Refactor source map position assertions. (#362)
Refactor source map position assertions. (#362)

Put the assertions about the source position next to the determination of the compiled position for better readability.
ncfxy/tsickle,lucidsoftware/tsickle,angular/tsickle,drjanitor/tsickle,drjanitor/tsickle,angular/tsickle,ncfxy/tsickle,drjanitor/tsickle,alexeagle/tsickle,ncfxy/tsickle,alexeagle/tsickle,lucidsoftware/tsickle,drjanitor/tsickle,lucidsoftware/tsickle,alexeagle/tsickle