diff --git a/.changeset/khaki-brooms-cheer.md b/.changeset/khaki-brooms-cheer.md
new file mode 100644
index 0000000..3f6775b
--- /dev/null
+++ b/.changeset/khaki-brooms-cheer.md
@@ -0,0 +1,5 @@
+---
+"@hydrofoil/vocabularies": minor
+---
+
+Use `@zazuko/vocabulary-loader`
diff --git a/package-lock.json b/package-lock.json
index 0c5126c..0fd98d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -84,7 +84,6 @@
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       "resolved": "https://registry.npmjs.org/@bergos/jsonparse/-/jsonparse-1.4.1.tgz",
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-      "dev": true,
       "engines": [
         "node >= 0.2.0"
       ],
@@ -336,7 +335,6 @@
       "version": "3.4.1",
       "resolved": "https://registry.npmjs.org/@digitalbazaar/http-client/-/http-client-3.4.1.tgz",
       "integrity": "sha512-Ahk1N+s7urkgj7WvvUND5f8GiWEPfUw0D41hdElaqLgu8wZScI8gdI0q+qWw5N1d35x7GCRH2uk9mi+Uzo9M3g==",
-      "dev": true,
       "dependencies": {
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         "ky-universal": "^0.11.0",
@@ -428,7 +426,6 @@
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       "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-2.1.1.tgz",
       "integrity": "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==",
-      "dev": true,
       "engines": {
         "node": ">=14"
       }
@@ -651,7 +648,6 @@
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/@rdfjs/dataset/-/dataset-2.0.2.tgz",
       "integrity": "sha512-6YJx+5n5Uxzq9dd9I0GGcIo6eopZOPfcsAfxSGX5d+YBzDgVa1cbtEBFnaPyPKiQsOm4+Cr3nwypjpg02YKPlA==",
-      "dev": true,
       "bin": {
         "rdfjs-dataset-test": "bin/test.js"
       }
@@ -659,8 +655,7 @@
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       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/@rdfjs/environment/-/environment-1.0.0.tgz",
-      "integrity": "sha512-+S5YjSvfoQR5r7YQCRCCVHvIEyrWia7FJv2gqM3s5EDfotoAQmFeBagApa9c/eQFi5EiNhmBECE5nB8LIxTaHg==",
-      "dev": true
+      "integrity": "sha512-+S5YjSvfoQR5r7YQCRCCVHvIEyrWia7FJv2gqM3s5EDfotoAQmFeBagApa9c/eQFi5EiNhmBECE5nB8LIxTaHg=="
     },
     "node_modules/@rdfjs/fetch-lite": {
       "version": "3.2.2",
@@ -689,7 +684,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/@rdfjs/formats/-/formats-4.0.0.tgz",
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-      "dev": true,
       "dependencies": {
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         "@rdfjs/parser-n3": "^2.0.1",
@@ -705,7 +699,6 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@rdfjs/namespace/-/namespace-2.0.0.tgz",
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-      "dev": true,
       "dependencies": {
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@@ -714,7 +707,6 @@
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/@rdfjs/parser-jsonld/-/parser-jsonld-2.1.1.tgz",
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-      "dev": true,
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@@ -739,7 +731,6 @@
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       "resolved": "https://registry.npmjs.org/@rdfjs/prefix-map/-/prefix-map-0.1.1.tgz",
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-      "dev": true,
       "dependencies": {
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       }
@@ -748,7 +739,6 @@
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       "resolved": "https://registry.npmjs.org/@rdfjs/serializer-jsonld/-/serializer-jsonld-2.0.1.tgz",
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-      "dev": true,
       "dependencies": {
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         "readable-stream": "^4.5.2"
@@ -758,7 +748,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/@rdfjs/serializer-jsonld-ext/-/serializer-jsonld-ext-4.0.0.tgz",
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-      "dev": true,
       "dependencies": {
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@@ -770,7 +759,6 @@
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       "resolved": "https://registry.npmjs.org/@rdfjs/serializer-ntriples/-/serializer-ntriples-2.0.1.tgz",
       "integrity": "sha512-G1ZI0qaN/MUHxeCwr59JscO2LdyIb6MNQdXOv7NFBZuodyHsxxhJRFmMVn+3SEXeNJbVeEEbWBrLglCUgJ8XjQ==",
-      "dev": true,
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@@ -794,7 +782,6 @@
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       "resolved": "https://registry.npmjs.org/@rdfjs/serializer-turtle/-/serializer-turtle-1.1.2.tgz",
       "integrity": "sha512-jLcFpa2TlyK4Se+fjaI0ur+BtlhFqzmAL3QGczBl8oa8Q15deuVVNaOTGO3pcy/TbMQD4jKv7G9PHw56brjQrA==",
-      "dev": true,
       "dependencies": {
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@@ -810,8 +797,7 @@
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-      "dev": true
+      "integrity": "sha512-nDhpfhx6W6HKsy4HjyLp3H1nbrX1CiUCWhWQwKcYZX1s9GOjcoQTwY7GUUbVec0hzdJDQBR6gnjxtENBDt482Q=="
     },
     "node_modules/@rdfjs/sink": {
       "version": "2.0.1",
@@ -821,14 +807,12 @@
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       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/@rdfjs/sink-map/-/sink-map-2.0.1.tgz",
-      "integrity": "sha512-BwCTTsMN/tfQl6QzD2oHn9A08e4af+hlzAz/d5XXrlOkYMEDUAqFuh2Odj9EbayhAEeN4wA743Mj2yC0/s69rg==",
-      "dev": true
+      "integrity": "sha512-BwCTTsMN/tfQl6QzD2oHn9A08e4af+hlzAz/d5XXrlOkYMEDUAqFuh2Odj9EbayhAEeN4wA743Mj2yC0/s69rg=="
     },
     "node_modules/@rdfjs/term-map": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/@rdfjs/term-map/-/term-map-2.0.1.tgz",
       "integrity": "sha512-kyaq8KfTxnMVclD5trsVkB774Q/4/mj+fwNBRxkMHCu/gTw3S1x7W8ZDFN9Yt1AiRkfG2CQe/b/iLbl5RMHvUQ==",
-      "dev": true,
       "dependencies": {
         "@rdfjs/to-ntriples": "^2.0.0"
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@@ -836,14 +820,12 @@
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-      "integrity": "sha512-nDhpfhx6W6HKsy4HjyLp3H1nbrX1CiUCWhWQwKcYZX1s9GOjcoQTwY7GUUbVec0hzdJDQBR6gnjxtENBDt482Q==",
-      "dev": true
+      "integrity": "sha512-nDhpfhx6W6HKsy4HjyLp3H1nbrX1CiUCWhWQwKcYZX1s9GOjcoQTwY7GUUbVec0hzdJDQBR6gnjxtENBDt482Q=="
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     "node_modules/@rdfjs/term-set": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/@rdfjs/term-set/-/term-set-2.0.2.tgz",
       "integrity": "sha512-XSP+G9Q+QxeRcmTvUyFzdPJtGHdYDWr166UARO8UPhG/thUY2aHw7Qx17KTwTV0auJDSzO43AoJ6v/WdjrJ6pg==",
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@@ -851,20 +833,17 @@
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-      "integrity": "sha512-nDhpfhx6W6HKsy4HjyLp3H1nbrX1CiUCWhWQwKcYZX1s9GOjcoQTwY7GUUbVec0hzdJDQBR6gnjxtENBDt482Q==",
-      "dev": true
+      "integrity": "sha512-nDhpfhx6W6HKsy4HjyLp3H1nbrX1CiUCWhWQwKcYZX1s9GOjcoQTwY7GUUbVec0hzdJDQBR6gnjxtENBDt482Q=="
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       "resolved": "https://registry.npmjs.org/@rdfjs/to-ntriples/-/to-ntriples-3.0.1.tgz",
-      "integrity": "sha512-gjoPAvh4j7AbGMjcDn/8R4cW+d/FPtbfbMM0uQXkyfBFtNUW2iVgrqsgJ65roLc54Y9A2TTFaeeTGSvY9a0HCQ==",
-      "dev": true
+      "integrity": "sha512-gjoPAvh4j7AbGMjcDn/8R4cW+d/FPtbfbMM0uQXkyfBFtNUW2iVgrqsgJ65roLc54Y9A2TTFaeeTGSvY9a0HCQ=="
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     "node_modules/@rdfjs/traverser": {
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@@ -872,14 +851,12 @@
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-      "dev": true
+      "integrity": "sha512-nDhpfhx6W6HKsy4HjyLp3H1nbrX1CiUCWhWQwKcYZX1s9GOjcoQTwY7GUUbVec0hzdJDQBR6gnjxtENBDt482Q=="
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     "node_modules/@rdfjs/tree": {
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@@ -890,7 +867,6 @@
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@@ -959,7 +934,6 @@
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@@ -1029,7 +1003,6 @@
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@@ -1040,7 +1013,6 @@
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@@ -1096,7 +1068,6 @@
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-      "dev": true,
       "peer": true
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     "node_modules/@types/minimist": {
@@ -1108,8 +1079,7 @@
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+      "integrity": "sha512-J8xLz7q2OFulZ2cyGTLE1TbbZcjpno7FaN6zdJNrgAdrJ+DZzh/uFR6YrTb4C+nXakvud8Q4+rbhoIWlYQbUFQ=="
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     "node_modules/@types/normalize-package-data": {
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-      "dev": true,
+      "peer": true,
       "dependencies": {
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@@ -1131,7 +1101,6 @@
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@@ -1141,7 +1110,6 @@
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       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
       "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
-      "dev": true,
       "dependencies": {
         "tr46": "~0.0.3",
         "webidl-conversions": "^3.0.0"
@@ -7895,8 +7826,7 @@
     "node_modules/xmlchars": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
-      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==",
-      "dev": true
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw=="
     },
     "node_modules/y18n": {
       "version": "5.0.8",
@@ -7910,8 +7840,7 @@
     "node_modules/yallist": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
-      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
-      "dev": true
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
     },
     "node_modules/yargs": {
       "version": "17.7.2",
@@ -7976,21 +7905,21 @@
     },
     "src": {
       "name": "@hydrofoil/vocabularies",
-      "version": "1.1.1",
+      "version": "2.0.0",
       "license": "MIT",
       "dependencies": {
-        "@hydrofoil/vocab-code": "^1.0.0",
-        "@hydrofoil/vocab-hex": "^1.0.0",
-        "@hydrofoil/vocab-hydra-box": "^1.0.0",
-        "@hydrofoil/vocab-hyper-auth": "^1.0.0",
-        "@hydrofoil/vocab-hyper-events": "^1.0.0",
-        "@hydrofoil/vocab-hyper-query": "^1.0.0",
-        "@hydrofoil/vocab-knossos": "^1.0.0",
-        "@hydrofoil/vocab-roadshow": "^1.0.0",
+        "@hydrofoil/vocab-code": "^1.0.1",
+        "@hydrofoil/vocab-hex": "^1.0.1",
+        "@hydrofoil/vocab-hydra-box": "^1.0.1",
+        "@hydrofoil/vocab-hyper-auth": "^1.0.1",
+        "@hydrofoil/vocab-hyper-events": "^1.0.1",
+        "@hydrofoil/vocab-hyper-query": "^1.0.1",
+        "@hydrofoil/vocab-knossos": "^1.0.1",
+        "@hydrofoil/vocab-roadshow": "^1.0.1",
         "@rdfjs/parser-n3": "^2.0.1",
         "@zazuko/prefixes": "^2.0.0",
+        "@zazuko/vocabulary-loader": "^1.0.2",
         "commander": "^10.0.0",
-        "rdf-dataset-ext": "^1.1.0",
         "readable-stream": "3 - 4"
       },
       "bin": {
@@ -7998,14 +7927,12 @@
       },
       "devDependencies": {
         "@tpluscode/rdf-ns-builder-generator": "^1.0.0",
-        "@types/rdf-dataset-ext": "^1.0.3",
-        "@types/rdfjs__environment": "^1",
         "@types/rdfjs__parser-n3": "^2.0.1"
       }
     },
     "vocabularies/code": {
       "name": "@hydrofoil/vocab-code",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8013,7 +7940,7 @@
     },
     "vocabularies/hex": {
       "name": "@hydrofoil/vocab-hex",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8021,7 +7948,7 @@
     },
     "vocabularies/hydra-box": {
       "name": "@hydrofoil/vocab-hydra-box",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8029,7 +7956,7 @@
     },
     "vocabularies/hyper-auth": {
       "name": "@hydrofoil/vocab-hyper-auth",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8037,7 +7964,7 @@
     },
     "vocabularies/hyper-events": {
       "name": "@hydrofoil/vocab-hyper-events",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8045,7 +7972,7 @@
     },
     "vocabularies/hyper-query": {
       "name": "@hydrofoil/vocab-hyper-query",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8053,7 +7980,7 @@
     },
     "vocabularies/knossos": {
       "name": "@hydrofoil/vocab-knossos",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
@@ -8061,7 +7988,7 @@
     },
     "vocabularies/roadshow": {
       "name": "@hydrofoil/vocab-roadshow",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@vocabulary/builder": "^1.0.7"
diff --git a/src/index.ts b/src/index.ts
index d6cfc08..5a2a604 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,10 +1,2 @@
-import prefixes from '@zazuko/prefixes'
-import morePrefixes from './prefixes.js'
-
 export { default as prefixes } from './prefixes.js'
 export { vocabularies, loadFile } from './vocabularies.js'
-
-Object.entries(morePrefixes)
-  .forEach(([prefix, namespace]) => {
-    prefixes[prefix] = namespace
-  })
diff --git a/src/package.json b/src/package.json
index ae40d70..caaa4f9 100644
--- a/src/package.json
+++ b/src/package.json
@@ -35,20 +35,16 @@
     "@hydrofoil/vocab-hyper-auth": "^1.0.1",
     "@hydrofoil/vocab-hyper-events": "^1.0.1",
     "@hydrofoil/vocab-hyper-query": "^1.0.1",
-    "@hydrofoil/vocab-roadshow": "^1.0.1",
     "@hydrofoil/vocab-knossos": "^1.0.1",
-    "@rdfjs/dataset": "^2.0.2",
-    "@rdfjs/environment": "^1",
+    "@hydrofoil/vocab-roadshow": "^1.0.1",
     "@rdfjs/parser-n3": "^2.0.1",
     "@zazuko/prefixes": "^2.0.0",
+    "@zazuko/vocabulary-loader": "^1.0.2",
     "commander": "^10.0.0",
-    "rdf-dataset-ext": "^1.1.0",
     "readable-stream": "3 - 4"
   },
   "devDependencies": {
     "@tpluscode/rdf-ns-builder-generator": "^1.0.0",
-    "@types/rdf-dataset-ext": "^1.0.3",
-    "@types/rdfjs__environment": "^1",
     "@types/rdfjs__parser-n3": "^2.0.1"
   },
   "keywords": [
diff --git a/src/prefixes.ts b/src/prefixes.ts
index c1b5983..3a641b8 100644
--- a/src/prefixes.ts
+++ b/src/prefixes.ts
@@ -1,4 +1,6 @@
-const prefixes = {
+import prefixes from '@zazuko/prefixes'
+
+const morePrefixes = {
   code: 'https://code.described.at/',
   'hydra-box': 'http://hydra-box.org/schema/',
   'hyper-auth': 'https://hypermedia.app/auth#',
@@ -9,7 +11,12 @@ const prefixes = {
   hex: 'https://w3id.org/hydra/extension#',
 }
 
-type LocalPrefixes = typeof prefixes
+Object.entries(morePrefixes)
+  .forEach(([prefix, namespace]) => {
+    prefixes[prefix] = namespace
+  })
+
+type LocalPrefixes = typeof morePrefixes
 
 declare module '@zazuko/prefixes/prefixes.js' {
   // eslint-disable-next-line @typescript-eslint/no-empty-interface
diff --git a/src/vocabularies.ts b/src/vocabularies.ts
index 0b783b4..7103acd 100644
--- a/src/vocabularies.ts
+++ b/src/vocabularies.ts
@@ -1,92 +1,6 @@
-/* eslint-disable no-console */
-import { Readable } from 'stream'
-import type { DatasetCore, DatasetCoreFactory, Stream } from '@rdfjs/types'
-import ParserN3 from '@rdfjs/parser-n3'
-import fromStream from 'rdf-dataset-ext/fromStream.js'
-import addAll from 'rdf-dataset-ext/addAll.js'
-import toStream from 'rdf-dataset-ext/toStream.js'
-import E, { Environment } from '@rdfjs/environment/Environment.js'
-import DatasetFactory from '@rdfjs/dataset/Factory.js'
-import { loadDatasetStream } from './loadDataset/index.js'
+import { create } from '@zazuko/vocabulary-loader'
 import prefixes from './prefixes.js'
 
-const defaultFactory = new E([DatasetFactory])
+export { loadFile, Datasets } from '@zazuko/vocabulary-loader'
 
-export type Datasets<D extends DatasetCore> = Partial<Record<keyof typeof prefixes, D>>
-
-type Factory<D extends DatasetCore> = Environment<DatasetCoreFactory<any, any, D>>
-
-interface VocabulariesOptions<D extends DatasetCore> {
-  only?: (keyof typeof prefixes)[] | null
-  factory?: Factory<D>
-}
-
-interface VocabulariesDatasetOptions<D extends DatasetCore> extends VocabulariesOptions<D> {
-  stream?: false
-}
-
-interface VocabulariesStreamOptions<D extends DatasetCore> extends VocabulariesOptions<D> {
-  stream: true
-}
-
-export async function vocabularies<D extends DatasetCore = DatasetCore>(options?: VocabulariesDatasetOptions<D>): Promise<Datasets<D>>
-export async function vocabularies<D extends DatasetCore = DatasetCore>(options: VocabulariesStreamOptions<D>): Promise<Stream & Readable>
-export async function vocabularies<D extends DatasetCore = DatasetCore>(options: VocabulariesDatasetOptions<D> | VocabulariesStreamOptions<D> = {}) {
-  const { only = null, stream = false } = options
-  const factory = options.factory || defaultFactory as unknown as Factory<D>
-  let selectedPrefixes: (keyof typeof prefixes)[] = []
-
-  if (!!only && Array.isArray(only)) {
-    only.forEach((prefix: keyof typeof prefixes) => {
-      if (prefix in prefixes) {
-        selectedPrefixes.push(prefix)
-      } else {
-        console.warn(`unknown prefix '${prefix}'`)
-      }
-    })
-  }
-  if (!selectedPrefixes.length) {
-    selectedPrefixes = Object.keys(prefixes) as any
-  }
-
-  const promises = selectedPrefixes.map((prefix) => loadFile<D>(prefix, { customSelection: !!only, factory }))
-  const datasets: D[] = await Promise.all(promises)
-
-  if (stream !== false) {
-    let combinedDataset = factory.dataset()
-    datasets.forEach((dataset) => {
-      if (dataset && dataset.size) {
-        combinedDataset = addAll(combinedDataset, dataset)
-      }
-    })
-    return toStream(combinedDataset) as any
-  }
-
-  const result: Datasets<D> = {}
-  datasets.forEach((dataset, i) => {
-    if (dataset && dataset.size) {
-      result[selectedPrefixes[i]] = dataset
-    }
-  })
-  return result
-}
-
-interface LoadFileOptions<D extends DatasetCore> {
-  customSelection?: boolean
-  factory: Factory<D>
-}
-
-export async function loadFile<D extends DatasetCore>(prefix: keyof typeof prefixes, { customSelection, factory }: LoadFileOptions<D>): Promise<D> {
-  const parserN3 = new ParserN3()
-  const readStream = await loadDatasetStream(prefix)
-  const quadStream = parserN3.import(readStream)
-
-  const dataset = factory.dataset()
-  await fromStream(dataset, quadStream).catch(() => {
-    if (customSelection) {
-      console.warn(`unavailable prefix '${prefix}'`)
-    }
-  })
-
-  return dataset
-}
+export const vocabularies = create(prefixes)