I am experiencing an issue with debugging TypeScript files in Chrome and Firefox. Specifically, when trying to debug the MapModuleTest.ts file, the debugger seems to be out of sync with the actual JavaScript code by two lines. This discrepancy makes setting breakpoints and tracking variable values confusing.
Is this a known bug related to UMD generation for .map files?
The debugger window further complicates the situation as the local variables displayed do not match what is logged to the console.
https://i.sstatic.net/C1DpW.jpg
Here are the corresponding JS and Map files:
MapTest.js
var Test;
(function (Test) {
function myTest() {
var zero = 0;
var two = zero + 2;
var four = two + two;
var six = four + two;
console.log(six);
}
Test.myTest = myTest;
})(Test || (Test = {}));
//# sourceMappingURL=MapTest.js.map
MapTest.js.map
{"version":3,"file":"MapTest.js","sourceRoot":"","sources":["MapTest.ts"],"names":[],"mappings":"AAAA,IAAO,IAAI,CASV;AATD,WAAO,IAAI;IAEV;QACC,IAAM,IAAI,GAAG,CAAC,CAAC;QACf,IAAM,GAAG,GAAG,IAAI,GAAG,CAAC,CAAC;QACrB,IAAM,IAAI,GAAG,GAAG,GAAG,GAAG,CAAC;QACvB,IAAM,GAAG,GAAG,IAAI,GAAG,GAAG,CAAC;QACvB,OAAO,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC;IAClB,CAAC;IANe,WAAM,SAMrB,CAAA;AACF,CAAC,EATM,IAAI,KAAJ,IAAI,QASV"}
MapModuleTest.js
(function (factory) {
if (typeof module === "object" && typeof module.exports === "object") {
var v = factory(require, exports);
if (v !== undefined) module.exports = v;
}
else if (typeof define === "function" && define.amd) {
define(["require", "exports"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var Test;
(function (Test) {
function myTest() {
var zero = 0;
var two = zero + 2;
var four = two + two;
var six = four + two;
console.log(six);
}
Test.myTest = myTest;
})(Test = exports.Test || (exports.Test = {}));
});
//# sourceMappingURL=MapModuleTest.js.map
MapModuleTest.js.map
{"version":3,"file":"MapModuleTest.js","sourceRoot":"","sources":["MapModuleTest.ts"],"names":[],"mappings":";;;;;;;;;;;IAAA,IAAc,IAAI,CASjB;IATD,WAAc,IAAI;QAEjB;YACC,IAAM,IAAI,GAAG,CAAC,CAAC;YACf,IAAM,GAAG,GAAG,IAAI,GAAG,CAAC,CAAC;YACrB,IAAM,IAAI,GAAG,GAAG,GAAG,GAAG,CAAC;YACvB,IAAM,GAAG,GAAG,IAAI,GAAG,GAAG,CAAC;YACvB,OAAO,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC;QAClB,CAAC;QANe,WAAM,SAMrB,CAAA;IACF,CAAC,EATa,IAAI,GAAJ,YAAI,KAAJ,YAAI,QASjB"}