diff --git a/.eslintrc b/.eslintrc
index 0c776ec027a..d7611546e75 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -85,16 +85,9 @@
     },
     {
       "files": [
-        "app/javascript/packages/address-search/components/in-person-locations.spec.tsx",
-        "app/javascript/packages/components/spinner-dots.jsx",
         "app/javascript/packages/document-capture/components/acuant-capture.tsx",
-        "app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.jsx",
-        "app/javascript/packages/document-capture/components/document-side-acuant-capture.jsx",
         "app/javascript/packages/document-capture/components/file-image.jsx",
         "app/javascript/packages/document-capture/components/file-input.tsx",
-        "app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.tsx",
-        "app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.tsx",
-        "app/javascript/packages/document-capture/components/in-person-prepare-step.tsx",
         "app/javascript/packages/document-capture/components/submission-interstitial.jsx",
         "app/javascript/packages/document-capture/components/submission.jsx",
         "spec/javascript/packages/document-capture/context/failed-capture-attempts-spec.jsx",
diff --git a/app/javascript/packages/address-search/components/in-person-locations.spec.tsx b/app/javascript/packages/address-search/components/in-person-locations.spec.tsx
index 89971bc062b..99767f8bb59 100644
--- a/app/javascript/packages/address-search/components/in-person-locations.spec.tsx
+++ b/app/javascript/packages/address-search/components/in-person-locations.spec.tsx
@@ -5,7 +5,7 @@ import sinon from 'sinon';
 import type { FormattedLocation } from './in-person-locations';
 import InPersonLocations from './in-person-locations';
 
-function NoLocationsViewMock({ address }) {
+function NoLocationsViewMock({ address }: { address: string }) {
   return (
     <div data-testid="no-results-found">
       <p>No PO found</p>
diff --git a/app/javascript/packages/components/spinner-dots.jsx b/app/javascript/packages/components/spinner-dots.tsx
similarity index 59%
rename from app/javascript/packages/components/spinner-dots.jsx
rename to app/javascript/packages/components/spinner-dots.tsx
index 3389d817aa6..a20d2ec1701 100644
--- a/app/javascript/packages/components/spinner-dots.jsx
+++ b/app/javascript/packages/components/spinner-dots.tsx
@@ -1,15 +1,14 @@
-/**
- * @typedef SpinnerDotsProps
- *
- * @prop {boolean=} isCentered Whether to absolutely-position the element at its container's center.
- * Defaults to false.
- * @prop {string=} className Optional class name.
- */
+interface SpinnerDotsProps {
+  // Optional whether to absolutely-position the element at its container's center. Defaults to false.
+  isCentered?: boolean;
+  // Optional class name.
+  className?: string;
+}
 
 /**
  * @param {SpinnerDotsProps} props
  */
-function SpinnerDots({ isCentered, className }) {
+function SpinnerDots({ isCentered, className }: SpinnerDotsProps) {
   const classes = ['spinner-dots', isCentered && 'spinner-dots--centered', className]
     .filter(Boolean)
     .join(' ');
diff --git a/app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.jsx b/app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.tsx
similarity index 83%
rename from app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.jsx
rename to app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.tsx
index 86dab1889a2..56886449313 100644
--- a/app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.jsx
+++ b/app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.tsx
@@ -15,7 +15,15 @@ function LoadingSpinner() {
   );
 }
 
-function AcuantSelfieCaptureCanvas({ imageCaptureText, onSelfieCaptureClosed }) {
+interface AcuantSelfieCaptureCanvasProps {
+  imageCaptureText: string;
+  onSelfieCaptureClosed: () => void;
+}
+
+function AcuantSelfieCaptureCanvas({
+  imageCaptureText,
+  onSelfieCaptureClosed,
+}: AcuantSelfieCaptureCanvasProps) {
   const { isReady } = useContext(AcuantContext);
   const { t } = useI18n();
   // The Acuant SDK script AcuantPassiveLiveness attaches to whatever element has
diff --git a/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.spec.tsx b/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.spec.tsx
index 5c4adab0d17..86143471f18 100644
--- a/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.spec.tsx
+++ b/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.spec.tsx
@@ -39,7 +39,7 @@ const USPS_RESPONSE = [
 const DEFAULT_PROPS = {
   toPreviousStep() {},
   onChange() {},
-  registerField() {},
+  registerField: (_string) => undefined,
 };
 
 describe('InPersonLocationFullAddressEntryPostOfficeSearchStep', () => {
diff --git a/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.tsx b/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.tsx
index fca72bf0a9c..f4f2e97c616 100644
--- a/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.tsx
+++ b/app/javascript/packages/document-capture/components/in-person-location-full-address-entry-post-office-search-step.tsx
@@ -3,16 +3,23 @@ import { request } from '@18f/identity-request';
 import { forceRedirect } from '@18f/identity-url';
 import { FullAddressSearch, transformKeys, snakeCase } from '@18f/identity-address-search';
 import type { FormattedLocation } from '@18f/identity-address-search/types';
+import type { RegisterFieldCallback } from '@18f/identity-form-steps';
 import BackButton from './back-button';
 import AnalyticsContext from '../context/analytics';
 import { InPersonContext } from '../context';
 import UploadContext from '../context/upload';
 
+interface InPersonLocationFullAddressEntryPostOfficeSearchStepProps {
+  onChange: ({ selectedLocationAddress }: { selectedLocationAddress: string }) => void;
+  toPreviousStep: () => void;
+  registerField: RegisterFieldCallback;
+}
+
 function InPersonLocationFullAddressEntryPostOfficeSearchStep({
   onChange,
   toPreviousStep,
   registerField,
-}) {
+}: InPersonLocationFullAddressEntryPostOfficeSearchStepProps) {
   const { inPersonURL, locationsURL, usStatesTerritories } = useContext(InPersonContext);
   const [inProgress, setInProgress] = useState<boolean>(false);
   const [autoSubmit, setAutoSubmit] = useState<boolean>(false);
diff --git a/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.spec.tsx b/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.spec.tsx
index 8a3d6155bda..c8c53ccd41a 100644
--- a/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.spec.tsx
+++ b/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.spec.tsx
@@ -54,7 +54,7 @@ const DEFAULT_PROPS = {
   toPreviousStep() {},
   onChange() {},
   value: {},
-  registerField() {},
+  registerField: (_string) => undefined,
 };
 
 describe('InPersonLocationPostOfficeSearchStep', () => {
diff --git a/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.tsx b/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.tsx
index 44e45fea73d..6685afc81f1 100644
--- a/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.tsx
+++ b/app/javascript/packages/document-capture/components/in-person-location-post-office-search-step.tsx
@@ -3,12 +3,23 @@ import { request } from '@18f/identity-request';
 import { forceRedirect } from '@18f/identity-url';
 import AddressSearch, { transformKeys, snakeCase } from '@18f/identity-address-search';
 import type { FormattedLocation } from '@18f/identity-address-search/types';
+import type { RegisterFieldCallback } from '@18f/identity-form-steps';
 import BackButton from './back-button';
 import AnalyticsContext from '../context/analytics';
 import { InPersonContext } from '../context';
 import UploadContext from '../context/upload';
 
-function InPersonLocationPostOfficeSearchStep({ onChange, toPreviousStep, registerField }) {
+interface InPersonLocationPostOfficeSearchStepProps {
+  onChange: ({ selectedLocationAddress }: { selectedLocationAddress: string }) => void;
+  toPreviousStep: () => void;
+  registerField: RegisterFieldCallback;
+}
+
+function InPersonLocationPostOfficeSearchStep({
+  onChange,
+  toPreviousStep,
+  registerField,
+}: InPersonLocationPostOfficeSearchStepProps) {
   const { inPersonURL, locationsURL, addressSearchURL } = useContext(InPersonContext);
   const [inProgress, setInProgress] = useState<boolean>(false);
   const [autoSubmit, setAutoSubmit] = useState<boolean>(false);
diff --git a/app/javascript/packages/document-capture/components/in-person-prepare-step.tsx b/app/javascript/packages/document-capture/components/in-person-prepare-step.tsx
index a8de5bbe374..2d63ec08d96 100644
--- a/app/javascript/packages/document-capture/components/in-person-prepare-step.tsx
+++ b/app/javascript/packages/document-capture/components/in-person-prepare-step.tsx
@@ -11,7 +11,7 @@ import InPersonTroubleshootingOptions from './in-person-troubleshooting-options'
 import { InPersonContext } from '../context';
 import InPersonOutageAlert from './in-person-outage-alert';
 
-function InPersonPrepareStep({ toPreviousStep }) {
+function InPersonPrepareStep({ toPreviousStep }: { toPreviousStep: () => void }) {
   const { t } = useI18n();
   const { flowPath } = useContext(UploadContext);
   const { securityAndPrivacyHowItWorksURL } = useContext(MarketingSiteContext);
diff --git a/scripts/enforce-typescript-files.mjs b/scripts/enforce-typescript-files.mjs
index 14e3d10abea..b567a000b84 100755
--- a/scripts/enforce-typescript-files.mjs
+++ b/scripts/enforce-typescript-files.mjs
@@ -14,7 +14,6 @@ const LEGACY_FILE_EXCEPTIONS = [
   'app/javascript/packages/device/index.js',
   'app/javascript/packages/document-capture/index.js',
   'app/javascript/packages/document-capture/components/acuant-capture-canvas.jsx',
-  'app/javascript/packages/document-capture/components/acuant-selfie-capture-canvas.jsx',
   'app/javascript/packages/document-capture/components/callback-on-mount.jsx',
   'app/javascript/packages/document-capture/components/file-image.jsx',
   'app/javascript/packages/document-capture/components/submission-interstitial.jsx',