diff --git a/packages/colony-js-adapter-ethers/src/EthersAdapter.js b/packages/colony-js-adapter-ethers/src/EthersAdapter.js
index a129eba7a..7d0df7c7f 100644
--- a/packages/colony-js-adapter-ethers/src/EthersAdapter.js
+++ b/packages/colony-js-adapter-ethers/src/EthersAdapter.js
@@ -13,13 +13,15 @@ import type {
   Signature,
   Transaction,
 } from '@colony/colony-js-adapter';
-import type { IContractLoader, Query } from '@colony/colony-js-contract-loader';
+import type { Query } from '@colony/colony-js-contract-loader';
+
+import ContractLoader from '@colony/colony-js-contract-loader';
 
-import EthersContract from './EthersContract';
 import type { ConstructorArgs } from './flowtypes';
+import EthersContract from './EthersContract';
 
 export default class EthersAdapter implements IAdapter {
-  loader: IContractLoader;
+  loader: ContractLoader;
   provider: IProvider;
   wallet: IWallet;
   static getEventPromises({
diff --git a/packages/colony-js-adapter-ethers/src/flowtypes.js b/packages/colony-js-adapter-ethers/src/flowtypes.js
index fd159ec3a..e7d902995 100644
--- a/packages/colony-js-adapter-ethers/src/flowtypes.js
+++ b/packages/colony-js-adapter-ethers/src/flowtypes.js
@@ -1,10 +1,10 @@
 /* @flow */
 
 import type { Event, IProvider, IWallet } from '@colony/colony-js-adapter';
-import type { IContractLoader } from '@colony/colony-js-contract-loader';
+import ContractLoader from '@colony/colony-js-contract-loader';
 
 export type ConstructorArgs = {
-  loader: IContractLoader,
+  loader: ContractLoader,
   provider: IProvider,
   wallet: IWallet,
 };
diff --git a/packages/colony-js-adapter/interface/Adapter.js b/packages/colony-js-adapter/interface/Adapter.js
index 0d7524671..92780c1fd 100644
--- a/packages/colony-js-adapter/interface/Adapter.js
+++ b/packages/colony-js-adapter/interface/Adapter.js
@@ -1,7 +1,6 @@
 /* @flow */
 
-import type { IContractLoader, Query } from '@colony/colony-js-contract-loader';
-
+import type { Query } from '@colony/colony-js-contract-loader';
 import type { Contract } from './Contract';
 import type { EventHandlers } from './EventHandlers';
 import type { Provider } from './Provider';
@@ -10,8 +9,10 @@ import type { Transaction } from './Transaction';
 import type { TransactionReceipt } from './TransactionReceipt';
 import type { Wallet } from './Wallet';
 
+import ContractLoader from '@colony/colony-js-contract-loader';
+
 export interface Adapter {
-  loader: IContractLoader;
+  loader: ContractLoader;
   provider: Provider;
   wallet: Wallet;
   ecRecover(digest: Array<number>, signature: Signature): string;
diff --git a/packages/colony-js-client/package.json b/packages/colony-js-client/package.json
index 88a055f09..88df4a6b1 100644
--- a/packages/colony-js-client/package.json
+++ b/packages/colony-js-client/package.json
@@ -46,9 +46,9 @@
         "@colony/colony-js-contract-client": "^1.2.1",
         "@colony/colony-js-contract-loader": "^1.2.1",
         "@colony/colony-js-utils": "^1.2.1",
+        "assert": "^1.4.1",
         "babel-runtime": "^6.26.0",
         "bn.js": "^4.11.6",
-        "browser-assert": "^1.2.1",
         "web3-utils": "^1.0.0-beta.34"
     },
     "engines": {
diff --git a/packages/colony-js-client/src/ColonyClient/callers/GetTask.js b/packages/colony-js-client/src/ColonyClient/callers/GetTask.js
index 8464adc08..132eb14c5 100644
--- a/packages/colony-js-client/src/ColonyClient/callers/GetTask.js
+++ b/packages/colony-js-client/src/ColonyClient/callers/GetTask.js
@@ -1,7 +1,7 @@
 /* @flow */
 /* eslint-disable no-underscore-dangle */
 
-import assert from 'browser-assert';
+import assert from 'assert';
 import BigNumber from 'bn.js';
 import ContractClient from '@colony/colony-js-contract-client';
 import { isBigNumber } from '@colony/colony-js-utils';
diff --git a/packages/colony-js-client/src/ColonyClient/index.js b/packages/colony-js-client/src/ColonyClient/index.js
index c8b74cb43..fa771180c 100644
--- a/packages/colony-js-client/src/ColonyClient/index.js
+++ b/packages/colony-js-client/src/ColonyClient/index.js
@@ -1,6 +1,6 @@
 /* @flow */
 
-import assert from 'browser-assert';
+import assert from 'assert';
 
 import type BigNumber from 'bn.js';
 
diff --git a/packages/colony-js-client/src/ColonyNetworkClient/index.js b/packages/colony-js-client/src/ColonyNetworkClient/index.js
index d8022214c..0a8655edc 100644
--- a/packages/colony-js-client/src/ColonyNetworkClient/index.js
+++ b/packages/colony-js-client/src/ColonyNetworkClient/index.js
@@ -1,6 +1,6 @@
 /* @flow */
 
-import assert from 'browser-assert';
+import assert from 'assert';
 import { utf8ToHex } from 'web3-utils';
 import { isValidAddress } from '@colony/colony-js-utils';
 import BigNumber from 'bn.js';
diff --git a/packages/colony-js-contract-client/package.json b/packages/colony-js-contract-client/package.json
index 554856030..2f4600363 100644
--- a/packages/colony-js-contract-client/package.json
+++ b/packages/colony-js-contract-client/package.json
@@ -44,9 +44,9 @@
         "@colony/colony-js-adapter": "^1.2.1",
         "@colony/colony-js-contract-loader": "^1.2.1",
         "@colony/colony-js-utils": "^1.2.1",
+        "assert": "^1.4.1",
         "babel-runtime": "^6.26.0",
         "bn.js": "^4.11.6",
-        "browser-assert": "^1.2.1",
         "bs58": "^4.0.1",
         "lodash.isequal": "^4.5.0",
         "lodash.isplainobject": "^4.0.6",
diff --git a/packages/colony-js-contract-client/src/__tests__/MultisigOperation.js b/packages/colony-js-contract-client/src/__tests__/MultisigOperation.js
index 1049be739..7aed83d1b 100644
--- a/packages/colony-js-contract-client/src/__tests__/MultisigOperation.js
+++ b/packages/colony-js-contract-client/src/__tests__/MultisigOperation.js
@@ -2,7 +2,7 @@
 /* eslint-disable no-underscore-dangle */
 
 import createSandbox from 'jest-sandbox';
-import assert from 'browser-assert';
+import assert from 'assert';
 import {
   hexToBytes,
   isAddress,
@@ -16,7 +16,7 @@ import isEqual from 'lodash.isequal';
 
 import MultisigOperation from '../classes/MultisigOperation';
 
-jest.mock('browser-assert', () => jest.fn().mockReturnValue(true));
+jest.mock('assert', () => jest.fn().mockReturnValue(true));
 
 jest.mock('lodash.isplainobject', () => jest.fn().mockReturnValue(true));
 
diff --git a/packages/colony-js-contract-client/src/classes/ContractMethodMultisigSender.js b/packages/colony-js-contract-client/src/classes/ContractMethodMultisigSender.js
index 1c6b4eb57..a2ec5d02e 100644
--- a/packages/colony-js-contract-client/src/classes/ContractMethodMultisigSender.js
+++ b/packages/colony-js-contract-client/src/classes/ContractMethodMultisigSender.js
@@ -1,6 +1,6 @@
 /* @flow */
 
-import assert from 'browser-assert';
+import assert from 'assert';
 import { isBigNumber, isValidAddress } from '@colony/colony-js-utils';
 import type { TransactionOptions } from '@colony/colony-js-adapter';
 
diff --git a/packages/colony-js-contract-client/src/classes/MultisigOperation.js b/packages/colony-js-contract-client/src/classes/MultisigOperation.js
index 8af84b6d6..3503af0be 100644
--- a/packages/colony-js-contract-client/src/classes/MultisigOperation.js
+++ b/packages/colony-js-contract-client/src/classes/MultisigOperation.js
@@ -2,7 +2,7 @@
 /* eslint-disable no-underscore-dangle */
 
 import { padLeft, soliditySha3, isHexStrict, hexToBytes } from 'web3-utils';
-import defaultAssert from 'browser-assert';
+import defaultAssert from 'assert';
 import { isValidAddress, makeAssert } from '@colony/colony-js-utils';
 import isPlainObject from 'lodash.isplainobject';
 import isEqual from 'lodash.isequal';
diff --git a/packages/colony-js-contract-loader-fs/README.md b/packages/colony-js-contract-loader-fs/README.md
new file mode 100644
index 000000000..c7fd982b8
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/README.md
@@ -0,0 +1,23 @@
+# colonyJS Contract Loader for Node.js using the filesystem
+
+This package provides a means to load Ethereum smart contracts simply via
+the node `fs` module, for local testing and in dev environments
+
+## Installation
+
+```
+yarn add @colony/colony-js-contract-loader-fs
+```
+
+
+## Usage
+
+// TODO DOCS
+Please see [the full documentation](https://joincolony.github.io/colonyjs/api-loaders/#INSERTCORRECTANCHORHERE).
+
+
+## Contributing
+
+This package is part of the [colonyJS monorepo](https://github.com/JoinColony/colonyJS).
+
+Please read our [contributing guidelines](https://github.com/JoinColony/colonyJS/blob/master/CONTRIBUTING.md).
diff --git a/packages/colony-js-contract-loader-fs/jest.conf.json b/packages/colony-js-contract-loader-fs/jest.conf.json
new file mode 100644
index 000000000..a4aa067b4
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/jest.conf.json
@@ -0,0 +1,10 @@
+{
+    "rootDir": "src",
+    "collectCoverageFrom" : ["*.{js}", "**/*.{js}"],
+    "coverageDirectory": "../coverage",
+    "coverageThreshold": {
+        "global": {
+            "branches": 0
+        }
+    }
+  }
diff --git a/packages/colony-js-contract-loader-fs/package.json b/packages/colony-js-contract-loader-fs/package.json
new file mode 100644
index 000000000..52257eda5
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/package.json
@@ -0,0 +1,59 @@
+{
+    "name": "@colony/colony-js-contract-loader-fs",
+    "version": "1.0.0",
+    "description": "Load Ethereum smart contract definitions/metadata from the filesystem (in node.js)",
+    "main": "lib/index.js",
+    "files": [
+        "lib",
+        "README.md"
+    ],
+    "scripts": {
+        "build": "yarn run build:flow && yarn run build:lib",
+        "build:flow": "flow-copy-source src lib --ignore '__tests__/*.js'",
+        "build:lib": "flow-remove-types --out-dir lib/ src/",
+        "dev": "nodemon",
+        "flow": "flow check",
+        "lint": "eslint src",
+        "precommit": "lint-staged",
+        "test": "yarn run flow && yarn run lint && yarn run test:unit",
+        "test:unit": "jest --coverage --config=jest.conf.json"
+    },
+    "lint-staged": {
+        "src/{,**/}*.js": [
+            "lint --fix",
+            "git add"
+        ]
+    },
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/JoinColony/colonyJS.git"
+    },
+    "contributors": [
+        "Christian Maniewski <chris@colony.io>",
+        "Griffin Hotchkiss <griffin@colony.io>",
+        "James Lefrère <james@colony.io>",
+        "Jan Kaßel <jan@colony.io>",
+        "Raul Glogovetan <raul@colony.io>"
+    ],
+    "license": "MIT",
+    "bugs": {
+        "url": "https://github.com/JoinColony/colonyJS/issues"
+    },
+    "homepage": "https://github.com/JoinColony/colonyJS#readme",
+    "dependencies": {
+        "@colony/colony-js-contract-loader": "^1.2.0",
+        "jsonfile": "^4.0.0"
+    },
+    "devDependencies": {
+        "flow-bin": "^0.72.0",
+        "flow-copy-source": "^2.0.0",
+        "flow-remove-types": "^1.2.3",
+        "jest": "^22.4.0",
+        "jest-sandbox": "^1.1.2",
+        "nodemon": "^1.17.5"
+    },
+    "engines": {
+        "node": ">=8.2.1",
+        "yarn": ">=1.3.2"
+    }
+}
diff --git a/packages/colony-js-contract-loader-fs/src/__tests__/index.js b/packages/colony-js-contract-loader-fs/src/__tests__/index.js
new file mode 100644
index 000000000..3793e36d6
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/src/__tests__/index.js
@@ -0,0 +1,44 @@
+/* eslint-env jest */
+/* eslint no-underscore-dangle: 0 */
+
+import createSandbox from 'jest-sandbox';
+import FSLoader from '../loaders/FSLoader';
+
+jest.mock('jsonfile', () => ({
+  readFile: jest.fn((file, cb) =>
+    cb(null, {
+      address: '0x123',
+      abi: [{ myData: 123 }],
+    }),
+  ),
+}));
+
+describe('ContractFsLoader', () => {
+  const sandbox = createSandbox();
+  const setupLoader = () => new FSLoader({ contractDir: '/tmp' });
+
+  const requiredProps = {
+    address: true,
+    abi: true,
+    bytecode: false,
+  };
+
+  beforeEach(() => {
+    sandbox.clear();
+  });
+
+  test('Default implementation', async () => {
+    const loader = setupLoader();
+
+    const query = { contractName: 'MyCoolContract' };
+    const { address, abi } = await loader.load(query, requiredProps);
+    expect(address).toEqual('0x123');
+    expect(abi).toEqual([{ myData: 123 }]);
+  });
+
+  test('Throws if contract name not given', async () => {
+    const loader = setupLoader();
+    const query = { contractAddress: '0xdeafbeef' };
+    expect(loader.load(query, requiredProps)).rejects.toThrow();
+  });
+});
diff --git a/packages/colony-js-contract-loader-fs/src/flowtypes.js b/packages/colony-js-contract-loader-fs/src/flowtypes.js
new file mode 100644
index 000000000..32230d2ff
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/src/flowtypes.js
@@ -0,0 +1,18 @@
+/* @flow */
+
+import type { Transform } from '@colony/colony-js-contract-loader';
+
+export type ConstructorArgs = {
+  contractDir: string,
+  transform: Transform,
+};
+
+export type TruffleArtifact = {
+  abi: Array<{}>,
+  bytecode: string,
+  networks: {
+    [networkId: number]: {
+      address: string,
+    },
+  },
+};
diff --git a/packages/colony-js-contract-loader-fs/src/index.js b/packages/colony-js-contract-loader-fs/src/index.js
new file mode 100644
index 000000000..2c24f9b79
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/src/index.js
@@ -0,0 +1,7 @@
+/* @flow */
+
+const TruffleLoader = require('./loaders/TruffleLoader');
+const FSLoader = require('./loaders/FSLoader');
+
+exports.TruffleLoader = TruffleLoader;
+exports.FSLoader = FSLoader;
diff --git a/packages/colony-js-contract-loader-fs/src/loaders/FSLoader.js b/packages/colony-js-contract-loader-fs/src/loaders/FSLoader.js
new file mode 100644
index 000000000..22a2315c9
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/src/loaders/FSLoader.js
@@ -0,0 +1,53 @@
+/* @flow */
+
+import type {
+  ContractDefinition,
+  IContractLoader,
+  RequiredContractProps,
+  Query,
+} from '@colony/colony-js-contract-loader';
+
+import type { ConstructorArgs } from '../flowtypes';
+
+const assert = require('assert');
+const path = require('path');
+const jsonfile = require('jsonfile');
+
+const ContractLoader = require('@colony/colony-js-contract-loader').default;
+
+class FSLoader extends ContractLoader implements IContractLoader {
+  _contractDir: string;
+
+  constructor({ contractDir, transform }: ConstructorArgs = {}) {
+    super({ transform });
+    assert(
+      typeof contractDir === 'string' && contractDir,
+      'A `contractDir` option must be provided',
+    );
+    this._contractDir = contractDir;
+  }
+  async _load(
+    query: Query = {},
+    requiredProps?: RequiredContractProps,
+  ): Promise<?ContractDefinition> {
+    const { contractName = '' } = query;
+
+    assert(!!contractName, 'A `contractName` option must be provided');
+
+    const file = path.resolve(this._contractDir, `${contractName}.json`);
+    return new Promise((resolve, reject) => {
+      jsonfile.readFile(file, (error, contents) => {
+        let transformed;
+        if (error) return reject(error);
+        try {
+          transformed = this._transform(contents, query, requiredProps);
+        } catch (transformError) {
+          return reject(transformError);
+        }
+        return resolve(transformed);
+      });
+    });
+  }
+}
+
+module.exports = FSLoader;
diff --git a/packages/colony-js-contract-loader-fs/src/loaders/TruffleLoader.js b/packages/colony-js-contract-loader-fs/src/loaders/TruffleLoader.js
new file mode 100644
index 000000000..32c4c4133
--- /dev/null
+++ b/packages/colony-js-contract-loader-fs/src/loaders/TruffleLoader.js
@@ -0,0 +1,15 @@
+/* @flow */
+
+import type { ConstructorArgs } from '../flowtypes';
+
+const FSLoader = require('./FSLoader');
+
+const { truffleTransform } = require('@colony/colony-js-contract-loader');
+
+class TruffleLoader extends FSLoader {
+  constructor({ contractDir }: ConstructorArgs = {}) {
+    super({ transform: truffleTransform, contractDir });
+  }
+}
+
+module.exports = TruffleLoader;
diff --git a/packages/colony-js-contract-loader-http/package.json b/packages/colony-js-contract-loader-http/package.json
index 28a30f4ea..824da9320 100644
--- a/packages/colony-js-contract-loader-http/package.json
+++ b/packages/colony-js-contract-loader-http/package.json
@@ -44,8 +44,8 @@
     "homepage": "https://github.com/JoinColony/colonyJS#readme",
     "dependencies": {
         "@colony/colony-js-contract-loader": "^1.2.1",
+        "assert": "^1.4.1",
         "babel-runtime": "^6.26.0",
-        "browser-assert": "^1.2.1",
         "isomorphic-fetch": "^2.2.1"
     },
     "devDependencies": {
diff --git a/packages/colony-js-contract-loader-http/src/__tests__/index.js b/packages/colony-js-contract-loader-http/src/__tests__/index.js
index dfca79040..b83a1c9b3 100644
--- a/packages/colony-js-contract-loader-http/src/__tests__/index.js
+++ b/packages/colony-js-contract-loader-http/src/__tests__/index.js
@@ -2,7 +2,7 @@
 /* eslint no-underscore-dangle: 0 */
 
 import createSandbox from 'jest-sandbox';
-import ContractHttpLoader from '../loaders/ContractHttpLoader';
+import ContractHttpLoader from '../loaders/HttpLoader';
 import TrufflepigLoader from '../loaders/TrufflepigLoader';
 import EtherscanLoader from '../loaders/EtherscanLoader';
 import MetaCoin from '../__mocks__/MetaCoin.json';
diff --git a/packages/colony-js-contract-loader-http/src/flowtypes.js b/packages/colony-js-contract-loader-http/src/flowtypes.js
index fc2554e90..d9a2cee19 100644
--- a/packages/colony-js-contract-loader-http/src/flowtypes.js
+++ b/packages/colony-js-contract-loader-http/src/flowtypes.js
@@ -6,13 +6,3 @@ export type ConstructorArgs = {
   endpoint: string,
   transform: Transform,
 };
-
-export type TruffleArtifact = {
-  abi: Array<{}>,
-  bytecode: string,
-  networks: {
-    [networkId: number]: {
-      address: string,
-    },
-  },
-};
diff --git a/packages/colony-js-contract-loader-http/src/index.js b/packages/colony-js-contract-loader-http/src/index.js
index 14d53d7f2..c367fe3b0 100644
--- a/packages/colony-js-contract-loader-http/src/index.js
+++ b/packages/colony-js-contract-loader-http/src/index.js
@@ -1,8 +1,5 @@
 /* @flow */
 
-import ContractHttpLoader from './loaders/ContractHttpLoader';
-import EtherscanLoader from './loaders/EtherscanLoader';
-import TrufflepigLoader from './loaders/TrufflepigLoader';
-
-export default ContractHttpLoader;
-export { ContractHttpLoader, EtherscanLoader, TrufflepigLoader };
+export { default as HttpLoader } from './loaders/HttpLoader';
+export { default as EtherscanLoader } from './loaders/EtherscanLoader';
+export { default as TrufflepigLoader } from './loaders/TrufflepigLoader';
diff --git a/packages/colony-js-contract-loader-http/src/loaders/EtherscanLoader.js b/packages/colony-js-contract-loader-http/src/loaders/EtherscanLoader.js
index af83e5b08..0bc743313 100644
--- a/packages/colony-js-contract-loader-http/src/loaders/EtherscanLoader.js
+++ b/packages/colony-js-contract-loader-http/src/loaders/EtherscanLoader.js
@@ -2,7 +2,7 @@
 
 import type { Query } from '@colony/colony-js-contract-loader';
 
-import ContractHttpLoader from './ContractHttpLoader';
+import HttpLoader from './HttpLoader';
 
 import type { ConstructorArgs } from '../flowtypes';
 
@@ -44,7 +44,7 @@ function etherscanTransform(response: any, query?: Query = {}) {
   return parsed;
 }
 
-export default class EtherscanLoader extends ContractHttpLoader {
+export default class EtherscanLoader extends HttpLoader {
   constructor({
     transform = etherscanTransform,
     endpoint = DEFAULT_ENDPOINT,
diff --git a/packages/colony-js-contract-loader-http/src/loaders/HttpLoader.js b/packages/colony-js-contract-loader-http/src/loaders/HttpLoader.js
new file mode 100644
index 000000000..a3a0d1ae2
--- /dev/null
+++ b/packages/colony-js-contract-loader-http/src/loaders/HttpLoader.js
@@ -0,0 +1,83 @@
+/* @flow */
+
+import assert from 'assert';
+import 'isomorphic-fetch';
+import ContractLoader from '@colony/colony-js-contract-loader';
+
+import type {
+  ContractDefinition,
+  IContractLoader,
+  RequiredContractProps,
+  Query,
+} from '@colony/colony-js-contract-loader';
+
+import type { ConstructorArgs } from '../flowtypes';
+
+export default class HttpLoader extends ContractLoader
+  implements IContractLoader {
+  _endpoint: string;
+
+  constructor({ endpoint, transform }: ConstructorArgs = {}) {
+    super({ transform });
+    assert(
+      typeof endpoint === 'string' && endpoint,
+      'An `endpoint` option must be provided',
+    );
+    this._endpoint = endpoint;
+  }
+  resolveEndpointResource({
+    contractName,
+    contractAddress,
+    version,
+  }: Query): string {
+    return (
+      this._endpoint
+        .replace('%%NAME%%', contractName || '')
+        .replace('%%ADDRESS%%', contractAddress || '')
+        // `version` can be a string or an integer
+        .replace(
+          '%%VERSION%%',
+          version != null &&
+          (typeof version === 'string' ||
+            Number(parseInt(version, 10)) === version)
+            ? version.toString()
+            : '',
+        )
+    );
+  }
+  async _load(
+    query: Query = {},
+    requiredProps?: RequiredContractProps,
+  ): Promise<?ContractDefinition> {
+    // Provide some context for errors thrown by lower-level functions
+    const throwError = (action: string, error: any) => {
+      throw new Error(
+        `Unable to ${action} for contract ${query.contractName ||
+          query.contractAddress ||
+          ''}: ${error.message || error}`,
+      );
+    };
+
+    let response;
+    try {
+      response = await fetch(this.resolveEndpointResource(query));
+    } catch (error) {
+      throwError('fetch resource', error);
+    }
+
+    let json;
+    try {
+      json = response && response.json && (await response.json());
+    } catch (error) {
+      throwError('get JSON', error);
+    }
+
+    let contractDef;
+    try {
+      contractDef = this._transform(json, query, requiredProps);
+    } catch (error) {
+      throwError('transform contract definition', error);
+    }
+    return contractDef;
+  }
+}
diff --git a/packages/colony-js-contract-loader-http/src/loaders/TrufflepigLoader.js b/packages/colony-js-contract-loader-http/src/loaders/TrufflepigLoader.js
index 108b51f4f..84920d253 100644
--- a/packages/colony-js-contract-loader-http/src/loaders/TrufflepigLoader.js
+++ b/packages/colony-js-contract-loader-http/src/loaders/TrufflepigLoader.js
@@ -1,50 +1,21 @@
 /* @flow */
 
 import 'isomorphic-fetch';
-import type { Query } from '@colony/colony-js-contract-loader';
+import { truffleTransform } from '@colony/colony-js-contract-loader';
 
-import ContractHttpLoader from './ContractHttpLoader';
+import type { ConstructorArgs } from '../flowtypes';
 
-import type { TruffleArtifact, ConstructorArgs } from '../flowtypes';
+import HttpLoader from './HttpLoader';
 
 const DEFAULT_HOST = 'http://127.0.0.1:3030';
 
 const DEFAULT_ENDPOINT = `${DEFAULT_HOST}/contracts?name=%%NAME%%&address=%%ADDRESS%%&version=%%VERSION%%`; // eslint-disable-line max-len
 
-function trufflepigTransform(
-  { abi = [], bytecode, networks = {} }: TruffleArtifact = {},
-  { networkId }: Query = {},
-) {
-  let address;
-
-  const networkIds = Object.keys(networks);
-
-  if (networkId && networkIds.length) {
-    if (!networks[networkId])
-      throw new Error(`Network ID ${networkId} not found in contract`);
-    ({ address } = networks[networkId]);
-  } else {
-    // Pick the last network (assumed to be the most recent)
-    ({ address } =
-      networks[parseInt(networkIds[networkIds.length - 1], 10)] || {});
-  }
-
-  return {
-    abi,
-    address,
-    bytecode,
-  };
-}
-
-export default class TrufflepigLoader extends ContractHttpLoader {
+export default class TrufflepigLoader extends HttpLoader {
   _host: string;
 
-  constructor({
-    transform = trufflepigTransform,
-    endpoint = DEFAULT_ENDPOINT,
-    ...rest
-  }: ConstructorArgs = {}) {
-    super({ transform, endpoint, ...rest });
+  constructor({ endpoint = DEFAULT_ENDPOINT }: ConstructorArgs = {}) {
+    super({ transform: truffleTransform, endpoint });
     const [host] = this._endpoint.split('/contracts');
     this._host = host;
   }
diff --git a/packages/colony-js-contract-loader/package.json b/packages/colony-js-contract-loader/package.json
index 18bd53b46..f7385b63d 100644
--- a/packages/colony-js-contract-loader/package.json
+++ b/packages/colony-js-contract-loader/package.json
@@ -2,10 +2,9 @@
     "name": "@colony/colony-js-contract-loader",
     "version": "1.2.1",
     "description": "Contract loader interfaces",
-    "main": "index.js",
+    "main": "lib/index.js",
     "files": [
-        "interface",
-        "index.js",
+        "lib",
         "README.md"
     ],
     "repository": {
@@ -13,9 +12,13 @@
         "url": "git+https://github.com/JoinColony/colonyJS.git"
     },
     "scripts": {
-        "lint": "eslint ./{,interface/}*.js",
-        "precommit": "lint-staged",
-        "prepublish": "yarn run precommit"
+        "build": "yarn run clean && yarn run build:lib && yarn run build:flow",
+        "build:flow": "flow-copy-source src lib --ignore '__tests__/*.js'",
+        "build:lib": "babel src --out-dir lib --ignore __tests__ --source-maps",
+        "clean": "shx rm -rf lib",
+        "flow": "flow check",
+        "lint": "eslint src/{,**/}*.js",
+        "precommit": "lint-staged"
     },
     "lint-staged": {
         "./{,interface/}*": [
@@ -33,10 +36,15 @@
     },
     "homepage": "https://github.com/JoinColony/colonyJS#readme",
     "devDependencies": {
-        "flow-bin": "^0.72.0"
+        "flow-bin": "^0.73.0",
+        "flow-copy-source": "^2.0.0"
     },
     "engines": {
         "node": ">=8.2.1",
         "yarn": ">=1.3.2"
+    },
+    "dependencies": {
+        "assert": "^1.4.1",
+        "babel-runtime": "^6.26.0"
     }
 }
diff --git a/packages/colony-js-contract-loader-http/src/loaders/ContractHttpLoader.js b/packages/colony-js-contract-loader/src/ContractLoader.js
similarity index 54%
rename from packages/colony-js-contract-loader-http/src/loaders/ContractHttpLoader.js
rename to packages/colony-js-contract-loader/src/ContractLoader.js
index 8208db99b..348ce77d6 100644
--- a/packages/colony-js-contract-loader-http/src/loaders/ContractHttpLoader.js
+++ b/packages/colony-js-contract-loader/src/ContractLoader.js
@@ -1,18 +1,16 @@
 /* @flow */
 
-import assert from 'browser-assert';
-import 'isomorphic-fetch';
-
 import type {
   ContractDefinition,
-  IContractLoader,
+  ConstructorArgs,
   Transform,
   RequiredContractProps,
   Query,
-} from '@colony/colony-js-contract-loader';
+} from './interface/ContractLoader';
+
+import { DEFAULT_REQUIRED_CONTRACT_PROPS } from './defaults';
 
-import type { ConstructorArgs } from '../flowtypes';
-import { DEFAULT_REQUIRED_CONTRACT_PROPS } from '../defaults';
+const assert = require('assert');
 
 const validateField = (assertion, field) =>
   assert(
@@ -20,21 +18,20 @@ const validateField = (assertion, field) =>
     `Invalid contract definition: ${field} is missing or invalid`,
   );
 
-export default class ContractHttpLoader implements IContractLoader {
-  _endpoint: string;
+export default class ContractLoader {
   _transform: Transform;
 
   /**
-   * The default `transform` function is simply returns the JSON object as the
+   * The default `transform` function is simply returns the input object as the
    * default behaviour.
    */
   static defaultTransform(): Transform {
     /* eslint-disable no-unused-vars */
     return (
-      jsonObj: any,
+      inputObj: any,
       query?: Query,
       requiredProps?: RequiredContractProps,
-    ) => jsonObj;
+    ) => inputObj;
     /* eslint-enable no-unused-vars */
   }
 
@@ -68,74 +65,22 @@ export default class ContractHttpLoader implements IContractLoader {
     return true;
   }
   constructor({
-    endpoint,
     transform = this.constructor.defaultTransform(),
   }: ConstructorArgs = {}) {
-    assert(
-      typeof endpoint === 'string',
-      'An `endpoint` option must be provided',
-    );
     assert(
       typeof transform === 'function',
       'A `transform` function must be provided',
     );
-    this._endpoint = endpoint;
     this._transform = transform;
   }
-  resolveEndpointResource({
-    contractName,
-    contractAddress,
-    version,
-  }: Query): string {
-    return (
-      this._endpoint
-        .replace('%%NAME%%', contractName || '')
-        .replace('%%ADDRESS%%', contractAddress || '')
-        // `version` can be a string or an integer
-        .replace(
-          '%%VERSION%%',
-          version != null &&
-          (typeof version === 'string' ||
-            Number(parseInt(version, 10)) === version)
-            ? version.toString()
-            : '',
-        )
-    );
-  }
+  // eslint-disable-next-line class-methods-use-this
   async _load(
-    query: Query = {},
-    requiredProps: RequiredContractProps,
-  ): Promise<ContractDefinition> {
-    // Provide some context for errors thrown by lower-level functions
-    const throwError = (action: string, error: any) => {
-      throw new Error(
-        `Unable to ${action} for contract ${query.contractName ||
-          query.contractAddress ||
-          ''}: ${error.message || error}`,
-      );
-    };
-
-    let response;
-    try {
-      response = await fetch(this.resolveEndpointResource(query));
-    } catch (error) {
-      throwError('fetch resource', error);
-    }
-
-    let json;
-    try {
-      json = response && response.json && (await response.json());
-    } catch (error) {
-      throwError('get JSON', error);
-    }
-
-    let contractDef = { abi: [], bytecode: '' };
-    try {
-      contractDef = this._transform(json, query, requiredProps);
-    } catch (error) {
-      throwError('transform contract definition', error);
-    }
-    return contractDef;
+    query: Query,
+    requiredProps?: RequiredContractProps, // eslint-disable-line no-unused-vars
+  ): Promise<?ContractDefinition> {
+    throw new Error(
+      'ContractLoader._load() is expected to be defined in a derived class',
+    );
   }
   async load(
     query: Query,
@@ -155,13 +100,16 @@ export default class ContractHttpLoader implements IContractLoader {
       );
 
     // Load the contract definition by either the contract name or address
-    const result = await this._load(
-      {
-        ...(contractName ? { contractName } : { contractAddress }),
-        ...otherQuery,
-      },
-      requiredProps,
-    );
+    const firstQuery = {
+      ...(contractName ? { contractName } : { contractAddress }),
+      ...otherQuery,
+    };
+    const result = await this._load(firstQuery, requiredProps);
+
+    if (result == null)
+      throw new Error(
+        `Unable to load contract definition (${JSON.stringify(firstQuery)})`,
+      );
 
     if (contractAddress) {
       // If we have a specific contractAddress, set it directly.
@@ -178,7 +126,7 @@ export default class ContractHttpLoader implements IContractLoader {
         },
         requiredProps,
       );
-      result.address = routerContract.address;
+      if (routerContract != null) result.address = routerContract.address;
     }
 
     this.constructor.validateContractDefinition(result, requiredProps);
diff --git a/packages/colony-js-contract-loader-http/src/defaults.js b/packages/colony-js-contract-loader/src/defaults.js
similarity index 100%
rename from packages/colony-js-contract-loader-http/src/defaults.js
rename to packages/colony-js-contract-loader/src/defaults.js
diff --git a/packages/colony-js-contract-loader/index.js b/packages/colony-js-contract-loader/src/index.js
similarity index 58%
rename from packages/colony-js-contract-loader/index.js
rename to packages/colony-js-contract-loader/src/index.js
index b4b684f03..982b3de5d 100644
--- a/packages/colony-js-contract-loader/index.js
+++ b/packages/colony-js-contract-loader/src/index.js
@@ -7,3 +7,6 @@ export type {
   RequiredContractProps,
   Query,
 } from './interface/ContractLoader';
+
+export { default } from './ContractLoader';
+export { default as truffleTransform } from './transforms/truffleTransform';
diff --git a/packages/colony-js-contract-loader/interface/ContractLoader.js b/packages/colony-js-contract-loader/src/interface/ContractLoader.js
similarity index 85%
rename from packages/colony-js-contract-loader/interface/ContractLoader.js
rename to packages/colony-js-contract-loader/src/interface/ContractLoader.js
index 7fea6d48c..43723e2ff 100644
--- a/packages/colony-js-contract-loader/interface/ContractLoader.js
+++ b/packages/colony-js-contract-loader/src/interface/ContractLoader.js
@@ -27,9 +27,13 @@ export type Transform = (
   requiredProps?: RequiredContractProps,
 ) => ContractDefinition;
 
+export type ConstructorArgs = {
+  transform: Transform,
+};
+
 export interface ContractLoader {
-  load(
+  _load(
     query: Query,
     requiredProps?: RequiredContractProps,
-  ): Promise<ContractDefinition>;
+  ): Promise<?ContractDefinition>;
 }
diff --git a/packages/colony-js-contract-loader/src/transforms/truffleTransform.js b/packages/colony-js-contract-loader/src/transforms/truffleTransform.js
new file mode 100644
index 000000000..80070f50a
--- /dev/null
+++ b/packages/colony-js-contract-loader/src/transforms/truffleTransform.js
@@ -0,0 +1,38 @@
+/* @flow */
+
+import type { Query } from '../interface/ContractLoader';
+
+type TruffleArtifact = {
+  abi: Array<{}>,
+  bytecode: string,
+  networks: {
+    [networkId: number]: {
+      address: string,
+    },
+  },
+};
+
+export default function truffleTransform(
+  { abi = [], bytecode, networks = {} }: TruffleArtifact = {},
+  { networkId }: Query = {},
+) {
+  let address;
+
+  const networkIds = Object.keys(networks);
+
+  if (networkId && networkIds.length) {
+    if (!networks[networkId])
+      throw new Error(`Network ID ${networkId} not found in contract`);
+    ({ address } = networks[networkId]);
+  } else {
+    // Pick the last network (assumed to be the most recent)
+    ({ address } =
+      networks[parseInt(networkIds[networkIds.length - 1], 10)] || {});
+  }
+
+  return {
+    abi,
+    address,
+    bytecode,
+  };
+}
diff --git a/packages/colony-js-utils/package.json b/packages/colony-js-utils/package.json
index d41beaeec..d41cf943e 100644
--- a/packages/colony-js-utils/package.json
+++ b/packages/colony-js-utils/package.json
@@ -55,9 +55,9 @@
         "webpack-cli": "^2.0.14"
     },
     "dependencies": {
+        "assert": "^1.4.1",
         "babel-runtime": "^6.26.0",
         "bn.js": "^4.11.6",
-        "browser-assert": "^1.2.1",
         "web3-utils": "^1.0.0-beta.34"
     },
     "engines": {
diff --git a/packages/colony-js-utils/src/checkValidAddress.js b/packages/colony-js-utils/src/checkValidAddress.js
index 9e375cc1e..69bd36e2c 100644
--- a/packages/colony-js-utils/src/checkValidAddress.js
+++ b/packages/colony-js-utils/src/checkValidAddress.js
@@ -1,6 +1,6 @@
 /* @flow */
 
-import assert from 'browser-assert';
+import assert from 'assert';
 import { isAddress } from 'web3-utils';
 import isEmptyHexString from './isEmptyHexString';
 
diff --git a/packages/colony-js-utils/src/makeAssert.js b/packages/colony-js-utils/src/makeAssert.js
index 8e4d15edd..60e976e40 100644
--- a/packages/colony-js-utils/src/makeAssert.js
+++ b/packages/colony-js-utils/src/makeAssert.js
@@ -1,6 +1,6 @@
 /* @flow */
 
-import assert from 'browser-assert';
+import assert from 'assert';
 
 /**
  * Given a message string (e.g. 'Validation failed'), return an assert function
diff --git a/yarn.lock b/yarn.lock
index 20f171305..fd6a3942f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -187,6 +187,12 @@ amdefine@>=0.0.4:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
 
+ansi-align@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-align/-/ansi-align-2.0.0.tgz#c36aeccba563b89ceb556f3690f0b1d9e3547f7f"
+  dependencies:
+    string-width "^2.0.0"
+
 ansi-escapes@^1.0.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
@@ -342,7 +348,7 @@ assert-plus@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-0.2.0.tgz#d74e1b87e7affc0db8aadb7021f3fe48101ab234"
 
-assert@^1.1.1:
+assert@^1.1.1, assert@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/assert/-/assert-1.4.1.tgz#99912d591836b5a6f5b345c0f07eefc08fc65d91"
   dependencies:
@@ -1126,7 +1132,7 @@ babylon@7.0.0-beta.44, babylon@^7.0.0-beta.30, babylon@^7.0.0-beta.40:
   version "7.0.0-beta.44"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.44.tgz#89159e15e6e30c5096e22d738d8c0af8a0e8ca1d"
 
-babylon@^6.17.3, babylon@^6.18.0:
+babylon@^6.15.0, babylon@^6.17.3, babylon@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
 
@@ -1225,6 +1231,18 @@ boom@5.x.x:
   dependencies:
     hoek "4.x.x"
 
+boxen@^1.2.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/boxen/-/boxen-1.3.0.tgz#55c6c39a8ba58d9c61ad22cd877532deb665a20b"
+  dependencies:
+    ansi-align "^2.0.0"
+    camelcase "^4.0.0"
+    chalk "^2.0.1"
+    cli-boxes "^1.0.0"
+    string-width "^2.0.0"
+    term-size "^1.2.0"
+    widest-line "^2.0.0"
+
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -1259,10 +1277,6 @@ brorand@^1.0.1:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
 
-browser-assert@^1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/browser-assert/-/browser-assert-1.2.1.tgz#9aaa5a2a8c74685c2ae05bfe46efd606f068c200"
-
 browser-process-hrtime@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-0.1.2.tgz#425d68a58d3447f02a04aa894187fce8af8b7b8e"
@@ -1467,7 +1481,7 @@ camelcase@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-2.1.1.tgz#7c1d16d679a1bbe59ca02cacecfb011e201f5a1f"
 
-camelcase@^4.1.0:
+camelcase@^4.0.0, camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
@@ -1585,6 +1599,10 @@ class-utils@^0.3.5:
     isobject "^3.0.0"
     static-extend "^0.1.1"
 
+cli-boxes@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/cli-boxes/-/cli-boxes-1.0.0.tgz#4fa917c3e59c94a004cd61f8ee509da651687143"
+
 cli-cursor@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-1.0.2.tgz#64da3f7d56a54412e59794bd62dc35295e8f2987"
@@ -1773,6 +1791,17 @@ concat-stream@^1.4.10, concat-stream@^1.5.0, concat-stream@^1.6.0:
     readable-stream "^2.2.2"
     typedarray "^0.0.6"
 
+configstore@^3.0.0:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/configstore/-/configstore-3.1.2.tgz#c6f25defaeef26df12dd33414b001fe81a543f8f"
+  dependencies:
+    dot-prop "^4.1.0"
+    graceful-fs "^4.1.2"
+    make-dir "^1.0.0"
+    unique-string "^1.0.0"
+    write-file-atomic "^2.0.0"
+    xdg-basedir "^3.0.0"
+
 console-browserify@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-browserify/-/console-browserify-1.1.0.tgz#f0241c45730a9fc6323b206dbf38edc741d0bb10"
@@ -2080,6 +2109,10 @@ crypto-browserify@^3.11.0:
     randombytes "^2.0.0"
     randomfill "^1.0.3"
 
+crypto-random-string@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/crypto-random-string/-/crypto-random-string-1.0.0.tgz#a230f64f568310e1498009940790ec99545bca7e"
+
 cssom@0.3.x, "cssom@>= 0.3.2 < 0.4.0":
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.2.tgz#b8036170c79f07a90ff2f16e22284027a243848b"
@@ -2325,11 +2358,17 @@ dot-prop@^3.0.0:
   dependencies:
     is-obj "^1.0.0"
 
+dot-prop@^4.1.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-4.2.0.tgz#1f19e0c2e1aa0e32797c49799f2837ac6af69c57"
+  dependencies:
+    is-obj "^1.0.0"
+
 duplexer3@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/duplexer3/-/duplexer3-0.1.4.tgz#ee01dd1cac0ed3cbc7fdbea37dc0a8f1ce002ce2"
 
-duplexer@^0.1.1:
+duplexer@^0.1.1, duplexer@~0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
 
@@ -2674,6 +2713,18 @@ ethjs-unit@0.1.6:
     bn.js "4.11.6"
     number-to-bn "1.7.0"
 
+event-stream@~3.3.0:
+  version "3.3.4"
+  resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
+  dependencies:
+    duplexer "~0.1.1"
+    from "~0"
+    map-stream "~0.1.0"
+    pause-stream "0.0.11"
+    split "0.3"
+    stream-combiner "~0.0.4"
+    through "~2.3.1"
+
 events@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/events/-/events-1.1.1.tgz#9ebdb7635ad099c70dcc4c2a1f5004288e8bd924"
@@ -2983,6 +3034,10 @@ flow-bin@^0.72.0:
   version "0.72.0"
   resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.72.0.tgz#12051180fb2db7ccb728fefe67c77e955e92a44d"
 
+flow-bin@^0.73.0:
+  version "0.73.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.73.0.tgz#da1b90a02b0ef9c439f068c2fc14968db83be425"
+
 flow-copy-source@^1.2.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/flow-copy-source/-/flow-copy-source-1.3.0.tgz#591b153f5c01e8fc566c64a97290ea9103b7f1ea"
@@ -2993,6 +3048,16 @@ flow-copy-source@^1.2.1:
     kefir "^3.7.3"
     yargs "^11.0.0"
 
+flow-copy-source@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/flow-copy-source/-/flow-copy-source-2.0.0.tgz#e0984a434fefb5995571d7a28cbff8c3cdda63fe"
+  dependencies:
+    chokidar "^2.0.0"
+    fs-extra "^6.0.1"
+    glob "^7.0.0"
+    kefir "^3.7.3"
+    yargs "^11.0.0"
+
 flow-parser@^0.*:
   version "0.69.0"
   resolved "https://registry.yarnpkg.com/flow-parser/-/flow-parser-0.69.0.tgz#378b5128d6d0b554a8b2f16a4ca3e1ab9649f00e"
@@ -3001,6 +3066,13 @@ flow-parser@^0.73.0:
   version "0.73.0"
   resolved "https://registry.yarnpkg.com/flow-parser/-/flow-parser-0.73.0.tgz#525ac0776f743e16b6dca1a3dd6c602260b15773"
 
+flow-remove-types@^1.2.3:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/flow-remove-types/-/flow-remove-types-1.2.3.tgz#6131aefc7da43364bb8b479758c9dec7735d1a18"
+  dependencies:
+    babylon "^6.15.0"
+    vlq "^0.2.1"
+
 flush-write-stream@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/flush-write-stream/-/flush-write-stream-1.0.3.tgz#c5d586ef38af6097650b49bc41b55fabb19f35bd"
@@ -3069,6 +3141,10 @@ from2@^2.1.0, from2@^2.1.1:
     inherits "^2.0.1"
     readable-stream "^2.0.0"
 
+from@~0:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/from/-/from-0.1.7.tgz#83c60afc58b9c56997007ed1a768b3ab303a44fe"
+
 fs-extra@^4.0.1:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.3.tgz#0d852122e5bc5beb453fb028e9c0c9bf36340c94"
@@ -3085,6 +3161,14 @@ fs-extra@^5.0.0:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
+fs-extra@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-6.0.1.tgz#8abc128f7946e310135ddc93b98bddb410e7a34b"
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 fs-readdir-recursive@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/fs-readdir-recursive/-/fs-readdir-recursive-1.1.0.tgz#e32fc030a2ccee44a6b5371308da54be0b397d27"
@@ -3272,6 +3356,12 @@ glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+global-dirs@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/global-dirs/-/global-dirs-0.1.1.tgz#b319c0dd4607f353f3be9cca4c72fc148c49f445"
+  dependencies:
+    ini "^1.3.4"
+
 global-modules@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/global-modules/-/global-modules-1.0.0.tgz#6d770f0eb523ac78164d72b5e71a8877265cc3ea"
@@ -3639,10 +3729,18 @@ iferr@^0.1.5:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/iferr/-/iferr-0.1.5.tgz#c60eed69e6d8fdb6b3104a1fcbca1c192dc5b501"
 
+ignore-by-default@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/ignore-by-default/-/ignore-by-default-1.0.1.tgz#48ca6d72f6c6a3af00a9ad4ae6876be3889e2b09"
+
 ignore@^3.3.3:
   version "3.3.7"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.7.tgz#612289bfb3c220e186a58118618d5be8c1bab021"
 
+import-lazy@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/import-lazy/-/import-lazy-2.1.0.tgz#05698e3d45c88e8d7e9d92cb0584e77f096f3e43"
+
 import-local@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/import-local/-/import-local-1.0.0.tgz#5e4ffdc03f4fe6c009c6729beb29631c2f8227bc"
@@ -3901,6 +3999,17 @@ is-hex-prefixed@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-hex-prefixed/-/is-hex-prefixed-1.0.0.tgz#7d8d37e6ad77e5d127148913c573e082d777f554"
 
+is-installed-globally@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/is-installed-globally/-/is-installed-globally-0.1.0.tgz#0dfd98f5a9111716dd535dda6492f67bf3d25a80"
+  dependencies:
+    global-dirs "^0.1.0"
+    is-path-inside "^1.0.0"
+
+is-npm@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-npm/-/is-npm-1.0.0.tgz#f2fb63a65e4905b406c86072765a1a4dc793b9f4"
+
 is-number@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/is-number/-/is-number-2.1.0.tgz#01fcbbb393463a548f2f466cce16dece49db908f"
@@ -4639,6 +4748,12 @@ kind-of@^6.0.0, kind-of@^6.0.2:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
 
+latest-version@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/latest-version/-/latest-version-3.1.0.tgz#a205383fea322b33b5ae3b18abee0dc2f356ee15"
+  dependencies:
+    package-json "^4.0.0"
+
 lazy-cache@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/lazy-cache/-/lazy-cache-1.0.4.tgz#a1d78fc3a50474cb80845d3b3b6e1da49a446e8e"
@@ -4936,6 +5051,10 @@ map-obj@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/map-obj/-/map-obj-2.0.0.tgz#a65cd29087a92598b8791257a523e021222ac1f9"
 
+map-stream@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/map-stream/-/map-stream-0.1.0.tgz#e56aa94c4c8055a16404a0674b78f215f7c8e194"
+
 map-visit@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/map-visit/-/map-visit-1.0.0.tgz#ecdca8f13144e660f1b5bd41f12f3479d98dfb8f"
@@ -5317,6 +5436,21 @@ node-pre-gyp@^0.6.39:
     tar "^2.2.1"
     tar-pack "^3.4.0"
 
+nodemon@^1.17.5:
+  version "1.17.5"
+  resolved "https://registry.yarnpkg.com/nodemon/-/nodemon-1.17.5.tgz#e6a665c872fdf09d48bf2a81f3e85f8cfb39322a"
+  dependencies:
+    chokidar "^2.0.2"
+    debug "^3.1.0"
+    ignore-by-default "^1.0.1"
+    minimatch "^3.0.4"
+    pstree.remy "^1.1.0"
+    semver "^5.5.0"
+    supports-color "^5.2.0"
+    touch "^3.1.0"
+    undefsafe "^2.0.2"
+    update-notifier "^2.3.0"
+
 nomnom@^1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/nomnom/-/nomnom-1.8.1.tgz#2151f722472ba79e50a76fc125bb8c8f2e4dc2a7"
@@ -5331,6 +5465,12 @@ nopt@^4.0.1:
     abbrev "1"
     osenv "^0.1.4"
 
+nopt@~1.0.10:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-1.0.10.tgz#6ddd21bd2a31417b92727dd585f8a6f37608ebee"
+  dependencies:
+    abbrev "1"
+
 normalize-package-data@^2.3.0, normalize-package-data@^2.3.2, normalize-package-data@^2.3.4, normalize-package-data@^2.3.5:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.4.0.tgz#12f95a307d58352075a04907b84ac8be98ac012f"
@@ -5594,7 +5734,7 @@ p-try@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
 
-package-json@^4.0.1:
+package-json@^4.0.0, package-json@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/package-json/-/package-json-4.0.1.tgz#8869a0401253661c4c4ca3da6c2121ed555f5eed"
   dependencies:
@@ -5732,6 +5872,12 @@ path-type@^3.0.0:
   dependencies:
     pify "^3.0.0"
 
+pause-stream@0.0.11:
+  version "0.0.11"
+  resolved "https://registry.yarnpkg.com/pause-stream/-/pause-stream-0.0.11.tgz#fe5a34b0cbce12b5aa6a2b403ee2e73b602f1445"
+  dependencies:
+    through "~2.3"
+
 pbkdf2@^3.0.3:
   version "3.0.14"
   resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.14.tgz#a35e13c64799b06ce15320f459c230e68e73bade"
@@ -5865,10 +6011,22 @@ prr@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
 
+ps-tree@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/ps-tree/-/ps-tree-1.1.0.tgz#b421b24140d6203f1ed3c76996b4427b08e8c014"
+  dependencies:
+    event-stream "~3.3.0"
+
 pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
 
+pstree.remy@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/pstree.remy/-/pstree.remy-1.1.0.tgz#f2af27265bd3e5b32bbfcc10e80bac55ba78688b"
+  dependencies:
+    ps-tree "^1.1.0"
+
 public-encrypt@^4.0.0:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.2.tgz#46eb9107206bf73489f8b85b69d91334c6610994"
@@ -6446,7 +6604,13 @@ scrypt-js@2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.3.tgz#bb0040be03043da9a012a2cea9fc9f852cfc87d4"
 
-"semver@2 || 3 || 4 || 5", semver@^5.1.0, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0:
+semver-diff@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/semver-diff/-/semver-diff-2.1.0.tgz#4bbb8437c8d37e4b0cf1a68fd726ec6d645d6d36"
+  dependencies:
+    semver "^5.0.3"
+
+"semver@2 || 3 || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
 
@@ -6741,6 +6905,12 @@ split2@^2.0.0:
   dependencies:
     through2 "^2.0.2"
 
+split@0.3:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/split/-/split-0.3.3.tgz#cd0eea5e63a211dfff7eb0f091c4133e2d0dd28f"
+  dependencies:
+    through "2"
+
 split@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/split/-/split-1.0.1.tgz#605bd9be303aa59fb35f9229fbea0ddec9ea07d9"
@@ -6805,6 +6975,12 @@ stream-browserify@^2.0.1:
     inherits "~2.0.1"
     readable-stream "^2.0.2"
 
+stream-combiner@~0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/stream-combiner/-/stream-combiner-0.0.4.tgz#4d5e433c185261dde623ca3f44c586bcf5c4ad14"
+  dependencies:
+    duplexer "~0.1.1"
+
 stream-each@^1.1.0:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/stream-each/-/stream-each-1.2.2.tgz#8e8c463f91da8991778765873fe4d960d8f616bd"
@@ -6957,6 +7133,12 @@ supports-color@^3.1.2:
   dependencies:
     has-flag "^1.0.0"
 
+supports-color@^5.2.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+  dependencies:
+    has-flag "^3.0.0"
+
 supports-color@^5.3.0:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.3.0.tgz#5b24ac15db80fa927cf5227a4a33fd3c4c7676c0"
@@ -7044,6 +7226,12 @@ tempfile@^1.1.1:
     os-tmpdir "^1.0.0"
     uuid "^2.0.1"
 
+term-size@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/term-size/-/term-size-1.2.0.tgz#458b83887f288fc56d6fffbfad262e26638efa69"
+  dependencies:
+    execa "^0.7.0"
+
 test-exclude@^4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.2.1.tgz#dfa222f03480bca69207ca728b37d74b45f724fa"
@@ -7077,7 +7265,7 @@ through2@^2.0.0, through2@^2.0.2:
     readable-stream "^2.1.5"
     xtend "~4.0.1"
 
-through@2, "through@>=2.2.7 <3", through@^2.3.4, through@^2.3.6:
+through@2, "through@>=2.2.7 <3", through@^2.3.4, through@^2.3.6, through@~2.3, through@~2.3.1:
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
 
@@ -7135,6 +7323,12 @@ to-regex@^3.0.1, to-regex@^3.0.2:
     regex-not "^1.0.2"
     safe-regex "^1.1.0"
 
+touch@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/touch/-/touch-3.1.0.tgz#fe365f5f75ec9ed4e56825e0bb76d24ab74af83b"
+  dependencies:
+    nopt "~1.0.10"
+
 tough-cookie@>=2.3.3, tough-cookie@^2.3.3, tough-cookie@~2.3.0, tough-cookie@~2.3.3:
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.4.tgz#ec60cee38ac675063ffc97a5c18970578ee83655"
@@ -7239,6 +7433,12 @@ ultron@~1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.1.tgz#9fe1536a10a664a65266a1e3ccf85fd36302bc9c"
 
+undefsafe@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.2.tgz#225f6b9e0337663e0d8e7cfd686fc2836ccace76"
+  dependencies:
+    debug "^2.2.0"
+
 underscore@1.8.3:
   version "1.8.3"
   resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.8.3.tgz#4f3fb53b106e6097fcf9cb4109f2a5e9bdfa5022"
@@ -7268,6 +7468,12 @@ unique-slug@^2.0.0:
   dependencies:
     imurmurhash "^0.1.4"
 
+unique-string@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unique-string/-/unique-string-1.0.0.tgz#9e1057cca851abb93398f8b33ae187b99caec11a"
+  dependencies:
+    crypto-random-string "^1.0.0"
+
 universalify@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.1.tgz#fa71badd4437af4c148841e3b3b165f9e9e590b7"
@@ -7295,6 +7501,21 @@ upath@^1.0.0:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/upath/-/upath-1.0.4.tgz#ee2321ba0a786c50973db043a50b7bcba822361d"
 
+update-notifier@^2.3.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/update-notifier/-/update-notifier-2.5.0.tgz#d0744593e13f161e406acb1d9408b72cad08aff6"
+  dependencies:
+    boxen "^1.2.1"
+    chalk "^2.0.1"
+    configstore "^3.0.0"
+    import-lazy "^2.1.0"
+    is-ci "^1.0.10"
+    is-installed-globally "^0.1.0"
+    is-npm "^1.0.0"
+    latest-version "^3.0.0"
+    semver-diff "^2.0.0"
+    xdg-basedir "^3.0.0"
+
 uri-js@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-3.0.2.tgz#f90b858507f81dea4dcfbb3c4c3dbfa2b557faaa"
@@ -7438,6 +7659,10 @@ vinyl@^2.0.1:
     remove-trailing-separator "^1.0.1"
     replace-ext "^1.0.0"
 
+vlq@^0.2.1:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/vlq/-/vlq-0.2.3.tgz#8f3e4328cf63b1540c0d67e1b2778386f8975b26"
+
 vm-browserify@0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/vm-browserify/-/vm-browserify-0.0.4.tgz#5d7ea45bbef9e4a6ff65f95438e0a87c357d5a73"
@@ -7599,6 +7824,12 @@ wide-align@^1.1.0:
   dependencies:
     string-width "^1.0.2"
 
+widest-line@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/widest-line/-/widest-line-2.0.0.tgz#0142a4e8a243f8882c0233aa0e0281aa76152273"
+  dependencies:
+    string-width "^2.1.1"
+
 window-size@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.0.tgz#5438cd2ea93b202efa3a19fe8887aee7c94f9c9d"
@@ -7687,6 +7918,10 @@ ws@^4.0.0:
     async-limiter "~1.0.0"
     safe-buffer "~5.1.0"
 
+xdg-basedir@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-3.0.0.tgz#496b2cc109eca8dbacfe2dc72b603c17c5870ad4"
+
 xhr-request-promise@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/xhr-request-promise/-/xhr-request-promise-0.1.2.tgz#343c44d1ee7726b8648069682d0f840c83b4261d"