50:I[707087,["/_next/static/immutable/chunks/2985g-hklwiee.js","/_next/static/immutable/chunks/0qkc3dps_9x_i.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3thksmxn95rly.js","/_next/static/immutable/chunks/15bpbjna9-vr3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/0agonoz1szsjm.js","/_next/static/immutable/chunks/1ynd3dcge2kn1.js","/_next/static/immutable/chunks/0krdn-21gkgjt.js","/_next/static/immutable/chunks/0n9w9riw96l80.js","/_next/static/immutable/chunks/0w75qangey2ys.js","/_next/static/immutable/chunks/1tge7vcvsb70s.js","/_next/static/immutable/chunks/35ju_ac0ysz07.js"],"RegistryDependencies"] 51:I[512940,["/_next/static/immutable/chunks/2985g-hklwiee.js","/_next/static/immutable/chunks/0qkc3dps_9x_i.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3thksmxn95rly.js","/_next/static/immutable/chunks/15bpbjna9-vr3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/0agonoz1szsjm.js","/_next/static/immutable/chunks/1ynd3dcge2kn1.js","/_next/static/immutable/chunks/0krdn-21gkgjt.js","/_next/static/immutable/chunks/0n9w9riw96l80.js","/_next/static/immutable/chunks/0w75qangey2ys.js","/_next/static/immutable/chunks/1tge7vcvsb70s.js","/_next/static/immutable/chunks/35ju_ac0ysz07.js"],"Installation"] 52:I[314491,["/_next/static/immutable/chunks/2985g-hklwiee.js","/_next/static/immutable/chunks/0qkc3dps_9x_i.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3thksmxn95rly.js","/_next/static/immutable/chunks/15bpbjna9-vr3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/0agonoz1szsjm.js","/_next/static/immutable/chunks/1ynd3dcge2kn1.js","/_next/static/immutable/chunks/0krdn-21gkgjt.js","/_next/static/immutable/chunks/0n9w9riw96l80.js","/_next/static/immutable/chunks/0w75qangey2ys.js","/_next/static/immutable/chunks/1tge7vcvsb70s.js","/_next/static/immutable/chunks/35ju_ac0ysz07.js"],"FilesView"] 53:T2498,"use client"; import * as React from "react"; import { codeToHtml } from "shiki"; import { cn } from "@/lib/utils"; type DiffMode = "unified" | "split"; interface CodeDiffViewerProps { oldCode: string; newCode: string; language?: string; mode?: DiffMode; showLineNumbers?: boolean; className?: string; } interface DiffLine { type: "unchanged" | "added" | "removed"; content: string; oldLineNum?: number; newLineNum?: number; } function computeDiff(oldCode: string, newCode: string): DiffLine[] { const oldLines = oldCode.split("\n"); const newLines = newCode.split("\n"); const result: DiffLine[] = []; let oldIdx = 0; let newIdx = 0; let oldLineNum = 1; let newLineNum = 1; while (oldIdx < oldLines.length || newIdx < newLines.length) { const oldLine = oldLines[oldIdx]; const newLine = newLines[newIdx]; if (oldIdx >= oldLines.length) { result.push({ type: "added", content: newLine, newLineNum: newLineNum++, }); newIdx++; } else if (newIdx >= newLines.length) { result.push({ type: "removed", content: oldLine, oldLineNum: oldLineNum++, }); oldIdx++; } else if (oldLine === newLine) { result.push({ type: "unchanged", content: oldLine, oldLineNum: oldLineNum++, newLineNum: newLineNum++, }); oldIdx++; newIdx++; } else { const oldRemaining = oldLines.slice(oldIdx); const newRemaining = newLines.slice(newIdx); const newLineInOld = oldRemaining.indexOf(newLine); const oldLineInNew = newRemaining.indexOf(oldLine); if (newLineInOld === -1 && oldLineInNew === -1) { result.push({ type: "removed", content: oldLine, oldLineNum: oldLineNum++, }); result.push({ type: "added", content: newLine, newLineNum: newLineNum++, }); oldIdx++; newIdx++; } else if ( newLineInOld !== -1 && (oldLineInNew === -1 || newLineInOld <= oldLineInNew) ) { result.push({ type: "removed", content: oldLine, oldLineNum: oldLineNum++, }); oldIdx++; } else { result.push({ type: "added", content: newLine, newLineNum: newLineNum++, }); newIdx++; } } } return result; } function UnifiedDiff({ diff, language, showLineNumbers, }: { diff: DiffLine[]; language: string; showLineNumbers: boolean; }) { const [highlightedLines, setHighlightedLines] = React.useState< Map >(new Map()); React.useEffect(() => { async function highlightAll() { const results = new Map(); for (let i = 0; i < diff.length; i++) { const line = diff[i]; if (line.content) { const html = await codeToHtml(line.content, { lang: language, themes: { light: "github-light", dark: "github-dark" }, defaultColor: false, }); const match = html.match(/]*>([\s\S]*?)<\/code>/); results.set(i, match ? match[1] : line.content); } else { results.set(i, ""); } } setHighlightedLines(results); } highlightAll(); }, [diff, language]); return (

{diff.map((line, idx) => (

{showLineNumbers && (

{line.oldLineNum ?? ""} {line.newLineNum ?? ""}

)} {line.type === "added" ? "+" : line.type === "removed" ? "-" : " "}

))}

); } function SplitDiff({ diff, language, showLineNumbers, }: { diff: DiffLine[]; language: string; showLineNumbers: boolean; }) { const [highlightedLines, setHighlightedLines] = React.useState< Map >(new Map()); const leftLines: DiffLine[] = []; const rightLines: DiffLine[] = []; for (const line of diff) { if (line.type === "unchanged") { leftLines.push(line); rightLines.push(line); } else if (line.type === "removed") { leftLines.push(line); } else { rightLines.push(line); } } const maxLen = Math.max(leftLines.length, rightLines.length); while (leftLines.length < maxLen) leftLines.push({ type: "unchanged", content: "" }); while (rightLines.length < maxLen) rightLines.push({ type: "unchanged", content: "" }); React.useEffect(() => { async function highlightAll() { const results = new Map(); const allLines = [...leftLines, ...rightLines]; for (let i = 0; i < allLines.length; i++) { const line = allLines[i]; if (line.content) { const html = await codeToHtml(line.content, { lang: language, themes: { light: "github-light", dark: "github-dark" }, defaultColor: false, }); const match = html.match(/]*>([\s\S]*?)<\/code>/); results.set(i, match ? match[1] : line.content); } else { results.set(i, ""); } } setHighlightedLines(results); } highlightAll(); }, [diff, language]); return (

{leftLines.map((line, idx) => (

{showLineNumbers && ( {line.oldLineNum ?? ""} )} {line.type === "removed" ? "-" : " "}

))}

{rightLines.map((line, idx) => (

{showLineNumbers && ( {line.newLineNum ?? ""} )} {line.type === "added" ? "+" : " "}

))}

); } export function CodeDiffViewer({ oldCode, newCode, language = "typescript", mode = "unified", showLineNumbers = true, className, }: CodeDiffViewerProps) { const diff = React.useMemo( () => computeDiff(oldCode, newCode), [oldCode, newCode], ); return (

{mode === "unified" ? ( ) : ( )}

); } export type { CodeDiffViewerProps, DiffMode }; 4c:["$","div",null,{"className":"flex flex-col gap-12","children":[["$","div",null,{"className":"pt-10 flex flex-col gap-4","children":[["$","ul",null,{"className":"flex gap-2 flex-wrap","children":[["$","li","shiki",{"children":["$","a",null,{"href":"https://www.npmjs.com/package/shiki","target":"_blank","rel":"noopener noreferrer","className":"rounded-md border p-2 text-sm flex items-center gap-1 ","children":[["$","svg",null,{"viewBox":"0 0 24 24","className":"size-3","children":["$","path",null,{"d":"M1.763 0C.786 0 0 .786 0 1.763v20.474C0 23.214.786 24 1.763 24h20.474c.977 0 1.763-.786 1.763-1.763V1.763C24 .786 23.214 0 22.237 0zM5.13 5.323l13.837.019-.009 13.836h-3.464l.01-10.382h-3.456L12.04 19.17H5.113z","fill":"currentColor"}]}],["$","span",null,{"className":"text-xs font-medium","children":"shiki"}]]}]}]]}],["$","$L50",null,{"registryDependencies":[]}]]}],["$","$L51",null,{"sourceUrl":"https://www.tryelements.dev/r/code-diff-viewer.json","proxyUrl":"https://shadcnregistry.com/r/elements/code-diff-viewer","itemId":"@elements/code-diff-viewer"}],["$","section",null,{"className":"flex flex-col gap-4","id":"files","children":[["$","h2",null,{"className":"text-lg md:text-2xl font-bold font-mono","children":"Files"}],["$","$L52",null,{"files":[{"path":"registry/default/blocks/devtools/code-diff-viewer/components/elements/code-diff-viewer.tsx","content":"$53","type":"registry:component"}]}]]}],"$L54"]}]

Code Diff Viewer

Installation

Files

components

Styles