diff --git a/package-lock.json b/package-lock.json
index e7859a4..4b1c616 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@rdfc/sds-storage-writer-ts",
-  "version": "1.0.0-alpha.1",
+  "version": "1.0.0-alpha.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@rdfc/sds-storage-writer-ts",
-      "version": "1.0.0-alpha.1",
+      "version": "1.0.0-alpha.2",
       "license": "MIT",
       "dependencies": {
         "@treecg/types": "^0.4.6",
@@ -684,262 +684,6 @@
         "kuler": "^2.0.0"
       }
     },
-    "node_modules/@esbuild/aix-ppc64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.5.tgz",
-      "integrity": "sha512-1SDgH6ZSPTlggy1yI6+Dbkiz8xzpHJEVAlF/AM1tHPLsf5STom9rwtjE4hKAF20FfXXNTFqEYXyJNWh1GiZedQ==",
-      "cpu": [
-        "ppc64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "aix"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/android-arm": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.21.5.tgz",
-      "integrity": "sha512-vCPvzSjpPHEi1siZdlvAlsPxXl7WbOVUBBAowWug4rJHb68Ox8KualB+1ocNvT5fjv6wpkX6o/iEpbDrf68zcg==",
-      "cpu": [
-        "arm"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "android"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/android-arm64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.21.5.tgz",
-      "integrity": "sha512-c0uX9VAUBQ7dTDCjq+wdyGLowMdtR/GoC2U5IYk/7D1H1JYC0qseD7+11iMP2mRLN9RcCMRcjC4YMclCzGwS/A==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "android"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/android-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.21.5.tgz",
-      "integrity": "sha512-D7aPRUUNHRBwHxzxRvp856rjUHRFW1SdQATKXH2hqA0kAZb1hKmi02OpYRacl0TxIGz/ZmXWlbZgjwWYaCakTA==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "android"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/darwin-arm64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.21.5.tgz",
-      "integrity": "sha512-DwqXqZyuk5AiWWf3UfLiRDJ5EDd49zg6O9wclZ7kUMv2WRFr4HKjXp/5t8JZ11QbQfUS6/cRCKGwYhtNAY88kQ==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/darwin-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.21.5.tgz",
-      "integrity": "sha512-se/JjF8NlmKVG4kNIuyWMV/22ZaerB+qaSi5MdrXtd6R08kvs2qCN4C09miupktDitvh8jRFflwGFBQcxZRjbw==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/freebsd-arm64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.21.5.tgz",
-      "integrity": "sha512-5JcRxxRDUJLX8JXp/wcBCy3pENnCgBR9bN6JsY4OmhfUtIHe3ZW0mawA7+RDAcMLrMIZaf03NlQiX9DGyB8h4g==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "freebsd"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/freebsd-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.21.5.tgz",
-      "integrity": "sha512-J95kNBj1zkbMXtHVH29bBriQygMXqoVQOQYA+ISs0/2l3T9/kj42ow2mpqerRBxDJnmkUDCaQT/dfNXWX/ZZCQ==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "freebsd"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-arm": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.21.5.tgz",
-      "integrity": "sha512-bPb5AHZtbeNGjCKVZ9UGqGwo8EUu4cLq68E95A53KlxAPRmUyYv2D6F0uUI65XisGOL1hBP5mTronbgo+0bFcA==",
-      "cpu": [
-        "arm"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-arm64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.21.5.tgz",
-      "integrity": "sha512-ibKvmyYzKsBeX8d8I7MH/TMfWDXBF3db4qM6sy+7re0YXya+K1cem3on9XgdT2EQGMu4hQyZhan7TeQ8XkGp4Q==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-ia32": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.21.5.tgz",
-      "integrity": "sha512-YvjXDqLRqPDl2dvRODYmmhz4rPeVKYvppfGYKSNGdyZkA01046pLWyRKKI3ax8fbJoK5QbxblURkwK/MWY18Tg==",
-      "cpu": [
-        "ia32"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-loong64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.21.5.tgz",
-      "integrity": "sha512-uHf1BmMG8qEvzdrzAqg2SIG/02+4/DHB6a9Kbya0XDvwDEKCoC8ZRWI5JJvNdUjtciBGFQ5PuBlpEOXQj+JQSg==",
-      "cpu": [
-        "loong64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-mips64el": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.21.5.tgz",
-      "integrity": "sha512-IajOmO+KJK23bj52dFSNCMsz1QP1DqM6cwLUv3W1QwyxkyIWecfafnI555fvSGqEKwjMXVLokcV5ygHW5b3Jbg==",
-      "cpu": [
-        "mips64el"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-ppc64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.21.5.tgz",
-      "integrity": "sha512-1hHV/Z4OEfMwpLO8rp7CvlhBDnjsC3CttJXIhBi+5Aj5r+MBvy4egg7wCbe//hSsT+RvDAG7s81tAvpL2XAE4w==",
-      "cpu": [
-        "ppc64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-riscv64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.21.5.tgz",
-      "integrity": "sha512-2HdXDMd9GMgTGrPWnJzP2ALSokE/0O5HhTUvWIbD3YdjME8JwvSCnNGBnTThKGEB91OZhzrJ4qIIxk/SBmyDDA==",
-      "cpu": [
-        "riscv64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/linux-s390x": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.21.5.tgz",
-      "integrity": "sha512-zus5sxzqBJD3eXxwvjN1yQkRepANgxE9lgOW2qLnmr8ikMTphkjgXu1HR01K4FJg8h1kEEDAqDcZQtbrRnB41A==",
-      "cpu": [
-        "s390x"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
     "node_modules/@esbuild/linux-x64": {
       "version": "0.21.5",
       "resolved": "https://registry.npmjs.org/@esbuild/linux-x64/-/linux-x64-0.21.5.tgz",
@@ -956,102 +700,6 @@
         "node": ">=12"
       }
     },
-    "node_modules/@esbuild/netbsd-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/netbsd-x64/-/netbsd-x64-0.21.5.tgz",
-      "integrity": "sha512-Woi2MXzXjMULccIwMnLciyZH4nCIMpWQAs049KEeMvOcNADVxo0UBIQPfSmxB3CWKedngg7sWZdLvLczpe0tLg==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "netbsd"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/openbsd-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/openbsd-x64/-/openbsd-x64-0.21.5.tgz",
-      "integrity": "sha512-HLNNw99xsvx12lFBUwoT8EVCsSvRNDVxNpjZ7bPn947b8gJPzeHWyNVhFsaerc0n3TsbOINvRP2byTZ5LKezow==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "openbsd"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/sunos-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.21.5.tgz",
-      "integrity": "sha512-6+gjmFpfy0BHU5Tpptkuh8+uw3mnrvgs+dSPQXQOv3ekbordwnzTVEb4qnIvQcYXq6gzkyTnoZ9dZG+D4garKg==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "sunos"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/win32-arm64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.21.5.tgz",
-      "integrity": "sha512-Z0gOTd75VvXqyq7nsl93zwahcTROgqvuAcYDUr+vOv8uHhNSKROyU961kgtCD1e95IqPKSQKH7tBTslnS3tA8A==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/win32-ia32": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.21.5.tgz",
-      "integrity": "sha512-SWXFF1CL2RVNMaVs+BBClwtfZSvDgtL//G/smwAc5oVK/UPu2Gu9tIaRgFmYFFKrmg3SyAjSrElf0TiJ1v8fYA==",
-      "cpu": [
-        "ia32"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/win32-x64": {
-      "version": "0.21.5",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.21.5.tgz",
-      "integrity": "sha512-tQd/1efJuzPC6rCFwEvLtci/xNFcTZknmXs98FYDfGE4wP9ClFV98nyKrzJKVPMhdDnjzLhdUyMX4PsQAPjwIw==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
     "node_modules/@eslint-community/eslint-utils": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.4.0.tgz",
@@ -1536,149 +1184,6 @@
         "@types/node": "*"
       }
     },
-    "node_modules/@rollup/rollup-android-arm-eabi": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.21.1.tgz",
-      "integrity": "sha512-2thheikVEuU7ZxFXubPDOtspKn1x0yqaYQwvALVtEcvFhMifPADBrgRPyHV0TF3b+9BgvgjgagVyvA/UqPZHmg==",
-      "cpu": [
-        "arm"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "android"
-      ]
-    },
-    "node_modules/@rollup/rollup-android-arm64": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.21.1.tgz",
-      "integrity": "sha512-t1lLYn4V9WgnIFHXy1d2Di/7gyzBWS8G5pQSXdZqfrdCGTwi1VasRMSS81DTYb+avDs/Zz4A6dzERki5oRYz1g==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "android"
-      ]
-    },
-    "node_modules/@rollup/rollup-darwin-arm64": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.21.1.tgz",
-      "integrity": "sha512-AH/wNWSEEHvs6t4iJ3RANxW5ZCK3fUnmf0gyMxWCesY1AlUj8jY7GC+rQE4wd3gwmZ9XDOpL0kcFnCjtN7FXlA==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "darwin"
-      ]
-    },
-    "node_modules/@rollup/rollup-darwin-x64": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.21.1.tgz",
-      "integrity": "sha512-dO0BIz/+5ZdkLZrVgQrDdW7m2RkrLwYTh2YMFG9IpBtlC1x1NPNSXkfczhZieOlOLEqgXOFH3wYHB7PmBtf+Bg==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "darwin"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-arm-gnueabihf": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.21.1.tgz",
-      "integrity": "sha512-sWWgdQ1fq+XKrlda8PsMCfut8caFwZBmhYeoehJ05FdI0YZXk6ZyUjWLrIgbR/VgiGycrFKMMgp7eJ69HOF2pQ==",
-      "cpu": [
-        "arm"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-arm-musleabihf": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.21.1.tgz",
-      "integrity": "sha512-9OIiSuj5EsYQlmwhmFRA0LRO0dRRjdCVZA3hnmZe1rEwRk11Jy3ECGGq3a7RrVEZ0/pCsYWx8jG3IvcrJ6RCew==",
-      "cpu": [
-        "arm"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-arm64-gnu": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.21.1.tgz",
-      "integrity": "sha512-0kuAkRK4MeIUbzQYu63NrJmfoUVicajoRAL1bpwdYIYRcs57iyIV9NLcuyDyDXE2GiZCL4uhKSYAnyWpjZkWow==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-arm64-musl": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.21.1.tgz",
-      "integrity": "sha512-/6dYC9fZtfEY0vozpc5bx1RP4VrtEOhNQGb0HwvYNwXD1BBbwQ5cKIbUVVU7G2d5WRE90NfB922elN8ASXAJEA==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-powerpc64le-gnu": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-powerpc64le-gnu/-/rollup-linux-powerpc64le-gnu-4.21.1.tgz",
-      "integrity": "sha512-ltUWy+sHeAh3YZ91NUsV4Xg3uBXAlscQe8ZOXRCVAKLsivGuJsrkawYPUEyCV3DYa9urgJugMLn8Z3Z/6CeyRQ==",
-      "cpu": [
-        "ppc64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-riscv64-gnu": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.21.1.tgz",
-      "integrity": "sha512-BggMndzI7Tlv4/abrgLwa/dxNEMn2gC61DCLrTzw8LkpSKel4o+O+gtjbnkevZ18SKkeN3ihRGPuBxjaetWzWg==",
-      "cpu": [
-        "riscv64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
-    "node_modules/@rollup/rollup-linux-s390x-gnu": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.21.1.tgz",
-      "integrity": "sha512-z/9rtlGd/OMv+gb1mNSjElasMf9yXusAxnRDrBaYB+eS1shFm6/4/xDH1SAISO5729fFKUkJ88TkGPRUh8WSAA==",
-      "cpu": [
-        "s390x"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "linux"
-      ]
-    },
     "node_modules/@rollup/rollup-linux-x64-gnu": {
       "version": "4.21.1",
       "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.21.1.tgz",
@@ -1705,45 +1210,6 @@
         "linux"
       ]
     },
-    "node_modules/@rollup/rollup-win32-arm64-msvc": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.21.1.tgz",
-      "integrity": "sha512-3Q3brDgA86gHXWHklrwdREKIrIbxC0ZgU8lwpj0eEKGBQH+31uPqr0P2v11pn0tSIxHvcdOWxa4j+YvLNx1i6g==",
-      "cpu": [
-        "arm64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "win32"
-      ]
-    },
-    "node_modules/@rollup/rollup-win32-ia32-msvc": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.21.1.tgz",
-      "integrity": "sha512-tNg+jJcKR3Uwe4L0/wY3Ro0H+u3nrb04+tcq1GSYzBEmKLeOQF2emk1whxlzNqb6MMrQ2JOcQEpuuiPLyRcSIw==",
-      "cpu": [
-        "ia32"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "win32"
-      ]
-    },
-    "node_modules/@rollup/rollup-win32-x64-msvc": {
-      "version": "4.21.1",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.21.1.tgz",
-      "integrity": "sha512-xGiIH95H1zU7naUyTKEyOA/I0aexNMUdO9qRv0bLKN3qu25bBdrxZHqA3PTJ24YNN/GdMzG4xkDcd/GvjuhfLg==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "MIT",
-      "optional": true,
-      "os": [
-        "win32"
-      ]
-    },
     "node_modules/@sinclair/typebox": {
       "version": "0.27.8",
       "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.8.tgz",
@@ -3653,19 +3119,6 @@
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
       "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw=="
     },
-    "node_modules/fsevents": {
-      "version": "2.3.3",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
-      "integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
-      "hasInstallScript": true,
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "engines": {
-        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
-      }
-    },
     "node_modules/function-bind": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
diff --git a/package.json b/package.json
index aacb95a..4eea43b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,8 @@
 {
   "name": "@rdfc/sds-storage-writer-ts",
-  "version": "1.0.0-alpha.1",
+  "version": "1.0.0-alpha.2",
   "description": "An RDF-Connect processor to write SDS streams into a given storage system",
+  "type": "module",
   "main": "lib/index.js",
   "scripts": {
     "build": "tspc && tsc-alias",
diff --git a/src/index.ts b/src/index.ts
index 9cd34ae..041b2de 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -75,21 +75,6 @@ export type DataRecord = {
     data: string;
 };
 
-type Relation = {
-    type: RelationType;
-    value?: string;
-    bucket: string;
-    path?: string;
-};
-
-type Bucket = {
-    id: string;
-    root: boolean;
-    stream: string;
-    relations: Relation[];
-    immutable?: boolean;
-};
-
 export type DBConfig = {
     url: string;
     metadata: string;
@@ -97,34 +82,6 @@ export type DBConfig = {
     index: string;
 };
 
-function emptyBuckets(
-    data: RDF.Quad[],
-    operations: AnyBulkWriteOperation<TREEFragment>[],
-) {
-    const bucketsToEmpty = data
-        .filter(
-            (q) =>
-                q.predicate.equals(SDS.terms.custom("empty")) &&
-                q.object.value === "true" &&
-                q.graph.equals(SDS.terms.custom("DataDescription")),
-        )
-        .map((q) => q.subject);
-
-    // Only perform the operation if there are buckets to empty.
-    if (bucketsToEmpty.length === 0) {
-        return;
-    }
-
-    operations.push({
-        updateMany: {
-            filter: { id: { $in: bucketsToEmpty.map((b) => b.value) } },
-            update: {
-                $set: { members: [] },
-            },
-            upsert: true,
-        },
-    });
-}
 const lock = new Lock();
 async function handleRecords(
     extract: Extract,
@@ -415,6 +372,9 @@ export async function ingest(
             logger.error("Cannot handle data, mongo is closed");
             return;
         }
+        logger.debug(
+            `Handling ingest for '${data.find((q) => q.predicate.equals(SDS.terms.payload))?.object?.value}'`,
+        );
 
         const extract = extractor.extract_quads(data);
         const indexOperations: AnyBulkWriteOperation<TREEFragment>[] = [];