basis.utils.source: more robust sourceMap fetch for large sources
basis.utils.source: more robust sourceMap fetch for large sources

basisjs/basisjs,fateevv/basisjs,smelukov/basisjs,fateevv/basisjs,tyanas/basisjs,smelukov/basisjs,istrel/basisjs,istrel/basisjs,tyanas/basisjs,smelukov/basisjs,basisjs/basisjs,tyanas/basisjs,basisjs/basisjs,istrel/basisjs,fateevv/basisjs