From 245470faf049ca130f27224bbd5e17a99b485461 Mon Sep 17 00:00:00 2001
From: Justintime50 <39606064+Justintime50@users.noreply.github.com>
Date: Mon, 10 Aug 2026 11:40:07 -0600
Subject: [PATCH 1/4] TSM-12 convert models group B to TypeScript

---
 src/models/{batch.js => batch.ts}             | 0
 src/models/{order.js => order.ts}             | 6 ++++--
 src/models/{pickup.js => pickup.ts}           | 5 +++--
 src/models/{pickup_rate.js => pickup_rate.ts} | 0
 src/models/{rate.js => rate.ts}               | 0
 src/models/{refund.js => refund.ts}           | 0
 src/models/{scan_form.js => scan_form.ts}     | 0
 7 files changed, 7 insertions(+), 4 deletions(-)
 rename src/models/{batch.js => batch.ts} (100%)
 rename src/models/{order.js => order.ts} (81%)
 rename src/models/{pickup.js => pickup.ts} (82%)
 rename src/models/{pickup_rate.js => pickup_rate.ts} (100%)
 rename src/models/{rate.js => rate.ts} (100%)
 rename src/models/{refund.js => refund.ts} (100%)
 rename src/models/{scan_form.js => scan_form.ts} (100%)

diff --git a/src/models/batch.js b/src/models/batch.ts
similarity index 100%
rename from src/models/batch.js
rename to src/models/batch.ts
diff --git a/src/models/order.js b/src/models/order.ts
similarity index 81%
rename from src/models/order.js
rename to src/models/order.ts
index 476583001..eb1077313 100644
--- a/src/models/order.js
+++ b/src/models/order.ts
@@ -25,8 +25,10 @@ export default class Order extends EasyPostObject {
    * @returns {Rate} - The lowest rate
    * @throws {FilteringError} - If no applicable rates are found
    */
-  lowestRate(carriers, services) {
-    const rates = this.rates || [];
+  lowestRate(carriers?: string[], services?: string[]): unknown {
+    const rates = ((this as Order & { rates?: unknown[] }).rates || []) as Parameters<
+      typeof Constants.Utils.getLowestRate
+    >[0];
 
     return Constants.Utils.getLowestRate(rates, carriers, services);
   }
diff --git a/src/models/pickup.js b/src/models/pickup.ts
similarity index 82%
rename from src/models/pickup.js
rename to src/models/pickup.ts
index c5087a17c..655e196e4 100644
--- a/src/models/pickup.js
+++ b/src/models/pickup.ts
@@ -28,8 +28,9 @@ export default class Pickup extends EasyPostObject {
    * @returns {Rate} - The lowest rate
    * @throws {FilteringError} - If no applicable rates are found
    */
-  lowestRate(carriers, services) {
-    const rates = this.pickup_rates || [];
+  lowestRate(carriers?: string[], services?: string[]): unknown {
+    const rates = ((this as Pickup & { pickup_rates?: unknown[] }).pickup_rates ||
+      []) as Parameters<typeof Constants.Utils.getLowestRate>[0];
 
     return Constants.Utils.getLowestRate(rates, carriers, services);
   }
diff --git a/src/models/pickup_rate.js b/src/models/pickup_rate.ts
similarity index 100%
rename from src/models/pickup_rate.js
rename to src/models/pickup_rate.ts
diff --git a/src/models/rate.js b/src/models/rate.ts
similarity index 100%
rename from src/models/rate.js
rename to src/models/rate.ts
diff --git a/src/models/refund.js b/src/models/refund.ts
similarity index 100%
rename from src/models/refund.js
rename to src/models/refund.ts
diff --git a/src/models/scan_form.js b/src/models/scan_form.ts
similarity index 100%
rename from src/models/scan_form.js
rename to src/models/scan_form.ts

From 4ef0c5fe56102901b3d84622cd69b235c2316c0f Mon Sep 17 00:00:00 2001
From: Justintime50 <39606064+Justintime50@users.noreply.github.com>
Date: Mon, 10 Aug 2026 12:07:39 -0600
Subject: [PATCH 2/4] TSM-12 migrate model field types from declarations

---
 src/models/batch.ts       | 16 ++++++++--------
 src/models/order.ts       | 23 +++++++++++++----------
 src/models/pickup.ts      | 29 ++++++++++++++++-------------
 src/models/pickup_rate.ts | 10 +++++-----
 src/models/rate.ts        | 30 +++++++++++++++---------------
 src/models/refund.ts      | 10 +++++-----
 src/models/scan_form.ts   | 14 +++++++-------
 7 files changed, 69 insertions(+), 63 deletions(-)

diff --git a/src/models/batch.ts b/src/models/batch.ts
index 8b5534e90..eaa47ccee 100644
--- a/src/models/batch.ts
+++ b/src/models/batch.ts
@@ -6,12 +6,12 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Batch extends EasyPostObject {
-  static label_url;
-  static num_shipments;
-  static pickup;
-  static reference;
-  static scan_form;
-  static shipments;
-  static state;
-  static status;
+  declare label_url?: string | null;
+  declare num_shipments: number;
+  declare pickup: Record<string, unknown>;
+  declare reference?: string | null;
+  declare scan_form: Record<string, unknown>;
+  declare shipments: Record<string, unknown>[];
+  declare state: string;
+  declare status: Record<string, number>;
 }
diff --git a/src/models/order.ts b/src/models/order.ts
index eb1077313..7d9058d92 100644
--- a/src/models/order.ts
+++ b/src/models/order.ts
@@ -7,15 +7,15 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Order extends EasyPostObject {
-  static buyer_address;
-  static from_address;
-  static is_return;
-  static messages;
-  static rates;
-  static reference;
-  static return_address;
-  static shipments;
-  static to_address;
+  declare buyer_address?: Record<string, unknown> | null;
+  declare from_address: Record<string, unknown>;
+  declare is_return?: boolean | null;
+  declare messages: Record<string, unknown>[];
+  declare rates: Parameters<typeof Constants.Utils.getLowestRate>[0];
+  declare reference?: string | null;
+  declare return_address?: Record<string, unknown> | null;
+  declare shipments: Record<string, unknown>[];
+  declare to_address: Record<string, unknown>;
 
   /**
    * Get the lowest rate for this {@link Order}.
@@ -25,7 +25,10 @@ export default class Order extends EasyPostObject {
    * @returns {Rate} - The lowest rate
    * @throws {FilteringError} - If no applicable rates are found
    */
-  lowestRate(carriers?: string[], services?: string[]): unknown {
+  lowestRate(
+    carriers?: string[],
+    services?: string[],
+  ): ReturnType<typeof Constants.Utils.getLowestRate> {
     const rates = ((this as Order & { rates?: unknown[] }).rates || []) as Parameters<
       typeof Constants.Utils.getLowestRate
     >[0];
diff --git a/src/models/pickup.ts b/src/models/pickup.ts
index 655e196e4..20137f5fa 100644
--- a/src/models/pickup.ts
+++ b/src/models/pickup.ts
@@ -7,18 +7,18 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Pickup extends EasyPostObject {
-  static address;
-  static carrier_accounts;
-  static confirmation;
-  static instructions;
-  static is_account_address;
-  static max_datetime;
-  static messages;
-  static min_datetime;
-  static pickup_rates;
-  static reference;
-  static shipment;
-  static status;
+  declare address: Record<string, unknown>;
+  declare carrier_accounts?: Record<string, unknown>[] | null;
+  declare confirmation: string;
+  declare instructions?: string | null;
+  declare is_account_address?: boolean | null;
+  declare max_datetime: string;
+  declare messages: Record<string, unknown>[];
+  declare min_datetime: string;
+  declare pickup_rates: Parameters<typeof Constants.Utils.getLowestRate>[0];
+  declare reference?: string | null;
+  declare shipment: Record<string, unknown>;
+  declare status: 'unknown' | 'scheduled' | 'canceled';
 
   /**
    * Get the lowest rate for this {@link Pickup}.
@@ -28,7 +28,10 @@ export default class Pickup extends EasyPostObject {
    * @returns {Rate} - The lowest rate
    * @throws {FilteringError} - If no applicable rates are found
    */
-  lowestRate(carriers?: string[], services?: string[]): unknown {
+  lowestRate(
+    carriers?: string[],
+    services?: string[],
+  ): ReturnType<typeof Constants.Utils.getLowestRate> {
     const rates = ((this as Pickup & { pickup_rates?: unknown[] }).pickup_rates ||
       []) as Parameters<typeof Constants.Utils.getLowestRate>[0];
 
diff --git a/src/models/pickup_rate.ts b/src/models/pickup_rate.ts
index 4e52d5765..30e16caf8 100644
--- a/src/models/pickup_rate.ts
+++ b/src/models/pickup_rate.ts
@@ -6,9 +6,9 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class PickupRate extends EasyPostObject {
-  static carrier;
-  static currency;
-  static pickup_id;
-  static rate;
-  static service;
+  declare carrier: string;
+  declare currency: string;
+  declare pickup_id: string;
+  declare rate: string;
+  declare service: string;
 }
diff --git a/src/models/rate.ts b/src/models/rate.ts
index 2b757f9e4..b7026d2dc 100644
--- a/src/models/rate.ts
+++ b/src/models/rate.ts
@@ -6,19 +6,19 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Rate extends EasyPostObject {
-  static billing_type;
-  static carrier_account_id;
-  static carrier;
-  static currency;
-  static delivery_date_guaranteed;
-  static delivery_date;
-  static delivery_days;
-  static est_delivery_days;
-  static list_currency;
-  static list_rate;
-  static rate;
-  static retail_currency;
-  static retail_rate;
-  static service;
-  static shipment_id;
+  declare billing_type: string;
+  declare carrier_account_id: string;
+  declare carrier: string;
+  declare currency: string;
+  declare delivery_date_guaranteed: boolean;
+  declare delivery_date: string;
+  declare delivery_days: number;
+  declare est_delivery_days: number;
+  declare list_currency: string;
+  declare list_rate: string;
+  declare rate: string;
+  declare retail_currency: string;
+  declare retail_rate: string;
+  declare service: string;
+  declare shipment_id: string;
 }
diff --git a/src/models/refund.ts b/src/models/refund.ts
index dab7c280d..4523d0262 100644
--- a/src/models/refund.ts
+++ b/src/models/refund.ts
@@ -6,9 +6,9 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Refund extends EasyPostObject {
-  static carrier;
-  static confirmation_number;
-  static shipment_id;
-  static status;
-  static tracking_code;
+  declare carrier: string;
+  declare confirmation_number: string;
+  declare shipment_id: string;
+  declare status: 'submitted' | 'refunded' | 'rejected';
+  declare tracking_code: string;
 }
diff --git a/src/models/scan_form.ts b/src/models/scan_form.ts
index b4e7d4312..63ac37ae8 100644
--- a/src/models/scan_form.ts
+++ b/src/models/scan_form.ts
@@ -6,11 +6,11 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class ScanForm extends EasyPostObject {
-  static address;
-  static batch_id;
-  static form_file_type;
-  static form_url;
-  static message;
-  static status;
-  static tracking_codes;
+  declare address: Record<string, unknown>;
+  declare batch_id: string;
+  declare form_file_type: string;
+  declare form_url: string;
+  declare message: string;
+  declare status: 'creating' | 'created' | 'failed';
+  declare tracking_codes: string[];
 }

From 48a029f084fcb0f1218fa8772b1dabf7aa22198d Mon Sep 17 00:00:00 2001
From: Justintime50 <39606064+Justintime50@users.noreply.github.com>
Date: Mon, 10 Aug 2026 12:22:50 -0600
Subject: [PATCH 3/4] TSM-12 make model fields nullable for first pass

---
 src/models/batch.ts       | 12 ++++++------
 src/models/order.ts       | 10 +++++-----
 src/models/pickup.ts      | 16 ++++++++--------
 src/models/pickup_rate.ts | 10 +++++-----
 src/models/rate.ts        | 30 +++++++++++++++---------------
 src/models/refund.ts      | 10 +++++-----
 src/models/scan_form.ts   | 14 +++++++-------
 7 files changed, 51 insertions(+), 51 deletions(-)

diff --git a/src/models/batch.ts b/src/models/batch.ts
index eaa47ccee..1f5afd085 100644
--- a/src/models/batch.ts
+++ b/src/models/batch.ts
@@ -7,11 +7,11 @@ import EasyPostObject from './easypost_object';
  */
 export default class Batch extends EasyPostObject {
   declare label_url?: string | null;
-  declare num_shipments: number;
-  declare pickup: Record<string, unknown>;
+  declare num_shipments: number | null;
+  declare pickup: Record<string, unknown> | null;
   declare reference?: string | null;
-  declare scan_form: Record<string, unknown>;
-  declare shipments: Record<string, unknown>[];
-  declare state: string;
-  declare status: Record<string, number>;
+  declare scan_form: Record<string, unknown> | null;
+  declare shipments: Record<string, unknown>[] | null;
+  declare state: string | null;
+  declare status: Record<string, number> | null;
 }
diff --git a/src/models/order.ts b/src/models/order.ts
index 7d9058d92..34c106a17 100644
--- a/src/models/order.ts
+++ b/src/models/order.ts
@@ -8,14 +8,14 @@ import EasyPostObject from './easypost_object';
  */
 export default class Order extends EasyPostObject {
   declare buyer_address?: Record<string, unknown> | null;
-  declare from_address: Record<string, unknown>;
+  declare from_address: Record<string, unknown> | null;
   declare is_return?: boolean | null;
-  declare messages: Record<string, unknown>[];
-  declare rates: Parameters<typeof Constants.Utils.getLowestRate>[0];
+  declare messages: Record<string, unknown>[] | null;
+  declare rates: Parameters<typeof Constants.Utils.getLowestRate>[0] | null;
   declare reference?: string | null;
   declare return_address?: Record<string, unknown> | null;
-  declare shipments: Record<string, unknown>[];
-  declare to_address: Record<string, unknown>;
+  declare shipments: Record<string, unknown>[] | null;
+  declare to_address: Record<string, unknown> | null;
 
   /**
    * Get the lowest rate for this {@link Order}.
diff --git a/src/models/pickup.ts b/src/models/pickup.ts
index 20137f5fa..215391b10 100644
--- a/src/models/pickup.ts
+++ b/src/models/pickup.ts
@@ -7,18 +7,18 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Pickup extends EasyPostObject {
-  declare address: Record<string, unknown>;
+  declare address: Record<string, unknown> | null;
   declare carrier_accounts?: Record<string, unknown>[] | null;
-  declare confirmation: string;
+  declare confirmation: string | null;
   declare instructions?: string | null;
   declare is_account_address?: boolean | null;
-  declare max_datetime: string;
-  declare messages: Record<string, unknown>[];
-  declare min_datetime: string;
-  declare pickup_rates: Parameters<typeof Constants.Utils.getLowestRate>[0];
+  declare max_datetime: string | null;
+  declare messages: Record<string, unknown>[] | null;
+  declare min_datetime: string | null;
+  declare pickup_rates: Parameters<typeof Constants.Utils.getLowestRate>[0] | null;
   declare reference?: string | null;
-  declare shipment: Record<string, unknown>;
-  declare status: 'unknown' | 'scheduled' | 'canceled';
+  declare shipment: Record<string, unknown> | null;
+  declare status: 'unknown' | 'scheduled' | 'canceled' | null;
 
   /**
    * Get the lowest rate for this {@link Pickup}.
diff --git a/src/models/pickup_rate.ts b/src/models/pickup_rate.ts
index 30e16caf8..6b9556543 100644
--- a/src/models/pickup_rate.ts
+++ b/src/models/pickup_rate.ts
@@ -6,9 +6,9 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class PickupRate extends EasyPostObject {
-  declare carrier: string;
-  declare currency: string;
-  declare pickup_id: string;
-  declare rate: string;
-  declare service: string;
+  declare carrier: string | null;
+  declare currency: string | null;
+  declare pickup_id: string | null;
+  declare rate: string | null;
+  declare service: string | null;
 }
diff --git a/src/models/rate.ts b/src/models/rate.ts
index b7026d2dc..25c9789c3 100644
--- a/src/models/rate.ts
+++ b/src/models/rate.ts
@@ -6,19 +6,19 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Rate extends EasyPostObject {
-  declare billing_type: string;
-  declare carrier_account_id: string;
-  declare carrier: string;
-  declare currency: string;
-  declare delivery_date_guaranteed: boolean;
-  declare delivery_date: string;
-  declare delivery_days: number;
-  declare est_delivery_days: number;
-  declare list_currency: string;
-  declare list_rate: string;
-  declare rate: string;
-  declare retail_currency: string;
-  declare retail_rate: string;
-  declare service: string;
-  declare shipment_id: string;
+  declare billing_type: string | null;
+  declare carrier_account_id: string | null;
+  declare carrier: string | null;
+  declare currency: string | null;
+  declare delivery_date_guaranteed: boolean | null;
+  declare delivery_date: string | null;
+  declare delivery_days: number | null;
+  declare est_delivery_days: number | null;
+  declare list_currency: string | null;
+  declare list_rate: string | null;
+  declare rate: string | null;
+  declare retail_currency: string | null;
+  declare retail_rate: string | null;
+  declare service: string | null;
+  declare shipment_id: string | null;
 }
diff --git a/src/models/refund.ts b/src/models/refund.ts
index 4523d0262..596d165ca 100644
--- a/src/models/refund.ts
+++ b/src/models/refund.ts
@@ -6,9 +6,9 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Refund extends EasyPostObject {
-  declare carrier: string;
-  declare confirmation_number: string;
-  declare shipment_id: string;
-  declare status: 'submitted' | 'refunded' | 'rejected';
-  declare tracking_code: string;
+  declare carrier: string | null;
+  declare confirmation_number: string | null;
+  declare shipment_id: string | null;
+  declare status: 'submitted' | 'refunded' | 'rejected' | null;
+  declare tracking_code: string | null;
 }
diff --git a/src/models/scan_form.ts b/src/models/scan_form.ts
index 63ac37ae8..80f525611 100644
--- a/src/models/scan_form.ts
+++ b/src/models/scan_form.ts
@@ -6,11 +6,11 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class ScanForm extends EasyPostObject {
-  declare address: Record<string, unknown>;
-  declare batch_id: string;
-  declare form_file_type: string;
-  declare form_url: string;
-  declare message: string;
-  declare status: 'creating' | 'created' | 'failed';
-  declare tracking_codes: string[];
+  declare address: Record<string, unknown> | null;
+  declare batch_id: string | null;
+  declare form_file_type: string | null;
+  declare form_url: string | null;
+  declare message: string | null;
+  declare status: 'creating' | 'created' | 'failed' | null;
+  declare tracking_codes: string[] | null;
 }

From b1e8e7a096a5fa4565a62b30d6657b8534aeef84 Mon Sep 17 00:00:00 2001
From: Justintime50 <39606064+Justintime50@users.noreply.github.com>
Date: Mon, 10 Aug 2026 12:28:51 -0600
Subject: [PATCH 4/4] TSM-12 make model fields optional and nullable for first
 pass

---
 src/models/batch.ts       | 12 ++++++------
 src/models/order.ts       | 10 +++++-----
 src/models/pickup.ts      | 16 ++++++++--------
 src/models/pickup_rate.ts | 10 +++++-----
 src/models/rate.ts        | 30 +++++++++++++++---------------
 src/models/refund.ts      | 10 +++++-----
 src/models/scan_form.ts   | 14 +++++++-------
 7 files changed, 51 insertions(+), 51 deletions(-)

diff --git a/src/models/batch.ts b/src/models/batch.ts
index 1f5afd085..7888b9ea6 100644
--- a/src/models/batch.ts
+++ b/src/models/batch.ts
@@ -7,11 +7,11 @@ import EasyPostObject from './easypost_object';
  */
 export default class Batch extends EasyPostObject {
   declare label_url?: string | null;
-  declare num_shipments: number | null;
-  declare pickup: Record<string, unknown> | null;
+  declare num_shipments?: number | null;
+  declare pickup?: Record<string, unknown> | null;
   declare reference?: string | null;
-  declare scan_form: Record<string, unknown> | null;
-  declare shipments: Record<string, unknown>[] | null;
-  declare state: string | null;
-  declare status: Record<string, number> | null;
+  declare scan_form?: Record<string, unknown> | null;
+  declare shipments?: Record<string, unknown>[] | null;
+  declare state?: string | null;
+  declare status?: Record<string, number> | null;
 }
diff --git a/src/models/order.ts b/src/models/order.ts
index 34c106a17..57767bc37 100644
--- a/src/models/order.ts
+++ b/src/models/order.ts
@@ -8,14 +8,14 @@ import EasyPostObject from './easypost_object';
  */
 export default class Order extends EasyPostObject {
   declare buyer_address?: Record<string, unknown> | null;
-  declare from_address: Record<string, unknown> | null;
+  declare from_address?: Record<string, unknown> | null;
   declare is_return?: boolean | null;
-  declare messages: Record<string, unknown>[] | null;
-  declare rates: Parameters<typeof Constants.Utils.getLowestRate>[0] | null;
+  declare messages?: Record<string, unknown>[] | null;
+  declare rates?: Parameters<typeof Constants.Utils.getLowestRate>[0] | null;
   declare reference?: string | null;
   declare return_address?: Record<string, unknown> | null;
-  declare shipments: Record<string, unknown>[] | null;
-  declare to_address: Record<string, unknown> | null;
+  declare shipments?: Record<string, unknown>[] | null;
+  declare to_address?: Record<string, unknown> | null;
 
   /**
    * Get the lowest rate for this {@link Order}.
diff --git a/src/models/pickup.ts b/src/models/pickup.ts
index 215391b10..f1e46b70b 100644
--- a/src/models/pickup.ts
+++ b/src/models/pickup.ts
@@ -7,18 +7,18 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Pickup extends EasyPostObject {
-  declare address: Record<string, unknown> | null;
+  declare address?: Record<string, unknown> | null;
   declare carrier_accounts?: Record<string, unknown>[] | null;
-  declare confirmation: string | null;
+  declare confirmation?: string | null;
   declare instructions?: string | null;
   declare is_account_address?: boolean | null;
-  declare max_datetime: string | null;
-  declare messages: Record<string, unknown>[] | null;
-  declare min_datetime: string | null;
-  declare pickup_rates: Parameters<typeof Constants.Utils.getLowestRate>[0] | null;
+  declare max_datetime?: string | null;
+  declare messages?: Record<string, unknown>[] | null;
+  declare min_datetime?: string | null;
+  declare pickup_rates?: Parameters<typeof Constants.Utils.getLowestRate>[0] | null;
   declare reference?: string | null;
-  declare shipment: Record<string, unknown> | null;
-  declare status: 'unknown' | 'scheduled' | 'canceled' | null;
+  declare shipment?: Record<string, unknown> | null;
+  declare status?: 'unknown' | 'scheduled' | 'canceled' | null;
 
   /**
    * Get the lowest rate for this {@link Pickup}.
diff --git a/src/models/pickup_rate.ts b/src/models/pickup_rate.ts
index 6b9556543..7e94394ff 100644
--- a/src/models/pickup_rate.ts
+++ b/src/models/pickup_rate.ts
@@ -6,9 +6,9 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class PickupRate extends EasyPostObject {
-  declare carrier: string | null;
-  declare currency: string | null;
-  declare pickup_id: string | null;
-  declare rate: string | null;
-  declare service: string | null;
+  declare carrier?: string | null;
+  declare currency?: string | null;
+  declare pickup_id?: string | null;
+  declare rate?: string | null;
+  declare service?: string | null;
 }
diff --git a/src/models/rate.ts b/src/models/rate.ts
index 25c9789c3..85707d487 100644
--- a/src/models/rate.ts
+++ b/src/models/rate.ts
@@ -6,19 +6,19 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Rate extends EasyPostObject {
-  declare billing_type: string | null;
-  declare carrier_account_id: string | null;
-  declare carrier: string | null;
-  declare currency: string | null;
-  declare delivery_date_guaranteed: boolean | null;
-  declare delivery_date: string | null;
-  declare delivery_days: number | null;
-  declare est_delivery_days: number | null;
-  declare list_currency: string | null;
-  declare list_rate: string | null;
-  declare rate: string | null;
-  declare retail_currency: string | null;
-  declare retail_rate: string | null;
-  declare service: string | null;
-  declare shipment_id: string | null;
+  declare billing_type?: string | null;
+  declare carrier_account_id?: string | null;
+  declare carrier?: string | null;
+  declare currency?: string | null;
+  declare delivery_date_guaranteed?: boolean | null;
+  declare delivery_date?: string | null;
+  declare delivery_days?: number | null;
+  declare est_delivery_days?: number | null;
+  declare list_currency?: string | null;
+  declare list_rate?: string | null;
+  declare rate?: string | null;
+  declare retail_currency?: string | null;
+  declare retail_rate?: string | null;
+  declare service?: string | null;
+  declare shipment_id?: string | null;
 }
diff --git a/src/models/refund.ts b/src/models/refund.ts
index 596d165ca..38c234f3c 100644
--- a/src/models/refund.ts
+++ b/src/models/refund.ts
@@ -6,9 +6,9 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class Refund extends EasyPostObject {
-  declare carrier: string | null;
-  declare confirmation_number: string | null;
-  declare shipment_id: string | null;
-  declare status: 'submitted' | 'refunded' | 'rejected' | null;
-  declare tracking_code: string | null;
+  declare carrier?: string | null;
+  declare confirmation_number?: string | null;
+  declare shipment_id?: string | null;
+  declare status?: 'submitted' | 'refunded' | 'rejected' | null;
+  declare tracking_code?: string | null;
 }
diff --git a/src/models/scan_form.ts b/src/models/scan_form.ts
index 80f525611..4c63ecd2f 100644
--- a/src/models/scan_form.ts
+++ b/src/models/scan_form.ts
@@ -6,11 +6,11 @@ import EasyPostObject from './easypost_object';
  * @extends EasyPostObject
  */
 export default class ScanForm extends EasyPostObject {
-  declare address: Record<string, unknown> | null;
-  declare batch_id: string | null;
-  declare form_file_type: string | null;
-  declare form_url: string | null;
-  declare message: string | null;
-  declare status: 'creating' | 'created' | 'failed' | null;
-  declare tracking_codes: string[] | null;
+  declare address?: Record<string, unknown> | null;
+  declare batch_id?: string | null;
+  declare form_file_type?: string | null;
+  declare form_url?: string | null;
+  declare message?: string | null;
+  declare status?: 'creating' | 'created' | 'failed' | null;
+  declare tracking_codes?: string[] | null;
 }