diff --git a/integration/global-this/global-this-test.ts b/integration/global-this/global-this-test.ts
index 0c912dd47..364c64874 100644
--- a/integration/global-this/global-this-test.ts
+++ b/integration/global-this/global-this-test.ts
@@ -1,8 +1,12 @@
-import { Object, Error } from './global-this';
+import { Object, Error, String, Boolean, Number, Array } from "./global-this";
 
-describe('global-this', () => {
-  it('generates types correctly', () => {
+describe("global-this", () => {
+  it("generates types correctly", () => {
     Object.fromPartial({});
     Error.fromPartial({});
+    String.fromPartial({});
+    Boolean.fromPartial({});
+    Number.fromPartial({});
+    Array.fromPartial({});
   });
 });
diff --git a/integration/global-this/global-this.bin b/integration/global-this/global-this.bin
index 4a39e83e8..9e29a07b9 100644
Binary files a/integration/global-this/global-this.bin and b/integration/global-this/global-this.bin differ
diff --git a/integration/global-this/global-this.proto b/integration/global-this/global-this.proto
index 949fda8e6..95f370cae 100644
--- a/integration/global-this/global-this.proto
+++ b/integration/global-this/global-this.proto
@@ -8,3 +8,19 @@ message Object {
 message Error {
   string name = 1;
 }
+
+message String {
+  string value = 1;
+}
+
+message Boolean {
+  bool value = 1;
+}
+
+message Number {
+  double value = 1;
+}
+
+message Array {
+  repeated String values = 1;
+}
diff --git a/integration/global-this/global-this.ts b/integration/global-this/global-this.ts
index 39b07ba67..fa3b2654c 100644
--- a/integration/global-this/global-this.ts
+++ b/integration/global-this/global-this.ts
@@ -11,6 +11,22 @@ export interface Error {
   name: string;
 }
 
+export interface String {
+  value: string;
+}
+
+export interface Boolean {
+  value: boolean;
+}
+
+export interface Number {
+  value: number;
+}
+
+export interface Array {
+  values: String[];
+}
+
 function createBaseObject(): Object {
   return { name: "" };
 }
@@ -47,7 +63,7 @@ export const Object = {
   },
 
   fromJSON(object: any): Object {
-    return { name: isSet(object.name) ? String(object.name) : "" };
+    return { name: isSet(object.name) ? gt.String(object.name) : "" };
   },
 
   toJSON(message: Object): unknown {
@@ -104,7 +120,7 @@ export const Error = {
   },
 
   fromJSON(object: any): Error {
-    return { name: isSet(object.name) ? String(object.name) : "" };
+    return { name: isSet(object.name) ? gt.String(object.name) : "" };
   },
 
   toJSON(message: Error): unknown {
@@ -125,10 +141,258 @@ export const Error = {
   },
 };
 
+function createBaseString(): String {
+  return { value: "" };
+}
+
+export const String = {
+  encode(message: String, writer: _m0.Writer = _m0.Writer.create()): _m0.Writer {
+    if (message.value !== "") {
+      writer.uint32(10).string(message.value);
+    }
+    return writer;
+  },
+
+  decode(input: _m0.Reader | Uint8Array, length?: number): String {
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseString();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1:
+          if (tag !== 10) {
+            break;
+          }
+
+          message.value = reader.string();
+          continue;
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skipType(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): String {
+    return { value: isSet(object.value) ? gt.String(object.value) : "" };
+  },
+
+  toJSON(message: String): unknown {
+    const obj: any = {};
+    if (message.value !== "") {
+      obj.value = message.value;
+    }
+    return obj;
+  },
+
+  create<I extends Exact<DeepPartial<String>, I>>(base?: I): String {
+    return String.fromPartial(base ?? ({} as any));
+  },
+  fromPartial<I extends Exact<DeepPartial<String>, I>>(object: I): String {
+    const message = createBaseString();
+    message.value = object.value ?? "";
+    return message;
+  },
+};
+
+function createBaseBoolean(): Boolean {
+  return { value: false };
+}
+
+export const Boolean = {
+  encode(message: Boolean, writer: _m0.Writer = _m0.Writer.create()): _m0.Writer {
+    if (message.value === true) {
+      writer.uint32(8).bool(message.value);
+    }
+    return writer;
+  },
+
+  decode(input: _m0.Reader | Uint8Array, length?: number): Boolean {
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseBoolean();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1:
+          if (tag !== 8) {
+            break;
+          }
+
+          message.value = reader.bool();
+          continue;
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skipType(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): Boolean {
+    return { value: isSet(object.value) ? gt.Boolean(object.value) : false };
+  },
+
+  toJSON(message: Boolean): unknown {
+    const obj: any = {};
+    if (message.value === true) {
+      obj.value = message.value;
+    }
+    return obj;
+  },
+
+  create<I extends Exact<DeepPartial<Boolean>, I>>(base?: I): Boolean {
+    return Boolean.fromPartial(base ?? ({} as any));
+  },
+  fromPartial<I extends Exact<DeepPartial<Boolean>, I>>(object: I): Boolean {
+    const message = createBaseBoolean();
+    message.value = object.value ?? false;
+    return message;
+  },
+};
+
+function createBaseNumber(): Number {
+  return { value: 0 };
+}
+
+export const Number = {
+  encode(message: Number, writer: _m0.Writer = _m0.Writer.create()): _m0.Writer {
+    if (message.value !== 0) {
+      writer.uint32(9).double(message.value);
+    }
+    return writer;
+  },
+
+  decode(input: _m0.Reader | Uint8Array, length?: number): Number {
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseNumber();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1:
+          if (tag !== 9) {
+            break;
+          }
+
+          message.value = reader.double();
+          continue;
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skipType(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): Number {
+    return { value: isSet(object.value) ? gt.Number(object.value) : 0 };
+  },
+
+  toJSON(message: Number): unknown {
+    const obj: any = {};
+    if (message.value !== 0) {
+      obj.value = message.value;
+    }
+    return obj;
+  },
+
+  create<I extends Exact<DeepPartial<Number>, I>>(base?: I): Number {
+    return Number.fromPartial(base ?? ({} as any));
+  },
+  fromPartial<I extends Exact<DeepPartial<Number>, I>>(object: I): Number {
+    const message = createBaseNumber();
+    message.value = object.value ?? 0;
+    return message;
+  },
+};
+
+function createBaseArray(): Array {
+  return { values: [] };
+}
+
+export const Array = {
+  encode(message: Array, writer: _m0.Writer = _m0.Writer.create()): _m0.Writer {
+    for (const v of message.values) {
+      String.encode(v!, writer.uint32(10).fork()).ldelim();
+    }
+    return writer;
+  },
+
+  decode(input: _m0.Reader | Uint8Array, length?: number): Array {
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseArray();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1:
+          if (tag !== 10) {
+            break;
+          }
+
+          message.values.push(String.decode(reader, reader.uint32()));
+          continue;
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skipType(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): Array {
+    return { values: gt.Array.isArray(object?.values) ? object.values.map((e: any) => String.fromJSON(e)) : [] };
+  },
+
+  toJSON(message: Array): unknown {
+    const obj: any = {};
+    if (message.values?.length) {
+      obj.values = message.values.map((e) => String.toJSON(e));
+    }
+    return obj;
+  },
+
+  create<I extends Exact<DeepPartial<Array>, I>>(base?: I): Array {
+    return Array.fromPartial(base ?? ({} as any));
+  },
+  fromPartial<I extends Exact<DeepPartial<Array>, I>>(object: I): Array {
+    const message = createBaseArray();
+    message.values = object.values?.map((e) => String.fromPartial(e)) || [];
+    return message;
+  },
+};
+
+declare const self: any | undefined;
+declare const window: any | undefined;
+declare const global: any | undefined;
+const gt: any = (() => {
+  if (typeof globalThis !== "undefined") {
+    return globalThis;
+  }
+  if (typeof self !== "undefined") {
+    return self;
+  }
+  if (typeof window !== "undefined") {
+    return window;
+  }
+  if (typeof global !== "undefined") {
+    return global;
+  }
+  throw "Unable to locate global object";
+})();
+
 type Builtin = Date | Function | Uint8Array | string | number | boolean | undefined;
 
 export type DeepPartial<T> = T extends Builtin ? T
-  : T extends Array<infer U> ? Array<DeepPartial<U>> : T extends ReadonlyArray<infer U> ? ReadonlyArray<DeepPartial<U>>
+  : T extends globalThis.Array<infer U> ? globalThis.Array<DeepPartial<U>>
+  : T extends ReadonlyArray<infer U> ? ReadonlyArray<DeepPartial<U>>
   : T extends {} ? { [K in keyof T]?: DeepPartial<T[K]> }
   : Partial<T>;
 
diff --git a/src/main.ts b/src/main.ts
index 86209fb3f..9033b2806 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -610,8 +610,8 @@ function makeDeepPartial(options: Options, longs: ReturnType<typeof makeLongUtil
       ${maybeExport} type DeepPartial<T> =  T extends ${Builtin}
         ? T
         ${maybeLong}
-        : T extends Array<infer U>
-        ? Array<DeepPartial<U>>
+        : T extends globalThis.Array<infer U>
+        ? globalThis.Array<DeepPartial<U>>
         : T extends ReadonlyArray<infer U>
         ? ReadonlyArray<DeepPartial<U>>${oneofCase}
         : T extends {}
@@ -1756,7 +1756,7 @@ function generateFromJson(ctx: Context, fullName: string, fullTypeName: string,
           return code`BigInt(${from})`;
         } else {
           const cstr = capitalize(basicTypeName(ctx, field, { keepValueType: true }).toCodeString([]));
-          return code`${cstr}(${from})`;
+          return code`${utils.globalThis}.${cstr}(${from})`;
         }
       } else if (isObjectId(field) && options.useMongoObjectId) {
         return code`${utils.fromJsonObjectId}(${from})`;
@@ -2161,7 +2161,7 @@ function generateFromPartial(ctx: Context, fullName: string, messageDesc: Descri
               return code`BigInt(${from} as string | number | bigint | boolean)`;
             } else {
               const cstr = capitalize(valueType.toCodeString([]));
-              return code`${cstr}(${from})`;
+              return code`${utils.globalThis}.${cstr}(${from})`;
             }
           } else if (isAnyValueType(valueField)) {
             return code`${from}`;