From 4dd396c34a24d21bcb2a1c77e3544a06db337ba1 Mon Sep 17 00:00:00 2001 From: Mark Saroufim Date: Fri, 6 Feb 2026 20:53:30 -0800 Subject: [PATCH] Add KaTeX math rendering support to problem descriptions Add remark-math and rehype-katex plugins to MarkdownRenderer so that LaTeX math expressions ($...$ for inline, $$...$$ for block) render correctly in problem descriptions and news posts. Co-authored-by: skimberk1 --- frontend/package-lock.json | 246 +++++++++++++++++- frontend/package.json | 3 + .../markdown-renderer/MarkdownRenderer.tsx | 7 +- 3 files changed, 244 insertions(+), 12 deletions(-) diff --git a/frontend/package-lock.json b/frontend/package-lock.json index 881ca47..2ac72a3 100644 --- a/frontend/package-lock.json +++ b/frontend/package-lock.json @@ -15,14 +15,17 @@ "@types/react-syntax-highlighter": "^15.5.13", "dayjs": "^1.11.13", "imurmurhash": "^0.1.4", + "katex": "^0.16.28", "react": "^19.1.0", "react-dom": "^19.1.0", "react-icons": "^5.5.0", "react-markdown": "^10.1.0", "react-router-dom": "^7.6.2", "react-syntax-highlighter": "^15.6.6", + "rehype-katex": "^7.0.1", "rehype-raw": "^7.0.0", "remark-gfm": "^4.0.1", + "remark-math": "^6.0.0", "zustand": "^5.0.7" }, "devDependencies": { @@ -112,6 +115,7 @@ "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.28.0.tgz", "integrity": "sha512-UlLAnTPrFdNGoFtbSXwcGFQBtQZJCNjaN6hQNP3UPvuNXT1i82N26KL3dZeIpNalWywr9IuQuncaAfUaS1g6sQ==", "dev": true, + "peer": true, "dependencies": { "@ampproject/remapping": "^2.2.0", "@babel/code-frame": "^7.27.1", @@ -436,6 +440,7 @@ "url": "https://opencollective.com/csstools" } ], + "peer": true, "engines": { "node": ">=18" }, @@ -458,6 +463,7 @@ "url": "https://opencollective.com/csstools" } ], + "peer": true, "engines": { "node": ">=18" } @@ -514,6 +520,7 @@ "version": "11.14.0", "resolved": "https://registry.npmjs.org/@emotion/react/-/react-11.14.0.tgz", "integrity": "sha512-O000MLDBDdk/EohJPFUqvnp4qnHeYkVP5B0xEG0D/L7cOKP9kefu2DXn8dj74cQfsEzUqh+sr1RzFqiL1o+PpA==", + "peer": true, "dependencies": { "@babel/runtime": "^7.18.3", "@emotion/babel-plugin": "^11.13.5", @@ -554,6 +561,7 @@ "version": "11.14.1", "resolved": "https://registry.npmjs.org/@emotion/styled/-/styled-11.14.1.tgz", "integrity": "sha512-qEEJt42DuToa3gurlH4Qqc1kVpNq8wO8cJtDzU46TjlzWjDlsVyevtYCRijVq3SrHsROS+gVQ8Fnea108GnKzw==", + "peer": true, "dependencies": { "@babel/runtime": "^7.18.3", "@emotion/babel-plugin": "^11.13.5", @@ -1284,6 +1292,7 @@ "version": "7.2.0", "resolved": "https://registry.npmjs.org/@mui/material/-/material-7.2.0.tgz", "integrity": "sha512-NTuyFNen5Z2QY+I242MDZzXnFIVIR6ERxo7vntFi9K1wCgSwvIl0HcAO2OOydKqqKApE6omRiYhpny1ZhGuH7Q==", + "peer": true, "dependencies": { "@babel/runtime": "^7.27.6", "@mui/core-downloads-tracker": "^7.2.0", @@ -1884,8 +1893,7 @@ "version": "5.0.4", "resolved": "https://registry.npmjs.org/@types/aria-query/-/aria-query-5.0.4.tgz", "integrity": "sha512-rfT93uj5s0PRL7EzccGMs3brplhcrghnDoV26NqKhCAS1hVo+WdNsPvE/yb6ilfr5hi2MEk6d5EWJTKdxg8jVw==", - "dev": true, - "peer": true + "dev": true }, "node_modules/@types/babel__core": { "version": "7.20.5", @@ -1985,6 +1993,12 @@ "integrity": 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"node_modules/micromark-factory-destination": { "version": "2.0.1", "resolved": "https://registry.npmjs.org/micromark-factory-destination/-/micromark-factory-destination-2.0.1.tgz", @@ -5239,7 +5399,6 @@ "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-27.5.1.tgz", "integrity": "sha512-Qb1gy5OrP5+zDf2Bvnzdl3jsTf1qXVMazbvCoKhtKqVs4/YK4ozX4gKQJJVyNe+cajNPn0KoC0MC3FUmaHWEmQ==", "dev": true, - "peer": true, "dependencies": { "ansi-regex": "^5.0.1", "ansi-styles": "^5.0.0", @@ -5254,7 +5413,6 @@ "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-5.2.0.tgz", "integrity": "sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==", "dev": true, - "peer": true, "engines": { "node": ">=10" }, @@ -5266,8 +5424,7 @@ "version": "17.0.2", "resolved": "https://registry.npmjs.org/react-is/-/react-is-17.0.2.tgz", "integrity": "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==", - 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"dependencies": { + "@types/hast": "^3.0.0", + "@types/katex": "^0.16.0", + "hast-util-from-html-isomorphic": "^2.0.0", + "hast-util-to-text": "^4.0.0", + "katex": "^0.16.0", + "unist-util-visit-parents": "^6.0.0", + "vfile": "^6.0.0" + }, + "funding": { + "type": "opencollective", + "url": "https://opencollective.com/unified" + } + }, "node_modules/rehype-raw": { "version": "7.0.0", "resolved": "https://registry.npmjs.org/rehype-raw/-/rehype-raw-7.0.0.tgz", @@ -5702,6 +5880,22 @@ "url": "https://opencollective.com/unified" } }, + "node_modules/remark-math": { + "version": "6.0.0", + "resolved": "https://registry.npmjs.org/remark-math/-/remark-math-6.0.0.tgz", + "integrity": "sha512-MMqgnP74Igy+S3WwnhQ7kqGlEerTETXMvJhrUzDikVZ2/uogJCb+WHUg97hK9/jcfc0dkD73s3LN8zU49cTEtA==", + "license": "MIT", + "dependencies": { + "@types/mdast": "^4.0.0", + "mdast-util-math": "^3.0.0", + "micromark-extension-math": "^3.0.0", + "unified": "^11.0.0" + }, + "funding": { + "type": "opencollective", + "url": "https://opencollective.com/unified" + } + }, "node_modules/remark-parse": { "version": "11.0.0", "resolved": "https://registry.npmjs.org/remark-parse/-/remark-parse-11.0.0.tgz", @@ -6107,6 +6301,7 @@ "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.2.tgz", "integrity": "sha512-M7BAV6Rlcy5u+m6oPhAPFgJTzAioX/6B0DxyvDlo9l8+T3nLKbrczg2WLUyzd45L8RqfUMyGPzekbMvX2Ldkwg==", "dev": true, + "peer": true, "engines": { "node": ">=12" }, @@ -6242,6 +6437,7 @@ "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz", "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==", "dev": true, + "peer": true, "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" @@ -6296,6 +6492,20 @@ "url": "https://opencollective.com/unified" } }, + "node_modules/unist-util-find-after": { + "version": "5.0.0", + "resolved": "https://registry.npmjs.org/unist-util-find-after/-/unist-util-find-after-5.0.0.tgz", + "integrity": "sha512-amQa0Ep2m6hE2g72AugUItjbuM8X8cGQnFoHk0pGfrFeT9GZhzN5SW8nRsiGKK7Aif4CrACPENkA6P/Lw6fHGQ==", + "license": "MIT", + "dependencies": { + "@types/unist": "^3.0.0", + "unist-util-is": "^6.0.0" + }, + "funding": { + "type": "opencollective", + "url": "https://opencollective.com/unified" + } + }, "node_modules/unist-util-is": { "version": "6.0.0", "resolved": "https://registry.npmjs.org/unist-util-is/-/unist-util-is-6.0.0.tgz", @@ -6320,6 +6530,20 @@ "url": "https://opencollective.com/unified" } }, + "node_modules/unist-util-remove-position": { + "version": "5.0.0", + "resolved": "https://registry.npmjs.org/unist-util-remove-position/-/unist-util-remove-position-5.0.0.tgz", + "integrity": "sha512-Hp5Kh3wLxv0PHj9m2yZhhLt58KzPtEYKQQ4yxfYFEO7EvHwzyDYnduhHnY1mDxoqr7VUwVuHXk9RXKIiYS1N8Q==", + "license": "MIT", + "dependencies": { + "@types/unist": "^3.0.0", + "unist-util-visit": "^5.0.0" + }, + "funding": { + "type": "opencollective", + "url": "https://opencollective.com/unified" + } + }, "node_modules/unist-util-stringify-position": { "version": "4.0.0", "resolved": "https://registry.npmjs.org/unist-util-stringify-position/-/unist-util-stringify-position-4.0.0.tgz", @@ -6442,6 +6666,7 @@ "resolved": "https://registry.npmjs.org/vite/-/vite-6.3.5.tgz", "integrity": "sha512-cZn6NDFE7wdTpINgs++ZJ4N49W2vRp8LCKrn3Ob1kYNtOo21vfDoaV5GzBfLU4MovSAB8uNRm4jgzVQZ+mBzPQ==", "dev": true, + "peer": true, "dependencies": { "esbuild": "^0.25.0", "fdir": "^6.4.4", @@ -6552,6 +6777,7 @@ "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.2.tgz", "integrity": "sha512-M7BAV6Rlcy5u+m6oPhAPFgJTzAioX/6B0DxyvDlo9l8+T3nLKbrczg2WLUyzd45L8RqfUMyGPzekbMvX2Ldkwg==", "dev": true, + "peer": true, "engines": { "node": ">=12" }, diff --git a/frontend/package.json b/frontend/package.json index b460f6d..f550189 100644 --- a/frontend/package.json +++ b/frontend/package.json @@ -19,14 +19,17 @@ "@types/react-syntax-highlighter": "^15.5.13", "dayjs": "^1.11.13", "imurmurhash": "^0.1.4", + "katex": "^0.16.28", "react": "^19.1.0", "react-dom": "^19.1.0", "react-icons": "^5.5.0", "react-markdown": "^10.1.0", "react-router-dom": "^7.6.2", "react-syntax-highlighter": "^15.6.6", + "rehype-katex": "^7.0.1", "rehype-raw": "^7.0.0", "remark-gfm": "^4.0.1", + "remark-math": "^6.0.0", "zustand": "^5.0.7" }, "devDependencies": { diff --git a/frontend/src/components/markdown-renderer/MarkdownRenderer.tsx b/frontend/src/components/markdown-renderer/MarkdownRenderer.tsx index fadeb6e..f84a40c 100644 --- a/frontend/src/components/markdown-renderer/MarkdownRenderer.tsx +++ b/frontend/src/components/markdown-renderer/MarkdownRenderer.tsx @@ -1,8 +1,11 @@ import React from "react"; import ReactMarkdown from "react-markdown"; +import rehypeKatex from "rehype-katex"; import rehypeRaw from "rehype-raw"; import remarkGfm from "remark-gfm"; +import remarkMath from "remark-math"; import { useTheme } from "@mui/material/styles"; +import "katex/dist/katex.min.css"; type MarkdownRendererProps = { content: string; @@ -48,8 +51,8 @@ const MarkdownRenderer: React.FC = ({ const theme = useTheme(); return ( (