chore: vitest iterable equality temporary workaround

packages/effect/test/Either.test.ts

@@ -364,4 +364,13 @@ describe("Either", () => {
       Either.left("d")
     )
   })
+
+  it("vitest equality", () => {
+    expect(Either.right(2)).not.toStrictEqual(Either.right(1))
+    expect(Either.right(1)).toStrictEqual(Either.right(1))
+    expect(Either.left(2)).not.toStrictEqual(Either.left(1))
+    expect(Either.left(1)).toStrictEqual(Either.left(1))
+    expect(Either.left(1)).not.toStrictEqual(Either.right(1))
+    expect(Either.left(1)).not.toStrictEqual(Either.right(2))
+  })
 })

packages/effect/test/Option.test.ts

@@ -496,4 +496,11 @@ describe("Option", () => {
     expect(f(_.none(), _.some(2))).toStrictEqual(_.none())
     expect(f(_.some(1), _.some(2))).toStrictEqual(_.some(3))
   })
+
+  it("vitest equality", () => {
+    expect(_.some(2)).not.toStrictEqual(_.some(1))
+    expect(_.none()).not.toStrictEqual(_.some(1))
+    expect(_.some(2)).toStrictEqual(_.some(2))
+    expect(_.none()).toStrictEqual(_.none())
+  })
 })

setupTests.ts

@@ -0,0 +1,32 @@
+import { equals } from "@vitest/expect"
+
+// workaround for https://github.com/vitest-dev/vitest/issues/5620
+
+const testers = (globalThis as any)[Symbol.for("$$jest-matchers-object")]
+  .customEqualityTesters
+
+function hasIterator(object: any) {
+  return !!(object !== null && object[Symbol.iterator])
+}
+
+testers.unshift((a: unknown, b: unknown) => {
+  if (
+    typeof a !== "object" ||
+    typeof b !== "object" ||
+    Array.isArray(a) ||
+    Array.isArray(b) ||
+    !hasIterator(a) ||
+    !hasIterator(b) ||
+    a === null ||
+    b === null
+  ) {
+    return undefined
+  }
+
+  const aEntries = Object.entries(a)
+  const bEntries = Object.entries(b)
+
+  if (!equals(aEntries, bEntries)) return false
+
+  return undefined
+})

vitest.shared.ts

@@ -15,6 +15,7 @@ const config: UserConfig = {
     exclude: ["bun:sqlite"]
   },
   test: {
+    setupFiles: [path.join(__dirname, "setupTests.ts")],
     fakeTimers: {
       toFake: undefined
     },