71 lines
1.8 KiB
JavaScript
71 lines
1.8 KiB
JavaScript
"use strict";
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// CLEAR DEBUGGING FLAGS //
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// line occupancy in built js source
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let debug_source_line_occupancy = {};
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// EMPTY ERROR BUFFER FOR TIME UNTIL HTML IS AVAILABLE //
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let javascript_error_buffer = [];
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function debug_javascript_error_message(error_event){
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// TRANSLATE TO SOURCE FILE'S LINES //
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// find source file occupying this line
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let source_file = null;
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let source_line = 0;
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for(var one_source_file in debug_source_line_occupancy){
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let occupancy = debug_source_line_occupancy[one_source_file];
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if(error_event.lineno >= occupancy.start && (occupancy.end === undefined || error_event.lineno <= occupancy.end)){
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// remember source file name
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source_file = one_source_file;
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// translate compiled line to source file line
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source_line = error_event.lineno - debug_source_line_occupancy[source_file].start + 1;
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// stop searching
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break;
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}
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}
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// OUTPUT MESSAGE //
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// build line info
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let line_info_string;
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if(source_file !== null){
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line_info_string = source_file + " line " + source_line;
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} else {
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line_info_string = "raw source" + " line " + error_event.lineno;
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}
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// send to callback
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my_error_callback("(" + line_info_string + ") " + error_event.message, "javascript");
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}
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// EMPTY ERROR BUFFER WHEN HTML IS AVAILABLE //
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document.addEventListener("DOMContentLoaded", function(){
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// print messages
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for(var one_error_event of javascript_error_buffer){
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debug_javascript_error_message(one_error_event);
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}
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// disable buffer
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javascript_error_buffer = null;
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});
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window.addEventListener("error", function(error_event){
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// OUTPUT //
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if(javascript_error_buffer !== null){
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// add to buffer
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javascript_error_buffer.push(error_event);
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} else {
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// output directly
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debug_javascript_error_message(error_event);
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}
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// DON'T CANCEL EVENT //
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return false;
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});
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