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Log unhandled promise rejection

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This commit is contained in:
Karl Seguin
2025-09-02 18:19:28 +08:00
parent 8d4d72bf15
commit d7e7832e9f
2 changed files with 17 additions and 2 deletions
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15
src/runtime/js.zig
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@@ -197,6 +197,7 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
// This is the callback that runs whenever a module is dynamically imported.
isolate.setHostImportModuleDynamicallyCallback(JsContext.dynamicModuleCallback);
isolate.setPromiseRejectCallback(promiseRejectCallback);
isolate.enter();
errdefer isolate.exit();
@@ -328,6 +329,20 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
self.isolate.lowMemoryNotification();
}
fn promiseRejectCallback(v8_msg: v8.C_PromiseRejectMessage) callconv(.c) void {
const msg = v8.PromiseRejectMessage.initFromC(v8_msg);
const isolate = msg.getPromise().toObject().getIsolate();
const v8_context = isolate.getCurrentContext();
const context: *JsContext = @ptrFromInt(v8_context.getEmbedderData(1).castTo(v8.BigInt).getUint64());
const value =
if (msg.getValue()) |v8_value| valueToString(context.call_arena, v8_value, isolate, v8_context) catch |err| @errorName(err)
else "no value";
log.debug(.js, "unhandled rejection", .{.value =value});
}
// ExecutionWorld closely models a JS World.
// https://chromium.googlesource.com/chromium/src/+/master/third_party/blink/renderer/bindings/core/v8/V8BindingDesign.md#World
// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/scripting/ExecutionWorld