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 type { Comparison, DiffLine, FileDiff } from "@g1t/contracts"; |
| 2 | ||
| 3 | /** A diff line, with its text as highlighted HTML when the language is known. */ | |
| 4 | export type HighlightedLine = DiffLine & { html?: string }; | |
| Large pull requests, commits and comparisons open quickly and no longer risk failing: the Files changed tab of a 206-file pull request sent every file's diff at once, 14,366 table rows drawn on the server (6.7 MB of its 8.7 MB of HTML) and the same lines again in the data the page hydrates from (1.6 MB), with 300 KB of highlighting sent twice. Now the page arrives with the whole file list, tree and counts, and the lines of its first files, about 2,000; every later file holds its place at its height and loads as you scroll near it, eight or so to a request (diff-files.json, cached by the two commits compared, here and in the browser), and a refresh keeps what was loaded. A file with a diff over 1,000 lines (a lockfile, generated code) waits for Load diff; files with comments on their lines come with the page wherever they are; a link to a file (#file-<path>, or #diff-<path>) opens it, loads it at once however large, and keeps it at the top while the files above it fill in. Small changes are sent exactly as before. Highlighting done on the server stops after 16,000 characters rather than 40,000; the rest is coloured in the browser as it comes near, as it already was. The repos service listed the files past its 20,000-line read as binary with no counts, so 126 of this pull request's files said "Binary or large file"; they are now marked omitted, show no counts until read ("126 files not counted" in the toolbar), and load like the rest, read on their own by compare's new paths (at most 50); truncated now means only that more than 300 files changed. get_pull_request_changes and GET /repos/{owner}/{name}/pulls/{number}/changes take paths too, and the mobile app says an omitted file is too large to show there. The pull requests guide gains Files changed, and limitations says how large changes are shown. Checked: the site's typecheck, its 914 tests (new: the first-screens budget, large and commented files, omitted and binary ones, links to a file, and fetching in batches, once, with retries) and a production build; cargo test for contracts, repos (new: omitted files and reading by path), actions, security, work and api; the mobile typecheck; the docs build. Measured on flagon-io/g1t pull 1's real response, before → after: single-fetch data 1,592,101 → 236,252 bytes; the diff's server-rendered HTML 6,694,038 → 1,698,300 bytes (renderToString 62 → 15 ms), so the page's HTML about 8.7 MB → 2.0 MB; in a harness mounting the real routes in Chrome at 1280 px, first render 600 → 270 ms, settled 2,250 → 750 ms, long tasks 1,700 → 500 ms, 84,605 → 17,982 elements; scrolling to the bottom loads all 72 waiting files in 9 requests, and refreshes with the same data remove no elements, before and after files load. Screenshots at 1280 and 390 px looked at. | 5 | export type HighlightedFile = Omit<FileDiff, "hunks"> & { hunks: { lines: HighlightedLine[] }[]; deferred?: Deferred }; |
| Inbox: a bell in the top bar opens it beside the page, and /inbox holds it all | 6 | export type HighlightedComparison = Omit<Comparison, "files"> & { files: HighlightedFile[] }; |
| 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 | 7 | |
| Large pull requests, commits and comparisons open quickly and no longer risk failing: the Files changed tab of a 206-file pull request sent every file's diff at once, 14,366 table rows drawn on the server (6.7 MB of its 8.7 MB of HTML) and the same lines again in the data the page hydrates from (1.6 MB), with 300 KB of highlighting sent twice. Now the page arrives with the whole file list, tree and counts, and the lines of its first files, about 2,000; every later file holds its place at its height and loads as you scroll near it, eight or so to a request (diff-files.json, cached by the two commits compared, here and in the browser), and a refresh keeps what was loaded. A file with a diff over 1,000 lines (a lockfile, generated code) waits for Load diff; files with comments on their lines come with the page wherever they are; a link to a file (#file-<path>, or #diff-<path>) opens it, loads it at once however large, and keeps it at the top while the files above it fill in. Small changes are sent exactly as before. Highlighting done on the server stops after 16,000 characters rather than 40,000; the rest is coloured in the browser as it comes near, as it already was. The repos service listed the files past its 20,000-line read as binary with no counts, so 126 of this pull request's files said "Binary or large file"; they are now marked omitted, show no counts until read ("126 files not counted" in the toolbar), and load like the rest, read on their own by compare's new paths (at most 50); truncated now means only that more than 300 files changed. get_pull_request_changes and GET /repos/{owner}/{name}/pulls/{number}/changes take paths too, and the mobile app says an omitted file is too large to show there. The pull requests guide gains Files changed, and limitations says how large changes are shown. Checked: the site's typecheck, its 914 tests (new: the first-screens budget, large and commented files, omitted and binary ones, links to a file, and fetching in batches, once, with retries) and a production build; cargo test for contracts, repos (new: omitted files and reading by path), actions, security, work and api; the mobile typecheck; the docs build. Measured on flagon-io/g1t pull 1's real response, before → after: single-fetch data 1,592,101 → 236,252 bytes; the diff's server-rendered HTML 6,694,038 → 1,698,300 bytes (renderToString 62 → 15 ms), so the page's HTML about 8.7 MB → 2.0 MB; in a harness mounting the real routes in Chrome at 1280 px, first render 600 → 270 ms, settled 2,250 → 750 ms, long tasks 1,700 → 500 ms, 84,605 → 17,982 elements; scrolling to the bottom loads all 72 waiting files in 9 requests, and refreshes with the same data remove no elements, before and after files load. Screenshots at 1280 and 390 px looked at. | 8 | /** |
| 9 | * A file sent without its lines, which the page fetches when it gets near | |
| 10 | * (components/diff-view.tsx): `lines` is how many it has, null when the | |
| 11 | * comparison did not read them (`omitted`); a `large` one waits to be asked | |
| 12 | * for. | |
| 13 | */ | |
| 14 | export type Deferred = { lines: number | null; large: boolean }; | |
| 15 | ||
| 16 | /** How many diff lines a page is sent with: about its first screens. */ | |
| 17 | export const FIRST_LINES = 2_000; | |
| 18 | /** Past this a file's lines wait for "Load diff": generated files, lockfiles. */ | |
| 19 | export const LARGE_FILE_LINES = 1_000; | |
| 20 | ||
| 21 | /** How many lines a file's diff has. */ | |
| 22 | export function linesOf(file: FileDiff): number { | |
| 23 | return file.hunks.reduce((sum, hunk) => sum + hunk.lines.length, 0); | |
| 24 | } | |
| 25 | ||
| 26 | /** | |
| 27 | * A comparison as a page is sent it: the first files with their lines, | |
| 28 | * until about `budget` lines, and every file after that, and any very large | |
| 29 | * one, with its path and counts only (`deferred`), so a pull request of | |
| 30 | * hundreds of files is not drawn, sent and hydrated all at once. Files | |
| 31 | * named in `eager` (ones with comments on their lines) keep their lines | |
| 32 | * wherever they are. The list itself is whole: the tree and counts show at once. | |
| 33 | */ | |
| 34 | export function firstScreens( | |
| 35 | comparison: Comparison | HighlightedComparison, | |
| 36 | { eager = [], budget = FIRST_LINES, large = LARGE_FILE_LINES }: { eager?: Iterable<string>; budget?: number; large?: number } = {}, | |
| 37 | ): HighlightedComparison { | |
| 38 | const wanted = new Set(eager); | |
| 39 | let spent = 0; | |
| 40 | let full = false; | |
| 41 | const files = comparison.files.map((file): HighlightedFile => { | |
| 42 | if (file.omitted) return { ...file, hunks: [], deferred: { lines: null, large: false } }; | |
| 43 | if (file.binary || file.hunks.length === 0) return file; | |
| 44 | const lines = linesOf(file); | |
| 45 | if (wanted.has(file.path)) { | |
| 46 | spent += lines; | |
| 47 | return file; | |
| 48 | } | |
| 49 | if (lines > large) return { ...file, hunks: [], deferred: { lines, large: true } }; | |
| 50 | // In order, so what is drawn is the top of the change; once one does | |
| 51 | // not fit, the rest wait too. | |
| 52 | if (!full && spent + lines <= budget) { | |
| 53 | spent += lines; | |
| 54 | return file; | |
| 55 | } | |
| 56 | full = true; | |
| 57 | return { ...file, hunks: [], deferred: { lines, large: false } }; | |
| 58 | }); | |
| 59 | return { ...comparison, files }; | |
| 60 | } | |
| 61 | ||
| 62 | /** The file a page's address points to, as `#file-<path>` (or `#diff-<path>`), if it is one of `files`. */ | |
| 63 | export function linkedFile(hash: string, files: { path: string }[]): string | null { | |
| 64 | const match = /^#(?:file|diff)-(.+)$/.exec(hash); | |
| 65 | if (!match) return null; | |
| 66 | let path = match[1]!; | |
| 67 | try { | |
| 68 | path = decodeURIComponent(path); | |
| 69 | } catch { | |
| 70 | // Not encoded: as it is. | |
| 71 | } | |
| 72 | return files.some((file) => file.path === path) ? path : null; | |
| 73 | } | |
| 74 | ||
| 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 | 75 | /** Each hunk's lines' HTML, null for a line without any: what a highlighted file adds to its diff. */ |
| 76 | export type FileHtml = (string | null)[][]; | |
| 77 | ||
| 78 | /** The HTML `highlighted` gives its lines, to keep apart from the diff it came from. */ | |
| 79 | export function htmlOfFile(highlighted: HighlightedFile): FileHtml { | |
| 80 | return highlighted.hunks.map((hunk) => hunk.lines.map((line) => line.html ?? null)); | |
| 81 | } | |
| 82 | ||
| 83 | /** `file` with `html` given back to its lines: the same as the highlighted file it was taken from. */ | |
| 84 | export function withHtml(file: FileDiff, html: FileHtml): HighlightedFile { | |
| 85 | return { | |
| 86 | ...file, | |
| 87 | hunks: file.hunks.map((hunk, h) => ({ | |
| 88 | lines: hunk.lines.map((line, n): HighlightedLine => { | |
| 89 | const row = html[h]?.[n]; | |
| 90 | return row == null ? { ...line } : { ...line, html: row }; | |
| 91 | }), | |
| 92 | })), | |
| 93 | }; | |
| 94 | } | |
| 95 | ||
| 96 | /** | |
| 97 | * What a file's highlighting depends on besides its language: each line's | |
| 98 | * side and text, hunk by hunk. Line numbers and the path do not change the | |
| 99 | * colours, so they are left out. | |
| 100 | */ | |
| 101 | export function diffContent(file: FileDiff): string { | |
| 102 | return JSON.stringify(file.hunks.map((hunk) => hunk.lines.map((line) => [line.kind, line.text]))); | |
| 103 | } |
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