Fix improper SnakeCase.

src/math/Matrix3.d.ts

@@ -1,7 +1,7 @@
 import { Matrix4 } from './Matrix4';
 import { Vector3 } from './Vector3';
 
-type Matrix3tuple = [
+type Matrix3Tuple = [
 	number, number, number,
 	number, number, number,
 	number, number, number,
@@ -131,7 +131,7 @@ export class Matrix3 implements Matrix {
 	 * @return The created or provided array.
 	 */
 	toArray( array?: number[], offset?: number ): number[];
-	toArray( array?: Matrix3tuple, offset?: 0 ): Matrix3tuple;
+	toArray( array?: Matrix3Tuple, offset?: 0 ): Matrix3Tuple;
 
 	/**
 	 * Copies he values of this matrix into the provided array-like.

src/math/Matrix4.d.ts

@@ -3,7 +3,7 @@ import { Euler } from './Euler';
 import { Quaternion } from './Quaternion';
 import { Matrix } from './Matrix3';
 
-type Matrix4tuple = [
+type Matrix4Tuple = [
 	number, number, number, number,
 	number, number, number, number,
 	number, number, number, number,
@@ -243,7 +243,7 @@ export class Matrix4 implements Matrix {
 	 * @return The created or provided array.
 	 */
 	toArray( array?: number[], offset?: number ): number[];
-	toArray( array?: Matrix4tuple, offset?: 0 ): Matrix4tuple;
+	toArray( array?: Matrix4Tuple, offset?: 0 ): Matrix4Tuple;
 
 	/**
 	 * Copies he values of this matrix into the provided array-like.

src/math/Vector3.d.ts

@@ -9,7 +9,7 @@ import { BufferAttribute } from './../core/BufferAttribute';
 import { InterleavedBufferAttribute } from './../core/InterleavedBufferAttribute';
 import { Vector } from './Vector2';
 
-type Vector3tuple = [number, number, number];
+type Vector3Tuple = [number, number, number];
 
 /**
  * 3D vector.
@@ -287,7 +287,7 @@ export class Vector3 implements Vector {
 	 * @return The created or provided array.
 	 */
 	toArray( array?: number[], offset?: number ): number[];
-	toArray( array?: Vector3tuple, offset?: 0 ): Vector3tuple;
+	toArray( array?: Vector3Tuple, offset?: 0 ): Vector3Tuple;
 
 	/**
 	 * Copies x, y and z into the provided array-like.

src/math/Vector4.d.ts

@@ -4,7 +4,7 @@ import { Matrix3 } from './Matrix3';
 import { BufferAttribute } from './../core/BufferAttribute';
 import { Vector } from './Vector2';
 
-type Vector4tuple = [number, number, number, number];
+type Vector4Tuple = [number, number, number, number];
 
 /**
  * 4D vector.
@@ -213,7 +213,7 @@ export class Vector4 implements Vector {
 	 * @return The created or provided array.
 	 */
 	toArray( array?: number[], offset?: number ): number[];
-	toArray( array?: Vector4tuple, offset?: 0 ): Vector4tuple;
+	toArray( array?: Vector4Tuple, offset?: 0 ): Vector4Tuple;
 
 	/**
 	 * Copies x, y, z and w into the provided array-like.