1 files changed, 0 insertions, 70 deletions
diff --git a/packages/subproviders/src/subproviders/subprovider.ts b/packages/subproviders/src/subproviders/subprovider.ts
deleted file mode 100644
index cd6780e0c..000000000
--- a/packages/subproviders/src/subproviders/subprovider.ts
+++ /dev/null
@@ -1,70 +0,0 @@
-import { promisify } from '@0x/utils';
-import { JSONRPCRequestPayload, JSONRPCResponsePayload, Provider } from 'ethereum-types';
-
-import { Callback, ErrorCallback, JSONRPCRequestPayloadWithMethod } from '../types';
-/**
- * A altered version of the base class Subprovider found in [web3-provider-engine](https://github.com/MetaMask/provider-engine).
- * This one has an async/await `emitPayloadAsync` and also defined types.
- */
-export abstract class Subprovider {
-    // tslint:disable-next-line:underscore-private-and-protected
-    private engine!: Provider;
-    protected static _createFinalPayload(
-        payload: Partial<JSONRPCRequestPayloadWithMethod>,
-    ): Partial<JSONRPCRequestPayloadWithMethod> {
-        const finalPayload = {
-            // defaults
-            id: Subprovider._getRandomId(),
-            jsonrpc: '2.0',
-            params: [],
-            ...payload,
-        };
-        return finalPayload;
-    }
-    // Ported from: https://github.com/MetaMask/provider-engine/blob/master/util/random-id.js
-    private static _getRandomId(): number {
-        const extraDigits = 3;
-        const baseTen = 10;
-        // 13 time digits
-        const datePart = new Date().getTime() * Math.pow(baseTen, extraDigits);
-        // 3 random digits
-        const extraPart = Math.floor(Math.random() * Math.pow(baseTen, extraDigits));
-        // 16 digits
-        return datePart + extraPart;
-    }
-    /**
-     * @param payload JSON RPC request payload
-     * @param next A callback to pass the request to the next subprovider in the stack
-     * @param end A callback called once the subprovider is done handling the request
-     */
-    // tslint:disable-next-line:async-suffix
-    public abstract async handleRequest(
-        payload: JSONRPCRequestPayload,
-        next: Callback,
-        end: ErrorCallback,
-    ): Promise<void>;
-
-    /**
-     * Emits a JSON RPC payload that will then be handled by the ProviderEngine instance
-     * this subprovider is a part of. The payload will cascade down the subprovider middleware
-     * stack until finding the responsible entity for handling the request.
-     * @param payload JSON RPC payload
-     * @returns JSON RPC response payload
-     */
-    public async emitPayloadAsync(payload: Partial<JSONRPCRequestPayloadWithMethod>): Promise<JSONRPCResponsePayload> {
-        const finalPayload = Subprovider._createFinalPayload(payload);
-        // Promisify does the binding internally and `this` is supplied as a second argument
-        // tslint:disable-next-line:no-unbound-method
-        const response = await promisify<JSONRPCResponsePayload>(this.engine.sendAsync, this.engine)(finalPayload);
-        return response;
-    }
-    /**
-     * Set's the subprovider's engine to the ProviderEngine it is added to.
-     * This is only called within the ProviderEngine source code, do not call
-     * directly.
-     * @param engine The ProviderEngine this subprovider is added to
-     */
-    public setEngine(engine: Provider): void {
-        this.engine = engine;
-    }
-}