diff --git a/src/index.js b/src/index.js
index 413b5becc..55e5d647f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -360,18 +360,6 @@ class Dayjs {
     return new Date(this.$d)
   }
 
-  toArray() {
-    return [
-      this.$y,
-      this.$M,
-      this.$D,
-      this.$H,
-      this.$m,
-      this.$s,
-      this.$ms
-    ]
-  }
-
   toJSON() {
     return this.toISOString()
   }
@@ -383,18 +371,6 @@ class Dayjs {
     return this.$d.toISOString()
   }
 
-  toObject() {
-    return {
-      years: this.$y,
-      months: this.$M,
-      date: this.$D,
-      hours: this.$H,
-      minutes: this.$m,
-      seconds: this.$s,
-      milliseconds: this.$ms
-    }
-  }
-
   toString() {
     return this.$d.toUTCString()
   }
diff --git a/src/plugin/toArray/index.js b/src/plugin/toArray/index.js
new file mode 100644
index 000000000..9ffc16040
--- /dev/null
+++ b/src/plugin/toArray/index.js
@@ -0,0 +1,15 @@
+export default (o, c) => {
+  const proto = c.prototype
+  proto.toArray = function () {
+    return [
+      this.$y,
+      this.$M,
+      this.$D,
+      this.$H,
+      this.$m,
+      this.$s,
+      this.$ms
+    ]
+  }
+}
+
diff --git a/src/plugin/toObject/index.js b/src/plugin/toObject/index.js
new file mode 100644
index 000000000..08d22d844
--- /dev/null
+++ b/src/plugin/toObject/index.js
@@ -0,0 +1,15 @@
+export default (o, c) => {
+  const proto = c.prototype
+  proto.toObject = function () {
+    return {
+      years: this.$y,
+      months: this.$M,
+      date: this.$D,
+      hours: this.$H,
+      minutes: this.$m,
+      seconds: this.$s,
+      milliseconds: this.$ms
+    }
+  }
+}
+
diff --git a/types/index.d.ts b/types/index.d.ts
index d6f547d22..abadb4692 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -12,16 +12,6 @@ declare namespace dayjs {
   type OpUnitTypeShort = 'w'
   export type OpUnitType = UnitType | "week" | OpUnitTypeShort;
 
-  interface DayjsObject {
-    years: number
-    months: number
-    date: number
-    hours: number
-    minutes: number
-    seconds: number
-    milliseconds: number
-  }
-
   class Dayjs {
     constructor (config?: ConfigType)
 
@@ -67,14 +57,10 @@ declare namespace dayjs {
 
     toDate(): Date
 
-    toArray(): number[]
-
     toJSON(): string
 
     toISOString(): string
 
-    toObject(): DayjsObject
-
     toString(): string
 
     utcOffset(): number
diff --git a/types/plugin/toArray.d.ts b/types/plugin/toArray.d.ts
new file mode 100644
index 000000000..45f1f0c3c
--- /dev/null
+++ b/types/plugin/toArray.d.ts
@@ -0,0 +1,10 @@
+import { PluginFunc } from 'dayjs'
+
+declare const plugin: PluginFunc
+export = plugin
+
+declare module 'dayjs' {
+  interface Dayjs {
+    toArray(): number[]
+  }
+}
diff --git a/types/plugin/toObject.d.ts b/types/plugin/toObject.d.ts
new file mode 100644
index 000000000..ca12aaf00
--- /dev/null
+++ b/types/plugin/toObject.d.ts
@@ -0,0 +1,20 @@
+import { PluginFunc } from 'dayjs'
+
+declare const plugin: PluginFunc
+export = plugin
+
+interface DayjsObject {
+  years: number
+  months: number
+  date: number
+  hours: number
+  minutes: number
+  seconds: number
+  milliseconds: number
+}
+
+declare module 'dayjs' {
+  interface Dayjs {
+    toObject(): DayjsObject
+  }
+}