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/*!
* DOMMatrix v1.0.3 (https://thednp.github.io/dommatrix/)
* Copyright 2022 © thednp
* Licensed under MIT (https://github.com/thednp/DOMMatrix/blob/master/LICENSE)
*/
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.CSSMatrix = factory());
})(this, (function () { 'use strict';

  // DOMMatrix Static methods
  // * `fromArray` is a more simple implementation, should also accept Float[32/64]Array;
  // * `fromMatrix` load values from another CSSMatrix/DOMMatrix instance or JSON object;
  // * `fromString` parses and loads values from any valid CSS transform string (TransformList).

  /**
   * Creates a new mutable `CSSMatrix` instance given an array of 16/6 floating point values.
   * This static method invalidates arrays that contain non-number elements.
   *
   * If the array has six values, the result is a 2D matrix; if the array has 16 values,
   * the result is a 3D matrix. Otherwise, a TypeError exception is thrown.
   *
   * @param {CSSM.matrix | CSSM.matrix3d} array an `Array` to feed values from.
   * @return {CSSMatrix} the resulted matrix.
   */
  function fromArray(array) {
    var m = new CSSMatrix();
    var a = Array.from(array);

    if (!a.every(function (n) { return !Number.isNaN(n); })) {
      throw TypeError(("CSSMatrix: \"" + array + "\" must only have numbers."));
    }
    if (a.length === 16) {
      var m11 = a[0];
      var m12 = a[1];
      var m13 = a[2];
      var m14 = a[3];
      var m21 = a[4];
      var m22 = a[5];
      var m23 = a[6];
      var m24 = a[7];
      var m31 = a[8];
      var m32 = a[9];
      var m33 = a[10];
      var m34 = a[11];
      var m41 = a[12];
      var m42 = a[13];
      var m43 = a[14];
      var m44 = a[15];

      m.m11 = m11;
      m.a = m11;

      m.m21 = m21;
      m.c = m21;

      m.m31 = m31;

      m.m41 = m41;
      m.e = m41;

      m.m12 = m12;
      m.b = m12;

      m.m22 = m22;
      m.d = m22;

      m.m32 = m32;

      m.m42 = m42;
      m.f = m42;

      m.m13 = m13;
      m.m23 = m23;
      m.m33 = m33;
      m.m43 = m43;
      m.m14 = m14;
      m.m24 = m24;
      m.m34 = m34;
      m.m44 = m44;
    } else if (a.length === 6) {
      var M11 = a[0];
      var M12 = a[1];
      var M21 = a[2];
      var M22 = a[3];
      var M41 = a[4];
      var M42 = a[5];

      m.m11 = M11;
      m.a = M11;

      m.m12 = M12;
      m.b = M12;

      m.m21 = M21;
      m.c = M21;

      m.m22 = M22;
      m.d = M22;

      m.m41 = M41;
      m.e = M41;

      m.m42 = M42;
      m.f = M42;
    } else {
      throw new TypeError('CSSMatrix: expecting an Array of 6/16 values.');
    }
    return m;
  }

  /**
   * Creates a new mutable `CSSMatrix` instance given an existing matrix or a
   * `DOMMatrix` instance which provides the values for its properties.
   *
   * @param {CSSMatrix | DOMMatrix | CSSM.JSONMatrix} m the source matrix to feed values from.
   * @return {CSSMatrix} the resulted matrix.
   */
  function fromMatrix(m) {
    var keys = Object.keys(new CSSMatrix());
    if (typeof m === 'object' && keys.every(function (k) { return k in m; })) {
      return fromArray(
        [m.m11, m.m12, m.m13, m.m14,
          m.m21, m.m22, m.m23, m.m24,
          m.m31, m.m32, m.m33, m.m34,
          m.m41, m.m42, m.m43, m.m44]
      );
    }
    throw TypeError(("CSSMatrix: \"" + (JSON.stringify(m)) + "\" is not a DOMMatrix / CSSMatrix / JSON compatible object."));
  }

  /**
   * Creates a new mutable `CSSMatrix` given any valid CSS transform string,
   * or what we call `TransformList`:
   *
   * * `matrix(a, b, c, d, e, f)` - valid matrix() transform function
   * * `matrix3d(m11, m12, m13, ...m44)` - valid matrix3d() transform function
   * * `translate(tx, ty) rotateX(alpha)` - any valid transform function(s)
   *
   * @copyright thednp © 2021
   *
   * @param {string} source valid CSS transform string syntax.
   * @return {CSSMatrix} the resulted matrix.
   */
  function fromString(source) {
    if (typeof source !== 'string') {
      throw TypeError(("CSSMatrix: \"" + source + "\" is not a string."));
    }
    var str = String(source).replace(/\s/g, '');
    var m = new CSSMatrix();
    var invalidStringError = "CSSMatrix: invalid transform string \"" + source + "\"";

    // const px = ['perspective'];
    // const length = ['translate', 'translate3d', 'translateX', 'translateY', 'translateZ'];
    // const deg = ['rotate', 'rotate3d', 'rotateX', 'rotateY', 'rotateZ', 'skew', 'skewX', 'skewY'];
    // const abs = ['scale', 'scale3d', 'matrix', 'matrix3d'];
    // const transformFunctions = px.concat(length, deg, abs);

    str.split(')').filter(function (f) { return f; }).forEach(function (tf) {
      var ref = tf.split('(');
      var prop = ref[0];
      var value = ref[1];

      // invalidate empty string
      if (!value) { throw TypeError(invalidStringError); }

      var components = value.split(',')
        .map(function (n) { return (n.includes('rad') ? parseFloat(n) * (180 / Math.PI) : parseFloat(n)); });

      var x = components[0];
      var y = components[1];
      var z = components[2];
      var a = components[3];
      var xyz = [x, y, z];
      var xyza = [x, y, z, a];

      // single number value expected
      if (prop === 'perspective' && x && [y, z].every(function (n) { return n === undefined; })) {
        m.m34 = -1 / x;
      // 6/16 number values expected
      } else if (prop.includes('matrix') && [6, 16].includes(components.length)
        && components.every(function (n) { return !Number.isNaN(+n); })) {
        var values = components.map(function (n) { return (Math.abs(n) < 1e-6 ? 0 : n); });
        // @ts-ignore -- conditions should suffice
        m = m.multiply(fromArray(values));
      // 3 values expected
      } else if (prop === 'translate3d' && xyz.every(function (n) { return !Number.isNaN(+n); })) {
        m = m.translate(x, y, z);
      // single/double number value(s) expected
      } else if (prop === 'translate' && x && z === undefined) {
        m = m.translate(x, y || 0, 0);
      // all 4 values expected
      } else if (prop === 'rotate3d' && xyza.every(function (n) { return !Number.isNaN(+n); }) && a) {
        m = m.rotateAxisAngle(x, y, z, a);
      // single value expected
      } else if (prop === 'rotate' && x && [y, z].every(function (n) { return n === undefined; })) {
        m = m.rotate(0, 0, x);
      // 3 values expected
      } else if (prop === 'scale3d' && xyz.every(function (n) { return !Number.isNaN(+n); }) && xyz.some(function (n) { return n !== 1; })) {
        m = m.scale(x, y, z);
      // single value expected
      } else if (prop === 'scale' && !Number.isNaN(x) && x !== 1 && z === undefined) {
        var nosy = Number.isNaN(+y);
        var sy = nosy ? x : y;
        m = m.scale(x, sy, 1);
      // single/double value expected
      } else if (prop === 'skew' && (x || (!Number.isNaN(x) && y)) && z === undefined) {
        m = m.skew(x, y || 0);
      } else if (/[XYZ]/.test(prop) && x && [y, z].every(function (n) { return n === undefined; }) // a single value expected
        && ['translate', 'rotate', 'scale', 'skew'].some(function (p) { return prop.includes(p); })) {
        if (['skewX', 'skewY'].includes(prop)) {
          // @ts-ignore unfortunately
          m = m[prop](x);
        } else {
          var fn = prop.replace(/[XYZ]/, '');
          var axis = prop.replace(fn, '');
          var idx = ['X', 'Y', 'Z'].indexOf(axis);
          var def = fn === 'scale' ? 1 : 0;
          var axeValues = [
            idx === 0 ? x : def,
            idx === 1 ? x : def,
            idx === 2 ? x : def];
          // @ts-ignore unfortunately
          m = m[fn].apply(m, axeValues);
        }
      } else {
        throw TypeError(invalidStringError);
      }
    });

    return m;
  }

  /**
   * Returns an *Array* containing elements which comprise the matrix.
   * The method can return either the 16 elements or the 6 elements
   * depending on the value of the `is2D` parameter.
   *
   * @param {CSSMatrix | DOMMatrix | CSSM.JSONMatrix} m the source matrix to feed values from.
   * @param {boolean=} is2D *Array* representation of the matrix
   * @return {CSSM.matrix | CSSM.matrix3d} an *Array* representation of the matrix
   */
  function toArray(m, is2D) {
    if (is2D) {
      return [m.a, m.b, m.c, m.d, m.e, m.f];
    }
    return [m.m11, m.m12, m.m13, m.m14,
      m.m21, m.m22, m.m23, m.m24,
      m.m31, m.m32, m.m33, m.m34,
      m.m41, m.m42, m.m43, m.m44];
  }

  // Transform Functions
  // https://www.w3.org/TR/css-transforms-1/#transform-functions

  /**
   * Creates a new `CSSMatrix` for the translation matrix and returns it.
   * This method is equivalent to the CSS `translate3d()` function.
   *
   * https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/translate3d
   *
   * @param {number} x the `x-axis` position.
   * @param {number} y the `y-axis` position.
   * @param {number} z the `z-axis` position.
   * @return {CSSMatrix} the resulted matrix.
   */
  function Translate(x, y, z) {
    var m = new CSSMatrix();
    m.m41 = x;
    m.e = x;
    m.m42 = y;
    m.f = y;
    m.m43 = z;
    return m;
  }

  /**
   * Creates a new `CSSMatrix` for the rotation matrix and returns it.
   *
   * http://en.wikipedia.org/wiki/Rotation_matrix
   *
   * @param {number} rx the `x-axis` rotation.
   * @param {number} ry the `y-axis` rotation.
   * @param {number} rz the `z-axis` rotation.
   * @return {CSSMatrix} the resulted matrix.
   */
  function Rotate(rx, ry, rz) {
    var m = new CSSMatrix();
    var degToRad = Math.PI / 180;
    var radX = rx * degToRad;
    var radY = ry * degToRad;
    var radZ = rz * degToRad;

    // minus sin() because of right-handed system
    var cosx = Math.cos(radX);
    var sinx = -Math.sin(radX);
    var cosy = Math.cos(radY);
    var siny = -Math.sin(radY);
    var cosz = Math.cos(radZ);
    var sinz = -Math.sin(radZ);

    var m11 = cosy * cosz;
    var m12 = -cosy * sinz;

    m.m11 = m11;
    m.a = m11;

    m.m12 = m12;
    m.b = m12;

    m.m13 = siny;

    var m21 = sinx * siny * cosz + cosx * sinz;
    m.m21 = m21;
    m.c = m21;

    var m22 = cosx * cosz - sinx * siny * sinz;
    m.m22 = m22;
    m.d = m22;

    m.m23 = -sinx * cosy;

    m.m31 = sinx * sinz - cosx * siny * cosz;
    m.m32 = sinx * cosz + cosx * siny * sinz;
    m.m33 = cosx * cosy;

    return m;
  }

  /**
   * Creates a new `CSSMatrix` for the rotation matrix and returns it.
   * This method is equivalent to the CSS `rotate3d()` function.
   *
   * https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/rotate3d
   *
   * @param {number} x the `x-axis` vector length.
   * @param {number} y the `y-axis` vector length.
   * @param {number} z the `z-axis` vector length.
   * @param {number} alpha the value in degrees of the rotation.
   * @return {CSSMatrix} the resulted matrix.
   */
  function RotateAxisAngle(x, y, z, alpha) {
    var m = new CSSMatrix();
    var length = Math.sqrt(x * x + y * y + z * z);

    if (length === 0) {
      // bad vector length, return identity
      return m;
    }

    var X = x / length;
    var Y = y / length;
    var Z = z / length;

    var angle = alpha * (Math.PI / 360);
    var sinA = Math.sin(angle);
    var cosA = Math.cos(angle);
    var sinA2 = sinA * sinA;
    var x2 = X * X;
    var y2 = Y * Y;
    var z2 = Z * Z;

    var m11 = 1 - 2 * (y2 + z2) * sinA2;
    m.m11 = m11;
    m.a = m11;

    var m12 = 2 * (X * Y * sinA2 + Z * sinA * cosA);
    m.m12 = m12;
    m.b = m12;

    m.m13 = 2 * (X * Z * sinA2 - Y * sinA * cosA);

    var m21 = 2 * (Y * X * sinA2 - Z * sinA * cosA);
    m.m21 = m21;
    m.c = m21;

    var m22 = 1 - 2 * (z2 + x2) * sinA2;
    m.m22 = m22;
    m.d = m22;

    m.m23 = 2 * (Y * Z * sinA2 + X * sinA * cosA);
    m.m31 = 2 * (Z * X * sinA2 + Y * sinA * cosA);
    m.m32 = 2 * (Z * Y * sinA2 - X * sinA * cosA);
    m.m33 = 1 - 2 * (x2 + y2) * sinA2;

    return m;
  }

  /**
   * Creates a new `CSSMatrix` for the scale matrix and returns it.
   * This method is equivalent to the CSS `scale3d()` function, except it doesn't
   * accept {x, y, z} transform origin parameters.
   *
   * https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/scale3d
   *
   * @param {number} x the `x-axis` scale.
   * @param {number} y the `y-axis` scale.
   * @param {number} z the `z-axis` scale.
   * @return {CSSMatrix} the resulted matrix.
   */
  function Scale(x, y, z) {
    var m = new CSSMatrix();
    m.m11 = x;
    m.a = x;

    m.m22 = y;
    m.d = y;

    m.m33 = z;
    return m;
  }

  /**
   * Creates a new `CSSMatrix` for the shear of both the `x-axis` and`y-axis`
   * matrix and returns it. This method is equivalent to the CSS `skew()` function.
   *
   * https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/skew
   *
   * @param {number} angleX the X-angle in degrees.
   * @param {number} angleY the Y-angle in degrees.
   * @return {CSSMatrix} the resulted matrix.
   */
  function Skew(angleX, angleY) {
    var m = new CSSMatrix();
    if (angleX) {
      var radX = (angleX * Math.PI) / 180;
      var tX = Math.tan(radX);
      m.m21 = tX;
      m.c = tX;
    }
    if (angleY) {
      var radY = (angleY * Math.PI) / 180;
      var tY = Math.tan(radY);
      m.m12 = tY;
      m.b = tY;
    }
    return m;
  }

  /**
   * Creates a new `CSSMatrix` for the shear of the `x-axis` rotation matrix and
   * returns it. This method is equivalent to the CSS `skewX()` function.
   *
   * https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/skewX
   *
   * @param {number} angle the angle in degrees.
   * @return {CSSMatrix} the resulted matrix.
   */
  function SkewX(angle) {
    return Skew(angle, 0);
  }

  /**
   * Creates a new `CSSMatrix` for the shear of the `y-axis` rotation matrix and
   * returns it. This method is equivalent to the CSS `skewY()` function.
   *
   * https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/skewY
   *
   * @param {number} angle the angle in degrees.
   * @return {CSSMatrix} the resulted matrix.
   */
  function SkewY(angle) {
    return Skew(0, angle);
  }

  /**
   * Creates a new `CSSMatrix` resulted from the multiplication of two matrixes
   * and returns it. Both matrixes are not changed.
   *
   * @param {CSSMatrix | DOMMatrix | CSSM.JSONMatrix} m1 the first matrix.
   * @param {CSSMatrix | DOMMatrix | CSSM.JSONMatrix} m2 the second matrix.
   * @return {CSSMatrix} the resulted matrix.
   */
  function Multiply(m1, m2) {
    var m11 = m2.m11 * m1.m11 + m2.m12 * m1.m21 + m2.m13 * m1.m31 + m2.m14 * m1.m41;
    var m12 = m2.m11 * m1.m12 + m2.m12 * m1.m22 + m2.m13 * m1.m32 + m2.m14 * m1.m42;
    var m13 = m2.m11 * m1.m13 + m2.m12 * m1.m23 + m2.m13 * m1.m33 + m2.m14 * m1.m43;
    var m14 = m2.m11 * m1.m14 + m2.m12 * m1.m24 + m2.m13 * m1.m34 + m2.m14 * m1.m44;

    var m21 = m2.m21 * m1.m11 + m2.m22 * m1.m21 + m2.m23 * m1.m31 + m2.m24 * m1.m41;
    var m22 = m2.m21 * m1.m12 + m2.m22 * m1.m22 + m2.m23 * m1.m32 + m2.m24 * m1.m42;
    var m23 = m2.m21 * m1.m13 + m2.m22 * m1.m23 + m2.m23 * m1.m33 + m2.m24 * m1.m43;
    var m24 = m2.m21 * m1.m14 + m2.m22 * m1.m24 + m2.m23 * m1.m34 + m2.m24 * m1.m44;

    var m31 = m2.m31 * m1.m11 + m2.m32 * m1.m21 + m2.m33 * m1.m31 + m2.m34 * m1.m41;
    var m32 = m2.m31 * m1.m12 + m2.m32 * m1.m22 + m2.m33 * m1.m32 + m2.m34 * m1.m42;
    var m33 = m2.m31 * m1.m13 + m2.m32 * m1.m23 + m2.m33 * m1.m33 + m2.m34 * m1.m43;
    var m34 = m2.m31 * m1.m14 + m2.m32 * m1.m24 + m2.m33 * m1.m34 + m2.m34 * m1.m44;

    var m41 = m2.m41 * m1.m11 + m2.m42 * m1.m21 + m2.m43 * m1.m31 + m2.m44 * m1.m41;
    var m42 = m2.m41 * m1.m12 + m2.m42 * m1.m22 + m2.m43 * m1.m32 + m2.m44 * m1.m42;
    var m43 = m2.m41 * m1.m13 + m2.m42 * m1.m23 + m2.m43 * m1.m33 + m2.m44 * m1.m43;
    var m44 = m2.m41 * m1.m14 + m2.m42 * m1.m24 + m2.m43 * m1.m34 + m2.m44 * m1.m44;

    return fromArray(
      [m11, m12, m13, m14,
        m21, m22, m23, m24,
        m31, m32, m33, m34,
        m41, m42, m43, m44]
    );
  }

  /**
   * Creates and returns a new `DOMMatrix` compatible instance
   * with equivalent instance.
   * @class CSSMatrix
   *
   * @author thednp <https://github.com/thednp/DOMMatrix/>
   * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMMatrix
   */

  var CSSMatrix = function CSSMatrix() {
    var args = [], len = arguments.length;
    while ( len-- ) args[ len ] = arguments[ len ];

    var m = this;
    // array 6
    m.a = 1; m.b = 0;
    m.c = 0; m.d = 1;
    m.e = 0; m.f = 0;
    // array 16
    m.m11 = 1; m.m12 = 0; m.m13 = 0; m.m14 = 0;
    m.m21 = 0; m.m22 = 1; m.m23 = 0; m.m24 = 0;
    m.m31 = 0; m.m32 = 0; m.m33 = 1; m.m34 = 0;
    m.m41 = 0; m.m42 = 0; m.m43 = 0; m.m44 = 1;

    if (args.length) {
      var ARGS = [16, 6].some(function (l) { return l === args.length; }) ? args : args[0];

      return m.setMatrixValue(ARGS);
    }
    return m;
  };

  var prototypeAccessors = { isIdentity: { configurable: true },is2D: { configurable: true } };

  /**
   * A `Boolean` whose value is `true` if the matrix is the identity matrix. The identity
   * matrix is one in which every value is 0 except those on the main diagonal from top-left
   * to bottom-right corner (in other words, where the offsets in each direction are equal).
   *
   * @return {boolean} the current property value
   */
  prototypeAccessors.isIdentity.get = function () {
    var m = this;
    return (m.m11 === 1 && m.m12 === 0 && m.m13 === 0 && m.m14 === 0
            && m.m21 === 0 && m.m22 === 1 && m.m23 === 0 && m.m24 === 0
            && m.m31 === 0 && m.m32 === 0 && m.m33 === 1 && m.m34 === 0
            && m.m41 === 0 && m.m42 === 0 && m.m43 === 0 && m.m44 === 1);
  };

  /**
   * A `Boolean` flag whose value is `true` if the matrix was initialized as a 2D matrix
   * and `false` if the matrix is 3D.
   *
   * @return {boolean} the current property value
   */
  prototypeAccessors.is2D.get = function () {
    var m = this;
    return (m.m31 === 0 && m.m32 === 0 && m.m33 === 1 && m.m34 === 0 && m.m43 === 0 && m.m44 === 1);
  };

  /**
   * The `setMatrixValue` method replaces the existing matrix with one computed
   * in the browser. EG: `matrix(1,0.25,-0.25,1,0,0)`
   *
   * The method accepts any *Array* values, the result of
   * `DOMMatrix` instance method `toFloat64Array()` / `toFloat32Array()` calls
   *or `CSSMatrix` instance method `toArray()`.
   *
   * This method expects valid *matrix()* / *matrix3d()* string values, as well
   * as other transform functions like *translateX(10px)*.
   *
   * @param {string | CSSM.matrix | CSSM.matrix3d | CSSMatrix | DOMMatrix | CSSM.JSONMatrix} source
   * @return {CSSMatrix} the matrix instance
   */
  CSSMatrix.prototype.setMatrixValue = function setMatrixValue (source) {
    var m = this;

    // CSS transform string source - TransformList first
    if (typeof source === 'string' && source.length && source !== 'none') {
      return fromString(source);
    }
    // [Arguments list | Array] come second
    if ([Array, Float64Array, Float32Array].some(function (a) { return source instanceof a; })) {
      // @ts-ignore
      return fromArray(source);
    }
    // new CSSMatrix(CSSMatrix | DOMMatrix | JSON) last
    if ([CSSMatrix, DOMMatrix, Object].some(function (a) { return source instanceof a; })) {
      // @ts-ignore
      return fromMatrix(source);
    }

    return m;
  };

  /**
   * Returns a *Float32Array* containing elements which comprise the matrix.
   * The method can return either the 16 elements or the 6 elements
   * depending on the value of the `is2D` parameter.
   *
   * @param {boolean=} is2D *Array* representation of the matrix
   * @return {Float32Array} an *Array* representation of the matrix
   */
  CSSMatrix.prototype.toFloat32Array = function toFloat32Array (is2D) {
    return Float32Array.from(toArray(this, is2D));
  };

  /**
   * Returns a *Float64Array* containing elements which comprise the matrix.
   * The method can return either the 16 elements or the 6 elements
   * depending on the value of the `is2D` parameter.
   *
   * @param {boolean=} is2D *Array* representation of the matrix
   * @return {Float64Array} an *Array* representation of the matrix
   */
  CSSMatrix.prototype.toFloat64Array = function toFloat64Array (is2D) {
    return Float64Array.from(toArray(this, is2D));
  };

  /**
   * Creates and returns a string representation of the matrix in `CSS` matrix syntax,
   * using the appropriate `CSS` matrix notation.
   *
   * matrix3d *matrix3d(m11, m12, m13, m14, m21, ...)*
   * matrix *matrix(a, b, c, d, e, f)*
   *
   * @return {string} a string representation of the matrix
   */
  CSSMatrix.prototype.toString = function toString () {
    var m = this;
    var is2D = m.is2D;
    var values = m.toFloat64Array(is2D).join(', ');
    var type = is2D ? 'matrix' : 'matrix3d';
    return (type + "(" + values + ")");
  };

  /**
   * Returns a JSON representation of the `CSSMatrix` instance, a standard *Object*
   * that includes `{a,b,c,d,e,f}` and `{m11,m12,m13,..m44}` properties as well
   * as the `is2D` & `isIdentity` properties.
   *
   * The result can also be used as a second parameter for the `fromMatrix` static method
   * to load values into another matrix instance.
   *
   * @return {CSSM.JSONMatrix} an *Object* with all matrix values.
   */
  CSSMatrix.prototype.toJSON = function toJSON () {
    var m = this;
    var is2D = m.is2D;
      var isIdentity = m.isIdentity;
    return Object.assign({}, m, {is2D: is2D, isIdentity: isIdentity});
  };

  /**
   * The Multiply method returns a new CSSMatrix which is the result of this
   * matrix multiplied by the passed matrix, with the passed matrix to the right.
   * This matrix is not modified.
   *
   * @param {CSSMatrix | DOMMatrix | CSSM.JSONMatrix} m2 CSSMatrix
   * @return {CSSMatrix} The resulted matrix.
   */
  CSSMatrix.prototype.multiply = function multiply (m2) {
    return Multiply(this, m2);
  };

  /**
   * The translate method returns a new matrix which is this matrix post
   * multiplied by a translation matrix containing the passed values. If the z
   * component is undefined, a 0 value is used in its place. This matrix is not
   * modified.
   *
   * @param {number} x X component of the translation value.
   * @param {number=} y Y component of the translation value.
   * @param {number=} z Z component of the translation value.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.translate = function translate (x, y, z) {
    var X = x;
    var Y = y;
    var Z = z;
    if (Y === undefined) { Y = 0; }
    if (Z === undefined) { Z = 0; }
    return Multiply(this, Translate(X, Y, Z));
  };

  /**
   * The scale method returns a new matrix which is this matrix post multiplied by
   * a scale matrix containing the passed values. If the z component is undefined,
   * a 1 value is used in its place. If the y component is undefined, the x
   * component value is used in its place. This matrix is not modified.
   *
   * @param {number} x The X component of the scale value.
   * @param {number=} y The Y component of the scale value.
   * @param {number=} z The Z component of the scale value.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.scale = function scale (x, y, z) {
    var X = x;
    var Y = y;
    var Z = z;
    if (Y === undefined) { Y = x; }
    if (Z === undefined) { Z = 1; } // Z must be 1 if undefined

    return Multiply(this, Scale(X, Y, Z));
  };

  /**
   * The rotate method returns a new matrix which is this matrix post multiplied
   * by each of 3 rotation matrices about the major axes, first X, then Y, then Z.
   * If the y and z components are undefined, the x value is used to rotate the
   * object about the z axis, as though the vector (0,0,x) were passed. All
   * rotation values are in degrees. This matrix is not modified.
   *
   * @param {number} rx The X component of the rotation, or Z if Y and Z are null.
   * @param {number=} ry The (optional) Y component of the rotation value.
   * @param {number=} rz The (optional) Z component of the rotation value.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.rotate = function rotate (rx, ry, rz) {
    var RX = rx;
    var RY = ry || 0;
    var RZ = rz || 0;

    if (typeof rx === 'number' && ry === undefined && rz === undefined) {
      RZ = RX; RX = 0; RY = 0;
    }

    return Multiply(this, Rotate(RX, RY, RZ));
  };

  /**
   * The rotateAxisAngle method returns a new matrix which is this matrix post
   * multiplied by a rotation matrix with the given axis and `angle`. The right-hand
   * rule is used to determine the direction of rotation. All rotation values are
   * in degrees. This matrix is not modified.
   *
   * @param {number} x The X component of the axis vector.
   * @param {number} y The Y component of the axis vector.
   * @param {number} z The Z component of the axis vector.
   * @param {number} angle The angle of rotation about the axis vector, in degrees.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.rotateAxisAngle = function rotateAxisAngle (x, y, z, angle) {
    if ([x, y, z, angle].some(function (n) { return Number.isNaN(+n); })) {
      throw new TypeError('CSSMatrix: expecting 4 values');
    }
    return Multiply(this, RotateAxisAngle(x, y, z, angle));
  };

  /**
   * Specifies a skew transformation along the `x-axis` by the given angle.
   * This matrix is not modified.
   *
   * @param {number} angle The angle amount in degrees to skew.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.skewX = function skewX (angle) {
    return Multiply(this, SkewX(angle));
  };

  /**
   * Specifies a skew transformation along the `y-axis` by the given angle.
   * This matrix is not modified.
   *
   * @param {number} angle The angle amount in degrees to skew.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.skewY = function skewY (angle) {
    return Multiply(this, SkewY(angle));
  };

  /**
   * Specifies a skew transformation along both the `x-axis` and `y-axis`.
   * This matrix is not modified.
   *
   * @param {number} angleX The X-angle amount in degrees to skew.
   * @param {number} angleY The angle amount in degrees to skew.
   * @return {CSSMatrix} The resulted matrix
   */
  CSSMatrix.prototype.skew = function skew (angleX, angleY) {
    return Multiply(this, Skew(angleX, angleY));
  };

  /**
   * Transforms a specified vector using the matrix, returning a new
   * {x,y,z,w} Tuple *Object* comprising the transformed vector.
   * Neither the matrix nor the original vector are altered.
   *
   * The method is equivalent with `transformPoint()` method
   * of the `DOMMatrix` constructor.
   *
   * @param {CSSM.PointTuple | DOMPoint} t Tuple with `{x,y,z,w}` components
   * @return {CSSM.PointTuple | DOMPoint} the resulting Tuple
   */
  CSSMatrix.prototype.transformPoint = function transformPoint (t) {
    var m = this;

    var x = m.m11 * t.x + m.m21 * t.y + m.m31 * t.z + m.m41 * t.w;
    var y = m.m12 * t.x + m.m22 * t.y + m.m32 * t.z + m.m42 * t.w;
    var z = m.m13 * t.x + m.m23 * t.y + m.m33 * t.z + m.m43 * t.w;
    var w = m.m14 * t.x + m.m24 * t.y + m.m34 * t.z + m.m44 * t.w;

    return t instanceof DOMPoint
      ? new DOMPoint(x, y, z, w)
      : {
        x: x, y: y, z: z, w: w,
      };
  };

  Object.defineProperties( CSSMatrix.prototype, prototypeAccessors );

  // Add Transform Functions to CSSMatrix object
  // without creating a TypeScript namespace.
  Object.assign(CSSMatrix, {
    Translate: Translate,
    Rotate: Rotate,
    RotateAxisAngle: RotateAxisAngle,
    Scale: Scale,
    SkewX: SkewX,
    SkewY: SkewY,
    Skew: Skew,
    Multiply: Multiply,
    fromArray: fromArray,
    fromMatrix: fromMatrix,
    fromString: fromString,
    toArray: toArray,
  });

  var version = "1.0.3";

  /**
   * A global namespace for library version.
   * @type {string}
   */
  var Version = version;

  /** @typedef {import('../types/index')} */

  Object.assign(CSSMatrix, { Version: Version });

  return CSSMatrix;

}));