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Move subproviders from dev-utils to subproviders

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This commit is contained in:
Leonid Logvinov
2018-02-12 15:40:28 +01:00
parent 18e1c2dea5
commit dbad7d1869
8 changed files with 13 additions and 3 deletions
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27
packages/dev-utils/src/subproviders/empty_wallet_subprovider.ts
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@@ -1,27 +0,0 @@
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
}
}

34
packages/dev-utils/src/subproviders/fake_gas_estimate_subprovider.ts
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@@ -1,34 +0,0 @@
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
}
}

4
packages/dev-utils/src/web3_factory.ts
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@@ -3,12 +3,10 @@
// we are not running in a browser env.
// Filed issue: https://github.com/ethereum/web3.js/issues/844
(global as any).XMLHttpRequest = undefined;
import { EmptyWalletSubprovider, FakeGasEstimateSubprovider } from '@0xproject/subproviders';
import ProviderEngine = require('web3-provider-engine');
import RpcSubprovider = require('web3-provider-engine/subproviders/rpc');
import { EmptyWalletSubprovider } from './subproviders/empty_wallet_subprovider';
import { FakeGasEstimateSubprovider } from './subproviders/fake_gas_estimate_subprovider';
import { constants } from './constants';
// HACK: web3 leaks XMLHttpRequest into the global scope and causes requests to hang