test: Replace isomorphic-dompurify with custom DOMPurify wrapper

Removed isomorphic-dompurify in favor of a local utility that provides DOMPurify for both browser and server environments using jsdom. Updated imports in CodeBlock.svelte and MarkdownRenderer.svelte, added src/lib/utils/dompurify.ts, switched dependency from isomorphic-dompurify to jsdom, and updated Vite config to mark jsdom as external.

package-lock.json

@@ -21,7 +21,7 @@
 				"highlight.js": "^11.7.0",
 				"husky": "^9.0.11",
 				"ip-address": "^9.0.5",
-				"isomorphic-dompurify": "2.26.0",
+				"jsdom": "^27.0.0",
 				"json5": "^2.2.3",
 				"katex": "^0.16.21",
 				"lint-staged": "^15.2.7",
@@ -243,6 +243,56 @@
 				"url": "https://github.com/sponsors/antfu"
 			}
 		},
+		"node_modules/@asamuzakjp/css-color": {
+			"version": "4.0.5",
+			"resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-4.0.5.tgz",
+			"integrity": "sha512-lMrXidNhPGsDjytDy11Vwlb6OIGrT3CmLg3VWNFyWkLWtijKl7xjvForlh8vuj0SHGjgl4qZEQzUmYTeQA2JFQ==",
+			"license": "MIT",
+			"dependencies": {
+				"@csstools/css-calc": "^2.1.4",
+				"@csstools/css-color-parser": "^3.1.0",
+				"@csstools/css-parser-algorithms": "^3.0.5",
+				"@csstools/css-tokenizer": "^3.0.4",
+				"lru-cache": "^11.2.1"
+			}
+		},
+		"node_modules/@asamuzakjp/css-color/node_modules/lru-cache": {
+			"version": "11.2.2",
+			"resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.2.2.tgz",
+			"integrity": "sha512-F9ODfyqML2coTIsQpSkRHnLSZMtkU8Q+mSfcaIyKwy58u+8k5nvAYeiNhsyMARvzNcXJ9QfWVrcPsC9e9rAxtg==",
+			"license": "ISC",
+			"engines": {
+				"node": "20 || >=22"
+			}
+		},
+		"node_modules/@asamuzakjp/dom-selector": {
+			"version": "6.6.2",
+			"resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-6.6.2.tgz",
+			"integrity": "sha512-+AG0jN9HTwfDLBhjhX1FKi6zlIAc/YGgEHlN/OMaHD1pOPFsC5CpYQpLkPX0aFjyaVmoq9330cQDCU4qnSL1qA==",
+			"license": "MIT",
+			"dependencies": {
+				"@asamuzakjp/nwsapi": "^2.3.9",
+				"bidi-js": "^1.0.3",
+				"css-tree": "^3.1.0",
+				"is-potential-custom-element-name": "^1.0.1",
+				"lru-cache": "^11.2.2"
+			}
+		},
+		"node_modules/@asamuzakjp/dom-selector/node_modules/lru-cache": {
+			"version": "11.2.2",
+			"resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.2.2.tgz",
+			"integrity": "sha512-F9ODfyqML2coTIsQpSkRHnLSZMtkU8Q+mSfcaIyKwy58u+8k5nvAYeiNhsyMARvzNcXJ9QfWVrcPsC9e9rAxtg==",
+			"license": "ISC",
+			"engines": {
+				"node": "20 || >=22"
+			}
+		},
+		"node_modules/@asamuzakjp/nwsapi": {
+			"version": "2.3.9",
+			"resolved": "https://registry.npmjs.org/@asamuzakjp/nwsapi/-/nwsapi-2.3.9.tgz",
+			"integrity": "sha512-n8GuYSrI9bF7FFZ/SjhwevlHc8xaVlb/7HmHelnc/PZXBD2ZR49NnN9sMMuDdEGPeeRQ5d0hqlSlEpgCX3Wl0Q==",
+			"license": "MIT"
+		},
 		"node_modules/@babel/code-frame": {
 			"version": "7.27.1",
 			"resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
@@ -368,6 +418,28 @@
 				"@csstools/css-tokenizer": "^3.0.4"
 			}
 		},
+		"node_modules/@csstools/css-syntax-patches-for-csstree": {
+			"version": "1.0.14",
+			"resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.0.14.tgz",
+			"integrity": "sha512-zSlIxa20WvMojjpCSy8WrNpcZ61RqfTfX3XTaOeVlGJrt/8HF3YbzgFZa01yTbT4GWQLwfTcC3EB8i3XnB647Q==",
+			"funding": [
+				{
+					"type": "github",
+					"url": "https://github.com/sponsors/csstools"
+				},
+				{
+					"type": "opencollective",
+					"url": "https://opencollective.com/csstools"
+				}
+			],
+			"license": "MIT-0",
+			"engines": {
+				"node": ">=18"
+			},
+			"peerDependencies": {
+				"postcss": "^8.4"
+			}
+		},
 		"node_modules/@csstools/css-tokenizer": {
 			"version": "3.0.4",
 			"resolved": "https://registry.npmjs.org/@csstools/css-tokenizer/-/css-tokenizer-3.0.4.tgz",
@@ -2719,7 +2791,7 @@
 			"version": "2.0.7",
 			"resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz",
 			"integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
-			"devOptional": true,
+			"dev": true,
 			"license": "MIT"
 		},
 		"node_modules/@types/uuid": {
@@ -3433,6 +3505,15 @@
 			],
 			"license": "MIT"
 		},
+		"node_modules/bidi-js": {
+			"version": "1.0.3",
+			"resolved": "https://registry.npmjs.org/bidi-js/-/bidi-js-1.0.3.tgz",
+			"integrity": "sha512-RKshQI1R3YQ+n9YJz2QQ147P66ELpa1FQEg20Dk8oW9t2KgLbpDLLp9aGZ7y8WHSshDknG0bknqGw5/tyCs5tw==",
+			"license": "MIT",
+			"dependencies": {
+				"require-from-string": "^2.0.2"
+			}
+		},
 		"node_modules/binary-extensions": {
 			"version": "2.3.0",
 			"resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
@@ -3905,6 +3986,19 @@
 				"postcss-value-parser": "^4.0.2"
 			}
 		},
+		"node_modules/css-tree": {
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/css-tree/-/css-tree-3.1.0.tgz",
+			"integrity": "sha512-0eW44TGN5SQXU1mWSkKwFstI/22X2bG1nYzZTYMAWjylYURhse752YgbE4Cx46AC+bAvI+/dYTPRk1LqSUnu6w==",
+			"license": "MIT",
+			"dependencies": {
+				"mdn-data": "2.12.2",
+				"source-map-js": "^1.0.1"
+			},
+			"engines": {
+				"node": "^10 || ^12.20.0 || ^14.13.0 || >=15.0.0"
+			}
+		},
 		"node_modules/cssesc": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
@@ -3917,6 +4011,33 @@
 				"node": ">=4"
 			}
 		},
+		"node_modules/cssstyle": {
+			"version": "5.3.1",
+			"resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-5.3.1.tgz",
+			"integrity": "sha512-g5PC9Aiph9eiczFpcgUhd9S4UUO3F+LHGRIi5NUMZ+4xtoIYbHNZwZnWA2JsFGe8OU8nl4WyaEFiZuGuxlutJQ==",
+			"license": "MIT",
+			"dependencies": {
+				"@asamuzakjp/css-color": "^4.0.3",
+				"@csstools/css-syntax-patches-for-csstree": "^1.0.14",
+				"css-tree": "^3.1.0"
+			},
+			"engines": {
+				"node": ">=20"
+			}
+		},
+		"node_modules/data-urls": {
+			"version": "6.0.0",
+			"resolved": "https://registry.npmjs.org/data-urls/-/data-urls-6.0.0.tgz",
+			"integrity": "sha512-BnBS08aLUM+DKamupXs3w2tJJoqU+AkaE/+6vQxi/G/DPmIZFJJp9Dkb1kM03AZx8ADehDUZgsNxju3mPXZYIA==",
+			"license": "MIT",
+			"dependencies": {
+				"whatwg-mimetype": "^4.0.0",
+				"whatwg-url": "^15.0.0"
+			},
+			"engines": {
+				"node": ">=20"
+			}
+		},
 		"node_modules/date-fns": {
 			"version": "2.30.0",
 			"resolved": "https://registry.npmjs.org/date-fns/-/date-fns-2.30.0.tgz",
@@ -4075,6 +4196,7 @@
 			"version": "3.3.0",
 			"resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.3.0.tgz",
 			"integrity": "sha512-r+f6MYR1gGN1eJv0TVQbhA7if/U7P87cdPl3HN5rikqaBSBxLiCb/b9O+2eG0cxz0ghyU+mU1QkbsOwERMYlWQ==",
+			"dev": true,
 			"license": "(MPL-2.0 OR Apache-2.0)",
 			"optionalDependencies": {
 				"@types/trusted-types": "^2.0.7"
@@ -5593,158 +5715,6 @@
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 			"license": "ISC"
 		},
-		"node_modules/isomorphic-dompurify": {
-			"version": "2.26.0",
-			"resolved": "https://registry.npmjs.org/isomorphic-dompurify/-/isomorphic-dompurify-2.26.0.tgz",
-			"integrity": "sha512-nZmoK4wKdzPs5USq4JHBiimjdKSVAOm2T1KyDoadtMPNXYHxiENd19ou4iU/V4juFM6LVgYQnpxCYmxqNP4Obw==",
-			"license": "MIT",
-			"dependencies": {
-				"dompurify": "^3.2.6",
-				"jsdom": "^26.1.0"
-			},
-			"engines": {
-				"node": ">=18"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/@asamuzakjp/css-color": {
-			"version": "3.2.0",
-			"resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-3.2.0.tgz",
-			"integrity": "sha512-K1A6z8tS3XsmCMM86xoWdn7Fkdn9m6RSVtocUrJYIwZnFVkng/PvkEoWtOWmP+Scc6saYWHWZYbndEEXxl24jw==",
-			"license": "MIT",
-			"dependencies": {
-				"@csstools/css-calc": "^2.1.3",
-				"@csstools/css-color-parser": "^3.0.9",
-				"@csstools/css-parser-algorithms": "^3.0.4",
-				"@csstools/css-tokenizer": "^3.0.3",
-				"lru-cache": "^10.4.3"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/cssstyle": {
-			"version": "4.6.0",
-			"resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-4.6.0.tgz",
-			"integrity": "sha512-2z+rWdzbbSZv6/rhtvzvqeZQHrBaqgogqt85sqFNbabZOuFbCVFb8kPeEtZjiKkbrm395irpNKiYeFeLiQnFPg==",
-			"license": "MIT",
-			"dependencies": {
-				"@asamuzakjp/css-color": "^3.2.0",
-				"rrweb-cssom": "^0.8.0"
-			},
-			"engines": {
-				"node": ">=18"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/data-urls": {
-			"version": "5.0.0",
-			"resolved": "https://registry.npmjs.org/data-urls/-/data-urls-5.0.0.tgz",
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-			"dependencies": {
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-				"whatwg-url": "^14.0.0"
-			},
-			"engines": {
-				"node": ">=18"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/jsdom": {
-			"version": "26.1.0",
-			"resolved": "https://registry.npmjs.org/jsdom/-/jsdom-26.1.0.tgz",
-			"integrity": "sha512-Cvc9WUhxSMEo4McES3P7oK3QaXldCfNWp7pl2NNeiIFlCoLr3kfq9kb1fxftiwk1FLV7CvpvDfonxtzUDeSOPg==",
-			"license": "MIT",
-			"dependencies": {
-				"cssstyle": "^4.2.1",
-				"data-urls": "^5.0.0",
-				"decimal.js": "^10.5.0",
-				"html-encoding-sniffer": "^4.0.0",
-				"http-proxy-agent": "^7.0.2",
-				"https-proxy-agent": "^7.0.6",
-				"is-potential-custom-element-name": "^1.0.1",
-				"nwsapi": "^2.2.16",
-				"parse5": "^7.2.1",
-				"rrweb-cssom": "^0.8.0",
-				"saxes": "^6.0.0",
-				"symbol-tree": "^3.2.4",
-				"tough-cookie": "^5.1.1",
-				"w3c-xmlserializer": "^5.0.0",
-				"webidl-conversions": "^7.0.0",
-				"whatwg-encoding": "^3.1.1",
-				"whatwg-mimetype": "^4.0.0",
-				"whatwg-url": "^14.1.1",
-				"ws": "^8.18.0",
-				"xml-name-validator": "^5.0.0"
-			},
-			"engines": {
-				"node": ">=18"
-			},
-			"peerDependencies": {
-				"canvas": "^3.0.0"
-			},
-			"peerDependenciesMeta": {
-				"canvas": {
-					"optional": true
-				}
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/lru-cache": {
-			"version": "10.4.3",
-			"resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.4.3.tgz",
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-			"license": "ISC"
-		},
-		"node_modules/isomorphic-dompurify/node_modules/tldts": {
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-			"resolved": "https://registry.npmjs.org/tldts/-/tldts-6.1.86.tgz",
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-			"license": "MIT",
-			"dependencies": {
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-			},
-			"bin": {
-				"tldts": "bin/cli.js"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/tldts-core": {
-			"version": "6.1.86",
-			"resolved": "https://registry.npmjs.org/tldts-core/-/tldts-core-6.1.86.tgz",
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-			"license": "MIT"
-		},
-		"node_modules/isomorphic-dompurify/node_modules/tough-cookie": {
-			"version": "5.1.2",
-			"resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-5.1.2.tgz",
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-			"license": "BSD-3-Clause",
-			"dependencies": {
-				"tldts": "^6.1.32"
-			},
-			"engines": {
-				"node": ">=16"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/tr46": {
-			"version": "5.1.1",
-			"resolved": "https://registry.npmjs.org/tr46/-/tr46-5.1.1.tgz",
-			"integrity": "sha512-hdF5ZgjTqgAntKkklYw0R03MG2x/bSzTtkxmIRw/sTNV8YXsCJ1tfLAX23lhxhHJlEf3CRCOCGGWw3vI3GaSPw==",
-			"license": "MIT",
-			"dependencies": {
-				"punycode": "^2.3.1"
-			},
-			"engines": {
-				"node": ">=18"
-			}
-		},
-		"node_modules/isomorphic-dompurify/node_modules/whatwg-url": {
-			"version": "14.2.0",
-			"resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-14.2.0.tgz",
-			"integrity": "sha512-De72GdQZzNTUBBChsXueQUnPKDkg/5A5zp7pFDuQAj5UFoENpiACU0wlCvzpAGnTkj++ihpKwKyYewn/XNUbKw==",
-			"license": "MIT",
-			"dependencies": {
-				"tr46": "^5.1.0",
-				"webidl-conversions": "^7.0.0"
-			},
-			"engines": {
-				"node": ">=18"
-			}
-		},
 		"node_modules/jackspeak": {
 			"version": "3.4.3",
 			"resolved": "https://registry.npmjs.org/jackspeak/-/jackspeak-3.4.3.tgz",
@@ -5804,6 +5774,54 @@
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 			"license": "MIT"
 		},
+		"node_modules/jsdom": {
+			"version": "27.0.0",
+			"resolved": "https://registry.npmjs.org/jsdom/-/jsdom-27.0.0.tgz",
+			"integrity": "sha512-lIHeR1qlIRrIN5VMccd8tI2Sgw6ieYXSVktcSHaNe3Z5nE/tcPQYQWOq00wxMvYOsz+73eAkNenVvmPC6bba9A==",
+			"license": "MIT",
+			"dependencies": {
+				"@asamuzakjp/dom-selector": "^6.5.4",
+				"cssstyle": "^5.3.0",
+				"data-urls": "^6.0.0",
+				"decimal.js": "^10.5.0",
+				"html-encoding-sniffer": "^4.0.0",
+				"http-proxy-agent": "^7.0.2",
+				"https-proxy-agent": "^7.0.6",
+				"is-potential-custom-element-name": "^1.0.1",
+				"parse5": "^7.3.0",
+				"rrweb-cssom": "^0.8.0",
+				"saxes": "^6.0.0",
+				"symbol-tree": "^3.2.4",
+				"tough-cookie": "^6.0.0",
+				"w3c-xmlserializer": "^5.0.0",
+				"webidl-conversions": "^8.0.0",
+				"whatwg-encoding": "^3.1.1",
+				"whatwg-mimetype": "^4.0.0",
+				"whatwg-url": "^15.0.0",
+				"ws": "^8.18.2",
+				"xml-name-validator": "^5.0.0"
+			},
+			"engines": {
+				"node": ">=20"
+			},
+			"peerDependencies": {
+				"canvas": "^3.0.0"
+			},
+			"peerDependenciesMeta": {
+				"canvas": {
+					"optional": true
+				}
+			}
+		},
+		"node_modules/jsdom/node_modules/webidl-conversions": {
+			"version": "8.0.0",
+			"resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-8.0.0.tgz",
+			"integrity": "sha512-n4W4YFyz5JzOfQeA8oN7dUYpR+MBP3PIUsn2jLjWXwK5ASUzt0Jc/A5sAUZoCYFJRGF0FBKJ+1JjN43rNdsQzA==",
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=20"
+			}
+		},
 		"node_modules/json-buffer": {
 			"version": "3.0.1",
 			"resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.1.tgz",
@@ -6243,6 +6261,12 @@
 				"node": ">= 0.4"
 			}
 		},
+		"node_modules/mdn-data": {
+			"version": "2.12.2",
+			"resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.12.2.tgz",
+			"integrity": "sha512-IEn+pegP1aManZuckezWCO+XZQDplx1366JoVhTpMpBB1sPey/SbveZQUosKiKiGYjg1wH4pMlNgXbCiYgihQA==",
+			"license": "CC0-1.0"
+		},
 		"node_modules/memory-pager": {
 			"version": "1.5.0",
 			"resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
@@ -6808,12 +6832,6 @@
 				"url": "https://github.com/sponsors/sindresorhus"
 			}
 		},
-		"node_modules/nwsapi": {
-			"version": "2.2.22",
-			"resolved": "https://registry.npmjs.org/nwsapi/-/nwsapi-2.2.22.tgz",
-			"integrity": "sha512-ujSMe1OWVn55euT1ihwCI1ZcAaAU3nxUiDwfDQldc51ZXaB9m2AyOn6/jh1BLe2t/G8xd6uKG1UBF2aZJeg2SQ==",
-			"license": "MIT"
-		},
 		"node_modules/object-assign": {
 			"version": "4.1.1",
 			"resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -7964,6 +7982,15 @@
 				"node": ">= 12.13.0"
 			}
 		},
+		"node_modules/require-from-string": {
+			"version": "2.0.2",
+			"resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
+			"integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=0.10.0"
+			}
+		},
 		"node_modules/resolve": {
 			"version": "1.22.10",
 			"resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.10.tgz",
@@ -9178,6 +9205,24 @@
 				"node": ">=14.0.0"
 			}
 		},
+		"node_modules/tldts": {
+			"version": "7.0.17",
+			"resolved": "https://registry.npmjs.org/tldts/-/tldts-7.0.17.tgz",
+			"integrity": "sha512-Y1KQBgDd/NUc+LfOtKS6mNsC9CCaH+m2P1RoIZy7RAPo3C3/t8X45+zgut31cRZtZ3xKPjfn3TkGTrctC2TQIQ==",
+			"license": "MIT",
+			"dependencies": {
+				"tldts-core": "^7.0.17"
+			},
+			"bin": {
+				"tldts": "bin/cli.js"
+			}
+		},
+		"node_modules/tldts-core": {
+			"version": "7.0.17",
+			"resolved": "https://registry.npmjs.org/tldts-core/-/tldts-core-7.0.17.tgz",
+			"integrity": "sha512-DieYoGrP78PWKsrXr8MZwtQ7GLCUeLxihtjC1jZsW1DnvSMdKPitJSe8OSYDM2u5H6g3kWJZpePqkp43TfLh0g==",
+			"license": "MIT"
+		},
 		"node_modules/to-regex-range": {
 			"version": "5.0.1",
 			"resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
@@ -9216,6 +9261,30 @@
 				"node": ">=6"
 			}
 		},
+		"node_modules/tough-cookie": {
+			"version": "6.0.0",
+			"resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-6.0.0.tgz",
+			"integrity": "sha512-kXuRi1mtaKMrsLUxz3sQYvVl37B0Ns6MzfrtV5DvJceE9bPyspOqk9xxv7XbZWcfLWbFmm997vl83qUWVJA64w==",
+			"license": "BSD-3-Clause",
+			"dependencies": {
+				"tldts": "^7.0.5"
+			},
+			"engines": {
+				"node": ">=16"
+			}
+		},
+		"node_modules/tr46": {
+			"version": "6.0.0",
+			"resolved": "https://registry.npmjs.org/tr46/-/tr46-6.0.0.tgz",
+			"integrity": "sha512-bLVMLPtstlZ4iMQHpFHTR7GAGj2jxi8Dg0s2h2MafAE4uSWF98FC/3MomU51iQAMf8/qDUbKWf5GxuvvVcXEhw==",
+			"license": "MIT",
+			"dependencies": {
+				"punycode": "^2.3.1"
+			},
+			"engines": {
+				"node": ">=20"
+			}
+		},
 		"node_modules/ts-api-utils": {
 			"version": "1.4.3",
 			"resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-1.4.3.tgz",
@@ -9745,6 +9814,28 @@
 				"node": ">=18"
 			}
 		},
+		"node_modules/whatwg-url": {
+			"version": "15.1.0",
+			"resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-15.1.0.tgz",
+			"integrity": "sha512-2ytDk0kiEj/yu90JOAp44PVPUkO9+jVhyf+SybKlRHSDlvOOZhdPIrr7xTH64l4WixO2cP+wQIcgujkGBPPz6g==",
+			"license": "MIT",
+			"dependencies": {
+				"tr46": "^6.0.0",
+				"webidl-conversions": "^8.0.0"
+			},
+			"engines": {
+				"node": ">=20"
+			}
+		},
+		"node_modules/whatwg-url/node_modules/webidl-conversions": {
+			"version": "8.0.0",
+			"resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-8.0.0.tgz",
+			"integrity": "sha512-n4W4YFyz5JzOfQeA8oN7dUYpR+MBP3PIUsn2jLjWXwK5ASUzt0Jc/A5sAUZoCYFJRGF0FBKJ+1JjN43rNdsQzA==",
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=20"
+			}
+		},
 		"node_modules/which": {
 			"version": "2.0.2",
 			"resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",

package.json

@@ -78,7 +78,7 @@
 		"highlight.js": "^11.7.0",
 		"husky": "^9.0.11",
 		"ip-address": "^9.0.5",
-		"isomorphic-dompurify": "2.26.0",
+		"jsdom": "^27.0.0",
 		"json5": "^2.2.3",
 		"katex": "^0.16.21",
 		"lint-staged": "^15.2.7",

src/lib/components/CodeBlock.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
 	import CopyToClipBoardBtn from "./CopyToClipBoardBtn.svelte";
-	import DOMPurify from "isomorphic-dompurify";
+	import DOMPurify from "$lib/utils/dompurify";
 	import HtmlPreviewModal from "./HtmlPreviewModal.svelte";
 	import PlayFilledAlt from "~icons/carbon/play-filled-alt";
 	import EosIconsLoading from "~icons/eos-icons/loading";

src/lib/components/chat/MarkdownRenderer.svelte

@@ -5,7 +5,7 @@
 	import type { IncomingMessage, OutgoingMessage } from "$lib/workers/markdownWorker";
 	import { browser } from "$app/environment";
 
-	import DOMPurify from "isomorphic-dompurify";
+	import DOMPurify from "$lib/utils/dompurify";
 	import { onMount } from "svelte";
 	import { updateDebouncer } from "$lib/utils/updates";
 

src/lib/utils/dompurify.ts

@@ -0,0 +1,20 @@
+// This file provides DOMPurify for both browser and server environments
+// In browser: uses dompurify directly
+// In server: creates a jsdom window and initializes dompurify with it
+
+import { browser } from "$app/environment";
+import dompurify from "dompurify";
+import { JSDOM } from "jsdom";
+
+let DOMPurifyInstance: ReturnType<typeof dompurify>;
+
+if (browser) {
+	// Browser: use dompurify directly
+	DOMPurifyInstance = dompurify;
+} else {
+	// Server: create jsdom window and initialize dompurify
+	const window = new JSDOM("<!DOCTYPE html>").window;
+	DOMPurifyInstance = dompurify(window as unknown as Window);
+}
+
+export default DOMPurifyInstance;

vite.config.ts

@@ -37,7 +37,7 @@ export default defineConfig({
 	},
 	build: {
 		rollupOptions: {
-			external: ["isomorphic-dompurify"],
+			external: ["jsdom"],
 		},
 	},
 	optimizeDeps: {