wip: migrate to bun

test/isSymbol.spec.ts

@@ -0,0 +1,40 @@
+import assert from 'node:assert';
+import lodashStable from 'lodash';
+import { symbol, falsey, stubFalse, args, slice, realm } from './utils';
+import isSymbol from '../src/isSymbol';
+
+describe('isSymbol', () => {
+    it('should return `true` for symbols', () => {
+        if (Symbol) {
+            assert.strictEqual(isSymbol(symbol), true);
+            assert.strictEqual(isSymbol(Object(symbol)), true);
+        }
+    });
+
+    it('should return `false` for non-symbols', () => {
+        const expected = lodashStable.map(falsey, stubFalse);
+
+        const actual = lodashStable.map(falsey, (value, index) =>
+            index ? isSymbol(value) : isSymbol(),
+        );
+
+        assert.deepStrictEqual(actual, expected);
+
+        assert.strictEqual(isSymbol(args), false);
+        assert.strictEqual(isSymbol([1, 2, 3]), false);
+        assert.strictEqual(isSymbol(true), false);
+        assert.strictEqual(isSymbol(new Date()), false);
+        assert.strictEqual(isSymbol(new Error()), false);
+        assert.strictEqual(isSymbol(slice), false);
+        assert.strictEqual(isSymbol({ '0': 1, length: 1 }), false);
+        assert.strictEqual(isSymbol(1), false);
+        assert.strictEqual(isSymbol(/x/), false);
+        assert.strictEqual(isSymbol('a'), false);
+    });
+
+    it('should work with symbols from another realm', () => {
+        if (Symbol && realm.symbol) {
+            assert.strictEqual(isSymbol(realm.symbol), true);
+        }
+    });
+});