diff options
Diffstat (limited to 'packages/subproviders')
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 + } +} |