import { expect, test } from "bun:test";
// https://github.com/oven-sh/bun/issues/19219
test("HTMLRewriter should throw proper errors instead of [native code: Exception]", () => {
const rewriter = new HTMLRewriter().on("p", {
element(element) {
// This will cause an error by trying to call a non-existent method
(element as any).nonExistentMethod();
},
});
const html = "Hello
";
// Should throw a proper TypeError, not [native code: Exception]
expect(() => {
rewriter.transform(html);
}).toThrow(TypeError);
// Verify the error message is descriptive
try {
rewriter.transform(html);
} catch (error: any) {
expect(error).toBeInstanceOf(TypeError);
expect(error.message).toContain("nonExistentMethod");
expect(error.message).toContain("is not a function");
// Make sure it's not the generic [native code: Exception] message
expect(error.toString()).not.toContain("[native code: Exception]");
}
});
test("HTMLRewriter should propagate errors from handlers correctly", () => {
const rewriter = new HTMLRewriter().on("div", {
element() {
throw new Error("Custom error from handler");
},
});
const html = "test
";
expect(() => {
rewriter.transform(html);
}).toThrow("Custom error from handler");
});
test("HTMLRewriter should handle errors in async handlers", async () => {
const rewriter = new HTMLRewriter().on("div", {
async element() {
throw new Error("Async handler error");
},
});
const html = "test
";
const response = new Response(html);
expect(() => {
rewriter.transform(response);
}).toThrow("Async handler error");
});