chore: import upstream snapshot with attribution

2026-07-13 12:23:53 +08:00
commit b3a7f98e5a
3020 changed files with 935484 additions and 0 deletions
@@ -0,0 +1,15 @@
+import { describe, expect, it } from "vitest";
+
+import { sha256Multihash } from "../src/multihash.js";
+
+describe("sha256Multihash", () => {
+	it("matches an independently-verified vector for sha2-256('hello world')", () => {
+		// Cross-checked against the multiformats reference encoding:
+		//   sha256("hello world")     = b94d27b9...e2efcde9
+		//   multihash bytes           = 0x12 0x20 || digest
+		//   multibase('b' = base32)   = bciqlstjhxgju2pqiuuxffv62pwv7vree57rxuu4a52iir55m4lx432i
+		// If this drifts, the multibase prefix or the base32 alphabet changed.
+		const out = sha256Multihash(new TextEncoder().encode("hello world"));
+		expect(out).toBe("bciqlstjhxgju2pqiuuxffv62pwv7vree57rxuu4a52iir55m4lx432i");
+	});
+});