Merge branch 'development' of github.com:0xProject/0x.js into development

* 'development' of github.com:0xProject/0x.js: (24 commits)
  Rename variables
  Update CHANGELOG
  Add npm config for contracts list
  Run prettier
  Fix checks, add contract list to compile script in package.json
  Add contracts to compiler options
  Add missing public types from connect docs
  Change imports order
  Change default page params in connect to page 1 and perPage 100
  Add docs staging to 0x.js package
  Fix a typo
  Add an assertion
  Add PR numbers
  Fix entry points
  Add tests for dev-utils package
  Move subproviders from dev-utils to subproviders
  Add missing CHANGELOG entry
  Add support for intersection types in docs
  Add stagedocs script to connect package
  web3 typings fix - web3.net.peerCount returns number
  ...

4 files changed, 67 insertions, 0 deletions

diff --git a/packages/subproviders/CHANGELOG.md b/packages/subproviders/CHANGELOG.md
index f2c028aea..e970c69bd 100644
--- a/packages/subproviders/CHANGELOG.md
+++ b/packages/subproviders/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## v0.5.0 - _TBD, 2018_
+
+    * Add EmptyWalletSubprovider and FakeGasEstimateSubprovider (#392)
+
 ## v0.4.1 - _February 9, 2018_
 
     * Fix publishing issue where .npmignore was not properly excluding undesired content (#389)
diff --git a/packages/subproviders/src/index.ts b/packages/subproviders/src/index.ts
index 67d52ee25..4da405ec0 100644
--- a/packages/subproviders/src/index.ts
+++ b/packages/subproviders/src/index.ts
@@ -6,6 +6,8 @@ import {
 
 import { LedgerEthereumClient } from './types';
 
+export { EmptyWalletSubprovider } from './subproviders/empty_wallet_subprovider';
+export { FakeGasEstimateSubprovider } from './subproviders/fake_gas_estimate_subprovider';
 export { InjectedWeb3Subprovider } from './subproviders/injected_web3';
 export { RedundantRPCSubprovider } from './subproviders/redundant_rpc';
 export { LedgerSubprovider } from './subproviders/ledger';
diff --git a/packages/subproviders/src/subproviders/empty_wallet_subprovider.ts b/packages/subproviders/src/subproviders/empty_wallet_subprovider.ts
new file mode 100644
index 000000000..8c1fdfdb2
--- /dev/null
+++ b/packages/subproviders/src/subproviders/empty_wallet_subprovider.ts
@@ -0,0 +1,27 @@
+import { JSONRPCPayload } from '@0xproject/types';
+
+/*
+ * This class implements the web3-provider-engine subprovider interface and returns
+ * that the provider has no addresses when queried.
+ * Source: https://github.com/MetaMask/provider-engine/blob/master/subproviders/subprovider.js
+ */
+export class EmptyWalletSubprovider {
+    // This method needs to be here to satisfy the interface but linter wants it to be static.
+    // tslint:disable-next-line:prefer-function-over-method
+    public handleRequest(payload: JSONRPCPayload, next: () => void, end: (err: Error | null, result: any) => void) {
+        switch (payload.method) {
+            case 'eth_accounts':
+                end(null, []);
+                return;
+
+            default:
+                next();
+                return;
+        }
+    }
+    // Required to implement this method despite not needing it for this subprovider
+    // tslint:disable-next-line:prefer-function-over-method
+    public setEngine(engine: any) {
+        // noop
+    }
+}
diff --git a/packages/subproviders/src/subproviders/fake_gas_estimate_subprovider.ts b/packages/subproviders/src/subproviders/fake_gas_estimate_subprovider.ts
new file mode 100644
index 000000000..b455a0ed7
--- /dev/null
+++ b/packages/subproviders/src/subproviders/fake_gas_estimate_subprovider.ts
@@ -0,0 +1,34 @@
+import { JSONRPCPayload } from '@0xproject/types';
+
+/*
+ * This class implements the web3-provider-engine subprovider interface and returns
+ * the constant gas estimate when queried.
+ * HACK: We need this so that our tests don't use testrpc gas estimation which sometimes kills the node.
+ * Source: https://github.com/trufflesuite/ganache-cli/issues/417
+ * Source: https://github.com/trufflesuite/ganache-cli/issues/437
+ * Source: https://github.com/MetaMask/provider-engine/blob/master/subproviders/subprovider.js
+ */
+export class FakeGasEstimateSubprovider {
+    private _constantGasAmount: number;
+    constructor(constantGasAmount: number) {
+        this._constantGasAmount = constantGasAmount;
+    }
+    // This method needs to be here to satisfy the interface but linter wants it to be static.
+    // tslint:disable-next-line:prefer-function-over-method
+    public handleRequest(payload: JSONRPCPayload, next: () => void, end: (err: Error | null, result: any) => void) {
+        switch (payload.method) {
+            case 'eth_estimateGas':
+                end(null, this._constantGasAmount);
+                return;
+
+            default:
+                next();
+                return;
+        }
+    }
+    // Required to implement this method despite not needing it for this subprovider
+    // tslint:disable-next-line:prefer-function-over-method
+    public setEngine(engine: any) {
+        // noop
+    }
+}