Merge branch 'development' into feature/portal-ledger-support

* development: (437 commits)
  Publish
  Update yarn.lock
  Update the CHANGELOG
  Fix the bug making it impossible to specify the custom ZRX address
  Fix fill/cancel order by looking for NoError instead of empty blockchainErr given the BlockchainErrs type refactor
  Add a comment about a yarn bug
  Add our mainnet and kovan nodes as backups for Portal requests
  Fix bug hiding the user info from topBar
  Add dev-utils package to top level README
  Prettier newline
  Prettier
  Allow Token symbols to be alphanumeric
  Update CHANGELOG, rebase on development
  Should not -> cannot
  Reject negative amounts in isValidBaseUnitAmount
  Re-add changelog for 0x.js
  Fix prettier
  Update yarn.lock
  Move tests to a separate folder
  Change file layout
  ...

# Conflicts:
#	packages/website/README.md

28 files changed, 265 insertions, 354 deletions

diff --git a/packages/json-schemas/CHANGELOG.md b/packages/json-schemas/CHANGELOG.md
index 9f080adeb..28f38acc5 100644
--- a/packages/json-schemas/CHANGELOG.md
+++ b/packages/json-schemas/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
-v0.6.7 - _Nov. 14, 2017_
-------------------------
+## v0.7.0 - _December 20, 2017_
+
+    * Rename `subscriptionOptsSchema` to `blockRangeSchema` (#272)
+
+## v0.6.7 - _November 14, 2017_
+
     * Re-publish JSON-schema previously published under NPM package 0x-json-schemas
diff --git a/packages/json-schemas/README.md b/packages/json-schemas/README.md
index d89f57a5e..9166f50c1 100644
--- a/packages/json-schemas/README.md
+++ b/packages/json-schemas/README.md
@@ -1,16 +1,16 @@
-json-schemas
-------------
+## @0xproject/json-schemas
 
 Contains 0x-related json schemas
 
-## Install:
+## Installation
 
 ```bash
-npm install @0xproject/json-schemas --save
+yarn add @0xproject/json-schemas
 ```
 
-## Usage:
-```
+## Usage
+
+```javascript
 import {SchemaValidator, ValidatorResult, schemas} from '@0xproject/json-schemas';
 
 const {orderSchema} = schemas;
@@ -22,3 +22,41 @@ const order = {
 const validatorResult: ValidatorResult = validator.validate(order, orderSchema); // Contains all errors
 const isValid: boolean = validator.isValid(order, orderSchema); // Only returns boolean
 ```
+
+## Contributing
+
+We strongly encourage that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install Dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+```bash
+yarn build
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index 52deb2254..4b500eab3 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -1,46 +1,45 @@
 {
-  "name": "@0xproject/json-schemas",
-  "version": "0.6.9",
-  "description": "0x-related json schemas",
-  "main": "lib/src/index.js",
-  "types": "lib/src/index.d.ts",
-  "scripts": {
-    "lint": "tslint --project . 'src/**/*.ts' 'test/**/*.ts'",
-    "test": "run-s clean build run_mocha",
-    "test:circleci": "yarn test",
-    "run_mocha": "mocha lib/test/**/*_test.js",
-    "clean": "shx rm -rf _bundles lib test_temp",
-    "build": "tsc"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/0xProject/0x.js.git"
-  },
-  "author": "",
-  "license": "Apache-2.0",
-  "bugs": {
-    "url": "https://github.com/0xProject/0x.js/issues"
-  },
-  "homepage": "https://github.com/0xProject/0x.js/packages/json-schemas/README.md",
-  "dependencies": {
-    "jsonschema": "^1.2.0",
-    "lodash.values": "^4.3.0"
-  },
-  "devDependencies": {
-    "@0xproject/tslint-config": "^0.2.0",
-    "@0xproject/utils": "^0.0.1",
-    "@types/lodash.foreach": "^4.5.3",
-    "@types/lodash.values": "^4.3.3",
-    "@types/mocha": "^2.2.42",
-    "bignumber.js": "~4.1.0",
-    "chai": "^4.0.1",
-    "chai-typescript-typings": "^0.0.1",
-    "dirty-chai": "^2.0.1",
-    "lodash.foreach": "^4.5.0",
-    "mocha": "^4.0.1",
-    "npm-run-all": "^4.1.2",
-    "shx": "^0.2.2",
-    "tslint": "5.8.0",
-    "typescript": "~2.6.1"
-  }
+    "name": "@0xproject/json-schemas",
+    "version": "0.7.4",
+    "description": "0x-related json schemas",
+    "main": "lib/src/index.js",
+    "types": "lib/src/index.d.ts",
+    "scripts": {
+        "lint": "tslint --project . 'src/**/*.ts' 'test/**/*.ts'",
+        "test": "run-s clean build run_mocha",
+        "test:circleci": "yarn test",
+        "run_mocha": "mocha lib/test/**/*_test.js",
+        "clean": "shx rm -rf _bundles lib test_temp",
+        "build": "tsc"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/0x.js.git"
+    },
+    "author": "",
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/0x.js/issues"
+    },
+    "homepage": "https://github.com/0xProject/0x.js/packages/json-schemas/README.md",
+    "dependencies": {
+        "jsonschema": "^1.2.0",
+        "lodash.values": "^4.3.0"
+    },
+    "devDependencies": {
+        "@0xproject/tslint-config": "^0.4.3",
+        "@0xproject/utils": "^0.2.1",
+        "@types/lodash.foreach": "^4.5.3",
+        "@types/lodash.values": "^4.3.3",
+        "@types/mocha": "^2.2.42",
+        "chai": "^4.0.1",
+        "chai-typescript-typings": "^0.0.2",
+        "dirty-chai": "^2.0.1",
+        "lodash.foreach": "^4.5.0",
+        "mocha": "^4.0.1",
+        "npm-run-all": "^4.1.2",
+        "shx": "^0.2.2",
+        "tslint": "5.8.0",
+        "typescript": "~2.6.1"
+    }
 }
diff --git a/packages/json-schemas/schemas/subscription_opts_schema.ts b/packages/json-schemas/schemas/block_range_schema.ts
index a476e6963..1f6a63151 100644
--- a/packages/json-schemas/schemas/subscription_opts_schema.ts
+++ b/packages/json-schemas/schemas/block_range_schema.ts
@@ -10,11 +10,11 @@ export const blockParamSchema = {
     ],
 };
 
-export const subscriptionOptsSchema = {
-    id: '/SubscriptionOpts',
+export const blockRangeSchema = {
+    id: '/BlockRange',
     properties: {
-        fromBlock: {$ref: '/BlockParam'},
-        toBlock: {$ref: '/BlockParam'},
+        fromBlock: { $ref: '/BlockParam' },
+        toBlock: { $ref: '/BlockParam' },
     },
     type: 'object',
 };
diff --git a/packages/json-schemas/schemas/ec_signature_schema.ts b/packages/json-schemas/schemas/ec_signature_schema.ts
index 2b769f3b6..71b840dd8 100644
--- a/packages/json-schemas/schemas/ec_signature_schema.ts
+++ b/packages/json-schemas/schemas/ec_signature_schema.ts
@@ -12,8 +12,8 @@ export const ecSignatureSchema = {
             minimum: 27,
             maximum: 28,
         },
-        r: {$ref: '/ECSignatureParameter'},
-        s: {$ref: '/ECSignatureParameter'},
+        r: { $ref: '/ECSignatureParameter' },
+        s: { $ref: '/ECSignatureParameter' },
     },
     required: ['v', 'r', 's'],
     type: 'object',
diff --git a/packages/json-schemas/schemas/index_filter_values_schema.ts b/packages/json-schemas/schemas/index_filter_values_schema.ts
index f7e323e45..3374d63e0 100644
--- a/packages/json-schemas/schemas/index_filter_values_schema.ts
+++ b/packages/json-schemas/schemas/index_filter_values_schema.ts
@@ -1,11 +1,7 @@
 export const indexFilterValuesSchema = {
     id: '/IndexFilterValues',
     additionalProperties: {
-        oneOf: [
-            {$ref: '/Number'},
-            {$ref: '/Address'},
-            {$ref: '/OrderHashSchema'},
-        ],
+        oneOf: [{ $ref: '/Number' }, { $ref: '/Address' }, { $ref: '/OrderHashSchema' }],
     },
     type: 'object',
 };
diff --git a/packages/json-schemas/schemas/order_cancel_schema.ts b/packages/json-schemas/schemas/order_cancel_schema.ts
index ac7d2ee20..ad23d01cc 100644
--- a/packages/json-schemas/schemas/order_cancel_schema.ts
+++ b/packages/json-schemas/schemas/order_cancel_schema.ts
@@ -3,8 +3,8 @@ export const orderCancellationRequestsSchema = {
     type: 'array',
     items: {
         properties: {
-            order: {$ref: '/Order'},
-            takerTokenCancelAmount: {$ref: '/Number'},
+            order: { $ref: '/Order' },
+            takerTokenCancelAmount: { $ref: '/Number' },
         },
         required: ['order', 'takerTokenCancelAmount'],
         type: 'object',
diff --git a/packages/json-schemas/schemas/order_fill_or_kill_requests_schema.ts b/packages/json-schemas/schemas/order_fill_or_kill_requests_schema.ts
index 4ef7b069a..61f2c8849 100644
--- a/packages/json-schemas/schemas/order_fill_or_kill_requests_schema.ts
+++ b/packages/json-schemas/schemas/order_fill_or_kill_requests_schema.ts
@@ -3,8 +3,8 @@ export const orderFillOrKillRequestsSchema = {
     type: 'array',
     items: {
         properties: {
-            signedOrder: {$ref: '/SignedOrder'},
-            fillTakerAmount: {$ref: '/Number'},
+            signedOrder: { $ref: '/SignedOrder' },
+            fillTakerAmount: { $ref: '/Number' },
         },
         required: ['signedOrder', 'fillTakerAmount'],
         type: 'object',
diff --git a/packages/json-schemas/schemas/order_fill_requests_schema.ts b/packages/json-schemas/schemas/order_fill_requests_schema.ts
index ec19dd9f8..419d0670f 100644
--- a/packages/json-schemas/schemas/order_fill_requests_schema.ts
+++ b/packages/json-schemas/schemas/order_fill_requests_schema.ts
@@ -3,8 +3,8 @@ export const orderFillRequestsSchema = {
     type: 'array',
     items: {
         properties: {
-            signedOrder: {$ref: '/SignedOrder'},
-            takerTokenFillAmount: {$ref: '/Number'},
+            signedOrder: { $ref: '/SignedOrder' },
+            takerTokenFillAmount: { $ref: '/Number' },
         },
         required: ['signedOrder', 'takerTokenFillAmount'],
         type: 'object',
diff --git a/packages/json-schemas/schemas/order_schemas.ts b/packages/json-schemas/schemas/order_schemas.ts
index 3cce49351..6f17224ad 100644
--- a/packages/json-schemas/schemas/order_schemas.ts
+++ b/packages/json-schemas/schemas/order_schemas.ts
@@ -1,22 +1,30 @@
 export const orderSchema = {
     id: '/Order',
     properties: {
-        maker: {$ref: '/Address'},
-        taker: {$ref: '/Address'},
-        makerFee: {$ref: '/Number'},
-        takerFee: {$ref: '/Number'},
-        makerTokenAmount: {$ref: '/Number'},
-        takerTokenAmount: {$ref: '/Number'},
-        makerTokenAddress: {$ref: '/Address'},
-        takerTokenAddress: {$ref: '/Address'},
-        salt: {$ref: '/Number'},
-        feeRecipient: {$ref: '/Address'},
-        expirationUnixTimestampSec: {$ref: '/Number'},
-        exchangeContractAddress: {$ref: '/Address'},
+        maker: { $ref: '/Address' },
+        taker: { $ref: '/Address' },
+        makerFee: { $ref: '/Number' },
+        takerFee: { $ref: '/Number' },
+        makerTokenAmount: { $ref: '/Number' },
+        takerTokenAmount: { $ref: '/Number' },
+        makerTokenAddress: { $ref: '/Address' },
+        takerTokenAddress: { $ref: '/Address' },
+        salt: { $ref: '/Number' },
+        feeRecipient: { $ref: '/Address' },
+        expirationUnixTimestampSec: { $ref: '/Number' },
+        exchangeContractAddress: { $ref: '/Address' },
     },
     required: [
-        'maker', 'taker', 'makerFee', 'takerFee', 'makerTokenAmount', 'takerTokenAmount',
-        'salt', 'feeRecipient', 'expirationUnixTimestampSec', 'exchangeContractAddress',
+        'maker',
+        'taker',
+        'makerFee',
+        'takerFee',
+        'makerTokenAmount',
+        'takerTokenAmount',
+        'salt',
+        'feeRecipient',
+        'expirationUnixTimestampSec',
+        'exchangeContractAddress',
     ],
     type: 'object',
 };
@@ -27,7 +35,7 @@ export const signedOrderSchema = {
         { $ref: '/Order' },
         {
             properties: {
-                ecSignature: {$ref: '/ECSignature'},
+                ecSignature: { $ref: '/ECSignature' },
             },
             required: ['ecSignature'],
         },
diff --git a/packages/json-schemas/schemas/relayer_api_error_response_schema.ts b/packages/json-schemas/schemas/relayer_api_error_response_schema.ts
index eacbb2bce..27fdb166f 100644
--- a/packages/json-schemas/schemas/relayer_api_error_response_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_error_response_schema.ts
@@ -2,16 +2,16 @@ export const relayerApiErrorResponseSchema = {
     id: '/RelayerApiErrorResponse',
     type: 'object',
     properties: {
-        code: {type: 'number'},
-        reason: {type: 'string'},
+        code: { type: 'number' },
+        reason: { type: 'string' },
         validationErrors: {
             type: 'array',
             items: {
                 type: 'object',
                 properties: {
-                    field: {type: 'string'},
-                    code: {type: 'number'},
-                    reason: {type: 'string'},
+                    field: { type: 'string' },
+                    code: { type: 'number' },
+                    reason: { type: 'string' },
                 },
                 required: ['field', 'code', 'reason'],
             },
diff --git a/packages/json-schemas/schemas/relayer_api_fees_payload_schema.ts b/packages/json-schemas/schemas/relayer_api_fees_payload_schema.ts
index 645660844..eaaf777a1 100644
--- a/packages/json-schemas/schemas/relayer_api_fees_payload_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_fees_payload_schema.ts
@@ -2,18 +2,23 @@ export const relayerApiFeesPayloadSchema = {
     id: '/RelayerApiFeesPayload',
     type: 'object',
     properties: {
-        exchangeContractAddress: {$ref: '/Address'},
-        maker: {$ref: '/Address'},
-        taker: {$ref: '/Address'},
-        makerTokenAddress: {$ref: '/Address'},
-        takerTokenAddress: {$ref: '/Address'},
-        makerTokenAmount: {$ref: '/Number'},
-        takerTokenAmount: {$ref: '/Number'},
-        expirationUnixTimestampSec: {$ref: '/Number'},
-        salt: {$ref: '/Number'},
+        exchangeContractAddress: { $ref: '/Address' },
+        maker: { $ref: '/Address' },
+        taker: { $ref: '/Address' },
+        makerTokenAddress: { $ref: '/Address' },
+        takerTokenAddress: { $ref: '/Address' },
+        makerTokenAmount: { $ref: '/Number' },
+        takerTokenAmount: { $ref: '/Number' },
+        expirationUnixTimestampSec: { $ref: '/Number' },
+        salt: { $ref: '/Number' },
     },
     required: [
-        'exchangeContractAddress', 'maker', 'taker', 'makerTokenAddress', 'takerTokenAddress',
-        'expirationUnixTimestampSec', 'salt',
+        'exchangeContractAddress',
+        'maker',
+        'taker',
+        'makerTokenAddress',
+        'takerTokenAddress',
+        'expirationUnixTimestampSec',
+        'salt',
     ],
 };
diff --git a/packages/json-schemas/schemas/relayer_api_fees_response_schema.ts b/packages/json-schemas/schemas/relayer_api_fees_response_schema.ts
index 86e51feb0..e7440613f 100644
--- a/packages/json-schemas/schemas/relayer_api_fees_response_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_fees_response_schema.ts
@@ -2,9 +2,9 @@ export const relayerApiFeesResponseSchema = {
     id: '/RelayerApiFeesResponse',
     type: 'object',
     properties: {
-        makerFee: {$ref: '/Number'},
-        takerFee: {$ref: '/Number'},
-        feeRecipient: {$ref: '/Address'},
+        makerFee: { $ref: '/Number' },
+        takerFee: { $ref: '/Number' },
+        feeRecipient: { $ref: '/Address' },
     },
     required: ['makerFee', 'takerFee', 'feeRecipient'],
 };
diff --git a/packages/json-schemas/schemas/relayer_api_orberbook_channel_subscribe_schema.ts b/packages/json-schemas/schemas/relayer_api_orberbook_channel_subscribe_schema.ts
index 2f71531c6..d93fa73d6 100644
--- a/packages/json-schemas/schemas/relayer_api_orberbook_channel_subscribe_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_orberbook_channel_subscribe_schema.ts
@@ -2,10 +2,10 @@ export const relayerApiOrderbookChannelSubscribeSchema = {
     id: '/RelayerApiOrderbookChannelSubscribe',
     type: 'object',
     properties: {
-        type: {enum: ['subscribe']},
-        channel: {enum: ['orderbook']},
-        requestId: {type: 'number'},
-        payload: {$ref: '/RelayerApiOrderbookChannelSubscribePayload'},
+        type: { enum: ['subscribe'] },
+        channel: { enum: ['orderbook'] },
+        requestId: { type: 'number' },
+        payload: { $ref: '/RelayerApiOrderbookChannelSubscribePayload' },
     },
     required: ['type', 'channel', 'requestId', 'payload'],
 };
@@ -14,10 +14,10 @@ export const relayerApiOrderbookChannelSubscribePayload = {
     id: '/RelayerApiOrderbookChannelSubscribePayload',
     type: 'object',
     properties: {
-        baseTokenAddress: {$ref: '/Address'},
-        quoteTokenAddress: {$ref: '/Address'},
-        snapshot: {type: 'boolean'},
-        limit: {type: 'number'},
+        baseTokenAddress: { $ref: '/Address' },
+        quoteTokenAddress: { $ref: '/Address' },
+        snapshot: { type: 'boolean' },
+        limit: { type: 'number' },
     },
     required: ['baseTokenAddress', 'quoteTokenAddress'],
 };
diff --git a/packages/json-schemas/schemas/relayer_api_orderbook_channel_snapshot_schema.ts b/packages/json-schemas/schemas/relayer_api_orderbook_channel_snapshot_schema.ts
index 99037865e..fe1510d5b 100644
--- a/packages/json-schemas/schemas/relayer_api_orderbook_channel_snapshot_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_orderbook_channel_snapshot_schema.ts
@@ -2,10 +2,10 @@ export const relayerApiOrderbookChannelSnapshotSchema = {
     id: '/RelayerApiOrderbookChannelSnapshot',
     type: 'object',
     properties: {
-        type: {enum: ['snapshot']},
-        channel: {enum: ['orderbook']},
-        requestId: {type: 'number'},
-        payload: {$ref: '/RelayerApiOrderbookChannelSnapshotPayload'},
+        type: { enum: ['snapshot'] },
+        channel: { enum: ['orderbook'] },
+        requestId: { type: 'number' },
+        payload: { $ref: '/RelayerApiOrderbookChannelSnapshotPayload' },
     },
     required: ['type', 'channel', 'requestId', 'payload'],
 };
@@ -14,8 +14,8 @@ export const relayerApiOrderbookChannelSnapshotPayload = {
     id: '/RelayerApiOrderbookChannelSnapshotPayload',
     type: 'object',
     properties: {
-        bids: {$ref: '/signedOrdersSchema'},
-        asks: {$ref: '/signedOrdersSchema'},
+        bids: { $ref: '/signedOrdersSchema' },
+        asks: { $ref: '/signedOrdersSchema' },
     },
     required: ['bids', 'asks'],
 };
diff --git a/packages/json-schemas/schemas/relayer_api_orderbook_channel_update_response_schema.ts b/packages/json-schemas/schemas/relayer_api_orderbook_channel_update_response_schema.ts
index 90cfd8749..9a6d83d4c 100644
--- a/packages/json-schemas/schemas/relayer_api_orderbook_channel_update_response_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_orderbook_channel_update_response_schema.ts
@@ -2,10 +2,10 @@ export const relayerApiOrderbookChannelUpdateSchema = {
     id: '/RelayerApiOrderbookChannelUpdate',
     type: 'object',
     properties: {
-        type: {enum: ['update']},
-        channel: {enum: ['orderbook']},
-        requestId: {type: 'number'},
-        payload: {$ref: '/SignedOrder'},
+        type: { enum: ['update'] },
+        channel: { enum: ['orderbook'] },
+        requestId: { type: 'number' },
+        payload: { $ref: '/SignedOrder' },
     },
     required: ['type', 'channel', 'requestId', 'payload'],
 };
diff --git a/packages/json-schemas/schemas/relayer_api_orderbook_response_schema.ts b/packages/json-schemas/schemas/relayer_api_orderbook_response_schema.ts
index b592d4f8e..5c409c807 100644
--- a/packages/json-schemas/schemas/relayer_api_orderbook_response_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_orderbook_response_schema.ts
@@ -2,8 +2,8 @@ export const relayerApiOrderBookResponseSchema = {
     id: '/RelayerApiOrderBookResponse',
     type: 'object',
     properties: {
-        bids: {$ref: '/signedOrdersSchema'},
-        asks: {$ref: '/signedOrdersSchema'},
+        bids: { $ref: '/signedOrdersSchema' },
+        asks: { $ref: '/signedOrdersSchema' },
     },
     required: ['bids', 'asks'],
 };
diff --git a/packages/json-schemas/schemas/relayer_api_token_pairs_response_schema.ts b/packages/json-schemas/schemas/relayer_api_token_pairs_response_schema.ts
index 8ecab1424..5009c7955 100644
--- a/packages/json-schemas/schemas/relayer_api_token_pairs_response_schema.ts
+++ b/packages/json-schemas/schemas/relayer_api_token_pairs_response_schema.ts
@@ -3,8 +3,8 @@ export const relayerApiTokenPairsResponseSchema = {
     type: 'array',
     items: {
         properties: {
-            tokenA: {$ref: '/RelayerApiTokenTradeInfo'},
-            tokenB: {$ref: '/RelayerApiTokenTradeInfo'},
+            tokenA: { $ref: '/RelayerApiTokenTradeInfo' },
+            tokenB: { $ref: '/RelayerApiTokenTradeInfo' },
         },
         required: ['tokenA', 'tokenB'],
         type: 'object',
@@ -15,10 +15,10 @@ export const relayerApiTokenTradeInfoSchema = {
     id: '/RelayerApiTokenTradeInfo',
     type: 'object',
     properties: {
-        address: {$ref: '/Address'},
-        minAmount: {$ref: '/Number'},
-        maxAmount: {$ref: '/Number'},
-        precision: {type: 'number'},
+        address: { $ref: '/Address' },
+        minAmount: { $ref: '/Number' },
+        maxAmount: { $ref: '/Number' },
+        precision: { type: 'number' },
     },
     required: ['address'],
 };
diff --git a/packages/json-schemas/schemas/signed_orders_schema.ts b/packages/json-schemas/schemas/signed_orders_schema.ts
index c4c4a68ac..34d956836 100644
--- a/packages/json-schemas/schemas/signed_orders_schema.ts
+++ b/packages/json-schemas/schemas/signed_orders_schema.ts
@@ -1,5 +1,5 @@
 export const signedOrdersSchema = {
     id: '/signedOrdersSchema',
     type: 'array',
-    items: {$ref: '/SignedOrder'},
+    items: { $ref: '/SignedOrder' },
 };
diff --git a/packages/json-schemas/schemas/token_schema.ts b/packages/json-schemas/schemas/token_schema.ts
index aca4d4ad2..e64565c8b 100644
--- a/packages/json-schemas/schemas/token_schema.ts
+++ b/packages/json-schemas/schemas/token_schema.ts
@@ -1,10 +1,10 @@
 export const tokenSchema = {
     id: '/Token',
     properties: {
-        name: {type: 'string'},
-        symbol: {type: 'string'},
-        decimals: {type: 'number'},
-        address: {$ref: '/Address'},
+        name: { type: 'string' },
+        symbol: { type: 'string' },
+        decimals: { type: 'number' },
+        address: { $ref: '/Address' },
     },
     required: ['name', 'symbol', 'decimals', 'address'],
     type: 'object',
diff --git a/packages/json-schemas/schemas/tx_data_schema.ts b/packages/json-schemas/schemas/tx_data_schema.ts
index 41eaadd3c..4274c553f 100644
--- a/packages/json-schemas/schemas/tx_data_schema.ts
+++ b/packages/json-schemas/schemas/tx_data_schema.ts
@@ -7,25 +7,16 @@ export const jsNumber = {
 export const txDataSchema = {
     id: '/TxData',
     properties: {
-        from: {$ref: '/Address'},
-        to: {$ref: '/Address'},
+        from: { $ref: '/Address' },
+        to: { $ref: '/Address' },
         value: {
-            oneOf: [
-                {$ref: '/Number'},
-                {$ref: '/JsNumber'},
-            ],
+            oneOf: [{ $ref: '/Number' }, { $ref: '/JsNumber' }],
         },
         gas: {
-            oneOf: [
-                {$ref: '/Number'},
-                {$ref: '/JsNumber'},
-            ],
+            oneOf: [{ $ref: '/Number' }, { $ref: '/JsNumber' }],
         },
         gasPrice: {
-            oneOf: [
-                {$ref: '/Number'},
-                {$ref: '/JsNumber'},
-            ],
+            oneOf: [{ $ref: '/Number' }, { $ref: '/JsNumber' }],
         },
         data: {
             type: 'string',
diff --git a/packages/json-schemas/scripts/postpublish.js b/packages/json-schemas/scripts/postpublish.js
index 7fa452b08..16d67e03f 100644
--- a/packages/json-schemas/scripts/postpublish.js
+++ b/packages/json-schemas/scripts/postpublish.js
@@ -3,12 +3,13 @@ const packageJSON = require('../package.json');
 
 const subPackageName = packageJSON.name;
 
-postpublish_utils.getLatestTagAndVersionAsync(subPackageName)
+postpublish_utils
+    .getLatestTagAndVersionAsync(subPackageName)
     .then(function(result) {
         const releaseName = postpublish_utils.getReleaseName(subPackageName, result.version);
         const assets = [];
         return postpublish_utils.publishReleaseNotes(result.tag, releaseName, assets);
     })
-    .catch (function(err) {
+    .catch(function(err) {
         throw err;
     });
diff --git a/packages/json-schemas/src/index.ts b/packages/json-schemas/src/index.ts
index b7cae277e..9d8470348 100644
--- a/packages/json-schemas/src/index.ts
+++ b/packages/json-schemas/src/index.ts
@@ -1,4 +1,4 @@
-export {ValidatorResult, Schema} from 'jsonschema';
+export { ValidatorResult, Schema } from 'jsonschema';
 
-export {SchemaValidator} from './schema_validator';
-export {schemas} from './schemas';
+export { SchemaValidator } from './schema_validator';
+export { schemas } from './schemas';
diff --git a/packages/json-schemas/src/schema_validator.ts b/packages/json-schemas/src/schema_validator.ts
index c91f49340..e13326d2a 100644
--- a/packages/json-schemas/src/schema_validator.ts
+++ b/packages/json-schemas/src/schema_validator.ts
@@ -1,18 +1,18 @@
-import {Schema, Validator, ValidatorResult} from 'jsonschema';
+import { Schema, Validator, ValidatorResult } from 'jsonschema';
 import values = require('lodash.values');
 
-import {schemas} from './schemas';
+import { schemas } from './schemas';
 
 export class SchemaValidator {
-    private validator: Validator;
+    private _validator: Validator;
     constructor() {
-        this.validator = new Validator();
+        this._validator = new Validator();
         for (const schema of values(schemas)) {
-            this.validator.addSchema(schema, schema.id);
+            this._validator.addSchema(schema, schema.id);
         }
     }
     public addSchema(schema: Schema) {
-        this.validator.addSchema(schema, schema.id);
+        this._validator.addSchema(schema, schema.id);
     }
     // In order to validate a complex JS object using jsonschema, we must replace any complex
     // sub-types (e.g BigNumber) with a simpler string representation. Since BigNumber and other
@@ -20,7 +20,7 @@ export class SchemaValidator {
     // then parse it. The resultant object can then be checked using jsonschema.
     public validate(instance: any, schema: Schema): ValidatorResult {
         const jsonSchemaCompatibleObject = JSON.parse(JSON.stringify(instance));
-        return this.validator.validate(jsonSchemaCompatibleObject, schema);
+        return this._validator.validate(jsonSchemaCompatibleObject, schema);
     }
     public isValid(instance: any, schema: Schema): boolean {
         const isValid = this.validate(instance, schema).errors.length === 0;
diff --git a/packages/json-schemas/src/schemas.ts b/packages/json-schemas/src/schemas.ts
index 69164cbc7..5cb07acfe 100644
--- a/packages/json-schemas/src/schemas.ts
+++ b/packages/json-schemas/src/schemas.ts
@@ -1,39 +1,15 @@
-import {
-    addressSchema,
-    numberSchema,
-} from '../schemas/basic_type_schemas';
-import {
-    ecSignatureParameterSchema,
-    ecSignatureSchema,
-} from '../schemas/ec_signature_schema';
-import {
-    indexFilterValuesSchema,
-} from '../schemas/index_filter_values_schema';
-import {
-    orderCancellationRequestsSchema,
-} from '../schemas/order_cancel_schema';
-import {
-    orderFillOrKillRequestsSchema,
-} from '../schemas/order_fill_or_kill_requests_schema';
-import {
-    orderFillRequestsSchema,
-} from '../schemas/order_fill_requests_schema';
-import {
-    orderHashSchema,
-} from '../schemas/order_hash_schema';
-import {
-    orderSchema,
-    signedOrderSchema,
-} from '../schemas/order_schemas';
-import {
-    relayerApiErrorResponseSchema,
-} from '../schemas/relayer_api_error_response_schema';
-import {
-    relayerApiFeesPayloadSchema,
-} from '../schemas/relayer_api_fees_payload_schema';
-import {
-    relayerApiFeesResponseSchema,
-} from '../schemas/relayer_api_fees_response_schema';
+import { addressSchema, numberSchema } from '../schemas/basic_type_schemas';
+import { blockParamSchema, blockRangeSchema } from '../schemas/block_range_schema';
+import { ecSignatureParameterSchema, ecSignatureSchema } from '../schemas/ec_signature_schema';
+import { indexFilterValuesSchema } from '../schemas/index_filter_values_schema';
+import { orderCancellationRequestsSchema } from '../schemas/order_cancel_schema';
+import { orderFillOrKillRequestsSchema } from '../schemas/order_fill_or_kill_requests_schema';
+import { orderFillRequestsSchema } from '../schemas/order_fill_requests_schema';
+import { orderHashSchema } from '../schemas/order_hash_schema';
+import { orderSchema, signedOrderSchema } from '../schemas/order_schemas';
+import { relayerApiErrorResponseSchema } from '../schemas/relayer_api_error_response_schema';
+import { relayerApiFeesPayloadSchema } from '../schemas/relayer_api_fees_payload_schema';
+import { relayerApiFeesResponseSchema } from '../schemas/relayer_api_fees_response_schema';
 import {
     relayerApiOrderbookChannelSubscribePayload,
     relayerApiOrderbookChannelSubscribeSchema,
@@ -42,30 +18,15 @@ import {
     relayerApiOrderbookChannelSnapshotPayload,
     relayerApiOrderbookChannelSnapshotSchema,
 } from '../schemas/relayer_api_orderbook_channel_snapshot_schema';
-import {
-    relayerApiOrderbookChannelUpdateSchema,
-} from '../schemas/relayer_api_orderbook_channel_update_response_schema';
-import {
-    relayerApiOrderBookResponseSchema,
-} from '../schemas/relayer_api_orderbook_response_schema';
+import { relayerApiOrderbookChannelUpdateSchema } from '../schemas/relayer_api_orderbook_channel_update_response_schema';
+import { relayerApiOrderBookResponseSchema } from '../schemas/relayer_api_orderbook_response_schema';
 import {
     relayerApiTokenPairsResponseSchema,
     relayerApiTokenTradeInfoSchema,
 } from '../schemas/relayer_api_token_pairs_response_schema';
-import {
-    signedOrdersSchema,
-} from '../schemas/signed_orders_schema';
-import {
-    blockParamSchema,
-    subscriptionOptsSchema,
-} from '../schemas/subscription_opts_schema';
-import {
-    tokenSchema,
-} from '../schemas/token_schema';
-import {
-    jsNumber,
-    txDataSchema,
-} from '../schemas/tx_data_schema';
+import { signedOrdersSchema } from '../schemas/signed_orders_schema';
+import { tokenSchema } from '../schemas/token_schema';
+import { jsNumber, txDataSchema } from '../schemas/tx_data_schema';
 
 export const schemas = {
     numberSchema,
@@ -81,7 +42,7 @@ export const schemas = {
     signedOrderSchema,
     signedOrdersSchema,
     blockParamSchema,
-    subscriptionOptsSchema,
+    blockRangeSchema,
     tokenSchema,
     jsNumber,
     txDataSchema,
diff --git a/packages/json-schemas/test/schema_test.ts b/packages/json-schemas/test/schema_test.ts
index 8a2f9407d..7b058781d 100644
--- a/packages/json-schemas/test/schema_test.ts
+++ b/packages/json-schemas/test/schema_test.ts
@@ -1,11 +1,10 @@
-import {promisify} from '@0xproject/utils';
-import BigNumber from 'bignumber.js';
+import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
 import forEach = require('lodash.foreach');
 import 'mocha';
 
-import {schemas, SchemaValidator} from '../src/index';
+import { schemas, SchemaValidator } from '../src/index';
 
 chai.config.includeStack = true;
 chai.use(dirtyChai);
@@ -16,7 +15,6 @@ const {
     addressSchema,
     ecSignatureSchema,
     ecSignatureParameterSchema,
-    indexFilterValuesSchema,
     orderCancellationRequestsSchema,
     orderFillOrKillRequestsSchema,
     orderFillRequestsSchema,
@@ -25,7 +23,7 @@ const {
     signedOrderSchema,
     signedOrdersSchema,
     blockParamSchema,
-    subscriptionOptsSchema,
+    blockRangeSchema,
     tokenSchema,
     jsNumber,
     txDataSchema,
@@ -96,9 +94,9 @@ describe('Schema', () => {
         });
         it('should fail for invalid parameters', () => {
             const testCases = [
-                '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc3',  // shorter
+                '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc3', // shorter
                 '0xzzzz9190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254', // invalid characters
-                '40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',   // no 0x
+                '40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254', // no 0x
             ];
             const shouldFail = true;
             validateAgainstSchema(testCases, ecSignatureParameterSchema, shouldFail);
@@ -124,11 +122,7 @@ describe('Schema', () => {
             const v = 27;
             const r = '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33';
             const s = '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254';
-            const testCases = [
-                {},
-                {v},
-                {r, s, v: 31},
-            ];
+            const testCases = [{}, { v }, { r, s, v: 31 }];
             const shouldFail = true;
             validateAgainstSchema(testCases, ecSignatureSchema, shouldFail);
         });
@@ -154,39 +148,24 @@ describe('Schema', () => {
     });
     describe('#blockParamSchema', () => {
         it('should validate valid block param', () => {
-            const testCases = [
-                42,
-                'latest',
-                'pending',
-                'earliest',
-            ];
+            const testCases = [42, 'latest', 'pending', 'earliest'];
             validateAgainstSchema(testCases, blockParamSchema);
         });
         it('should fail for invalid block param', () => {
-            const testCases = [
-                {},
-                '42',
-                'pemding',
-            ];
+            const testCases = [{}, '42', 'pemding'];
             const shouldFail = true;
             validateAgainstSchema(testCases, blockParamSchema, shouldFail);
         });
     });
-    describe('#subscriptionOptsSchema', () => {
+    describe('#blockRangeSchema', () => {
         it('should validate valid subscription opts', () => {
-            const testCases = [
-                {fromBlock: 42, toBlock: 'latest'},
-                {fromBlock: 42},
-                {},
-            ];
-            validateAgainstSchema(testCases, subscriptionOptsSchema);
+            const testCases = [{ fromBlock: 42, toBlock: 'latest' }, { fromBlock: 42 }, {}];
+            validateAgainstSchema(testCases, blockRangeSchema);
         });
         it('should fail for invalid subscription opts', () => {
-            const testCases = [
-                {fromBlock: '42'},
-            ];
+            const testCases = [{ fromBlock: '42' }];
             const shouldFail = true;
-            validateAgainstSchema(testCases, subscriptionOptsSchema, shouldFail);
+            validateAgainstSchema(testCases, blockRangeSchema, shouldFail);
         });
     });
     describe('#tokenSchema', () => {
@@ -198,9 +177,7 @@ describe('Schema', () => {
             url: 'https://0xproject.com',
         };
         it('should validate valid token', () => {
-            const testCases = [
-                token,
-            ];
+            const testCases = [token];
             validateAgainstSchema(testCases, tokenSchema);
         });
         it('should fail for invalid token', () => {
@@ -237,9 +214,7 @@ describe('Schema', () => {
         };
         describe('#orderSchema', () => {
             it('should validate valid order', () => {
-                const testCases = [
-                    order,
-                ];
+                const testCases = [order];
                 validateAgainstSchema(testCases, orderSchema);
             });
             it('should fail for invalid order', () => {
@@ -269,28 +244,18 @@ describe('Schema', () => {
             };
             describe('#signedOrdersSchema', () => {
                 it('should validate valid signed orders', () => {
-                    const testCases = [
-                        [signedOrder],
-                        [],
-                    ];
+                    const testCases = [[signedOrder], []];
                     validateAgainstSchema(testCases, signedOrdersSchema);
                 });
                 it('should fail for invalid signed orders', () => {
-                    const testCases = [
-                        [
-                            signedOrder,
-                            1,
-                        ],
-                    ];
+                    const testCases = [[signedOrder, 1]];
                     const shouldFail = true;
                     validateAgainstSchema(testCases, signedOrdersSchema, shouldFail);
                 });
             });
             describe('#signedOrderSchema', () => {
                 it('should validate valid signed order', () => {
-                    const testCases = [
-                        signedOrder,
-                    ];
+                    const testCases = [signedOrder];
                     validateAgainstSchema(testCases, signedOrderSchema);
                 });
                 it('should fail for invalid signed order', () => {
@@ -312,9 +277,7 @@ describe('Schema', () => {
                     },
                 ];
                 it('should validate valid order fill or kill requests', () => {
-                    const testCases = [
-                        orderFillOrKillRequests,
-                    ];
+                    const testCases = [orderFillOrKillRequests];
                     validateAgainstSchema(testCases, orderFillOrKillRequestsSchema);
                 });
                 it('should fail for invalid order fill or kill requests', () => {
@@ -338,9 +301,7 @@ describe('Schema', () => {
                     },
                 ];
                 it('should validate valid order cancellation requests', () => {
-                    const testCases = [
-                        orderCancellationRequests,
-                    ];
+                    const testCases = [orderCancellationRequests];
                     validateAgainstSchema(testCases, orderCancellationRequestsSchema);
                 });
                 it('should fail for invalid order cancellation requests', () => {
@@ -364,9 +325,7 @@ describe('Schema', () => {
                     },
                 ];
                 it('should validate valid order fill requests', () => {
-                    const testCases = [
-                        orderFillRequests,
-                    ];
+                    const testCases = [orderFillRequests];
                     validateAgainstSchema(testCases, orderFillRequestsSchema);
                 });
                 it('should fail for invalid order fill requests', () => {
@@ -561,12 +520,8 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: 2,
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
-                                asks: [
-                                    signedOrder,
-                                ],
+                                bids: [signedOrder],
+                                asks: [signedOrder],
                             },
                         },
                     ];
@@ -579,12 +534,8 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: 2,
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
-                                asks: [
-                                    signedOrder,
-                                ],
+                                bids: [signedOrder],
+                                asks: [signedOrder],
                             },
                         },
                         {
@@ -592,24 +543,16 @@ describe('Schema', () => {
                             channel: 'bar',
                             requestId: 2,
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
-                                asks: [
-                                    signedOrder,
-                                ],
+                                bids: [signedOrder],
+                                asks: [signedOrder],
                             },
                         },
                         {
                             type: 'snapshot',
                             channel: 'orderbook',
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
-                                asks: [
-                                    signedOrder,
-                                ],
+                                bids: [signedOrder],
+                                asks: [signedOrder],
                             },
                         },
                         {
@@ -617,12 +560,8 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: '2',
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
-                                asks: [
-                                    signedOrder,
-                                ],
+                                bids: [signedOrder],
+                                asks: [signedOrder],
                             },
                         },
                         {
@@ -630,9 +569,7 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: 2,
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
+                                bids: [signedOrder],
                             },
                         },
                         {
@@ -640,9 +577,7 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: 2,
                             payload: {
-                                asks: [
-                                    signedOrder,
-                                ],
+                                asks: [signedOrder],
                             },
                         },
                         {
@@ -650,12 +585,8 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: 2,
                             payload: {
-                                bids: [
-                                    signedOrder,
-                                ],
-                                asks: [
-                                    {},
-                                ],
+                                bids: [signedOrder],
+                                asks: [{}],
                             },
                         },
                         {
@@ -663,12 +594,8 @@ describe('Schema', () => {
                             channel: 'orderbook',
                             requestId: 2,
                             payload: {
-                                bids: [
-                                    {},
-                                ],
-                                asks: [
-                                    signedOrder,
-                                ],
+                                bids: [{}],
+                                asks: [signedOrder],
                             },
                         },
                     ];
@@ -943,18 +870,11 @@ describe('Schema', () => {
     });
     describe('#jsNumberSchema', () => {
         it('should validate valid js number', () => {
-            const testCases = [
-                1,
-                42,
-            ];
+            const testCases = [1, 42];
             validateAgainstSchema(testCases, jsNumber);
         });
         it('should fail for invalid js number', () => {
-            const testCases = [
-                NaN,
-                -1,
-                new BigNumber(1),
-            ];
+            const testCases = [NaN, -1, new BigNumber(1)];
             const shouldFail = true;
             validateAgainstSchema(testCases, jsNumber, shouldFail);
         });
diff --git a/packages/json-schemas/tsconfig.json b/packages/json-schemas/tsconfig.json
index 40c2f0c8c..88a467ccb 100644
--- a/packages/json-schemas/tsconfig.json
+++ b/packages/json-schemas/tsconfig.json
@@ -1,17 +1,7 @@
 {
-  "compilerOptions": {
-    "module": "commonjs",
-    "target": "es5",
-    "lib": [ "es2017", "dom"],
-    "outDir": "lib",
-    "sourceMap": true,
-    "declaration": true,
-    "noImplicitAny": true,
-    "strictNullChecks": true
-  },
-  "include": [
-    "./src/**/*",
-    "./test/**/*",
-    "../../node_modules/chai-typescript-typings/index.d.ts"
-  ]
+    "extends": "../../tsconfig",
+    "compilerOptions": {
+        "outDir": "lib"
+    },
+    "include": ["./src/**/*", "./test/**/*", "../../node_modules/chai-typescript-typings/index.d.ts"]
 }
diff --git a/packages/json-schemas/tslint.json b/packages/json-schemas/tslint.json
index a07795151..ffaefe83a 100644
--- a/packages/json-schemas/tslint.json
+++ b/packages/json-schemas/tslint.json
@@ -1,5 +1,3 @@
 {
-  "extends": [
-    "@0xproject/tslint-config"
-  ]
+    "extends": ["@0xproject/tslint-config"]
 }