diff --git a/dist/bundled.d.ts b/dist/bundled.d.ts
index 2162901..e8505d5 100644
--- a/dist/bundled.d.ts
+++ b/dist/bundled.d.ts
@@ -1,16 +1,9 @@
+import { IntlSegmenterOptions, Segment } from '.';
+
 export declare const createIntlSegmenterPolyfill: () => Promise<{
-    new (locale: string, options: {
-        granularity: "word" | "grapheme";
-    }): {
-        locale: string;
-        options: {
-            granularity: "word" | "grapheme";
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
-    };
+  new (locale: string, options: IntlSegmenterOptions): {
+    locale: string;
+    options: IntlSegmenterOptions;
+    segment(input: string): Segment[];
+  };
 }>;
diff --git a/dist/bundled_cja.d.ts b/dist/bundled_cja.d.ts
index 2162901..e8505d5 100644
--- a/dist/bundled_cja.d.ts
+++ b/dist/bundled_cja.d.ts
@@ -1,16 +1,9 @@
+import { IntlSegmenterOptions, Segment } from '.';
+
 export declare const createIntlSegmenterPolyfill: () => Promise<{
-    new (locale: string, options: {
-        granularity: "word" | "grapheme";
-    }): {
-        locale: string;
-        options: {
-            granularity: "word" | "grapheme";
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
-    };
+  new (locale: string, options: IntlSegmenterOptions): {
+    locale: string;
+    options: IntlSegmenterOptions;
+    segment(input: string): Segment[];
+  };
 }>;
diff --git a/dist/index.d.ts b/dist/index.d.ts
index e96457e..75780b2 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -1,35 +1,29 @@
 import 'fast-text-encoding';
+
+export type IntlSegmenterOptions = {
+    granularity: 'word' | 'grapheme' | 'sentence'
+}
+
+export type Segment = {
+    segment: string;
+    index: number;
+    isWordLike: boolean;
+    breakType: "number" | "none" | "word" | "kana" | "ideo";
+}
+
 export declare const createIntlSegmenterPolyfillFromFactory: (wasmFactory: (imports: Object) => {
     instance: WebAssembly.Instance;
 }) => Promise<{
-    new (locale: string, options: {
-        granularity: 'word' | 'grapheme';
-    }): {
+    new (locale: string, options: IntlSegmenterOptions): {
         locale: string;
-        options: {
-            granularity: 'word' | 'grapheme';
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
+        options: IntlSegmenterOptions;
+        segment(input: string): Segment[];
     };
 }>;
 export declare const createIntlSegmenterPolyfill: (wasm: ArrayBufferLike | PromiseLike<Response>) => Promise<{
-    new (locale: string, options: {
-        granularity: 'word' | 'grapheme';
-    }): {
+    new (locale: string, options: IntlSegmenterOptions): {
         locale: string;
-        options: {
-            granularity: 'word' | 'grapheme';
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
+        options: IntlSegmenterOptions;
+        segment(input: string): Segment[];
     };
 }>;
diff --git a/package.json b/package.json
index dba263d..66f1f69 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "intl-segmenter-polyfill",
-  "version": "0.4.4",
+  "version": "0.4.5",
   "description": "This repo builds .wasm module using icu4c for breaking text into words, so that we can polyfill [Intl Segmenter Proposal](https://github.com/tc39/proposal-intl-segmenter) with full compatibility, even on browsers that do not expose v8BreakIterator api.",
   "main": "dist/index.js",
   "files": [
diff --git a/src/bundled.d.ts b/src/bundled.d.ts
index 2162901..e8505d5 100644
--- a/src/bundled.d.ts
+++ b/src/bundled.d.ts
@@ -1,16 +1,9 @@
+import { IntlSegmenterOptions, Segment } from '.';
+
 export declare const createIntlSegmenterPolyfill: () => Promise<{
-    new (locale: string, options: {
-        granularity: "word" | "grapheme";
-    }): {
-        locale: string;
-        options: {
-            granularity: "word" | "grapheme";
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
-    };
+  new (locale: string, options: IntlSegmenterOptions): {
+    locale: string;
+    options: IntlSegmenterOptions;
+    segment(input: string): Segment[];
+  };
 }>;
diff --git a/src/index.d.ts b/src/index.d.ts
index e96457e..75780b2 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1,35 +1,29 @@
 import 'fast-text-encoding';
+
+export type IntlSegmenterOptions = {
+    granularity: 'word' | 'grapheme' | 'sentence'
+}
+
+export type Segment = {
+    segment: string;
+    index: number;
+    isWordLike: boolean;
+    breakType: "number" | "none" | "word" | "kana" | "ideo";
+}
+
 export declare const createIntlSegmenterPolyfillFromFactory: (wasmFactory: (imports: Object) => {
     instance: WebAssembly.Instance;
 }) => Promise<{
-    new (locale: string, options: {
-        granularity: 'word' | 'grapheme';
-    }): {
+    new (locale: string, options: IntlSegmenterOptions): {
         locale: string;
-        options: {
-            granularity: 'word' | 'grapheme';
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
+        options: IntlSegmenterOptions;
+        segment(input: string): Segment[];
     };
 }>;
 export declare const createIntlSegmenterPolyfill: (wasm: ArrayBufferLike | PromiseLike<Response>) => Promise<{
-    new (locale: string, options: {
-        granularity: 'word' | 'grapheme';
-    }): {
+    new (locale: string, options: IntlSegmenterOptions): {
         locale: string;
-        options: {
-            granularity: 'word' | 'grapheme';
-        };
-        segment(input: string): {
-            segment: string;
-            index: number;
-            isWordLike: boolean;
-            breakType: "number" | "none" | "word" | "kana" | "ideo";
-        }[];
+        options: IntlSegmenterOptions;
+        segment(input: string): Segment[];
     };
 }>;