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https://github.com/oven-sh/bun
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a0f13ea5bb
## Summary - Fixed HTMLRewriter to throw proper errors instead of `[native code: Exception]` - The issue was incorrect error handling in the `transform_` function - it wasn't properly checking for errors from `beginTransform()` - Added proper error checking using `toError()` method on JSValue to normalize Exception and Error instances ## Test plan - Added regression test in `test/regression/issue/19219.test.ts` - Test verifies that HTMLRewriter throws proper TypeError with descriptive message when handlers throw - All existing HTMLRewriter tests continue to pass Fixes #19219 🤖 Generated with [Claude Code](https://claude.ai/code) --------- Co-authored-by: Claude Bot <claude-bot@bun.sh> Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
import { expect, test } from "bun:test";
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// https://github.com/oven-sh/bun/issues/19219
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test("HTMLRewriter should throw proper errors instead of [native code: Exception]", () => {
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const rewriter = new HTMLRewriter().on("p", {
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element(element) {
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// This will cause an error by trying to call a non-existent method
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(element as any).nonExistentMethod();
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},
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});
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const html = "<html><body><p>Hello</p></body></html>";
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// Should throw a proper TypeError, not [native code: Exception]
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expect(() => {
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rewriter.transform(html);
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}).toThrow(TypeError);
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// Verify the error message is descriptive
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try {
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rewriter.transform(html);
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} catch (error: any) {
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expect(error).toBeInstanceOf(TypeError);
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expect(error.message).toContain("nonExistentMethod");
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expect(error.message).toContain("is not a function");
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// Make sure it's not the generic [native code: Exception] message
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expect(error.toString()).not.toContain("[native code: Exception]");
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}
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});
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test("HTMLRewriter should propagate errors from handlers correctly", () => {
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const rewriter = new HTMLRewriter().on("div", {
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element() {
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throw new Error("Custom error from handler");
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},
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});
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const html = "<div>test</div>";
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expect(() => {
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rewriter.transform(html);
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}).toThrow("Custom error from handler");
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});
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test("HTMLRewriter should handle errors in async handlers", async () => {
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const rewriter = new HTMLRewriter().on("div", {
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async element() {
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throw new Error("Async handler error");
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},
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});
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const html = "<div>test</div>";
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const response = new Response(html);
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expect(() => {
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rewriter.transform(response);
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}).toThrow("Async handler error");
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});
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