import { describe, it } from "node:test"; import assert from "node:assert/strict"; import { CLAUDE_CODE_CLIENT_BILLING_VERSION } from "../../src/shared/constants/claudeCodeClient.ts"; describe("Anthropic billing header fingerprint (#1638)", () => { it("uses the immutable build revision captured from the signed CLI", () => { assert.equal(CLAUDE_CODE_CLIENT_BILLING_VERSION, "2.1.220.1f2"); }); });