diff --git a/.babelrc b/.babelrc
index 1e886fcd9..453c2e5d9 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,6 +1,7 @@
 {
-  presets: [
-    ["@babel/env"],
+  "presets": [
+    "@babel/preset-env",
+    "@babel/preset-typescript",
   ],
   "plugins": [
     "@babel/plugin-transform-runtime"
diff --git a/package-lock.json b/package-lock.json
index af3744ff3..5470df2f6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -124,6 +124,20 @@
         "@babel/types": "^7.4.4"
       }
     },
+    "@babel/helper-create-class-features-plugin": {
+      "version": "7.6.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.6.0.tgz",
+      "integrity": "sha512-O1QWBko4fzGju6VoVvrZg0RROCVifcLxiApnGP3OWfWzvxRZFCoBD81K5ur5e3bVY2Vf/5rIJm8cqPKn8HUJng==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-function-name": "^7.1.0",
+        "@babel/helper-member-expression-to-functions": "^7.5.5",
+        "@babel/helper-optimise-call-expression": "^7.0.0",
+        "@babel/helper-plugin-utils": "^7.0.0",
+        "@babel/helper-replace-supers": "^7.5.5",
+        "@babel/helper-split-export-declaration": "^7.4.4"
+      }
+    },
     "@babel/helper-define-map": {
       "version": "7.5.5",
       "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.5.5.tgz",
@@ -421,6 +435,15 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
+    "@babel/plugin-syntax-typescript": {
+      "version": "7.3.3",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.3.3.tgz",
+      "integrity": "sha512-dGwbSMA1YhVS8+31CnPR7LB4pcbrzcV99wQzby4uAfrkZPYZlQ7ImwdpzLqi6Z6IL02b8IAL379CaMwo0x5Lag==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-plugin-utils": "^7.0.0"
+      }
+    },
     "@babel/plugin-transform-arrow-functions": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-arrow-functions/-/plugin-transform-arrow-functions-7.2.0.tgz",
@@ -730,6 +753,17 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
+    "@babel/plugin-transform-typescript": {
+      "version": "7.6.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-typescript/-/plugin-transform-typescript-7.6.0.tgz",
+      "integrity": "sha512-yzw7EopOOr6saONZ3KA3lpizKnWRTe+rfBqg4AmQbSow7ik7fqmzrfIqt053osLwLE2AaTqGinLM2tl6+M/uog==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-create-class-features-plugin": "^7.6.0",
+        "@babel/helper-plugin-utils": "^7.0.0",
+        "@babel/plugin-syntax-typescript": "^7.2.0"
+      }
+    },
     "@babel/plugin-transform-unicode-regex": {
       "version": "7.4.4",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-unicode-regex/-/plugin-transform-unicode-regex-7.4.4.tgz",
@@ -799,6 +833,16 @@
         "semver": "^5.5.0"
       }
     },
+    "@babel/preset-typescript": {
+      "version": "7.6.0",
+      "resolved": "https://registry.npmjs.org/@babel/preset-typescript/-/preset-typescript-7.6.0.tgz",
+      "integrity": "sha512-4xKw3tTcCm0qApyT6PqM9qniseCE79xGHiUnNdKGdxNsGUc2X7WwZybqIpnTmoukg3nhPceI5KPNzNqLNeIJww==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-plugin-utils": "^7.0.0",
+        "@babel/plugin-transform-typescript": "^7.6.0"
+      }
+    },
     "@babel/register": {
       "version": "7.5.5",
       "resolved": "https://registry.npmjs.org/@babel/register/-/register-7.5.5.tgz",
@@ -985,12 +1029,58 @@
         "text-encoding": "^0.6.1"
       }
     },
+    "@types/body-parser": {
+      "version": "1.17.1",
+      "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.17.1.tgz",
+      "integrity": "sha512-RoX2EZjMiFMjZh9lmYrwgoP9RTpAjSHiJxdp4oidAQVO02T7HER3xj9UKue5534ULWeqVEkujhWcyvUce+d68w==",
+      "dev": true,
+      "requires": {
+        "@types/connect": "*",
+        "@types/node": "*"
+      }
+    },
+    "@types/chai": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.3.tgz",
+      "integrity": "sha512-VRw2xEGbll3ZiTQ4J02/hUjNqZoue1bMhoo2dgM2LXjDdyaq4q80HgBDHwpI0/VKlo4Eg+BavyQMv/NYgTetzA==",
+      "dev": true
+    },
+    "@types/connect": {
+      "version": "3.4.32",
+      "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.32.tgz",
+      "integrity": "sha512-4r8qa0quOvh7lGD0pre62CAb1oni1OO6ecJLGCezTmhQ8Fz50Arx9RUszryR8KlgK6avuSXvviL6yWyViQABOg==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/events": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/@types/events/-/events-3.0.0.tgz",
       "integrity": "sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==",
       "dev": true
     },
+    "@types/express": {
+      "version": "4.17.1",
+      "resolved": "https://registry.npmjs.org/@types/express/-/express-4.17.1.tgz",
+      "integrity": "sha512-VfH/XCP0QbQk5B5puLqTLEeFgR8lfCJHZJKkInZ9mkYd+u8byX0kztXEQxEk4wZXJs8HI+7km2ALXjn4YKcX9w==",
+      "dev": true,
+      "requires": {
+        "@types/body-parser": "*",
+        "@types/express-serve-static-core": "*",
+        "@types/serve-static": "*"
+      }
+    },
+    "@types/express-serve-static-core": {
+      "version": "4.16.9",
+      "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-4.16.9.tgz",
+      "integrity": "sha512-GqpaVWR0DM8FnRUJYKlWgyARoBUAVfRIeVDZQKOttLFp5SmhhF9YFIYeTPwMd/AXfxlP7xVO2dj1fGu0Q+krKQ==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*",
+        "@types/range-parser": "*"
+      }
+    },
     "@types/glob": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/@types/glob/-/glob-7.1.1.tgz",
@@ -1002,6 +1092,12 @@
         "@types/node": "*"
       }
     },
+    "@types/mime": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/@types/mime/-/mime-2.0.1.tgz",
+      "integrity": "sha512-FwI9gX75FgVBJ7ywgnq/P7tw+/o1GUbtP0KzbtusLigAOgIgNISRK0ZPl4qertvXSIE8YbsVJueQ90cDt9YYyw==",
+      "dev": true
+    },
     "@types/minimatch": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",
@@ -1014,6 +1110,22 @@
       "integrity": "sha512-dyYO+f6ihZEtNPDcWNR1fkoTDf3zAK3lAABDze3mz6POyIercH0lEUawUFXlG8xaQZmm1yEBON/4TsYv/laDYg==",
       "dev": true
     },
+    "@types/range-parser": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@types/range-parser/-/range-parser-1.2.3.tgz",
+      "integrity": "sha512-ewFXqrQHlFsgc09MK5jP5iR7vumV/BYayNC6PgJO2LPe8vrnNFyjQjSppfEngITi0qvfKtzFvgKymGheFM9UOA==",
+      "dev": true
+    },
+    "@types/serve-static": {
+      "version": "1.13.3",
+      "resolved": "https://registry.npmjs.org/@types/serve-static/-/serve-static-1.13.3.tgz",
+      "integrity": "sha512-oprSwp094zOglVrXdlo/4bAHtKTAxX6VT8FOZlBKrmyLbNvE1zxZyJ6yikMVtHIvwP45+ZQGJn+FdXGKTozq0g==",
+      "dev": true,
+      "requires": {
+        "@types/express-serve-static-core": "*",
+        "@types/mime": "*"
+      }
+    },
     "@webassemblyjs/ast": {
       "version": "1.8.5",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.8.5.tgz",
@@ -1460,6 +1572,65 @@
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
       "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ=="
     },
+    "babel-code-frame": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
+      "requires": {
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
+        },
+        "ansi-styles": {
+          "version": "2.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+          "dev": true
+        },
+        "chalk": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
+          }
+        },
+        "js-tokens": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz",
+          "integrity": "sha1-mGbfOVECEw449/mWvOtlRDIJwls=",
+          "dev": true
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+          "dev": true
+        }
+      }
+    },
     "babel-loader": {
       "version": "8.0.6",
       "resolved": "https://registry.npmjs.org/babel-loader/-/babel-loader-8.0.6.tgz",
@@ -3257,6 +3428,22 @@
       "resolved": "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz",
       "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE="
     },
+    "fork-ts-checker-webpack-plugin": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/fork-ts-checker-webpack-plugin/-/fork-ts-checker-webpack-plugin-1.5.0.tgz",
+      "integrity": "sha512-zEhg7Hz+KhZlBhILYpXy+Beu96gwvkROWJiTXOCyOOMMrdBIRPvsBpBqgTI4jfJGrJXcqGwJR8zsBGDmzY0jsA==",
+      "dev": true,
+      "requires": {
+        "babel-code-frame": "^6.22.0",
+        "chalk": "^2.4.1",
+        "chokidar": "^2.0.4",
+        "micromatch": "^3.1.10",
+        "minimatch": "^3.0.4",
+        "semver": "^5.6.0",
+        "tapable": "^1.0.0",
+        "worker-rpc": "^0.1.0"
+      }
+    },
     "form-data": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz",
@@ -4141,6 +4328,23 @@
         "function-bind": "^1.1.1"
       }
     },
+    "has-ansi": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/has-ansi/-/has-ansi-2.0.0.tgz",
+      "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "^2.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
+        }
+      }
+    },
     "has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
@@ -5177,6 +5381,12 @@
       "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=",
       "dev": true
     },
+    "microevent.ts": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/microevent.ts/-/microevent.ts-0.1.1.tgz",
+      "integrity": "sha512-jo1OfR4TaEwd5HOrt5+tAZ9mqT4jmpNAusXtyfNzqVm9uiSYFZlKM1wYL4oU7azZW/PxQW53wM0S6OR1JHNa2g==",
+      "dev": true
+    },
     "micromatch": {
       "version": "3.1.10",
       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
@@ -7296,6 +7506,27 @@
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
       "dev": true
     },
+    "source-map-loader": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/source-map-loader/-/source-map-loader-0.2.4.tgz",
+      "integrity": "sha512-OU6UJUty+i2JDpTItnizPrlpOIBLmQbWMuBg9q5bVtnHACqw1tn9nNwqJLbv0/00JjnJb/Ee5g5WS5vrRv7zIQ==",
+      "dev": true,
+      "requires": {
+        "async": "^2.5.0",
+        "loader-utils": "^1.1.0"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "dev": true,
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        }
+      }
+    },
     "source-map-resolve": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.2.tgz",
@@ -7879,6 +8110,12 @@
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
+    "typescript": {
+      "version": "3.6.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.3.tgz",
+      "integrity": "sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==",
+      "dev": true
+    },
     "uc.micro": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.6.tgz",
@@ -8538,6 +8775,15 @@
         "errno": "~0.1.7"
       }
     },
+    "worker-rpc": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/worker-rpc/-/worker-rpc-0.1.1.tgz",
+      "integrity": "sha512-P1WjMrUB3qgJNI9jfmpZ/htmBEjFh//6l/5y8SD9hg1Ef5zTTVVoRjTrTEzPrNBQvmhMxkoTsjOXN10GWU7aCg==",
+      "dev": true,
+      "requires": {
+        "microevent.ts": "~0.1.1"
+      }
+    },
     "wrap-ansi": {
       "version": "2.1.0",
       "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
diff --git a/package.json b/package.json
index 1dd0d88b6..36d6511d8 100644
--- a/package.json
+++ b/package.json
@@ -45,11 +45,16 @@
     "@babel/core": "^7.5.5",
     "@babel/plugin-transform-runtime": "^7.5.5",
     "@babel/preset-env": "^7.5.5",
+    "@babel/preset-typescript": "^7.6.0",
     "@babel/register": "^7.5.5",
+    "@types/chai": "^4.2.3",
+    "@types/express": "^4.17.1",
+    "@types/mocha": "^5.2.7",
     "babel-loader": "^8.0.6",
     "chai": "^4.2.0",
     "diff": "^4.0.1",
     "dirty-chai": "^2.0.1",
+    "fork-ts-checker-webpack-plugin": "^1.5.0",
     "fs-grep": "^0.0.5",
     "jsdoc": "^3.6.3",
     "mocha": "^6.2.0",
@@ -59,6 +64,8 @@
     "rimraf": "^3.0.0",
     "sinon": "^7.4.1",
     "sinon-chai": "^3.3.0",
+    "source-map-loader": "^0.2.4",
+    "typescript": "^3.6.3",
     "webpack": "^4.39.2",
     "webpack-cli": "^3.3.6",
     "webpack-dev-server": "^3.8.0",
@@ -87,9 +94,9 @@
     "test:serialize:11": "cd ./tests/serialize && node ./data.js -in=structures.n3 -format=application/rdf+xml  -out=,structures.xml && node diff ,structures.xml t11-ref.xml",
     "test:serialize:12": "cd ./tests/serialize && node ./data.js -in=structures.n3 -format=text/turtle -out=,structures.ttl && node diff ,structures.ttl t12-ref.ttl",
     "test:serialize:13": "cd ./tests/serialize && node ./data.js -in=structures.n3 -format=application/n-triples -out=,structures.nt && node ./data.js -format=application/n-triples -in=,structures.nt -format=text/turtle -out=,structures.nt.ttl && node diff ,structures.nt.ttl t13-ref.ttl",
-    "test:unit": "mocha --growl --require @babel/register tests/unit/**-test.js",
-    "test:unit:egp": "mocha --require @babel/register tests/unit/fetcher-egp-test.js",
-    "test:unit:dev": "mocha --watch --growl --require @babel/register tests/unit/**-test.js"
+    "test:unit": "mocha --growl --require ./tests/babel-register.js tests/unit/**-test.js",
+    "test:unit:egp": "mocha --require ./tests/babel-register.js tests/unit/fetcher-egp-test.js",
+    "test:unit:dev": "mocha --watch --growl --require ./tests/babel-register.js tests/unit/**-test.js"
   },
   "files": [
     ".babelrc",
@@ -97,8 +104,8 @@
     "lib",
     "dist"
   ],
-  "main": "lib/index.js",
-  "module": "src/index.js",
+  "main": "lib/index",
+  "module": "src/index",
   "sideEffects": false,
   "keywords": [
     "linkeddata",
diff --git a/src/index.js b/src/index.ts
similarity index 100%
rename from src/index.js
rename to src/index.ts
diff --git a/tests/babel-register.js b/tests/babel-register.js
new file mode 100644
index 000000000..cfdd56125
--- /dev/null
+++ b/tests/babel-register.js
@@ -0,0 +1,3 @@
+const register = require('@babel/register').default;
+
+register({ extensions: ['.ts','.tsx', '.js', '.jsx'] });
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 000000000..6422bc88e
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+      "outDir": "./dist",
+      "allowJs": true,
+      "target": "es5",
+      "module": "commonjs",
+      "types": [
+        "node",
+        "mocha",
+        "express"
+      ],
+      "strict": true,
+      "noImplicitAny": false
+  },
+  "include": [
+      "./src/**/*"
+  ]
+}
diff --git a/webpack.config.js b/webpack.config.js
index 9c88bd791..8823d59ab 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,11 +1,12 @@
 const path = require('path')
 const WrapperPlugin = require('wrapper-webpack-plugin');
+const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
 
 module.exports = (env, args) => {
   return {
     mode: 'production',
     entry: [
-      './src/index.js'
+      './src/index.ts'
     ],
     output: {
       path: path.join(__dirname, '/dist/'),
@@ -16,9 +17,13 @@ module.exports = (env, args) => {
     module: {
       rules: [
         {
-          test: /\.js$/,
+          test: /\.(js|ts)$/,
           loader: 'babel-loader',
           exclude: /node_modules/
+        },
+        {
+          test: /\.(js|ts)$/,
+          loader: "source-map-loader"
         }
       ]
     },
@@ -32,7 +37,8 @@ module.exports = (env, args) => {
                    if (!window.solid.auth)
                      window.solid.auth = { fetch: (a, b) => window.fetch(a, b) }
                  }`
-      })
+      }),
+      new ForkTsCheckerWebpackPlugin(),
     ],
     externals: {
       '@trust/webcrypto': 'crypto',