As part of investigating #2424 it was found that the source map files are not including the original *.ts files, but rather the rewritten *.js files from the build which have at least (there may be another one) been rewritten by the updateDistEsm script to replace the tslib references with the shims (to support IE)
As part of investigating #2424 it was found that the source map files are not including the original *.ts files, but rather the rewritten *.js files from the build which have at least (there may be another one) been rewritten by the
updateDistEsmscript to replace thetslibreferences with theshims(to support IE)