11// PyScript Error Plugin
2+ import { buffered } from "polyscript/exports" ;
23import { hooks } from "../core.js" ;
34
5+ let dontBotherDOM = false ;
6+ export function notOnDOM ( ) {
7+ dontBotherDOM = true ;
8+ }
9+
410hooks . main . onReady . add ( function override ( pyScript ) {
511 // be sure this override happens only once
612 hooks . main . onReady . delete ( override ) ;
713
814 // trap generic `stderr` to propagate to it regardless
915 const { stderr } = pyScript . io ;
1016
11- // override it with our own logic
12- pyScript . io . stderr = ( error , ...rest ) => {
17+ const cb = ( error , ...rest ) => {
1318 notify ( error . message || error ) ;
1419 // let other plugins or stderr hook, if any, do the rest
1520 return stderr ( error , ...rest ) ;
1621 } ;
1722
23+ // override it with our own logic
24+ pyScript . io . stderr = pyScript . type === "py" ? cb : buffered ( cb ) ;
25+
1826 // be sure uncaught Python errors are also visible
1927 addEventListener ( "error" , ( { message } ) => {
2028 if ( message . startsWith ( "Uncaught PythonError" ) ) notify ( message ) ;
@@ -30,6 +38,7 @@ hooks.main.onReady.add(function override(pyScript) {
3038 * @param {string } message
3139 */
3240export function notify ( message ) {
41+ if ( dontBotherDOM ) return ;
3342 const div = document . createElement ( "div" ) ;
3443 div . className = "py-error" ;
3544 div . textContent = message ;
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