chore: [#1079] Continues on implementation

packages/happy-dom/src/PropertySymbol.ts

@@ -371,3 +371,4 @@ export const rotateFromVectorSelf = Symbol('rotateFromVectorSelf');
 export const flipXSelf = Symbol('flipXSelf');
 export const flipYSelf = Symbol('flipYSelf');
 export const invertSelf = Symbol('invertSelf');
+export const getLength = Symbol('getLength');

packages/happy-dom/src/dom/DOMPoint.ts

@@ -1,6 +1,5 @@
 import DOMPointReadOnly from './DOMPointReadOnly.js';
 import * as PropertySymbol from '../PropertySymbol.js';
-import IDOMPointInit from './IDOMPointInit.js';
 
 /**
  * DOM Point.
@@ -79,14 +78,4 @@ export default class DOMPoint extends DOMPointReadOnly {
 	public get w(): number {
 		return this[PropertySymbol.w];
 	}
-
-	/**
-	 * Returns a new DOMPoint object.
-	 *
-	 * @param other
-	 * @returns Cloned object.
-	 */
-	public static fromPoint(other: IDOMPointInit): DOMPoint {
-		return new DOMPoint(other.x, other.y, other.z, other.w);
-	}
 }

packages/happy-dom/src/dom/DOMPointReadOnly.ts

@@ -80,10 +80,18 @@ export default class DOMPointReadOnly implements IDOMPointInit {
 	/**
 	 * Returns a new DOMPointReadOnly object.
 	 *
-	 * @param other
+	 * @param [otherPoint] Other point.
 	 * @returns Cloned object.
 	 */
-	public static fromPoint(other: IDOMPointInit): DOMPointReadOnly {
-		return new DOMPointReadOnly(other.x, other.y, other.z, other.w);
+	public static fromPoint(otherPoint?: IDOMPointInit): DOMPointReadOnly {
+		if (!otherPoint) {
+			return new this();
+		}
+		return new this(
+			otherPoint.x ?? null,
+			otherPoint.y ?? null,
+			otherPoint.z ?? null,
+			otherPoint.w ?? null
+		);
 	}
 }

packages/happy-dom/src/dom/DOMRectList.ts

@@ -1,11 +1,28 @@
 import DOMRect from './DOMRect.js';
+import * as PropertySymbol from '../PropertySymbol.js';
 
 /**
  * DOM Rect List.
  *
  * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMRectList
  */
 export default class DOMRectList extends Array<DOMRect> {
+	/**
+	 * Constructor.
+	 *
+	 * @param illegalConstructorSymbol Illegal constructor symbol.
+	 */
+	constructor(illegalConstructorSymbol: symbol) {
+		super();
+		// "illegalConstructorSymbol" can be "1" when calling the "splice()" method
+		if (
+			<number>(<unknown>illegalConstructorSymbol) !== 1 &&
+			illegalConstructorSymbol !== PropertySymbol.illegalConstructor
+		) {
+			throw new TypeError('Illegal constructor');
+		}
+	}
+
 	/**
 	 * Returns item by index.
 	 *

packages/happy-dom/src/dom/DOMStringMap.ts

@@ -14,9 +14,14 @@ export default class DOMStringMap {
 	/**
 	 * Constructor.
 	 *
+	 * @param illegalConstructorSymbol Illegal constructor symbol.
 	 * @param element Element.
 	 */
-	constructor(element: Element) {
+	constructor(illegalConstructorSymbol: symbol, element: Element) {
+		if (illegalConstructorSymbol !== PropertySymbol.illegalConstructor) {
+			throw new TypeError('Illegal constructor');
+		}
+
 		// Documentation for Proxy:
 		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy
 		return new Proxy(this, {

packages/happy-dom/src/dom/dom-matrix/DOMMatrix.ts

@@ -368,8 +368,8 @@ export default class DOMMatrix extends DOMMatrixReadOnly {
 	 * @returns Self.
 	 */
 	public scaleSelf(
-		scaleX = 1,
-		scaleY = 1,
+		scaleX?: number,
+		scaleY?: number,
 		scaleZ = 1,
 		originX = 0,
 		originY = 0,
@@ -406,49 +406,41 @@ export default class DOMMatrix extends DOMMatrixReadOnly {
 	}
 
 	/**
-	 * Set self to be multiplied by each of 3 rotation matrices about the major axes, first X, then Y, then Z.
+	 * Sets self to be multiplied by a rotation matrix with the given axis and `angle`.
 	 *
-	 * @param [x] X component of the rotation, or Z if Y and Z are null.
-	 * @param [y] Y component of the rotation value.
-	 * @param [z] Z component of the rotation value.
+	 * @param [x] The X component of the axis vector.
+	 * @param [y] The Y component of the axis vector.
+	 * @param [z] The Z component of the axis vector.
+	 * @param [angle] Angle of rotation about the axis vector, in degrees.
 	 * @returns Self.
 	 */
-	public rotateSelf(x = 0, y?: number, z?: number): DOMMatrixReadOnly {
-		this[PropertySymbol.rotateSelf](x, y, z);
+	public rotateAxisAngleSelf(x = 0, y = 0, z = 0, angle = 0): DOMMatrixReadOnly {
+		this[PropertySymbol.rotateAxisAngleSelf](x, y, z, angle);
 		return this;
 	}
 
 	/**
-	 * Sets self to be multiplied by a rotation matrix with the given axis and `angle`.
+	 * Set self to be multiplied by each of 3 rotation matrices about the major axes, first X, then Y, then Z.
 	 *
-	 * @param [x] The X component of the axis vector.
-	 * @param [y] The Y component of the axis vector.
-	 * @param [z] The Z component of the axis vector.
-	 * @param [angle] Angle of rotation about the axis vector, in degrees.
+	 * @param [x] X component of the rotation, or Z if Y and Z are null.
+	 * @param [y] Y component of the rotation value.
+	 * @param [z] Z component of the rotation value.
 	 * @returns Self.
 	 */
-	public rotateAxisAngleSelf(
-		x?: number,
-		y?: number,
-		z?: number,
-		angle?: number
-	): DOMMatrixReadOnly {
-		this[PropertySymbol.rotateAxisAngleSelf](x, y, z, angle);
+	public rotateSelf(x = 0, y?: number, z?: number): DOMMatrixReadOnly {
+		this[PropertySymbol.rotateSelf](x, y, z);
 		return this;
 	}
 
 	/**
 	 * Sets self to be multiplied by a skew matrix along the X axis by the given angle.
 	 *
-	 * Not implemented in Happy DOM yet.
-	 *
-	 * @param [_x] X-Axis skew.
-	 * @param [_y] Y-Axis skew.
+	 * @param [x] X-Axis skew.
+	 * @param [y] Y-Axis skew.
 	 */
-	public rotateFromVectorSelf(_x: number = 0, _y: number = 0): DOMMatrixReadOnly {
-		throw new TypeError(
-			`Failed to execute 'rotateFromVectorSelf' on '${this.constructor.name}': Method has not been implemented in Happy DOM yet.`
-		);
+	public rotateFromVectorSelf(x = 0, y = 0): DOMMatrixReadOnly {
+		this[PropertySymbol.rotateFromVectorSelf](x, y);
+		return this;
 	}
 
 	/**
@@ -477,26 +469,23 @@ export default class DOMMatrix extends DOMMatrixReadOnly {
 	 * Set self to be specified as matrix flipped on X-axis.
 	 */
 	public flipXSelf(): DOMMatrixReadOnly {
-		throw new TypeError(
-			`Failed to execute 'flipXSelf' on '${this.constructor.name}': Method has not been implemented in Happy DOM yet.`
-		);
+		this[PropertySymbol.flipXSelf]();
+		return this;
 	}
 
 	/**
 	 * Set self to be specified as matrix flipped on Y-axis.
 	 */
 	public flipYSelf(): DOMMatrixReadOnly {
-		throw new TypeError(
-			`Failed to execute 'flipYSelf' on '${this.constructor.name}': Method has not been implemented in Happy DOM yet.`
-		);
+		this[PropertySymbol.flipYSelf]();
+		return this;
 	}
 
 	/**
 	 * Set self to be specified as matrix inverted.
 	 */
 	public invertSelf(): DOMMatrixReadOnly {
-		throw new TypeError(
-			`Failed to execute 'invertSelf' on '${this.constructor.name}': Method has not been implemented in Happy DOM yet.`
-		);
+		this[PropertySymbol.invertSelf]();
+		return this;
 	}
 }