Remove use of isTransit() function

lib/components/narrative/default/itinerary-description.tsx

@@ -68,7 +68,7 @@ export function ItineraryDescription({ itinerary }: Props): JSX.Element {
   let transitMode
   itinerary.legs.forEach((leg) => {
     const { duration, mode, rentedBike, rentedVehicle } = leg
-    if (isTransit(mode) && duration > primaryTransitDuration) {
+    if (leg.transitLeg && duration > primaryTransitDuration) {
       primaryTransitDuration = duration
 
       // If custom TransitModes have been defined for the given mode/leg, attempt to use them,

lib/components/narrative/line-itin/LegIconWithA11y.tsx

@@ -1,3 +1,5 @@
+import { Leg } from '@opentripplanner/types'
+
 import { getFormattedMode } from '../../../util/i18n'
 import coreUtils from '@opentripplanner/core-utils'
 import InvisibleA11yLabel from '../../util/invisible-a11y-label'
@@ -8,15 +10,17 @@ import { ComponentContext } from '../../../util/contexts'
 
 import { useIntl } from 'react-intl'
 
-const { isTransit } = coreUtils.itinerary
+type Props = {
+  leg: Leg
+}
 
-const LegIconWithA11y = (props: any) => {
+const LegIconWithA11y = (props: Props): JSX.Element => {
   // @ts-expect-error No type on ComponentContext
   const { LegIcon } = useContext(ComponentContext)
   const intl = useIntl()
   const { leg } = props
-  const { mode } = leg
-  const ariaLabel = isTransit(mode) ? getFormattedMode(mode, intl) : null
+  const { mode, transitLeg } = leg
+  const ariaLabel = transitLeg ? getFormattedMode(mode, intl) : null
   return (
     <>
       <LegIcon {...props} />

lib/components/narrative/line-itin/realtime-time-column.tsx

@@ -33,7 +33,7 @@ function RealtimeTimeColumn({ isDestination, leg }: Props): ReactElement {
   }
 
   const timeMillis = isDestination ? leg.endTime : leg.startTime
-  const isTransitLeg = isTransit(leg.mode)
+  const isTransitLeg = leg.transitLeg
   const isRealtimeTransitLeg = isTransitLeg && leg.realTime
 
   // For non-transit legs show only the scheduled time.

lib/util/itinerary.tsx

@@ -373,7 +373,7 @@ export function getTotalFare(
     ) {
       hasBikeshare = true
     }
-    if (coreUtils.itinerary.isTransit(leg.mode) && transitFare == null) {
+    if (leg.transitLeg && transitFare == null) {
       transitFareNotProvided = true
     }
   })