diff --git a/js/package.json b/js/package.json
index e638da9f..cac217cb 100644
--- a/js/package.json
+++ b/js/package.json
@@ -8,7 +8,7 @@
     "mocha": "^10.0.0"
   },
   "scripts": {
-    "fmt": "biome format . --write && biome check . --apply-unsafe",
+    "fmt": "biome format . --write && biome check . --apply-unsafe && biome format . --write",
     "test": "biome ci . && wasm-pack build --debug --target nodejs && mocha",
     "build": "rm -rf pkg && wasm-pack build --release --target web --out-name web && mv pkg pkg-web && wasm-pack build --release --target nodejs --out-name node && mv pkg pkg-node && node build_package.js && rm -r pkg-web && rm -r pkg-node",
     "release": "npm run build && npm publish ./pkg",
diff --git a/js/test/model.mjs b/js/test/model.mjs
index 9e816cfe..b9de0164 100644
--- a/js/test/model.mjs
+++ b/js/test/model.mjs
@@ -6,32 +6,32 @@ import oxigraph from "../pkg/oxigraph.js";
 
 runTests({ factory: oxigraph });
 
-describe("DataModel", function () {
-    describe("#toString()", function () {
-        it("namedNode().toString() should return SPARQL compatible syntax", function () {
+describe("DataModel", () => {
+    describe("#toString()", () => {
+        it("namedNode().toString() should return SPARQL compatible syntax", () => {
             assert.strictEqual(
                 "<http://example.com>",
                 oxigraph.namedNode("http://example.com").toString(),
             );
         });
 
-        it("blankNode().toString() should return SPARQL compatible syntax", function () {
+        it("blankNode().toString() should return SPARQL compatible syntax", () => {
             assert.strictEqual("_:a", oxigraph.blankNode("a").toString());
         });
 
-        it("literal().toString() should return SPARQL compatible syntax", function () {
+        it("literal().toString() should return SPARQL compatible syntax", () => {
             assert.strictEqual('"a\\"b"@en', oxigraph.literal('a"b', "en").toString());
         });
 
-        it("defaultGraph().toString() should return SPARQL compatible syntax", function () {
+        it("defaultGraph().toString() should return SPARQL compatible syntax", () => {
             assert.strictEqual("DEFAULT", oxigraph.defaultGraph().toString());
         });
 
-        it("variable().toString() should return SPARQL compatible syntax", function () {
+        it("variable().toString() should return SPARQL compatible syntax", () => {
             assert.strictEqual("?a", oxigraph.variable("a").toString());
         });
 
-        it("quad().toString() should return SPARQL compatible syntax", function () {
+        it("quad().toString() should return SPARQL compatible syntax", () => {
             assert.strictEqual(
                 "<http://example.com/s> <http://example.com/p> <<<http://example.com/s1> <http://example.com/p1> <http://example.com/o1>>> <http://example.com/g>",
                 oxigraph
diff --git a/js/test/store.mjs b/js/test/store.mjs
index c73560a0..0693ac47 100644
--- a/js/test/store.mjs
+++ b/js/test/store.mjs
@@ -11,17 +11,17 @@ const triple = dataModel.quad(
     dataModel.literal("o"),
 );
 
-describe("Store", function () {
-    describe("#add()", function () {
-        it("an added quad should be in the store", function () {
+describe("Store", () => {
+    describe("#add()", () => {
+        it("an added quad should be in the store", () => {
             const store = new Store();
             store.add(dataModel.quad(ex, ex, triple));
             assert(store.has(dataModel.quad(ex, ex, triple)));
         });
     });
 
-    describe("#delete()", function () {
-        it("an removed quad should not be in the store anymore", function () {
+    describe("#delete()", () => {
+        it("an removed quad should not be in the store anymore", () => {
             const store = new Store([dataModel.quad(triple, ex, ex)]);
             assert(store.has(dataModel.quad(triple, ex, ex)));
             store.delete(dataModel.quad(triple, ex, ex));
@@ -29,22 +29,22 @@ describe("Store", function () {
         });
     });
 
-    describe("#has()", function () {
-        it("an added quad should be in the store", function () {
+    describe("#has()", () => {
+        it("an added quad should be in the store", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             assert(store.has(dataModel.quad(ex, ex, ex)));
         });
     });
 
-    describe("#size()", function () {
-        it("A store with one quad should have 1 for size", function () {
+    describe("#size()", () => {
+        it("A store with one quad should have 1 for size", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             assert.strictEqual(1, store.size);
         });
     });
 
-    describe("#match_quads()", function () {
-        it("blank pattern should return all quads", function () {
+    describe("#match_quads()", () => {
+        it("blank pattern should return all quads", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             const results = store.match();
             assert.strictEqual(1, results.length);
@@ -52,32 +52,32 @@ describe("Store", function () {
         });
     });
 
-    describe("#query()", function () {
-        it("ASK true", function () {
+    describe("#query()", () => {
+        it("ASK true", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             assert.strictEqual(true, store.query("ASK { ?s ?s ?s }"));
         });
 
-        it("ASK false", function () {
+        it("ASK false", () => {
             const store = new Store();
             assert.strictEqual(false, store.query("ASK { FILTER(false)}"));
         });
 
-        it("CONSTRUCT", function () {
+        it("CONSTRUCT", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             const results = store.query("CONSTRUCT { ?s ?p ?o } WHERE { ?s ?p ?o }");
             assert.strictEqual(1, results.length);
             assert(dataModel.quad(ex, ex, ex).equals(results[0]));
         });
 
-        it("SELECT", function () {
+        it("SELECT", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             const results = store.query("SELECT ?s WHERE { ?s ?p ?o }");
             assert.strictEqual(1, results.length);
             assert(ex.equals(results[0].get("s")));
         });
 
-        it("SELECT with NOW()", function () {
+        it("SELECT with NOW()", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             const results = store.query(
                 "SELECT * WHERE { FILTER(2022 <= YEAR(NOW()) && YEAR(NOW()) <= 2100) }",
@@ -85,15 +85,15 @@ describe("Store", function () {
             assert.strictEqual(1, results.length);
         });
 
-        it("SELECT with RAND()", function () {
+        it("SELECT with RAND()", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             const results = store.query("SELECT (RAND() AS ?y) WHERE {}");
             assert.strictEqual(1, results.length);
         });
     });
 
-    describe("#update()", function () {
-        it("INSERT DATA", function () {
+    describe("#update()", () => {
+        it("INSERT DATA", () => {
             const store = new Store();
             store.update(
                 "INSERT DATA { <http://example.com> <http://example.com> <http://example.com> }",
@@ -101,7 +101,7 @@ describe("Store", function () {
             assert.strictEqual(1, store.size);
         });
 
-        it("DELETE DATA", function () {
+        it("DELETE DATA", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             store.update(
                 "DELETE DATA { <http://example.com> <http://example.com> <http://example.com> }",
@@ -109,15 +109,15 @@ describe("Store", function () {
             assert.strictEqual(0, store.size);
         });
 
-        it("DELETE WHERE", function () {
+        it("DELETE WHERE", () => {
             const store = new Store([dataModel.quad(ex, ex, ex)]);
             store.update("DELETE WHERE { ?v ?v ?v }");
             assert.strictEqual(0, store.size);
         });
     });
 
-    describe("#load()", function () {
-        it("load NTriples in the default graph", function () {
+    describe("#load()", () => {
+        it("load NTriples in the default graph", () => {
             const store = new Store();
             store.load(
                 "<http://example.com> <http://example.com> <http://example.com> .",
@@ -126,7 +126,7 @@ describe("Store", function () {
             assert(store.has(dataModel.quad(ex, ex, ex)));
         });
 
-        it("load NTriples in an other graph", function () {
+        it("load NTriples in an other graph", () => {
             const store = new Store();
             store.load(
                 "<http://example.com> <http://example.com> <http://example.com> .",
@@ -137,7 +137,7 @@ describe("Store", function () {
             assert(store.has(dataModel.quad(ex, ex, ex, ex)));
         });
 
-        it("load Turtle with a base IRI", function () {
+        it("load Turtle with a base IRI", () => {
             const store = new Store();
             store.load(
                 "<http://example.com> <http://example.com> <> .",
@@ -147,7 +147,7 @@ describe("Store", function () {
             assert(store.has(dataModel.quad(ex, ex, ex)));
         });
 
-        it("load NQuads", function () {
+        it("load NQuads", () => {
             const store = new Store();
             store.load(
                 "<http://example.com> <http://example.com> <http://example.com> <http://example.com> .",
@@ -156,7 +156,7 @@ describe("Store", function () {
             assert(store.has(dataModel.quad(ex, ex, ex, ex)));
         });
 
-        it("load TriG with a base IRI", function () {
+        it("load TriG with a base IRI", () => {
             const store = new Store();
             store.load(
                 "GRAPH <> { <http://example.com> <http://example.com> <> }",
@@ -167,8 +167,8 @@ describe("Store", function () {
         });
     });
 
-    describe("#dump()", function () {
-        it("dump dataset content", function () {
+    describe("#dump()", () => {
+        it("dump dataset content", () => {
             const store = new Store([dataModel.quad(ex, ex, ex, ex)]);
             assert.strictEqual(
                 "<http://example.com> <http://example.com> <http://example.com> <http://example.com> .\n",
@@ -176,7 +176,7 @@ describe("Store", function () {
             );
         });
 
-        it("dump named graph content", function () {
+        it("dump named graph content", () => {
             const store = new Store([dataModel.quad(ex, ex, ex, ex)]);
             assert.strictEqual(
                 "<http://example.com> <http://example.com> <http://example.com> .\n",
@@ -184,7 +184,7 @@ describe("Store", function () {
             );
         });
 
-        it("dump default graph content", function () {
+        it("dump default graph content", () => {
             const store = new Store([dataModel.quad(ex, ex, ex, ex)]);
             assert.strictEqual("", store.dump("application/n-triples", dataModel.defaultGraph()));
         });