diff --git a/packages/turf-great-circle/README.md b/packages/turf-great-circle/README.md
index 30eae73ae8..1ce96a423a 100644
--- a/packages/turf-great-circle/README.md
+++ b/packages/turf-great-circle/README.md
@@ -17,8 +17,7 @@ then a `LineString` will be returned with duplicate coordinates the length of th
 
     *   `options.properties` **[Object][4]** line feature properties (optional, default `{}`)
     *   `options.npoints` **[number][5]** number of points (optional, default `100`)
-    *   `options.offset` **[number][5]** offset controls the likelyhood that lines will
-        be split which cross the dateline. The higher the number the more likely. (optional, default `10`)
+    *   `options.offset` **[number][5]?** NOTE: deprecated: Antimeridian splitting is now automatic and this option has no effect
 
 ### Examples
 
diff --git a/packages/turf-great-circle/index.ts b/packages/turf-great-circle/index.ts
index 4824e49c11..f727568dd7 100644
--- a/packages/turf-great-circle/index.ts
+++ b/packages/turf-great-circle/index.ts
@@ -22,8 +22,7 @@ import { GreatCircle } from "arc";
  * @param {Object} [options={}] Optional parameters
  * @param {Object} [options.properties={}] line feature properties
  * @param {number} [options.npoints=100] number of points
- * @param {number} [options.offset=10] offset controls the likelyhood that lines will
- * be split which cross the dateline. The higher the number the more likely.
+ * @param {number} [options.offset] NOTE: deprecated: Antimeridian splitting is now automatic and this option has no effect
  * @returns {Feature<LineString | MultiLineString>} great circle line feature
  * @example
  * var start = turf.point([-122, 48]);
@@ -45,7 +44,7 @@ function greatCircle(
 ): Feature<LineString | MultiLineString> {
   // Optional parameters
   if (typeof options !== "object") throw new Error("options is invalid");
-  const { properties = {}, npoints = 100, offset = 10 } = options;
+  const { properties = {}, npoints = 100 } = options;
 
   const startCoord = getCoord(start);
   const endCoord = getCoord(end);
@@ -61,7 +60,7 @@ function greatCircle(
     properties || {}
   );
 
-  const line = generator.Arc(npoints, { offset: offset });
+  const line = generator.Arc(npoints);
 
   return line.json() as Feature<
     LineString | MultiLineString,
diff --git a/packages/turf-great-circle/package.json b/packages/turf-great-circle/package.json
index c14ba28ce3..f7005e4f17 100644
--- a/packages/turf-great-circle/package.json
+++ b/packages/turf-great-circle/package.json
@@ -73,7 +73,7 @@
     "@turf/helpers": "workspace:*",
     "@turf/invariant": "workspace:*",
     "@types/geojson": "catalog:",
-    "arc": "^0.2.0",
+    "arc": "^1.0.0",
     "tslib": "catalog:"
   }
 }
diff --git a/packages/turf-great-circle/test.ts b/packages/turf-great-circle/test.ts
index 31ab691e20..d970751928 100644
--- a/packages/turf-great-circle/test.ts
+++ b/packages/turf-great-circle/test.ts
@@ -7,6 +7,7 @@ import { writeJsonFileSync } from "write-json-file";
 import type {
   FeatureCollection,
   LineString,
+  MultiLineString,
   Feature,
   Geometry,
   Point,
@@ -40,6 +41,12 @@ function getStartEndPoints(fixture: (typeof fixtures)[0]) {
   return { start, end };
 }
 
+function getFixture(name: string) {
+  const fixture = fixtures.find((f) => f.name === name);
+  if (!fixture) throw new Error(`fixture not found: ${name}`);
+  return fixture;
+}
+
 test("turf-great-circle", (t) => {
   fixtures.forEach((fixture) => {
     const name = fixture.name;
@@ -77,7 +84,7 @@ test("turf-great-circle with same input and output", (t) => {
 });
 
 test("turf-great-circle accepts Feature<Point> inputs", (t) => {
-  const { start, end } = getStartEndPoints(fixtures[0]);
+  const { start, end } = getStartEndPoints(getFixture("basic"));
   t.doesNotThrow(
     () => greatCircle(start, end),
     "accepts Feature<Point> inputs"
@@ -86,7 +93,7 @@ test("turf-great-circle accepts Feature<Point> inputs", (t) => {
 });
 
 test("turf-great-circle accepts Point geometry inputs", (t) => {
-  const { start, end } = getStartEndPoints(fixtures[0]);
+  const { start, end } = getStartEndPoints(getFixture("basic"));
   t.doesNotThrow(
     () => greatCircle(start.geometry, end.geometry),
     "accepts Point geometry inputs"
@@ -95,7 +102,7 @@ test("turf-great-circle accepts Point geometry inputs", (t) => {
 });
 
 test("turf-great-circle accepts Position inputs", (t) => {
-  const { start, end } = getStartEndPoints(fixtures[0]);
+  const { start, end } = getStartEndPoints(getFixture("basic"));
   t.doesNotThrow(
     () => greatCircle(start.geometry.coordinates, end.geometry.coordinates),
     "accepts Position inputs"
@@ -104,7 +111,7 @@ test("turf-great-circle accepts Position inputs", (t) => {
 });
 
 test("turf-great-circle applies custom properties", (t) => {
-  const { start, end } = getStartEndPoints(fixtures[0]);
+  const { start, end } = getStartEndPoints(getFixture("basic"));
   const withProperties = greatCircle(start, end, {
     properties: { name: "Test Route" },
   });
@@ -117,7 +124,7 @@ test("turf-great-circle applies custom properties", (t) => {
 });
 
 test("turf-great-circle respects npoints option", (t) => {
-  const { start, end } = getStartEndPoints(fixtures[0]);
+  const { start, end } = getStartEndPoints(getFixture("basic"));
   const withCustomPoints = greatCircle(start, end, { npoints: 5 });
   t.equal(
     (withCustomPoints.geometry as LineString).coordinates.length,
@@ -127,13 +134,12 @@ test("turf-great-circle respects npoints option", (t) => {
   t.end();
 });
 
-test("turf-great-circle respects offset and npoints options", (t) => {
-  const { start, end } = getStartEndPoints(fixtures[0]);
-  const withOffset = greatCircle(start, end, { offset: 100, npoints: 10 });
-  t.equal(
-    (withOffset.geometry as LineString).coordinates.length,
-    10,
-    "respects offset and npoints options"
+test("turf-great-circle offset option is accepted but has no effect", (t) => {
+  const { start, end } = getStartEndPoints(getFixture("basic"));
+  // NOTE: offset is deprecated and a no-op since arc@1.0.0; antimeridian splitting is automatic with a MultiLineString result when needed. This test ensures that the option is accepted without throwing, but does not verify any behavior since it has no effect.
+  t.doesNotThrow(
+    () => greatCircle(start, end, { offset: 100, npoints: 10 }),
+    "accepts offset option without throwing"
   );
   t.end();
 });
@@ -150,3 +156,41 @@ test("turf-great-circle with antipodal start and end", (t) => {
 
   t.end();
 });
+
+// Antimeridian crossing fixtures. Each route crosses the international dateline and must produce a MultiLineString with segments that close and open exactly at ±180°.
+[
+  "antimeridian-tokyo-lax",
+  "antimeridian-auckland-lax",
+  "antimeridian-shanghai-sfo",
+].forEach((fixtureName) => {
+  test(`turf-great-circle antimeridian split: ${fixtureName}`, (t) => {
+    const { start, end } = getStartEndPoints(getFixture(fixtureName));
+    // NOTE: npoints=10 reproduces the original bug https://github.com/Turfjs/turf/issues/3030 (also confirmed by @jgravois)
+    const result = greatCircle(start, end, { npoints: 10 });
+    const geom = result.geometry as MultiLineString;
+
+    t.equal(
+      geom.type,
+      "MultiLineString",
+      "produces MultiLineString across antimeridian"
+    );
+
+    const lastOfFirst = geom.coordinates[0].at(-1)!;
+    const firstOfSecond = geom.coordinates[1][0];
+
+    t.ok(
+      Math.abs(Math.abs(lastOfFirst[0]) - 180) < 0.001,
+      "first segment ends at ±180°"
+    );
+    t.ok(
+      Math.abs(Math.abs(firstOfSecond[0]) - 180) < 0.001,
+      "second segment starts at ±180°"
+    );
+    t.ok(
+      Math.abs(lastOfFirst[1] - firstOfSecond[1]) < 0.001,
+      "latitude matches at antimeridian split"
+    );
+
+    t.end();
+  });
+});
diff --git a/packages/turf-great-circle/test/in/antimeridian-auckland-lax.geojson b/packages/turf-great-circle/test/in/antimeridian-auckland-lax.geojson
new file mode 100644
index 0000000000..e2b4e460c4
--- /dev/null
+++ b/packages/turf-great-circle/test/in/antimeridian-auckland-lax.geojson
@@ -0,0 +1,21 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "properties": { "name": "Auckland" },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [174.79, -36.85]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": { "name": "Los Angeles" },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-118.41, 33.94]
+      }
+    }
+  ]
+}
diff --git a/packages/turf-great-circle/test/in/antimeridian-shanghai-sfo.geojson b/packages/turf-great-circle/test/in/antimeridian-shanghai-sfo.geojson
new file mode 100644
index 0000000000..be713a6708
--- /dev/null
+++ b/packages/turf-great-circle/test/in/antimeridian-shanghai-sfo.geojson
@@ -0,0 +1,21 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "properties": { "name": "Shanghai" },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [121.81, 31.14]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": { "name": "San Francisco" },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-122.38, 37.62]
+      }
+    }
+  ]
+}
diff --git a/packages/turf-great-circle/test/in/antimeridian-tokyo-lax.geojson b/packages/turf-great-circle/test/in/antimeridian-tokyo-lax.geojson
new file mode 100644
index 0000000000..477d897494
--- /dev/null
+++ b/packages/turf-great-circle/test/in/antimeridian-tokyo-lax.geojson
@@ -0,0 +1,21 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "properties": { "name": "Tokyo" },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [139.7798, 35.5494]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": { "name": "Los Angeles" },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-118.4085, 33.9416]
+      }
+    }
+  ]
+}
diff --git a/packages/turf-great-circle/test/out/antimeridian-auckland-lax.geojson b/packages/turf-great-circle/test/out/antimeridian-auckland-lax.geojson
new file mode 100644
index 0000000000..0611986e31
--- /dev/null
+++ b/packages/turf-great-circle/test/out/antimeridian-auckland-lax.geojson
@@ -0,0 +1,140 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "geometry": {
+        "type": "MultiLineString",
+        "coordinates": [
+          [
+            [174.79, -36.85],
+            [175.691979, -36.23329],
+            [176.579765, -35.609916],
+            [177.453753, -34.980132],
+            [178.314335, -34.344181],
+            [179.161902, -33.7023],
+            [179.996841, -33.054717],
+            [180, -33.052238]
+          ],
+          [
+            [-180, -33.052238],
+            [-179.180464, -32.401654],
+            [-178.369634, -31.743323],
+            [-177.570293, -31.079931],
+            [-176.782073, -30.411677],
+            [-176.004608, -29.738754],
+            [-175.237542, -29.061348],
+            [-174.480521, -28.379638],
+            [-173.7332, -27.693799],
+            [-172.995237, -27.003999],
+            [-172.266299, -26.310402],
+            [-171.546059, -25.613163],
+            [-170.834194, -24.912436],
+            [-170.13039, -24.208369],
+            [-169.434337, -23.501103],
+            [-168.745734, -22.790779],
+            [-168.064281, -22.07753],
+            [-167.38969, -21.361486],
+            [-166.721673, -20.642774],
+            [-166.059951, -19.921517],
+            [-165.404251, -19.197834],
+            [-164.754301, -18.471841],
+            [-164.109839, -17.743652],
+            [-163.470605, -17.013375],
+            [-162.836345, -16.281118],
+            [-162.206808, -15.546986],
+            [-161.581749, -14.811081],
+            [-160.960926, -14.073502],
+            [-160.344102, -13.334346],
+            [-159.731042, -12.593709],
+            [-159.121517, -11.851685],
+            [-158.515298, -11.108364],
+            [-157.912163, -10.363837],
+            [-157.31189, -9.618192],
+            [-156.714261, -8.871515],
+            [-156.119059, -8.123892],
+            [-155.526072, -7.375407],
+            [-154.935089, -6.626144],
+            [-154.345899, -5.876184],
+            [-153.758295, -5.125609],
+            [-153.17207, -4.374499],
+            [-152.587021, -3.622933],
+            [-152.002943, -2.870992],
+            [-151.419634, -2.118753],
+            [-150.836891, -1.366295],
+            [-150.254514, -0.613695],
+            [-149.6723, 0.138967],
+            [-149.090048, 0.891616],
+            [-148.507559, 1.644172],
+            [-147.924631, 2.396558],
+            [-147.341061, 3.148697],
+            [-146.756648, 3.900508],
+            [-146.171189, 4.651915],
+            [-145.584479, 5.402837],
+            [-144.996314, 6.153194],
+            [-144.406486, 6.902906],
+            [-143.814787, 7.651892],
+            [-143.221007, 8.400068],
+            [-142.624934, 9.147351],
+            [-142.026353, 9.893657],
+            [-141.425049, 10.6389],
+            [-140.820801, 11.382992],
+            [-140.213388, 12.125845],
+            [-139.602584, 12.867367],
+            [-138.988161, 13.607468],
+            [-138.369888, 14.346053],
+            [-137.747528, 15.083025],
+            [-137.120844, 15.818288],
+            [-136.489592, 16.551739],
+            [-135.853525, 17.283277],
+            [-135.21239, 18.012796],
+            [-134.565932, 18.740187],
+            [-133.91389, 19.46534],
+            [-133.255998, 20.188141],
+            [-132.591984, 20.908472],
+            [-131.921572, 21.626213],
+            [-131.24448, 22.34124],
+            [-130.560422, 23.053425],
+            [-129.869102, 23.762635],
+            [-129.170223, 24.468736],
+            [-128.463479, 25.171587],
+            [-127.748558, 25.871043],
+            [-127.025144, 26.566955],
+            [-126.292912, 27.259169],
+            [-125.551532, 27.947526],
+            [-124.800669, 28.63186],
+            [-124.039979, 29.312001],
+            [-123.269115, 29.987773],
+            [-122.487721, 30.658994],
+            [-121.695437, 31.325475],
+            [-120.891897, 31.987022],
+            [-120.076729, 32.643432],
+            [-119.249557, 33.294497],
+            [-118.41, 33.94]
+          ]
+        ]
+      },
+      "properties": {}
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "name": "Auckland"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [174.79, -36.85]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "name": "Los Angeles"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-118.41, 33.94]
+      }
+    }
+  ]
+}
diff --git a/packages/turf-great-circle/test/out/antimeridian-shanghai-sfo.geojson b/packages/turf-great-circle/test/out/antimeridian-shanghai-sfo.geojson
new file mode 100644
index 0000000000..6229b88444
--- /dev/null
+++ b/packages/turf-great-circle/test/out/antimeridian-shanghai-sfo.geojson
@@ -0,0 +1,140 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "geometry": {
+        "type": "MultiLineString",
+        "coordinates": [
+          [
+            [121.81, 31.14],
+            [122.562652, 31.766723],
+            [123.325533, 32.388961],
+            [124.098958, 33.006541],
+            [124.883247, 33.619284],
+            [125.678723, 34.227007],
+            [126.485712, 34.829519],
+            [127.304544, 35.426624],
+            [128.135549, 36.018119],
+            [128.97906, 36.603796],
+            [129.835411, 37.183437],
+            [130.704936, 37.756821],
+            [131.587966, 38.323717],
+            [132.484834, 38.883889],
+            [133.395868, 39.437092],
+            [134.321391, 39.983075],
+            [135.261721, 40.521579],
+            [136.217172, 41.052338],
+            [137.188045, 41.575078],
+            [138.174634, 42.089519],
+            [139.177221, 42.595372],
+            [140.196071, 43.092342],
+            [141.231436, 43.580127],
+            [142.283547, 44.058416],
+            [143.352617, 44.526895],
+            [144.438832, 44.985241],
+            [145.542356, 45.433126],
+            [146.663319, 45.870216],
+            [147.801824, 46.296174],
+            [148.957937, 46.710656],
+            [150.131685, 47.113316],
+            [151.323058, 47.503806],
+            [152.531998, 47.881774],
+            [153.758403, 48.246867],
+            [155.00212, 48.598734],
+            [156.262945, 48.937023],
+            [157.540619, 49.261385],
+            [158.834823, 49.571475],
+            [160.145183, 49.866952],
+            [161.471261, 50.147482],
+            [162.812557, 50.412738],
+            [164.168509, 50.662404],
+            [165.538492, 50.896172],
+            [166.921816, 51.11375],
+            [168.31773, 51.314856],
+            [169.725421, 51.499227],
+            [171.144017, 51.666615],
+            [172.572591, 51.816793],
+            [174.010163, 51.949552],
+            [175.455703, 52.064704],
+            [176.908137, 52.162086],
+            [178.366355, 52.241557],
+            [179.82921, 52.303002],
+            [180, 52.308988]
+          ],
+          [
+            [-180, 52.308988],
+            [-178.70447, 52.34633],
+            [-177.235878, 52.371478],
+            [-175.766218, 52.378408],
+            [-174.296704, 52.367111],
+            [-172.828546, 52.337602],
+            [-171.362949, 52.289925],
+            [-169.901099, 52.224151],
+            [-168.444164, 52.140377],
+            [-166.993282, 52.038722],
+            [-165.549555, 51.919335],
+            [-164.114048, 51.782385],
+            [-162.687777, 51.628063],
+            [-161.271712, 51.456583],
+            [-159.866766, 51.268179],
+            [-158.473797, 51.063101],
+            [-157.093604, 50.841617],
+            [-155.726923, 50.604012],
+            [-154.374428, 50.350582],
+            [-153.03673, 50.081636],
+            [-151.714376, 49.797494],
+            [-150.40785, 49.498485],
+            [-149.117575, 49.184943],
+            [-147.843912, 48.857212],
+            [-146.587165, 48.515638],
+            [-145.34758, 48.160569],
+            [-144.125348, 47.792359],
+            [-142.92061, 47.411358],
+            [-141.733458, 47.01792],
+            [-140.563936, 46.612395],
+            [-139.412047, 46.195131],
+            [-138.277753, 45.766475],
+            [-137.160979, 45.326767],
+            [-136.061617, 44.876345],
+            [-134.979526, 44.415542],
+            [-133.914538, 43.944683],
+            [-132.866459, 43.464089],
+            [-131.835074, 42.974076],
+            [-130.820145, 42.47495],
+            [-129.821417, 41.967012],
+            [-128.83862, 41.450556],
+            [-127.871469, 40.925869],
+            [-126.91967, 40.393229],
+            [-125.982916, 39.852909],
+            [-125.060895, 39.305173],
+            [-124.153286, 38.750277],
+            [-123.259764, 38.188472],
+            [-122.38, 37.62]
+          ]
+        ]
+      },
+      "properties": {}
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "name": "Shanghai"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [121.81, 31.14]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "name": "San Francisco"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-122.38, 37.62]
+      }
+    }
+  ]
+}
diff --git a/packages/turf-great-circle/test/out/antimeridian-tokyo-lax.geojson b/packages/turf-great-circle/test/out/antimeridian-tokyo-lax.geojson
new file mode 100644
index 0000000000..1ea95644eb
--- /dev/null
+++ b/packages/turf-great-circle/test/out/antimeridian-tokyo-lax.geojson
@@ -0,0 +1,140 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "geometry": {
+        "type": "MultiLineString",
+        "coordinates": [
+          [
+            [139.7798, 35.5494],
+            [140.597651, 35.997257],
+            [141.424784, 36.439499],
+            [142.261337, 36.875971],
+            [143.107439, 37.306512],
+            [143.963218, 37.730961],
+            [144.828789, 38.149153],
+            [145.704266, 38.56092],
+            [146.589751, 38.966091],
+            [147.485336, 39.364495],
+            [148.391108, 39.755957],
+            [149.30714, 40.140298],
+            [150.233494, 40.51734],
+            [151.170222, 40.886902],
+            [152.117361, 41.248801],
+            [153.074936, 41.602853],
+            [154.042956, 41.948872],
+            [155.021415, 42.286672],
+            [156.010292, 42.616066],
+            [157.009548, 42.936866],
+            [158.019125, 43.248885],
+            [159.038948, 43.551936],
+            [160.068922, 43.845831],
+            [161.108933, 44.130385],
+            [162.158843, 44.405415],
+            [163.218496, 44.670737],
+            [164.287713, 44.926173],
+            [165.366291, 45.171544],
+            [166.454008, 45.406676],
+            [167.550615, 45.6314],
+            [168.655842, 45.845548],
+            [169.769396, 46.048961],
+            [170.89096, 46.241482],
+            [172.020195, 46.422959],
+            [173.15674, 46.59325],
+            [174.30021, 46.752216],
+            [175.4502, 46.899728],
+            [176.606286, 47.035662],
+            [177.768022, 47.159904],
+            [178.934945, 47.272349],
+            [180, 47.364262]
+          ],
+          [
+            [-180, 47.364262],
+            [-179.893427, 47.372899],
+            [-178.71759, 47.461467],
+            [-177.538056, 47.537976],
+            [-176.355348, 47.602357],
+            [-175.170001, 47.654554],
+            [-173.982561, 47.69452],
+            [-172.793579, 47.722218],
+            [-171.603613, 47.737624],
+            [-170.413224, 47.740724],
+            [-169.222975, 47.731515],
+            [-168.033427, 47.710006],
+            [-166.845141, 47.676215],
+            [-165.658671, 47.630174],
+            [-164.474567, 47.571923],
+            [-163.293368, 47.501514],
+            [-162.115604, 47.419011],
+            [-160.941793, 47.324485],
+            [-159.772439, 47.21802],
+            [-158.608032, 47.099707],
+            [-157.449043, 46.969648],
+            [-156.295928, 46.827953],
+            [-155.149122, 46.67474],
+            [-154.00904, 46.510137],
+            [-152.876077, 46.334276],
+            [-151.750605, 46.147299],
+            [-150.632976, 45.949353],
+            [-149.523516, 45.740592],
+            [-148.422533, 45.521174],
+            [-147.330306, 45.291263],
+            [-146.247096, 45.051027],
+            [-145.173137, 44.800639],
+            [-144.108643, 44.540274],
+            [-143.053805, 44.270111],
+            [-142.00879, 43.990331],
+            [-140.973745, 43.701118],
+            [-139.948796, 43.402655],
+            [-138.934047, 43.09513],
+            [-137.929585, 42.778729],
+            [-136.935474, 42.45364],
+            [-135.951764, 42.120051],
+            [-134.978485, 41.778148],
+            [-134.015649, 41.428119],
+            [-133.063256, 41.070149],
+            [-132.121288, 40.704424],
+            [-131.189715, 40.331126],
+            [-130.268491, 39.950439],
+            [-129.35756, 39.562541],
+            [-128.456854, 39.167612],
+            [-127.566293, 38.765827],
+            [-126.685788, 38.357361],
+            [-125.815241, 37.942384],
+            [-124.954544, 37.521066],
+            [-124.103583, 37.093573],
+            [-123.262237, 36.660068],
+            [-122.430376, 36.220712],
+            [-121.607867, 35.775664],
+            [-120.794571, 35.325078],
+            [-119.990344, 34.869106],
+            [-119.195037, 34.407898],
+            [-118.4085, 33.9416]
+          ]
+        ]
+      },
+      "properties": {}
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "name": "Tokyo"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [139.7798, 35.5494]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "name": "Los Angeles"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-118.4085, 33.9416]
+      }
+    }
+  ]
+}
diff --git a/packages/turf-great-circle/test/out/basic.geojson b/packages/turf-great-circle/test/out/basic.geojson
index 0044c05a27..a2bed1eb03 100644
--- a/packages/turf-great-circle/test/out/basic.geojson
+++ b/packages/turf-great-circle/test/out/basic.geojson
@@ -2,6 +2,7 @@
   "type": "FeatureCollection",
   "features": [
     {
+      "type": "Feature",
       "geometry": {
         "type": "LineString",
         "coordinates": [
@@ -107,7 +108,6 @@
           [28.125, 43.325178]
         ]
       },
-      "type": "Feature",
       "properties": {}
     },
     {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 757550c403..b28160fac7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -3045,8 +3045,8 @@ importers:
         specifier: 'catalog:'
         version: 7946.0.14
       arc:
-        specifier: ^0.2.0
-        version: 0.2.0
+        specifier: ^1.0.0
+        version: 1.0.0
       tslib:
         specifier: 'catalog:'
         version: 2.8.1
@@ -7230,6 +7230,7 @@ packages:
   '@lerna/create@9.0.3':
     resolution: {integrity: sha512-hUTEWrR8zH+/Z3bp/R1aLm6DW8vB/BB7KH7Yeg4fMfrvSwxegiLVW9uJFAzWkK4mzEagmj/Dti85Yg9MN13t0g==}
     engines: {node: ^20.19.0 || ^22.12.0 || >=24.0.0}
+    deprecated: This package is an implementation detail of Lerna and is no longer published separately.
 
   '@ljharb/resumer@0.1.3':
     resolution: {integrity: sha512-d+tsDgfkj9X5QTriqM4lKesCkMMJC3IrbPKHvayP00ELx2axdXvDfWkqjxrLXIzGcQzmj7VAUT1wopqARTvafw==}
@@ -8003,9 +8004,9 @@ packages:
   aproba@2.0.0:
     resolution: {integrity: sha512-lYe4Gx7QT+MKGbDsA+Z+he/Wtef0BiwDOlK/XkBrdfsh9J/jPPXbX0tE9x9cl27Tmu5gg3QUbUrQYa/y+KOHPQ==}
 
-  arc@0.2.0:
-    resolution: {integrity: sha512-8NFOo126uYKQJyXNSLY/jSklgfLQL+XWAcPXGo876JwEQ8nSOPXWNI3TV2jLZMN8QEw8uksJ1ZwS4npjBca8MA==}
-    engines: {node: '>=0.4.0'}
+  arc@1.0.0:
+    resolution: {integrity: sha512-Y1czl0GTrN/CAyZczn/kgZZ5EnOHLqLog2kdp/Cw00IDt1aq0UC5zdZQ5EjA0ucaqDc2F2AUs0dss9QUWnSc/w==}
+    engines: {node: '>=18'}
 
   argparse@1.0.10:
     resolution: {integrity: sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==}
@@ -9099,6 +9100,7 @@ packages:
   git-raw-commits@3.0.0:
     resolution: {integrity: sha512-b5OHmZ3vAgGrDn/X0kS+9qCfNKWe4K/jFnhwzVWWg0/k5eLa3060tZShrRg8Dja5kPc+YjS0Gc6y7cRr44Lpjw==}
     engines: {node: '>=14'}
+    deprecated: This package is no longer maintained. For the JavaScript API, please use @conventional-changelog/git-client instead.
     hasBin: true
 
   git-remote-origin-url@2.0.0:
@@ -9108,6 +9110,7 @@ packages:
   git-semver-tags@5.0.1:
     resolution: {integrity: sha512-hIvOeZwRbQ+7YEUmCkHqo8FOLQZCEn18yevLHADlFPZY02KJGsu5FZt9YW/lybfK2uhWFI7Qg/07LekJiTv7iA==}
     engines: {node: '>=14'}
+    deprecated: This package is no longer maintained. For the JavaScript API, please use @conventional-changelog/git-client instead.
     hasBin: true
 
   git-up@7.0.0:
@@ -11306,10 +11309,12 @@ packages:
   tar@6.2.1:
     resolution: {integrity: sha512-DZ4yORTwrbTj/7MZYq2w+/ZFdI6OZ/f9SFHR+71gIVUZhOQPHzVCLpvRnPgyaMpfWxxk/4ONva3GQSyNIKRv6A==}
     engines: {node: '>=10'}
+    deprecated: Old versions of tar are not supported, and contain widely publicized security vulnerabilities, which have been fixed in the current version. Please update. Support for old versions may be purchased (at exorbitant rates) by contacting i@izs.me
 
   tar@7.5.2:
     resolution: {integrity: sha512-7NyxrTE4Anh8km8iEy7o0QYPs+0JKBTj5ZaqHg6B39erLg0qYXN3BijtShwbsNSvQ+LN75+KV+C4QR/f6Gwnpg==}
     engines: {node: '>=18'}
+    deprecated: Old versions of tar are not supported, and contain widely publicized security vulnerabilities, which have been fixed in the current version. Please update. Support for old versions may be purchased (at exorbitant rates) by contacting i@izs.me
 
   temp-dir@1.0.0:
     resolution: {integrity: sha512-xZFXEGbG7SNC3itwBzI3RYjq/cEhBkx2hJuKGIUOcEULmkQExXiHat2z/qkISYsuR+IKumhEfKKbV5qXmhICFQ==}
@@ -13820,7 +13825,7 @@ snapshots:
 
   aproba@2.0.0: {}
 
-  arc@0.2.0: {}
+  arc@1.0.0: {}
 
   argparse@1.0.10:
     dependencies:
diff --git a/tsup.config.ts b/tsup.config.ts
index 283f087732..873a6ab4ee 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -19,6 +19,7 @@ export default [
     ...baseOptions,
     outDir: "dist/cjs",
     format: "cjs",
+    noExternal: ["arc"], // arc is ESM-only; inline for CJS consumers
   }),
   defineConfig({
     ...baseOptions,