diff --git a/.babelrc b/.babelrc
index 30c9a9580c..5431d60eb7 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,12 +1,3 @@
 {
-  "presets": [
-    "env",
-    "stage-0"
-  ],
-  "plugins": [
-    "transform-flow-strip-types",
-    "transform-class-properties",
-    "transform-object-rest-spread",
-    "transform-runtime"
-  ]
+  "extends": "@polkadot/dev/.babelrc"
 }
diff --git a/.eslintrc.json b/.eslintrc.json
index 4bee27805f..362928d3ee 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,35 +1,5 @@
 {
-  "env": {
-    "browser": true,
-    "mocha": true,
-    "node": true
-  },
   "extends": [
-    "semistandard",
-    "plugin:flowtype/recommended"
-  ],
-  "globals": {
-    "expect": true
-  },
-  "parser": "babel-eslint",
-  "plugins": [
-    "flowtype"
-  ],
-  "rules": {
-    "curly": ["error", "all"],
-    "newline-after-var": ["error", "always"],
-    "no-alert": "error",
-    "no-debugger": "error",
-    "no-duplicate-imports": ["error", {
-      "includeExports": true
-    }],
-    "object-curly-spacing": ["error", "always"],
-    "object-property-newline": 0,
-    "one-var-declaration-per-line": ["error", "always"],
-    "padded-blocks": ["error", {
-      "blocks": "never",
-      "classes": "never",
-      "switches": "never"
-    }]
-  }
+    "./node_modules/@polkadot/dev/.eslintrc.json"
+  ]
 }
diff --git a/.gitignore b/.gitignore
index 49a8b5ab22..dc6b3fa26a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
+build/
 coverage/
-lib/
+docs/
 node_modules/
 tmp/
diff --git a/.npmignore b/.npmignore
index 30e898f5b1..aba78e6e42 100644
--- a/.npmignore
+++ b/.npmignore
@@ -1,4 +1,5 @@
 coverage
+docs
 scripts
 src
 test
diff --git a/.travis.yml b/.travis.yml
index 02e934b034..60fb30f02a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
 language: node_js
 node_js:
   - "8"
-script: ./scripts/travis.sh
+script: node_modules/.bin/polkadot-dev-build-travis build check coveralls npm test
diff --git a/LICENSE b/LICENSE
index c35dc7b52e..e4ee6869c3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,15 @@
 ISC License (ISC)
-Copyright 2017 Jaco Greeff
 
-Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
+Copyright 2017 Jaco Greeff <jacogr@gmail.com>
 
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
diff --git a/README.md b/README.md
index b137537ec6..594582b72a 100644
--- a/README.md
+++ b/README.md
@@ -15,3 +15,19 @@ Installation -
 ```
 npm install --save @polkadot/util
 ```
+
+Functions can be imported directly from the package, e.g.
+
+```js
+import { isHex } from '@polkadot/util';
+```
+
+Alternatively the function can be accessed directly,
+
+```js
+import isHex from '@polkadot/util/is/hex';
+```
+
+## Available Utilities
+
+For a list of currently exposed methods, see the [library documentation](docs/README.md).
diff --git a/docs/.keep b/docs/.keep
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/package-lock.json b/package-lock.json
index 21726f48d7..c1eb604e69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -144,6 +144,49 @@
         }
       }
     },
+    "@polkadot/dev": {
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/@polkadot/dev/-/dev-0.1.5.tgz",
+      "integrity": "sha512-YKn0qDHKqq2m8KbZIBKGkSX2V6zF/sLCu0c5MXBNGXr2Ab3KmB4zVi0Xbdhoq7bYXQjVKb12a9x+2XqeV22P1A==",
+      "dev": true,
+      "requires": {
+        "babel-cli": "6.26.0",
+        "babel-core": "6.26.0",
+        "babel-eslint": "8.0.2",
+        "babel-plugin-transform-class-properties": "6.24.1",
+        "babel-plugin-transform-flow-strip-types": "6.22.0",
+        "babel-plugin-transform-object-rest-spread": "6.26.0",
+        "babel-plugin-transform-runtime": "6.23.0",
+        "babel-preset-env": "1.6.1",
+        "babel-preset-flow": "6.23.0",
+        "babel-preset-stage-0": "6.24.1",
+        "babel-runtime": "6.26.0",
+        "coveralls": "3.0.0",
+        "dox": "0.9.0",
+        "eslint": "4.11.0",
+        "eslint-config-semistandard": "11.0.0",
+        "eslint-config-standard": "10.2.1",
+        "eslint-config-standard-react": "5.0.0",
+        "eslint-plugin-flowtype": "2.39.1",
+        "eslint-plugin-import": "2.8.0",
+        "eslint-plugin-node": "5.2.1",
+        "eslint-plugin-promise": "3.6.0",
+        "eslint-plugin-react": "7.5.1",
+        "eslint-plugin-standard": "3.0.1",
+        "flow-bin": "0.59.0",
+        "makeshift": "1.1.0",
+        "mkdirp": "0.5.1",
+        "rimraf": "2.6.2",
+        "stylelint": "8.2.0",
+        "stylelint-config-standard": "17.0.0"
+      }
+    },
+    "@polkadot/jsonrpc": {
+      "version": "0.3.4",
+      "resolved": "https://registry.npmjs.org/@polkadot/jsonrpc/-/jsonrpc-0.3.4.tgz",
+      "integrity": "sha512-YyUPVmT/06Arpk1+FPNxNpVqHfh+JJ0WboNmZ3+Zhi1KQJQ+JIHps2mCt7qccUxtImlbGqloEbQwv27TI3e5TA==",
+      "dev": true
+    },
     "abbrev": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
@@ -174,9 +217,9 @@
       }
     },
     "ajv": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.3.0.tgz",
-      "integrity": "sha1-RBT/dKUIecII7l/cgm4ywwNUnto=",
+      "version": "5.4.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.4.0.tgz",
+      "integrity": "sha1-MtHPCNvIDEMvQm8S4QslEfa0ZHQ=",
       "dev": true,
       "requires": {
         "co": "4.6.0",
@@ -264,7 +307,6 @@
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
       "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
       "dev": true,
-      "optional": true,
       "requires": {
         "arr-flatten": "1.1.0"
       }
@@ -273,8 +315,23 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
       "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "dev": true
+    },
+    "array-find-index": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
+      "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
+      "dev": true
+    },
+    "array-includes": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
+      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
       "dev": true,
-      "optional": true
+      "requires": {
+        "define-properties": "1.1.2",
+        "es-abstract": "1.9.0"
+      }
     },
     "array-union": {
       "version": "1.0.2",
@@ -295,8 +352,7 @@
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
       "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "arrify": {
       "version": "1.0.1",
@@ -304,6 +360,12 @@
       "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
       "dev": true
     },
+    "asap": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/asap/-/asap-2.0.6.tgz",
+      "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=",
+      "dev": true
+    },
     "asn1": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
@@ -341,6 +403,20 @@
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
       "dev": true
     },
+    "autoprefixer": {
+      "version": "7.1.6",
+      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-7.1.6.tgz",
+      "integrity": "sha512-C9yv/UF3X+eJTi/zvfxuyfxmLibYrntpF3qoJYrMeQwgUJOZrZvpJiMG2FMQ3qnhWtF/be4pYONBBw95ZGe3vA==",
+      "dev": true,
+      "requires": {
+        "browserslist": "2.9.0",
+        "caniuse-lite": "1.0.30000766",
+        "normalize-range": "0.1.2",
+        "num2fraction": "1.2.2",
+        "postcss": "6.0.14",
+        "postcss-value-parser": "3.3.0"
+      }
+    },
     "aws-sign2": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
@@ -634,6 +710,12 @@
         "wordwrap": "1.0.0"
       },
       "dependencies": {
+        "esprima": {
+          "version": "2.7.3",
+          "resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.3.tgz",
+          "integrity": "sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=",
+          "dev": true
+        },
         "has-flag": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
@@ -657,6 +739,15 @@
           "requires": {
             "has-flag": "1.0.0"
           }
+        },
+        "which": {
+          "version": "1.2.14",
+          "resolved": "https://registry.npmjs.org/which/-/which-1.2.14.tgz",
+          "integrity": "sha1-mofEN48D6CfOyvGs31bHNsAcFOU=",
+          "dev": true,
+          "requires": {
+            "isexe": "2.0.0"
+          }
         }
       }
     },
@@ -1269,6 +1360,7 @@
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
       "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+      "dev": true,
       "requires": {
         "core-js": "2.5.1",
         "regenerator-runtime": "0.11.0"
@@ -1393,7 +1485,6 @@
       "resolved": "https://registry.npmjs.org/braces/-/braces-1.8.5.tgz",
       "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
       "dev": true,
-      "optional": true,
       "requires": {
         "expand-range": "1.8.2",
         "preserve": "0.2.0",
@@ -1438,11 +1529,20 @@
       "dev": true
     },
     "camelcase": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
-      "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk=",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
+      "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8=",
+      "dev": true
+    },
+    "camelcase-keys": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-2.1.0.tgz",
+      "integrity": "sha1-MIvur/3ygRkFHvodkyITyRuPkuc=",
       "dev": true,
-      "optional": true
+      "requires": {
+        "camelcase": "2.1.1",
+        "map-obj": "1.0.1"
+      }
     },
     "caniuse-lite": {
       "version": "1.0.30000766",
@@ -1515,6 +1615,7 @@
       "requires": {
         "anymatch": "1.3.2",
         "async-each": "1.0.1",
+        "fsevents": "1.1.3",
         "glob-parent": "2.0.0",
         "inherits": "2.0.3",
         "is-binary-path": "1.0.1",
@@ -1570,6 +1671,16 @@
         }
       }
     },
+    "clone-regexp": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/clone-regexp/-/clone-regexp-1.0.0.tgz",
+      "integrity": "sha1-6uCiQT9VwJQvgYwin+/OhF1/Oxw=",
+      "dev": true,
+      "requires": {
+        "is-regexp": "1.0.0",
+        "is-supported-regexp-flag": "1.0.0"
+      }
+    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -1648,13 +1759,37 @@
     "core-js": {
       "version": "2.5.1",
       "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.5.1.tgz",
-      "integrity": "sha1-rmh03GaTd4m4B1T/VCjfZoGcpQs="
+      "integrity": "sha1-rmh03GaTd4m4B1T/VCjfZoGcpQs=",
+      "dev": true
     },
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
+    "cosmiconfig": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-3.1.0.tgz",
+      "integrity": "sha512-zedsBhLSbPBms+kE7AH4vHg6JsKDz6epSv2/+5XHs8ILHlgDciSJfSWf8sX9aQ52Jb7KI7VswUTsLpR/G0cr2Q==",
+      "dev": true,
+      "requires": {
+        "is-directory": "0.3.1",
+        "js-yaml": "3.10.0",
+        "parse-json": "3.0.0",
+        "require-from-string": "2.0.1"
+      },
+      "dependencies": {
+        "parse-json": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-3.0.0.tgz",
+          "integrity": "sha1-+m9HsY4jgm6tMvJj50TQ4ehH+xM=",
+          "dev": true,
+          "requires": {
+            "error-ex": "1.3.1"
+          }
+        }
+      }
+    },
     "coveralls": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/coveralls/-/coveralls-3.0.0.tgz",
@@ -1666,14 +1801,6 @@
         "log-driver": "1.2.5",
         "minimist": "1.2.0",
         "request": "2.83.0"
-      },
-      "dependencies": {
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-          "dev": true
-        }
       }
     },
     "cross-env": {
@@ -1694,7 +1821,7 @@
       "requires": {
         "lru-cache": "4.1.1",
         "shebang-command": "1.2.0",
-        "which": "1.2.14"
+        "which": "1.3.0"
       }
     },
     "cryptiles": {
@@ -1717,6 +1844,15 @@
         }
       }
     },
+    "currently-unhandled": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
+      "integrity": "sha1-mI3zP+qxke95mmE2nddsF635V+o=",
+      "dev": true,
+      "requires": {
+        "array-find-index": "1.0.2"
+      }
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -1739,8 +1875,7 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "deep-eql": {
       "version": "3.0.1",
@@ -1762,6 +1897,16 @@
       "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
       "dev": true
     },
+    "define-properties": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.2.tgz",
+      "integrity": "sha1-g6c/L+pWmJj7c3GTyPhzyvbUXJQ=",
+      "dev": true,
+      "requires": {
+        "foreach": "2.0.5",
+        "object-keys": "1.0.11"
+      }
+    },
     "del": {
       "version": "2.2.2",
       "resolved": "https://registry.npmjs.org/del/-/del-2.2.2.tgz",
@@ -1813,6 +1958,28 @@
         "isarray": "1.0.0"
       }
     },
+    "dox": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/dox/-/dox-0.9.0.tgz",
+      "integrity": "sha1-vpewhcufSgt+gINdVH53uGh9Cgw=",
+      "dev": true,
+      "requires": {
+        "commander": "2.9.0",
+        "jsdoctypeparser": "1.2.0",
+        "markdown-it": "7.0.1"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.9.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
+          "integrity": "sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=",
+          "dev": true,
+          "requires": {
+            "graceful-readlink": "1.0.1"
+          }
+        }
+      }
+    },
     "ecc-jsbn": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz",
@@ -1829,6 +1996,15 @@
       "integrity": "sha1-eOy4o5kGYYe7N07t412ccFZagD0=",
       "dev": true
     },
+    "encoding": {
+      "version": "0.1.12",
+      "resolved": "https://registry.npmjs.org/encoding/-/encoding-0.1.12.tgz",
+      "integrity": "sha1-U4tm8+5izRq1HsMjgp0flIDHS+s=",
+      "dev": true,
+      "requires": {
+        "iconv-lite": "0.4.19"
+      }
+    },
     "end-of-stream": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.0.tgz",
@@ -1837,6 +2013,12 @@
         "once": "1.4.0"
       }
     },
+    "entities": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.1.tgz",
+      "integrity": "sha1-blwtClYhtdra7O+AuQ7ftc13cvA=",
+      "dev": true
+    },
     "error-ex": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.1.tgz",
@@ -1846,6 +2028,30 @@
         "is-arrayish": "0.2.1"
       }
     },
+    "es-abstract": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.9.0.tgz",
+      "integrity": "sha512-kk3IJoKo7A3pWJc0OV8yZ/VEX2oSUytfekrJiqoxBlKJMFAJVJVpGdHClCCTdv+Fn2zHfpDHHIelMFhZVfef3Q==",
+      "dev": true,
+      "requires": {
+        "es-to-primitive": "1.1.1",
+        "function-bind": "1.1.1",
+        "has": "1.0.1",
+        "is-callable": "1.1.3",
+        "is-regex": "1.0.4"
+      }
+    },
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+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
+          "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk=",
+          "dev": true,
+          "optional": true
+        }
       }
     }
   }
diff --git a/package.json b/package.json
index 584a2cc252..d8cee90d23 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/util",
-  "version": "0.4.1",
+  "version": "0.5.0",
   "description": "A collection of useful utilities for @polkadot",
   "main": "index.js",
   "keywords": [
@@ -24,47 +24,25 @@
   },
   "homepage": "https://github.com/polkadot-js/util#readme",
   "scripts": {
-    "build": "npm run build:js",
-    "build:js": "rimraf lib && babel src --out-dir lib --ignore *.spec.js,types.js",
-    "check": "npm run check:flow && npm run check:lint",
+    "build": "npm run build:js && npm run build:md",
+    "build:js": "rimraf lib && babel src --out-dir build --ignore *.spec.js",
+    "build:md": "polkadot-dev-build-docs",
+    "check": "npm run check:lint && npm run check:flow",
     "check:flow": "flow check",
     "check:lint": "eslint src",
-    "ci:makeshift": "makeshift",
-    "ci:coveralls": "coveralls < coverage/lcov.info",
     "test": "cross-env NODE_ENV=test babel-istanbul cover _mocha 'src/*.spec.js' 'src/**/*.spec.js'"
   },
   "devDependencies": {
-    "babel-cli": "^6.26.0",
-    "babel-core": "^6.26.0",
-    "babel-eslint": "^8.0.2",
+    "@polkadot/dev": "^0.1.5",
+    "@polkadot/jsonrpc": "^0.3.4",
     "babel-istanbul": "^0.12.2",
-    "babel-plugin-transform-class-properties": "^6.24.1",
-    "babel-plugin-transform-flow-strip-types": "^6.22.0",
-    "babel-plugin-transform-object-rest-spread": "^6.26.0",
-    "babel-plugin-transform-runtime": "^6.23.0",
-    "babel-preset-env": "^1.6.1",
-    "babel-preset-flow": "^6.23.0",
-    "babel-preset-stage-0": "^6.24.1",
     "chai": "^4.1.2",
-    "coveralls": "^3.0.0",
     "cross-env": "^5.1.1",
-    "eslint": "^4.11.0",
-    "eslint-config-semistandard": "^11.0.0",
-    "eslint-config-standard": "^10.2.1",
-    "eslint-plugin-flowtype": "^2.39.1",
-    "eslint-plugin-import": "^2.8.0",
-    "eslint-plugin-node": "^5.2.1",
-    "eslint-plugin-promise": "^3.6.0",
-    "eslint-plugin-standard": "^3.0.1",
-    "flow-bin": "^0.59.0",
-    "makeshift": "^1.1.0",
     "mocha": "^4.0.1",
-    "rimraf": "^2.6.2",
     "sinon": "^4.1.2",
     "sinon-chai": "^2.14.0"
   },
   "dependencies": {
-    "babel-runtime": "^6.26.0",
     "bn.js": "^4.11.8",
     "keccak": "^1.3.0"
   }
diff --git a/scripts/travis.sh b/scripts/travis.sh
deleted file mode 100755
index 495bab9252..0000000000
--- a/scripts/travis.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/bash
-# ISC, Copyright 2017 Jaco Greeff
-
-set -e
-
-function setupGit () {
-  REPO=$1
-
-  echo "Setting up GitHub config for $REPO"
-
-  git config push.default simple
-  git config merge.ours.driver true
-  git config user.name "Travis CI"
-  git config user.email "$COMMIT_AUTHOR_EMAIL"
-  git remote set-url origin https://${GH_TOKEN}@github.com/${REPO}.git > /dev/null 2>&1
-}
-
-echo "Running code checks & build"
-
-npm run check
-npm run build
-npm run test
-npm run ci:coveralls
-
-# Pull requests and commits to other branches shouldn't try to deploy, just build to verify
-if [ "$TRAVIS_PULL_REQUEST" != "false" -o "$TRAVIS_BRANCH" != "master" ]; then
-  echo "Branch check completed"
-
-  exit 0
-fi
-
-setupGit ${TRAVIS_REPO_SLUG}
-
-if [ -n "$(git status --untracked-files=no --porcelain)" ]; then
-  echo "Adding build artifacts"
-
-  git add .
-  git commit -m "[CI Skip] Build artifacts"
-fi
-
-echo "Incrementing package version"
-
-npm --no-git-tag-version version
-npm version patch -m "[CI Skip] Version bump"
-git push --quiet origin HEAD:refs/heads/$TRAVIS_BRANCH > /dev/null 2>&1
-
-echo "Publishing to npm"
-
-npm run ci:makeshift
-cp LICENSE package.json package-lock.json lib/
-cd lib
-npm publish
-cd ..
-
-echo "Release completed"
-
-exit 0
diff --git a/src/bn/fromHex.js b/src/bn/fromHex.js
index a1e6867f92..44201db43e 100644
--- a/src/bn/fromHex.js
+++ b/src/bn/fromHex.js
@@ -8,7 +8,18 @@ const isHex = require('../is/hex');
 
 const ZERO_BN = new BN(0);
 
-module.exports = function fromHex (value?: string): BN {
+/**
+  @name bnFromHex
+  @signature bnFromHex (value?: string): BN
+  @summary Creates a BN.js bignumber object from a hex string.
+  @description
+    `null` inputs returns a `BN(0)` result. Hex input values return the actual value converted to a BN. Anything that is not a hex string (including the `0x` prefix) throws an error.
+  @example
+    import { bnFromHex } from '@polkadot/util';
+
+    console.log('BN object', bnFromHex('0x123480001f'));
+*/
+module.exports = function bnFromHex (value?: string): BN {
   if (!value) {
     return ZERO_BN;
   }
diff --git a/src/bn/index.js b/src/bn/index.js
index d63b5cda9b..7e54dd1e97 100644
--- a/src/bn/index.js
+++ b/src/bn/index.js
@@ -4,6 +4,9 @@
 const bnFromHex = require('./fromHex');
 const bnToHex = require('./toHex');
 
+/**
+  @summary Utility methods to convert to and from `BN` objects
+*/
 module.exports = {
   bnFromHex,
   bnToHex
diff --git a/src/bn/toHex.js b/src/bn/toHex.js
index a6a1b7ec5d..41b2bc379b 100644
--- a/src/bn/toHex.js
+++ b/src/bn/toHex.js
@@ -8,7 +8,19 @@ const isBN = require('../is/bn');
 
 const ZERO_STR = '0x';
 
-module.exports = function toHex (value?: BN): string {
+/**
+  @name bnToHex
+  @signature bnToHex (value?: BN): string
+  @summary Creates a hex value from a BN.js bignumber object.
+  @description
+    `null` inputs returns a `0x` result, BN values return the actual value as a `0x` prefixed hex value. Anything that is not a BN object throws an error.
+  @example
+    import BN from 'bn.js';
+    import { bnToHex } from '@polkadot/util';
+
+    console.log('Hex value', bnToHex(new BN(123456));
+*/
+module.exports = function bnToHex (value?: BN): string {
   if (!value) {
     return ZERO_STR;
   }
diff --git a/src/buffer/fromHex.js b/src/buffer/fromHex.js
index c7a08f495f..5793d37344 100644
--- a/src/buffer/fromHex.js
+++ b/src/buffer/fromHex.js
@@ -6,7 +6,18 @@ const hexStripPrefix = require('../hex/stripPrefix');
 
 const EMPTY_BUFFER = Buffer.from([]);
 
-module.exports = function fromHex (value?: string): Buffer {
+/**
+  @name bufferFromHex
+  @signature bufferFromHex (value?: string): Buffer
+  @summary Creates a Buffer object from a hex string.
+  @description
+    `null` inputs returns an empty `Buffer` result. Hex input values return the actual bytes value converted to a Buffer. Anything that is not a hex string (including the `0x` prefix) throws an error.
+  @example
+    import { bufferFromHex } from '@polkadot/util';
+
+    console.log('Buffer object', bufferFromHex('0x123480001f'));
+*/
+module.exports = function bufferFromHex (value?: string): Buffer {
   if (!value) {
     return EMPTY_BUFFER;
   }
diff --git a/src/buffer/index.js b/src/buffer/index.js
index 8c781f3e83..c07a200890 100644
--- a/src/buffer/index.js
+++ b/src/buffer/index.js
@@ -4,6 +4,9 @@
 const bufferFromHex = require('./fromHex');
 const bufferToHex = require('./toHex');
 
+/**
+  @summary Utility methods to convert to and from `Buffer` objects
+*/
 module.exports = {
   bufferFromHex,
   bufferToHex
diff --git a/src/buffer/toHex.js b/src/buffer/toHex.js
index f9d04942e6..17653628af 100644
--- a/src/buffer/toHex.js
+++ b/src/buffer/toHex.js
@@ -6,7 +6,18 @@ const hexAddPrefix = require('../hex/addPrefix');
 
 const ZERO_HEX = '0x';
 
-module.exports = function toHex (value?: Buffer): string {
+/**
+  @name bufferToHex
+  @signature bufferToHex (value?: Buffer): string
+  @summary Creates a hex value from a Buffer object.
+  @description
+    `null` inputs returns a `0x` result, `Buffer` values return the actual value as a `0x` prefixed hex value. Anything that is not a `Buffer` object throws an error.
+  @example
+    import { bufferToHex } from '@polkadot/util';
+
+    console.log('Hex value', bufferToHex(Buffer.from([1, 2, 3]));
+*/
+module.exports = function bufferToHex (value?: Buffer): string {
   if (!value) {
     return ZERO_HEX;
   }
diff --git a/src/hex/addPrefix.js b/src/hex/addPrefix.js
index 3e834ff8e8..00a3a5c6ef 100644
--- a/src/hex/addPrefix.js
+++ b/src/hex/addPrefix.js
@@ -3,7 +3,18 @@
 
 const hasPrefix = require('./hasPrefix');
 
-module.exports = function addPrefix (value: ?string): string {
+/**
+  @name hexAddPrefix
+  @signature hexAddPrefix (value: ?string): string
+  @summary Adds the `0x` prefix to string values.
+  @description
+    Returns a `0x` prefixed string from the input value. If the input is already prefixed, it is returned unchanged.
+  @example
+    import { hexAddPrefix } from '@polkadot/util';
+
+    console.log('With prefix', hexAddPrefix('0a0b12')) // => 0x0a0b12
+*/
+module.exports = function hexAddPrefix (value: ?string): string {
   if (value && hasPrefix(value)) {
     return value;
   }
diff --git a/src/hex/hasPrefix.js b/src/hex/hasPrefix.js
index 45469d1552..890b66b200 100644
--- a/src/hex/hasPrefix.js
+++ b/src/hex/hasPrefix.js
@@ -3,6 +3,17 @@
 
 const isHex = require('../is/hex');
 
-module.exports = function hasPrefix (value: ?string): boolean {
+/**
+  @name hexHasPrefix
+  @signature hexHasPrefix (value: ?string): boolean
+  @summary Tests for the existence of a `0x` prefix.
+  @description
+    Checks for a valid hex input value and if the start matched `0x`
+  @example
+    import { hexHasPrefix } from '@polkadot/util';
+
+    console.log('has prefix', hexHasPrefix('0x1234')); // => true
+*/
+module.exports = function hexHasPrefix (value: ?string): boolean {
   return !!(value && isHex(value) && value.substr(0, 2) === '0x');
 };
diff --git a/src/hex/index.js b/src/hex/index.js
index ea39c8d5d9..e94ae330e2 100644
--- a/src/hex/index.js
+++ b/src/hex/index.js
@@ -5,6 +5,9 @@ const hexAddPrefix = require('./addPrefix');
 const hexHasPrefix = require('./hasPrefix');
 const hexStripPrefix = require('./stripPrefix');
 
+/**
+  @summary Internal utilities to create and test for hex values
+*/
 module.exports = {
   hexAddPrefix,
   hexHasPrefix,
diff --git a/src/hex/stripPrefix.js b/src/hex/stripPrefix.js
index f71b8077e0..216e3dd0da 100644
--- a/src/hex/stripPrefix.js
+++ b/src/hex/stripPrefix.js
@@ -3,7 +3,18 @@
 
 const hasPrefix = require('./hasPrefix');
 
-module.exports = function stripPrefix (value: ?string): string {
+/**
+  @name hexStripPrefix
+  @signature hexStripPrefix (value: ?string): string
+  @summary Strips any leading `0x` prefix.
+  @description
+    Tests for the existence of a `0x` prefix, and returns the value without the prefix. Un-prefixed values are returned as-is.
+  @example
+    import { hexStripPrefix } from '@polkadot/util';
+
+    console.log('stripped', hexStripPrefix('0x1234')); // => 1234
+*/
+module.exports = function hexStripPrefix (value: ?string): string {
   if (value && hasPrefix(value)) {
     return value.substr(2);
   }
diff --git a/src/index.js b/src/index.js
index 05daadab22..9624e5135e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -5,8 +5,12 @@ const bn = require('./bn');
 const buffer = require('./buffer');
 const hex = require('./hex');
 const is = require('./is');
+const jsonrpc = require('./jsonrpc');
 const keccak = require('./keccak');
 
+/**
+  @summary Utility methods for this package are split into groups
+*/
 module.exports = Object.assign(
-  {}, bn, buffer, hex, is, keccak
+  {}, bn, buffer, hex, is, jsonrpc, keccak
 );
diff --git a/src/is/bn.js b/src/is/bn.js
index 2dd912fc31..7873c33334 100644
--- a/src/is/bn.js
+++ b/src/is/bn.js
@@ -3,6 +3,18 @@
 
 const BN = require('bn.js');
 
+/**
+  @name isBN
+  @signature isBN (value: any): boolean
+  @summary Tests for a `BN` object instance.
+  @description
+    Checks to see if the input object is an instance of `BN` (bn.js).
+  @example
+    import BN from 'bn.js';
+    import { isBN } from '@polkadot/util';
+
+    console.log('isBN', isBN(new BN(1))); // => true
+*/
 module.exports = function isBN (value: any): boolean {
   return BN.isBN(value);
 };
diff --git a/src/is/buffer.js b/src/is/buffer.js
index 02a935846f..08841f351f 100644
--- a/src/is/buffer.js
+++ b/src/is/buffer.js
@@ -3,6 +3,17 @@
 
 const isInstanceOf = require('./instanceOf');
 
-module.exports = function isBuffer (value?: any): boolean {
+/**
+  @name isBuffer
+  @signature isBuffer (value: any): boolean
+  @summary Tests for a `Buffer` object instance.
+  @description
+    Checks to see if the input object is an instance of `Buffer`.
+  @example
+    import { isBuffer } from '@polkadot/util';
+
+    console.log('isBuffer', isBuffer(Buffer.from([]))); // => true
+*/
+module.exports = function isBuffer (value: any): boolean {
   return isInstanceOf(value, Buffer);
 };
diff --git a/src/is/function.js b/src/is/function.js
index 8a16e68bca..d1256a86c9 100644
--- a/src/is/function.js
+++ b/src/is/function.js
@@ -1,6 +1,17 @@
 // ISC, Copyright 2017 Jaco Greeff
 // @flow
 
+/**
+  @name isFunction
+  @signature isFunction (value: any): boolean
+  @summary Tests for a `function`.
+  @description
+    Checks to see if the input value is a JavaScript function.
+  @example
+    import { isFunction } from '@polkadot/util';
+
+    console.log('isFunction', isFunction(() => false)); // => true
+*/
 module.exports = function isFunction (value: any): boolean {
   return typeof value === 'function';
 };
diff --git a/src/is/hex.js b/src/is/hex.js
index 6a6dd4ed83..93f86fc78b 100644
--- a/src/is/hex.js
+++ b/src/is/hex.js
@@ -5,6 +5,17 @@ const isString = require('./string');
 
 const HEX_REGEX = /^0x[a-fA-F0-9]+$/;
 
+/**
+  @name isHex
+  @signature isHex (value: any): boolean
+  @summary Tests for a hex string.
+  @description
+    Checks to see if the input value is a `0x` prefixed hex string.
+  @example
+    import { isHex } from '@polkadot/util';
+
+    console.log('isHex', isHex('0x1234')); // => true
+*/
 module.exports = function isHex (value: any): boolean {
   return isString(value) && HEX_REGEX.test(value);
 };
diff --git a/src/is/index.js b/src/is/index.js
index cc3e186ac2..55bfcd2320 100644
--- a/src/is/index.js
+++ b/src/is/index.js
@@ -9,6 +9,9 @@ const isNumber = require('./number');
 const isString = require('./string');
 const isUndefined = require('./undefined');
 
+/**
+  @summary Type checking utilities
+*/
 module.exports = {
   isBN,
   isFunction,
diff --git a/src/is/instanceOf.js b/src/is/instanceOf.js
index 4730450c0b..6f55deabba 100644
--- a/src/is/instanceOf.js
+++ b/src/is/instanceOf.js
@@ -1,6 +1,17 @@
 // ISC, Copyright 2017 Jaco Greeff
 // @flow
 
+/**
+  @name isInstanceOf
+  @signature isInstanceOf (value: any, clazz: any): boolean
+  @summary Tests for a instance of a class.
+  @description
+    Checks to see if the input value is an instance of the test class.
+  @example
+    import { isInstanceOf } from '@polkadot/util';
+
+    console.log('isinstanceOf', isInstanceOf(new Array(0), Array)); // => true
+*/
 module.exports = function isInstanceOf (value: any, clazz: any): boolean {
   return value instanceof clazz;
 };
diff --git a/src/is/number.js b/src/is/number.js
index acaf539fdb..f38e5d9ee1 100644
--- a/src/is/number.js
+++ b/src/is/number.js
@@ -1,6 +1,17 @@
 // ISC, Copyright 2017 Jaco Greeff
 // @flow
 
+/**
+  @name isNumber
+  @signature isNumber (value: any): boolean
+  @summary Tests for a JavaScript number.
+  @description
+    Checks to see if the input value is a valid number.
+  @example
+    import { isNumber } from '@polkadot/util';
+
+    console.log('isNumber', isNumber(1234)); // => true
+*/
 module.exports = function isNumber (value: any): boolean {
   return typeof value === 'number';
 };
diff --git a/src/is/string.js b/src/is/string.js
index ff9c4b6a2b..08e46f0023 100644
--- a/src/is/string.js
+++ b/src/is/string.js
@@ -1,6 +1,17 @@
 // ISC, Copyright 2017 Jaco Greeff
 // @flow
 
+/**
+  @name isString
+  @signature isString (value: any): boolean
+  @summary Tests for a string.
+  @description
+    Checks to see if the input value is a JavaScript string.
+  @example
+    import { isString } from '@polkadot/util';
+
+    console.log('isString', isString('test')); // => true
+*/
 module.exports = function isString (value: any): boolean {
   return typeof value === 'string';
 };
diff --git a/src/is/undefined.js b/src/is/undefined.js
index 574582e991..ec0778732e 100644
--- a/src/is/undefined.js
+++ b/src/is/undefined.js
@@ -1,6 +1,17 @@
 // ISC, Copyright 2017 Jaco Greeff
 // @flow
 
+/**
+  @name isUndefined
+  @signature isUndefined (value: any): boolean
+  @summary Tests for a `undefined` values.
+  @description
+    Checks to see if the input value is `undefined`.
+  @example
+    import { isUndefined } from '@polkadot/util';
+
+    console.log('isUndefined', isUndefined(void(0))); // => true
+*/
 module.exports = function isUndefined (value: any): boolean {
   return typeof value === 'undefined';
 };
diff --git a/src/jsonrpc/index.js b/src/jsonrpc/index.js
new file mode 100644
index 0000000000..3da7a99c6e
--- /dev/null
+++ b/src/jsonrpc/index.js
@@ -0,0 +1,11 @@
+// ISC, Copyright 2017 Jaco Greeff
+// @flow
+
+const jsonrpcSignature = require('./signature');
+
+/**
+  @summary Convenience functions for values from @polkadot/jsonrpc
+*/
+module.exports = {
+  jsonrpcSignature
+};
diff --git a/src/jsonrpc/index.spec.js b/src/jsonrpc/index.spec.js
new file mode 100644
index 0000000000..b89077ae4b
--- /dev/null
+++ b/src/jsonrpc/index.spec.js
@@ -0,0 +1,20 @@
+// ISC, Copyright 2017 Jaco Greeff
+
+const { jsonrpcSignature } = require('./index');
+
+describe('jsonrpc', () => {
+  describe('jsonrpcSignature', () => {
+    it('formats the signature according to the specification', () => {
+      expect(
+        jsonrpcSignature(
+          'test_method',
+          [
+            { name: 'b', type: 'A' },
+            { name: 'a', type: 'B' }
+          ],
+          { type: 'A' }
+        )
+      ).to.equal('test_method (b: A, a: B): A');
+    });
+  });
+});
diff --git a/src/jsonrpc/signature.js b/src/jsonrpc/signature.js
new file mode 100644
index 0000000000..1ae6620b3e
--- /dev/null
+++ b/src/jsonrpc/signature.js
@@ -0,0 +1,25 @@
+// ISC, Copyright 2017 Jaco Greeff
+// @flow
+
+import type { InterfaceInputType, InterfaceOutputType } from '@polkadot/jsonrpc/types';
+
+/**
+  @name jsonrpcSignature
+  @signature jsonrpcSignature (name: string, _inputs: Array<InterfaceInputType>, _output: InterfaceOutputType): string
+  @summary Returns a string representation of the method with inputs and outputs.
+  @description
+    Formats the name, inputs and outputs into a human-readable string. This contains the input parameter names, input types and output type.
+  @example
+    import { jsonrpcSignature } from '@polkadot/util';
+
+    console.log(jsonrpcSignature(
+      'test_method', [{ name: 'dest', type: 'Address' }], { type: 'Address' }
+    )); // => test_method (destination: Address): Address
+*/
+module.exports = function jsonrpcSignature (name: string, _inputs: Array<InterfaceInputType>, _output: InterfaceOutputType): string {
+  const inputParams: string = _inputs
+    .map(({ name, type }) => `${name}: ${type}`)
+    .join(', ');
+
+  return `${name} (${inputParams}): ${_output.type}`;
+};
diff --git a/src/keccak/asBuffer.js b/src/keccak/asBuffer.js
index bf62145e1d..7a8134da44 100644
--- a/src/keccak/asBuffer.js
+++ b/src/keccak/asBuffer.js
@@ -3,6 +3,17 @@
 
 const createKeccak = require('keccak');
 
+/**
+  @name keccakAsBuffer
+  @signature keccakAsBuffer (value: Buffer | string): Buffer
+  @summary Creates a keccak Buffer from the input.
+  @description
+    From either a `string` or a `Buffer` input, create the keccak and return the result as a `Buffer`.
+  @example
+    import { keccakAsBuffer } from '@polkadot/util';
+
+    console.log('asBuffer', keccakAsBuffer('123')) // => Buffer
+*/
 module.exports = function keccakAsBuffer (value: Buffer | string): Buffer {
   return createKeccak('keccak256').update(value).digest();
 };
diff --git a/src/keccak/asHex.js b/src/keccak/asHex.js
index 63e71317b0..e816511033 100644
--- a/src/keccak/asHex.js
+++ b/src/keccak/asHex.js
@@ -4,6 +4,17 @@
 const keccakAsBuffer = require('./asBuffer');
 const bufferToHex = require('../buffer/toHex');
 
+/**
+  @name keccakAsHex
+  @signature keccakAsHex (value: Buffer | string): string
+  @summary Creates a keccak hex string from the input.
+  @description
+    From either a `string` or a `Buffer` input, create the keccak and return the result as a `0x` prefixed hex string.
+  @example
+    import { keccakAsHex } from '@polkadot/util';
+
+    console.log('asHex', keccakAsHex('123')) // => 0x...
+*/
 module.exports = function keccakAsHex (value: Buffer | string): string {
   return bufferToHex(
     keccakAsBuffer(value)
diff --git a/src/keccak/asString.js b/src/keccak/asString.js
index 8decb1872c..44c29aa3d3 100644
--- a/src/keccak/asString.js
+++ b/src/keccak/asString.js
@@ -3,6 +3,17 @@
 
 const keccakAsBuffer = require('./asBuffer');
 
+/**
+  @name keccakAsString
+  @signature keccakAsString (value: Buffer | string): string
+  @summary Creates a keccak string from the input.
+  @description
+    From either a `string` or a `Buffer` input, create the keccak and return the result as a non-prefixed string.
+  @example
+    import { keccakAsString } from '@polkadot/util';
+
+    console.log('asString', keccakAsString('123')) // => string
+*/
 module.exports = function keccakAsString (value: Buffer | string): string {
   return keccakAsBuffer(value).toString('hex');
 };
diff --git a/src/keccak/index.js b/src/keccak/index.js
index b145baf483..8063f8930b 100644
--- a/src/keccak/index.js
+++ b/src/keccak/index.js
@@ -5,6 +5,9 @@ const keccakAsBuffer = require('./asBuffer');
 const keccakAsHex = require('./asHex');
 const keccakAsString = require('./asString');
 
+/**
+  @summary Create Keccak256 values as hex, string & buffer output
+*/
 module.exports = {
   keccakAsBuffer,
   keccakAsHex,