lib/transforms/bundleSystemJs.js
function subtractModules(modulesA, modulesB) {
    const subtracted = [];
    for (const module of modulesA) {
      if (!modulesB.includes(module)) {
        subtracted.push(module);
      }
    }
    return subtracted;
  }
function subtractModules(modulesA, modulesB) {
    const subtracted = [];
    for (const module of modulesA) {
      if (!modulesB.includes(module)) {
        subtracted.push(module);
      }
    }
    return subtracted;
  }
function subtractModules ( modulesA , modulesB ) { const subtracted = [ ] ; for ( const module of modulesA ) { if ( ! modulesB . includes ( module ) ) { subtracted . push ( module ) ; } } return subtracted ; }
remove elements of arrayB from arrayA
remove elements of arrayB from arrayA