/**
 * Verify tree-shaking readiness:
 * - sideEffects: false is set in package.json
 * - At least 5 named subpath exports are declared
 */
import { readFileSync } from "node:fs";
import { join } from "node:path";
import { describe, expect, it } from "@suaveplan/testing/runner";

const PKG_ROOT = join(import.meta.dirname, "..");
const pkg = JSON.parse(
    readFileSync(join(PKG_ROOT, "package.json"), "utf-8")
) as {
    sideEffects: boolean | string[];
    exports: Record<string, unknown>;
};

describe("tree-shake", () => {
    it("sideEffects is false", { timeout: 5000 }, () => {
        expect(pkg.sideEffects).toBe(false);
    });

    it("has at least 5 subpath exports (excluding package.json)", {
        timeout: 5000,
    }, () => {
        const subpaths = Object.keys(pkg.exports).filter(
            (k) => k !== "./package.json"
        );
        expect(subpaths.length).toBeGreaterThanOrEqual(5);
    });

    it("root export '.' is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["."]).toBeDefined();
    });

    it("cursor subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./cursor"]).toBeDefined();
    });

    it("offset subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./offset"]).toBeDefined();
    });

    it("keyset subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./keyset"]).toBeDefined();
    });

    it("adapters subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./adapters"]).toBeDefined();
    });

    it("helpers subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./helpers"]).toBeDefined();
    });

    it("errors subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./errors"]).toBeDefined();
    });

    it("schemas subpath export is declared", { timeout: 5000 }, () => {
        expect(pkg.exports["./schemas"]).toBeDefined();
    });
});