diff --git a/packages/arcs/tests/.eslintrc.yml b/packages/arcs/tests/.eslintrc.yml
new file mode 100644
index 0000000000..2f8de9aea2
--- /dev/null
+++ b/packages/arcs/tests/.eslintrc.yml
@@ -0,0 +1,2 @@
+env:
+  jest: true
diff --git a/packages/arcs/tests/boundingBox.test.ts b/packages/arcs/tests/boundingBox.test.ts
new file mode 100644
index 0000000000..821e0f108c
--- /dev/null
+++ b/packages/arcs/tests/boundingBox.test.ts
@@ -0,0 +1,52 @@
+import { computeArcBoundingBox } from '../src/boundingBox'
+
+const boundingBoxCases = [
+    {
+        args: [0, 0, 100, 0, 360],
+        expected: {
+            x: -100,
+            y: -100,
+            width: 200,
+            height: 200,
+        },
+    },
+    {
+        args: [0, 0, 100, 0, 90],
+        expected: {
+            x: 0,
+            y: 0,
+            width: 100,
+            height: 100,
+        },
+    },
+    {
+        args: [0, 0, 100, -90, 0],
+        expected: {
+            x: 0,
+            y: -100,
+            width: 100,
+            height: 100,
+        },
+    },
+    {
+        args: [0, 0, 100, 90, 180],
+        expected: {
+            x: -100,
+            y: 0,
+            width: 100,
+            height: 100,
+        },
+    },
+]
+
+for (const boundingBoxCase of boundingBoxCases) {
+    const { args, expected } = boundingBoxCase
+
+    test(`computeArcBoundingBox() for position ${args[0]}, ${args[1]} with radius ${args[2]}, starting at ${args[3]}°, ending at ${args[4]}°`, () => {
+        const box = computeArcBoundingBox(...args)
+
+        for (const prop in expected) {
+            expect(box).toHaveProperty(prop, expected[prop])
+        }
+    })
+}
diff --git a/packages/core/tests/lib/polar/utils.test.js b/packages/core/tests/lib/polar/utils.test.js
index fd20604fdf..654fc97a92 100644
--- a/packages/core/tests/lib/polar/utils.test.js
+++ b/packages/core/tests/lib/polar/utils.test.js
@@ -1,68 +1,9 @@
-/*
- * This file is part of the nivo project.
- *
- * Copyright 2016-present, Raphaël Benitte.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-import { absoluteAngleDegrees, midAngle, computeArcBoundingBox } from '../../../src/lib/polar/utils'
+import { absoluteAngleDegrees, midAngle } from '../../../src/lib/polar/utils'
 
 test('midAngle() should compute center of given angles', () => {
     expect(midAngle({ startAngle: 0, endAngle: 90 })).toBe(45)
 })
 
-const boundingBoxCases = [
-    {
-        args: [0, 0, 100, 0, 360],
-        expected: {
-            x: -100,
-            y: -100,
-            width: 200,
-            height: 200,
-        },
-    },
-    {
-        args: [0, 0, 100, 0, 90],
-        expected: {
-            x: 0,
-            y: 0,
-            width: 100,
-            height: 100,
-        },
-    },
-    {
-        args: [0, 0, 100, -90, 0],
-        expected: {
-            x: 0,
-            y: -100,
-            width: 100,
-            height: 100,
-        },
-    },
-    {
-        args: [0, 0, 100, 90, 180],
-        expected: {
-            x: -100,
-            y: 0,
-            width: 100,
-            height: 100,
-        },
-    },
-]
-
-for (let boundingBoxCase of boundingBoxCases) {
-    const { args, expected } = boundingBoxCase
-
-    test(`computeArcBoundingBox() for position ${args[0]}, ${args[1]} with radius ${args[2]}, starting at ${args[3]}°, ending at ${args[4]}°`, () => {
-        const box = computeArcBoundingBox(...args)
-
-        for (let prop in expected) {
-            expect(box).toHaveProperty(prop, expected[prop])
-        }
-    })
-}
-
 const absAngleDegUseCases = [
     {
         input: 0,