext(MarkdownBases); | |
| 230 | const ref = (node?.properties as { dataRef?: string } | undefined)?.dataRef; | |
| 231 | if (ref === "mention") { | |
| 232 | // `@name` may be a person (with a card) or a workspace (none). | |
| 233 | const name = href === G1T_MENTION_HREF ? "g1t" : href.replace(/^\//, ""); | |
| 234 | return ( | |
| 235 | <UserCard username={name}> | |
| 236 | <Link to={href} prefetch="intent" className="font-medium"> | |
| 237 | {children} | |
| 238 | </Link> | |
| 239 | </UserCard> | |
| 240 | ); | |
| 241 | } | |
| 242 | if (ref) { | |
| 243 | return ( | |
| 244 | <Link | |
| 245 | to={href} | |
| 246 | prefetch="intent" | |
| 247 | className={ref === "commit" ? "font-mono text-[0.9em]" : ref === "mention" ? "font-medium" : ""} | |
| 248 | > | |
| 249 | {children} | |
| 250 | </Link> | |
| 251 | ); | |
| 252 | } | |
| 253 | if (href.startsWith("#")) return <a href={href}>{children}</a>; | |
| 254 | if (isExternal(href)) { | |
| 255 | return ( | |
| 256 | <a href={href} rel="noreferrer nofollow ugc" target="_blank"> | |
| 257 | {children} | |
| 258 | </a> | |
| 259 | ); | |
| 260 | } | |
| 261 | // A link within the site, or relative to the document's folder. | |
| 262 | const to = href.startsWith("/") || !base ? href : `${base}/${href.replace(/^\.\//, "")}`; | |
| 263 | return <Link to={to}>{children}</Link>; | |
| 264 | } | |
| 265 | ||
| 266 | /** A picture; a relative one is the document's commit's file. */ | |
| 267 | function MarkdownImage({ src, alt }: { src?: unknown; alt?: string }) { | |
| 268 | const { rawBase } = useContext(MarkdownBases); | |
| 269 | const at = typeof src === "string" ? imageSource(src, rawBase) : undefined; | |
| 270 | return <img src={at} alt={alt ?? ""} loading="lazy" className="inline max-w-full rounded" />; | |
| 271 | } | |
| 272 | ||
| 273 | /** | |
| 274 | * How each element is drawn, made once: a component that is the same on | |
| 275 | * every render keeps the elements it drew, where a new one (even an | |
| 276 | * identical function) has React take them down and put them back. | |
| 277 | */ | |
| 278 | const COMPONENTS: Components = { | |
| 279 | h1: ({ children }) => <Heading level={1}>{children}</Heading>, | |
| 280 | h2: ({ children }) => <Heading level={2}>{children}</Heading>, | |
| 281 | h3: ({ children }) => <Heading level={3}>{children}</Heading>, | |
| 282 | h4: ({ children }) => <Heading level={4}>{children}</Heading>, | |
| 283 | a: MarkdownLink, | |
| 284 | blockquote({ children, node }) { | |
| 285 | const kind = (node?.properties as { dataAlert?: AlertKind } | undefined)?.dataAlert; | |
| 286 | if (!kind || !ALERT[kind]) return <blockquote>{children}</blockquote>; | |
| 287 | const alert = ALERT[kind]; | |
| 288 | return ( | |
| 289 | <div className={`markdown-alert border-l-2 py-1 pl-4 ${alert.tone}`}> | |
| 290 | <p className="alert-title flex items-center gap-2 text-sm font-medium"> | |
| 291 | {alert.icon} | |
| 292 | {alert.title} | |
| 293 | </p> | |
| 294 | <div className="mt-1 [&>*+*]:mt-3">{children}</div> | |
| A README no longer blinks while you read it: the Code page follows pushes and checks and revalidates as they arrive, and each time Markdown handed react-markdown a new set of components (a new function for every heading, link, picture and table), so React took the whole README down and put it back, reloading its pictures. Markdown now keeps the parsed text, the components (made once per link and picture base) and the rendered elements while those stay the same, so a refresh leaves the text untouched. The same holds wherever Markdown is drawn: issues, pull requests, comments and docs. Checked: the site's typecheck, its 901 tests and a production build. | 295 | </div> |
| Pages no longer blink as they refresh: a README stays put through a push, coloured diffs keep their colours, and production's picture is replaced rather than blanked. Markdown made its components for each commit (a README's pictures point at the commit shown), so every push to the branch had React take the whole README down and put it back; the components are now made once and read where links and pictures point from context, so a new commit only updates those addresses. A file in a diff (a commit, a pull request's changes, a comparison) dropped its colours on every refresh, since a refresh hands over a new file with the same lines, and drew them again when it scrolled near; it keeps them while its lines are the same. The production picture on a project's overview went back to its empty frame and "Taking a screenshot…" whenever its address changed (a new deploy) until the new one loaded; the old picture now stays under the new one until it has faded in. In Chat, every one of @g1t's answers was drawn afresh whenever a message arrived, since the repository they link into was compared as an object; it is compared by name. Router updates already run in a transition (React Router's RouterProvider wraps them in startTransition), so a refresh never shows a skeleton again once a page has loaded; that is measured below rather than changed. Checked: the site's typecheck, its 904 tests and a production build, and a harness that mounts the real routes with g1t.sh's own responses for flagon-io/g1t, decoded by React Router as the site does, watching the DOM over revalidations. Elements removed per 5 refreshes with the same data, before → after: commit page 2,495 → 0, every other page measured (overview, Code, a folder, a file, Commits, pull requests, issues, a pull request, an issue, Work, Workflows, a run, Deployments, and the same with the signed-in app shell) 0 → 0, with no skeleton shown again and no layout shift, also with deferred data taking 2.5 s. A push (a new head commit), per 4 refreshes: Code 1,077 → 0 (the README), overview's picture 18 removed and a skeleton shown → a 2-element cross-fade and none. | 296 | ); |
| 297 | }, | |
| 298 | pre({ children }) { | |
| 299 | const code = Array.isArray(children) ? children[0] : children; | |
| 300 | if (isValidElement<{ className?: string; children?: ReactNode }>(code)) { | |
| 301 | const language = /language-([\w+-]+)/.exec(code.props.className ?? "")?.[1] ?? null; | |
| 302 | return <CodeBlock language={language} code={textOf(code.props.children).replace(/\n$/, "")} />; | |
| 303 | } | |
| 304 | return <pre>{children}</pre>; | |
| 305 | }, | |
| 306 | // A wide table scrolls on its own, inside the text, not the page. | |
| 307 | table: ({ children }) => ( | |
| 308 | <div className="overflow-x-auto"> | |
| 309 | <table className="max-sm:[&_td]:min-w-32 max-sm:[&_th]:whitespace-nowrap">{children}</table> | |
| 310 | </div> | |
| 311 | ), | |
| 312 | input({ type, checked, disabled }) { | |
| 313 | // Task list boxes: shown, not editable. | |
| 314 | return type === "checkbox" ? ( | |
| 315 | <Checkbox | |
| 316 | checked={checked === true} | |
| 317 | disabled={disabled !== false} | |
| 318 | aria-label={checked ? "Done" : "Not done"} | |
| 319 | className="mr-1.5 inline-flex translate-y-0.5 disabled:cursor-default disabled:opacity-100" | |
| 320 | /> | |
| 321 | ) : null; | |
| 322 | }, | |
| 323 | img: MarkdownImage, | |
| 324 | }; |
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