chore: fix eslint errors

Author: jedwards1211

src/asyncify.ts

@@ -2,7 +2,7 @@ import * as t from '@babel/types'
 import { NodePath } from '@babel/traverse'
 
 import returnsOrAwaitsPromises from './util/returnsOrAwaitsPromises'
-import { isPromiseHandler, isPromiseMethodCall } from './util/predicates'
+import { isPromiseMethodCall } from './util/predicates'
 import findPromiseChains from './util/findPromiseChains'
 import unwindPromiseChain from './util/unwindPromiseChain'
 import finalCleanup from './util/finalCleanup'

src/util/builders.ts

@@ -1,6 +1,4 @@
 import * as t from '@babel/types'
-import { NodePath } from '@babel/traverse'
-
 import { needsAwait } from './predicates'
 
 export function awaited<T extends t.Expression>(node: T): t.Expression {

src/util/convertConditionalReturns.ts

@@ -48,7 +48,7 @@ export default function convertConditionalReturns(
   parent.traverse(
     {
       IfStatement: {
-        enter(path: NodePath<t.IfStatement>) {
+        enter(path: NodePath<t.IfStatement>): void {
           if (path.parentPath.isIfStatement()) return
           ifDepth++
           const { returning, notReturning } = splitBranches(path)
@@ -62,7 +62,7 @@ export default function convertConditionalReturns(
             }
           }
         },
-        exit(path: NodePath<t.IfStatement>) {
+        exit(path: NodePath<t.IfStatement>): void {
           if (path.parentPath.isIfStatement()) return
           ifDepth--
         },

src/util/finalCleanup.ts

@@ -25,7 +25,7 @@ export default function finalCleanup(path: NodePath<t.Function>): void {
   path.traverse(
     {
       IfStatement: {
-        exit(path: NodePath<t.IfStatement>) {
+        exit(path: NodePath<t.IfStatement>): void {
           const consequent = path.get('consequent')
           const alternate = path.get('alternate')
           if (isEmptyBlock(consequent)) {

src/util/shouldIgnoreChain.ts

@@ -8,7 +8,7 @@ import getFinallyHandler from './getFinallyHandler'
 
 function chainLength(path: NodePath<t.CallExpression>): number {
   let length = 0
-  for (const link of iterateChain(path)) length++
+  for (const link of iterateChain(path)) length++ // eslint-disable-line @typescript-eslint/no-unused-vars
   return length
 }