Try enabling no-unused-variable...

packages/utils/src/abi_decoder.ts

@@ -29,12 +29,9 @@ export class AbiDecoder {
             return log;
         }
         const ethersInterface = new ethers.Interface([event]);
-        const logData = log.data;
         const decodedParams: DecodedLogArgs = {};
         let topicsIndex = 1;
 
-        const nonIndexedInputs = _.filter(event.inputs, input => !input.indexed);
-        const dataTypes = _.map(nonIndexedInputs, input => input.type);
         const decodedData = ethersInterface.events[event.name].parse(log.data);
 
         let didFailToDecode = false;

packages/utils/src/abi_utils.ts

@@ -1,4 +1,4 @@
-import { AbiDefinition, AbiType, ConstructorAbi, ContractAbi, DataItem, MethodAbi } from 'ethereum-types';
+import { AbiDefinition, AbiType, ContractAbi, DataItem, MethodAbi } from 'ethereum-types';
 import * as _ from 'lodash';
 
 export const abiUtils = {

packages/utils/src/interval_utils.ts

@@ -1,4 +1,3 @@
-import * as _ from 'lodash';
 
 export const intervalUtils = {
     setAsyncExcludingInterval(