add environment class

packages/overlayscrollbars-jquery/dist/overlayscrollbars-jquery.esm.js

@@ -1,14 +1,19 @@
 export { default as not } from 'dir/not.png';
 import j from 'jquery';
+
 var abc = 'abc';
+
 const a = 1 + 1;
 var file = {
   a,
 };
+
 const a$1 = 'a';
 const b = 'b';
 const c = 'c';
+
 var index = j('div');
+
 export default index;
 export { a$1 as a, abc, b, c, file };
 //# sourceMappingURL=overlayscrollbars-jquery.esm.js.map

packages/overlayscrollbars-jquery/dist/overlayscrollbars-jquery.esm.js.map

@@ -1 +1 @@
-{"version":3,"file":"overlayscrollbars-jquery.esm.js","sources":["../src/dir/abc.js","../src/file.js","../src/test.js","../src/index.js"],"sourcesContent":["export default 'abc';\r\n","const a = 1 + 1;\r\nexport default {\r\n  a,\r\n};\r\n","export const a = 'a';\r\nexport const b = 'b';\r\nexport const c = 'c';\r\n","import abc from 'dir/abc';\r\nimport not from 'dir/not.png';\r\nimport file from 'file';\r\nimport j from 'jquery';\r\nimport { a, b, c } from 'test';\r\n\r\nexport default j('div');\r\nexport { a, b, c, file, abc, not };\r\n"],"names":["a","b","c","j"],"mappings":";;AAAA,UAAe,KAAf;ACAA,MAAMA,CAAC,GAAG,IAAI,CAAd;AACA,WAAe;AACbA,EAAAA;AADa,CAAf;ACDY,MAACA,GAAC,GAAG,GAAL;AACA,MAACC,CAAC,GAAG,GAAL;AACA,MAACC,CAAC,GAAG,GAAL;ACIZ,YAAeC,CAAC,CAAC,KAAD,CAAhB;;;"}
+{"version":3,"file":"overlayscrollbars-jquery.esm.js","sources":["../src/dir/abc.js","../src/file.js","../src/test.js","../src/index.js"],"sourcesContent":["export default 'abc';\r\n","const a = 1 + 1;\r\nexport default {\r\n  a,\r\n};\r\n","export const a = 'a';\r\nexport const b = 'b';\r\nexport const c = 'c';\r\n","import abc from 'dir/abc';\r\nimport not from 'dir/not.png';\r\nimport file from 'file';\r\nimport j from 'jquery';\r\nimport { a, b, c } from 'test';\r\n\r\nexport default j('div');\r\nexport { a, b, c, file, abc, not };\r\n"],"names":["a","b","c","j"],"mappings":";;;AAAA,UAAe,KAAf;;ACAA,MAAMA,CAAC,GAAG,IAAI,CAAd;AACA,WAAe;AACbA,EAAAA;AADa,CAAf;;MCDaA,GAAC,GAAG;MACJC,CAAC,GAAG;MACJC,CAAC,GAAG;;ACIjB,YAAeC,CAAC,CAAC,KAAD,CAAhB;;;;"}

packages/overlayscrollbars-jquery/dist/overlayscrollbars-jquery.js

@@ -9,15 +9,20 @@
 
   not_png = not_png && Object.prototype.hasOwnProperty.call(not_png, 'default') ? not_png['default'] : not_png;
   j = j && Object.prototype.hasOwnProperty.call(j, 'default') ? j['default'] : j;
+
   var abc = 'abc';
+
   var a = 1 + 1;
   var file = {
     a: a,
   };
+
   var a$1 = 'a';
   var b = 'b';
   var c = 'c';
+
   var index = j('div');
+
   exports.not = not_png;
   exports.a = a$1;
   exports.abc = abc;
@@ -25,8 +30,7 @@
   exports.c = c;
   exports.default = index;
   exports.file = file;
-  Object.defineProperty(exports, '__esModule', {
-    value: true,
-  });
+
+  Object.defineProperty(exports, '__esModule', { value: true });
 });
 //# sourceMappingURL=overlayscrollbars-jquery.js.map

packages/overlayscrollbars-jquery/dist/overlayscrollbars-jquery.js.map

@@ -1 +1 @@
-{"version":3,"file":"overlayscrollbars-jquery.js","sources":["../src/dir/abc.js","../src/file.js","../src/test.js","../src/index.js"],"sourcesContent":["export default 'abc';\r\n","const a = 1 + 1;\r\nexport default {\r\n  a,\r\n};\r\n","export const a = 'a';\r\nexport const b = 'b';\r\nexport const c = 'c';\r\n","import abc from 'dir/abc';\r\nimport not from 'dir/not.png';\r\nimport file from 'file';\r\nimport j from 'jquery';\r\nimport { a, b, c } from 'test';\r\n\r\nexport default j('div');\r\nexport { a, b, c, file, abc, not };\r\n"],"names":["a","b","c","j"],"mappings":";;;;;;;;;;;YAAe;ACAf,MAAMA,CAAC,GAAG,IAAI,CAAd;aACe;AACbA,IAAAA,CAAC,EAADA;AADa;MCDFA,GAAC,GAAG;MACJC,CAAC,GAAG;MACJC,CAAC,GAAG;cCIFC,CAAC,CAAC,KAAD;;;;;;;;;;;;"}
+{"version":3,"file":"overlayscrollbars-jquery.js","sources":["../src/dir/abc.js","../src/file.js","../src/test.js","../src/index.js"],"sourcesContent":["export default 'abc';\r\n","const a = 1 + 1;\r\nexport default {\r\n  a,\r\n};\r\n","export const a = 'a';\r\nexport const b = 'b';\r\nexport const c = 'c';\r\n","import abc from 'dir/abc';\r\nimport not from 'dir/not.png';\r\nimport file from 'file';\r\nimport j from 'jquery';\r\nimport { a, b, c } from 'test';\r\n\r\nexport default j('div');\r\nexport { a, b, c, file, abc, not };\r\n"],"names":["a","b","c","j"],"mappings":";;;;;;;;;;;;AAAA,YAAe,KAAf;;ECAA,IAAMA,CAAC,GAAG,IAAI,CAAd;AACA,aAAe;EACbA,EAAAA,CAAC,EAADA;EADa,CAAf;;MCDaA,GAAC,GAAG;MACJC,CAAC,GAAG;MACJC,CAAC,GAAG;;ACIjB,cAAeC,CAAC,CAAC,KAAD,CAAhB;;;;;;;;;;;;"}

packages/overlayscrollbars/dist/overlayscrollbars.esm.js

@@ -1,20 +1,60 @@
 function isNumber(obj) {
   return typeof obj === 'number';
 }
-
+function isString(obj) {
+  return typeof obj === 'string';
+}
 function isFunction(obj) {
   return typeof obj === 'function';
 }
-
+function isUndefined(obj) {
+  return obj === undefined;
+}
 function isArray(obj) {
   return Array.isArray(obj);
 }
-
 function isArrayLike(obj) {
   const length = !!obj && obj.length;
   return isArray(obj) || (!isFunction(obj) && isNumber(length) && length > -1 && length % 1 == 0);
 }
 
+function getSetProp(topLeft, fallback, elm, value) {
+  if (isUndefined(value)) {
+    return elm ? elm[topLeft] : fallback;
+  }
+
+  elm && (elm[topLeft] = value);
+}
+const removeAttr = (elm, attrName) => {
+  elm == null ? void 0 : elm.removeAttribute(attrName);
+};
+function scrollLeft(elm, value) {
+  return getSetProp('scrollLeft', 0, elm, value);
+}
+
+const rnothtmlwhite = /[^\x20\t\r\n\f]+/g;
+
+const classListAction = (elm, className, action) => {
+  let clazz;
+  let i = 0;
+  let result = false;
+
+  if (elm && isString(className)) {
+    const classes = className.match(rnothtmlwhite) || [];
+    result = classes.length > 0;
+
+    while ((clazz = classes[i++])) {
+      result = action(elm.classList, clazz) && result;
+    }
+  }
+
+  return result;
+};
+const addClass = (elm, className) => {
+  classListAction(elm, className, (classList, clazz) => classList.add(clazz));
+};
+
+const hasOwnProperty = (obj, prop) => Object.prototype.hasOwnProperty.call(obj, prop);
 const keys = (obj) => (obj ? Object.keys(obj) : []);
 
 function each(source, callback) {
@@ -33,6 +73,41 @@ function each(source, callback) {
 
 const contents = (elm) => (elm ? Array.from(elm.childNodes) : []);
 
+const before = (parentElm, preferredAnchor, insertedElms) => {
+  if (insertedElms) {
+    let anchor = preferredAnchor;
+    let fragment;
+
+    if (parentElm) {
+      if (isArrayLike(insertedElms)) {
+        fragment = document.createDocumentFragment();
+        each(insertedElms, (insertedElm) => {
+          if (insertedElm === anchor) {
+            anchor = insertedElm.previousSibling;
+          }
+
+          fragment.appendChild(insertedElm);
+        });
+      } else {
+        fragment = insertedElms;
+      }
+
+      if (preferredAnchor) {
+        if (!anchor) {
+          anchor = parentElm.firstChild;
+        } else if (anchor !== preferredAnchor) {
+          anchor = anchor.nextSibling;
+        }
+      }
+
+      parentElm.insertBefore(fragment, anchor);
+    }
+  }
+};
+
+const appendChildren = (node, children) => {
+  before(node, null, children);
+};
 const removeElements = (nodes) => {
   if (isArrayLike(nodes)) {
     each(Array.from(nodes), (e) => removeElements(e));
@@ -46,22 +121,369 @@ const removeElements = (nodes) => {
 };
 
 const createDiv = () => document.createElement('div');
-
 const createDOM = (html) => {
   const createdDiv = createDiv();
   createdDiv.innerHTML = html.trim();
   return each(contents(createdDiv), (elm) => removeElements(elm));
 };
 
-const abc = {
-  a: 1,
-  b: 1,
-  c: 1,
+const zeroDomRect = new DOMRect();
+const zeroObj = {
+  w: 0,
+  h: 0,
+};
+const windowSize = () => ({
+  w: window.innerWidth,
+  h: window.innerHeight,
+});
+const offsetSize = (elm) =>
+  elm
+    ? {
+        w: elm.offsetWidth,
+        h: elm.offsetHeight,
+      }
+    : zeroObj;
+const clientSize = (elm) =>
+  elm
+    ? {
+        w: elm.clientWidth,
+        h: elm.clientHeight,
+      }
+    : zeroObj;
+
+const cssNumber = {
+  animationiterationcount: 1,
+  columncount: 1,
+  fillopacity: 1,
+  flexgrow: 1,
+  flexshrink: 1,
+  fontweight: 1,
+  lineheight: 1,
+  opacity: 1,
+  order: 1,
+  orphans: 1,
+  widows: 1,
+  zindex: 1,
+  zoom: 1,
 };
 
+const adaptCSSVal = (prop, val) => (!cssNumber[prop.toLowerCase()] && isNumber(val) ? `${val}px` : val);
+
+const getCSSVal = (elm, computedStyle, prop) => (computedStyle != null ? computedStyle.getPropertyValue(prop) : elm.style[prop]);
+
+const setCSSVal = (elm, prop, val) => {
+  try {
+    if (elm && elm.style[prop] !== undefined) {
+      elm.style[prop] = adaptCSSVal(prop, val);
+    }
+  } catch (e) {}
+};
+
+function style(elm, styles) {
+  const getSingleStyle = isString(styles);
+  const getStyles = isArray(styles) || getSingleStyle;
+
+  if (getStyles) {
+    let getStylesResult = getSingleStyle ? '' : {};
+
+    if (elm) {
+      const computedStyle = window.getComputedStyle(elm, null);
+      getStylesResult = getSingleStyle
+        ? getCSSVal(elm, computedStyle, styles)
+        : styles.reduce((result, key) => {
+            result[key] = getCSSVal(elm, computedStyle, key);
+            return result;
+          }, getStylesResult);
+    }
+
+    return getStylesResult;
+  }
+
+  each(keys(styles), (key) => setCSSVal(elm, key, styles[key]));
+}
+
+const zeroObj$1 = {
+  x: 0,
+  y: 0,
+};
+const offset = (elm) => {
+  const rect = elm ? elm.getBoundingClientRect() : 0;
+  return rect
+    ? {
+        x: rect.left + window.pageYOffset,
+        y: rect.top + window.pageXOffset,
+      }
+    : zeroObj$1;
+};
+
+function _classPrivateFieldGet(receiver, privateMap) {
+  var descriptor = privateMap.get(receiver);
+
+  if (!descriptor) {
+    throw new TypeError('attempted to get private field on non-instance');
+  }
+
+  if (descriptor.get) {
+    return descriptor.get.call(receiver);
+  }
+
+  return descriptor.value;
+}
+
+var classPrivateFieldGet = _classPrivateFieldGet;
+
+function _classPrivateFieldSet(receiver, privateMap, value) {
+  var descriptor = privateMap.get(receiver);
+
+  if (!descriptor) {
+    throw new TypeError('attempted to set private field on non-instance');
+  }
+
+  if (descriptor.set) {
+    descriptor.set.call(receiver, value);
+  } else {
+    if (!descriptor.writable) {
+      throw new TypeError('attempted to set read only private field');
+    }
+
+    descriptor.value = value;
+  }
+
+  return value;
+}
+
+var classPrivateFieldSet = _classPrivateFieldSet;
+
+const firstLetterToUpper = (str) => str.charAt(0).toUpperCase() + str.slice(1);
+const jsPrefixes = ['WebKit', 'Moz', 'O', 'MS', 'webkit', 'moz', 'o', 'ms'];
+const jsCache = {};
+const jsAPI = (name) => {
+  let result = jsCache[name] || window[name];
+
+  if (hasOwnProperty(jsCache, name)) {
+    return result;
+  }
+
+  each(jsPrefixes, (prefix) => {
+    result = result || window[prefix + firstLetterToUpper(name)];
+    return !result;
+  });
+  jsCache[name] = result;
+  return result;
+};
+
+const resizeObserver = jsAPI('ResizeObserver');
+
+function createCommonjsModule(fn, basedir, module) {
+  return (
+    (module = {
+      path: basedir,
+      exports: {},
+      require: function (path, base) {
+        return commonjsRequire(path, base === undefined || base === null ? module.path : base);
+      },
+    }),
+    fn(module, module.exports),
+    module.exports
+  );
+}
+
+function commonjsRequire() {
+  throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
+}
+
+var _extends_1 = createCommonjsModule(function (module) {
+  function _extends() {
+    module.exports = _extends =
+      Object.assign ||
+      function (target) {
+        for (var i = 1; i < arguments.length; i++) {
+          var source = arguments[i];
+
+          for (var key in source) {
+            if (Object.prototype.hasOwnProperty.call(source, key)) {
+              target[key] = source[key];
+            }
+          }
+        }
+
+        return target;
+      };
+
+    return _extends.apply(this, arguments);
+  }
+
+  module.exports = _extends;
+});
+
+const templateTypePrefixSuffix = ['__TPL_', '_TYPE__'];
+const optionsTemplateTypes = ['boolean', 'number', 'string', 'array', 'object', 'function', 'null'].reduce((result, item) => {
+  result[item] = templateTypePrefixSuffix[0] + item + templateTypePrefixSuffix[1];
+  return result;
+}, {});
+
+const { abs, round } = Math;
+
+const nativeScrollbarSize = (body, measureElm) => {
+  appendChildren(body, measureElm);
+  const cSize = clientSize(measureElm);
+  const oSize = offsetSize(measureElm);
+  return {
+    x: oSize.h - cSize.h,
+    y: oSize.w - cSize.w,
+  };
+};
+
+const nativeScrollbarStyling = (testElm) => {
+  let result = false;
+  addClass(testElm, 'os-viewport-native-scrollbars-invisible');
+
+  try {
+    result =
+      style(testElm, 'scrollbar-width') === 'none' || window.getComputedStyle(testElm, '::-webkit-scrollbar').getPropertyValue('display') === 'none';
+  } catch (ex) {}
+
+  return result;
+};
+
+const rtlScrollBehavior = (parentElm, childElm) => {
+  const strHidden = 'hidden';
+  style(parentElm, {
+    overflowX: strHidden,
+    overflowY: strHidden,
+  });
+  scrollLeft(parentElm, 0);
+  const parentOffset = offset(parentElm);
+  const childOffset = offset(childElm);
+  scrollLeft(parentElm, -999);
+  const childOffsetAfterScroll = offset(childElm);
+  return {
+    i: parentOffset.x === childOffset.x,
+    n: childOffset.x !== childOffsetAfterScroll.x,
+  };
+};
+
+const passiveEvents = () => {
+  let supportsPassive = false;
+
+  try {
+    window.addEventListener(
+      'test',
+      null,
+      Object.defineProperty({}, 'passive', {
+        get: function () {
+          supportsPassive = true;
+        },
+      })
+    );
+  } catch (e) {}
+
+  return supportsPassive;
+};
+
+const windowDPR = () => {
+  const dDPI = window.screen.deviceXDPI || 0;
+  const sDPI = window.screen.logicalXDPI || 1;
+  return window.devicePixelRatio || dDPI / sDPI;
+};
+
+const diffBiggerThanOne = (valOne, valTwo) => {
+  const absValOne = abs(valOne);
+  const absValTwo = abs(valTwo);
+  return !(absValOne === absValTwo || absValOne + 1 === absValTwo || absValOne - 1 === absValTwo);
+};
+
+var _onChangedListener = new WeakMap();
+
+class Environment {
+  constructor() {
+    _onChangedListener.set(this, {
+      writable: true,
+      value: void 0,
+    });
+
+    classPrivateFieldSet(this, _onChangedListener, new Set());
+
+    const _self = this;
+
+    const { body } = document;
+    const envDOM = createDOM('<div id="os-dummy-scrollbar-size"><div></div></div>');
+    const envElm = envDOM[0];
+    const envChildElm = envElm.firstChild;
+    const nScrollBarSize = nativeScrollbarSize(body, envElm);
+    const nativeScrollbarIsOverlaid = {
+      x: nScrollBarSize.x === 0,
+      y: nScrollBarSize.y === 0,
+    };
+    _self.autoUpdateLoop = false;
+    _self.nativeScrollbarSize = nScrollBarSize;
+    _self.nativeScrollbarIsOverlaid = nativeScrollbarIsOverlaid;
+    _self.nativeScrollbarStyling = nativeScrollbarStyling(envElm);
+    _self.rtlScrollBehavior = rtlScrollBehavior(envElm, envChildElm);
+    _self.supportPassiveEvents = passiveEvents();
+    _self.supportResizeObserver = !!jsAPI('ResizeObserver');
+    removeAttr(envElm, 'style');
+    removeElements(envElm);
+
+    if (nativeScrollbarIsOverlaid.x && nativeScrollbarIsOverlaid.y) {
+      let size = windowSize();
+      let dpr = windowDPR();
+
+      const onChangedListener = classPrivateFieldGet(this, _onChangedListener);
+
+      window.addEventListener('resize', () => {
+        if (onChangedListener.size) {
+          const sizeNew = windowSize();
+          const deltaSize = {
+            w: sizeNew.w - size.w,
+            h: sizeNew.h - size.h,
+          };
+          if (deltaSize.w === 0 && deltaSize.h === 0) return;
+          const deltaAbsSize = {
+            w: abs(deltaSize.w),
+            h: abs(deltaSize.h),
+          };
+          const deltaAbsRatio = {
+            w: abs(round(sizeNew.w / (size.w / 100.0))),
+            h: abs(round(sizeNew.h / (size.h / 100.0))),
+          };
+          const dprNew = windowDPR();
+          const deltaIsBigger = deltaAbsSize.w > 2 && deltaAbsSize.h > 2;
+          const difference = !diffBiggerThanOne(deltaAbsRatio.w, deltaAbsRatio.h);
+          const dprChanged = dprNew !== dpr && dpr > 0;
+          const isZoom = deltaIsBigger && difference && dprChanged;
+          const oldScrollbarSize = _self.nativeScrollbarSize;
+          let newScrollbarSize;
+
+          if (isZoom) {
+            newScrollbarSize = _self.nativeScrollbarSize = nativeScrollbarSize(body, envElm);
+            removeElements(envElm);
+
+            if (oldScrollbarSize.x !== newScrollbarSize.x || oldScrollbarSize.y !== newScrollbarSize.y) {
+              onChangedListener.forEach((listener) => listener && listener(_self));
+            }
+          }
+
+          size = sizeNew;
+          dpr = dprNew;
+        }
+      });
+    }
+  }
+
+  addListener(listener) {
+    classPrivateFieldGet(this, _onChangedListener).add(listener);
+  }
+
+  removeListener(listener) {
+    classPrivateFieldGet(this, _onChangedListener).delete(listener);
+  }
+}
+
+const env = new Environment();
 var index = () => {
-  const { a, b, c } = abc;
   return [
+    env,
     createDOM(
       '\
     <div class="os-host">\
@@ -86,9 +508,6 @@ var index = () => {
         <div class="os-scrollbar-corner"></div>\
     </div>'
     ),
-    a,
-    b,
-    c,
   ];
 };
 

packages/overlayscrollbars/dist/overlayscrollbars.js

@@ -10,20 +10,64 @@
   function isNumber(obj) {
     return typeof obj === 'number';
   }
-
+  function isString(obj) {
+    return typeof obj === 'string';
+  }
   function isFunction(obj) {
     return typeof obj === 'function';
   }
-
+  function isUndefined(obj) {
+    return obj === undefined;
+  }
   function isArray(obj) {
     return Array.isArray(obj);
   }
-
   function isArrayLike(obj) {
     var length = !!obj && obj.length;
     return isArray(obj) || (!isFunction(obj) && isNumber(length) && length > -1 && length % 1 == 0);
   }
 
+  function getSetProp(topLeft, fallback, elm, value) {
+    if (isUndefined(value)) {
+      return elm ? elm[topLeft] : fallback;
+    }
+
+    elm && (elm[topLeft] = value);
+  }
+  var removeAttr = function removeAttr(elm, attrName) {
+    elm == null ? void 0 : elm.removeAttribute(attrName);
+  };
+  function scrollLeft(elm, value) {
+    return getSetProp('scrollLeft', 0, elm, value);
+  }
+
+  var rnothtmlwhite = /[^\x20\t\r\n\f]+/g;
+
+  var classListAction = function classListAction(elm, className, action) {
+    var clazz;
+    var i = 0;
+    var result = false;
+
+    if (elm && isString(className)) {
+      var classes = className.match(rnothtmlwhite) || [];
+      result = classes.length > 0;
+
+      while ((clazz = classes[i++])) {
+        result = action(elm.classList, clazz) && result;
+      }
+    }
+
+    return result;
+  };
+  var addClass = function addClass(elm, className) {
+    classListAction(elm, className, function (classList, clazz) {
+      return classList.add(clazz);
+    });
+  };
+
+  var hasOwnProperty = function hasOwnProperty(obj, prop) {
+    return Object.prototype.hasOwnProperty.call(obj, prop);
+  };
   var keys = function keys(obj) {
     return obj ? Object.keys(obj) : [];
   };
@@ -48,6 +92,41 @@
     return elm ? Array.from(elm.childNodes) : [];
   };
 
+  var before = function before(parentElm, preferredAnchor, insertedElms) {
+    if (insertedElms) {
+      var anchor = preferredAnchor;
+      var fragment;
+
+      if (parentElm) {
+        if (isArrayLike(insertedElms)) {
+          fragment = document.createDocumentFragment();
+          each(insertedElms, function (insertedElm) {
+            if (insertedElm === anchor) {
+              anchor = insertedElm.previousSibling;
+            }
+
+            fragment.appendChild(insertedElm);
+          });
+        } else {
+          fragment = insertedElms;
+        }
+
+        if (preferredAnchor) {
+          if (!anchor) {
+            anchor = parentElm.firstChild;
+          } else if (anchor !== preferredAnchor) {
+            anchor = anchor.nextSibling;
+          }
+        }
+
+        parentElm.insertBefore(fragment, anchor);
+      }
+    }
+  };
+
+  var appendChildren = function appendChildren(node, children) {
+    before(node, null, children);
+  };
   var removeElements = function removeElements(nodes) {
     if (isArrayLike(nodes)) {
       each(Array.from(nodes), function (e) {
@@ -65,7 +144,6 @@
   var createDiv = function createDiv() {
     return document.createElement('div');
   };
-
   var createDOM = function createDOM(html) {
     var createdDiv = createDiv();
     createdDiv.innerHTML = html.trim();
@@ -74,17 +152,384 @@
     });
   };
 
-  var abc = {
-    a: 1,
-    b: 1,
-    c: 1,
+  var zeroDomRect = new DOMRect();
+  var zeroObj = {
+    w: 0,
+    h: 0,
+  };
+  var windowSize = function windowSize() {
+    return {
+      w: window.innerWidth,
+      h: window.innerHeight,
+    };
+  };
+  var offsetSize = function offsetSize(elm) {
+    return elm
+      ? {
+          w: elm.offsetWidth,
+          h: elm.offsetHeight,
+        }
+      : zeroObj;
+  };
+  var clientSize = function clientSize(elm) {
+    return elm
+      ? {
+          w: elm.clientWidth,
+          h: elm.clientHeight,
+        }
+      : zeroObj;
   };
 
-  var index = function index() {
-    var a = abc.a,
-      b = abc.b,
-      c = abc.c;
+  var cssNumber = {
+    animationiterationcount: 1,
+    columncount: 1,
+    fillopacity: 1,
+    flexgrow: 1,
+    flexshrink: 1,
+    fontweight: 1,
+    lineheight: 1,
+    opacity: 1,
+    order: 1,
+    orphans: 1,
+    widows: 1,
+    zindex: 1,
+    zoom: 1,
+  };
+
+  var adaptCSSVal = function adaptCSSVal(prop, val) {
+    return !cssNumber[prop.toLowerCase()] && isNumber(val) ? val + 'px' : val;
+  };
+
+  var getCSSVal = function getCSSVal(elm, computedStyle, prop) {
+    return computedStyle != null ? computedStyle.getPropertyValue(prop) : elm.style[prop];
+  };
+
+  var setCSSVal = function setCSSVal(elm, prop, val) {
+    try {
+      if (elm && elm.style[prop] !== undefined) {
+        elm.style[prop] = adaptCSSVal(prop, val);
+      }
+    } catch (e) {}
+  };
+
+  function style(elm, styles) {
+    var getSingleStyle = isString(styles);
+    var getStyles = isArray(styles) || getSingleStyle;
+
+    if (getStyles) {
+      var getStylesResult = getSingleStyle ? '' : {};
+
+      if (elm) {
+        var computedStyle = window.getComputedStyle(elm, null);
+        getStylesResult = getSingleStyle
+          ? getCSSVal(elm, computedStyle, styles)
+          : styles.reduce(function (result, key) {
+              result[key] = getCSSVal(elm, computedStyle, key);
+              return result;
+            }, getStylesResult);
+      }
+
+      return getStylesResult;
+    }
+
+    each(keys(styles), function (key) {
+      return setCSSVal(elm, key, styles[key]);
+    });
+  }
+
+  var zeroObj$1 = {
+    x: 0,
+    y: 0,
+  };
+  var offset = function offset(elm) {
+    var rect = elm ? elm.getBoundingClientRect() : 0;
+    return rect
+      ? {
+          x: rect.left + window.pageYOffset,
+          y: rect.top + window.pageXOffset,
+        }
+      : zeroObj$1;
+  };
+
+  function _classPrivateFieldGet(receiver, privateMap) {
+    var descriptor = privateMap.get(receiver);
+
+    if (!descriptor) {
+      throw new TypeError('attempted to get private field on non-instance');
+    }
+
+    if (descriptor.get) {
+      return descriptor.get.call(receiver);
+    }
+
+    return descriptor.value;
+  }
+
+  var classPrivateFieldGet = _classPrivateFieldGet;
+
+  function _classPrivateFieldSet(receiver, privateMap, value) {
+    var descriptor = privateMap.get(receiver);
+
+    if (!descriptor) {
+      throw new TypeError('attempted to set private field on non-instance');
+    }
+
+    if (descriptor.set) {
+      descriptor.set.call(receiver, value);
+    } else {
+      if (!descriptor.writable) {
+        throw new TypeError('attempted to set read only private field');
+      }
+
+      descriptor.value = value;
+    }
+
+    return value;
+  }
+
+  var classPrivateFieldSet = _classPrivateFieldSet;
+
+  var firstLetterToUpper = function firstLetterToUpper(str) {
+    return str.charAt(0).toUpperCase() + str.slice(1);
+  };
+  var jsPrefixes = ['WebKit', 'Moz', 'O', 'MS', 'webkit', 'moz', 'o', 'ms'];
+  var jsCache = {};
+  var jsAPI = function jsAPI(name) {
+    var result = jsCache[name] || window[name];
+
+    if (hasOwnProperty(jsCache, name)) {
+      return result;
+    }
+
+    each(jsPrefixes, function (prefix) {
+      result = result || window[prefix + firstLetterToUpper(name)];
+      return !result;
+    });
+    jsCache[name] = result;
+    return result;
+  };
+
+  var resizeObserver = jsAPI('ResizeObserver');
+
+  function createCommonjsModule(fn, basedir, module) {
+    return (
+      (module = {
+        path: basedir,
+        exports: {},
+        require: function (path, base) {
+          return commonjsRequire(path, base === undefined || base === null ? module.path : base);
+        },
+      }),
+      fn(module, module.exports),
+      module.exports
+    );
+  }
+
+  function commonjsRequire() {
+    throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
+  }
+
+  var _extends_1 = createCommonjsModule(function (module) {
+    function _extends() {
+      module.exports = _extends =
+        Object.assign ||
+        function (target) {
+          for (var i = 1; i < arguments.length; i++) {
+            var source = arguments[i];
+
+            for (var key in source) {
+              if (Object.prototype.hasOwnProperty.call(source, key)) {
+                target[key] = source[key];
+              }
+            }
+          }
+
+          return target;
+        };
+
+      return _extends.apply(this, arguments);
+    }
+
+    module.exports = _extends;
+  });
+
+  var templateTypePrefixSuffix = ['__TPL_', '_TYPE__'];
+  var optionsTemplateTypes = ['boolean', 'number', 'string', 'array', 'object', 'function', 'null'].reduce(function (result, item) {
+    result[item] = templateTypePrefixSuffix[0] + item + templateTypePrefixSuffix[1];
+    return result;
+  }, {});
+
+  var abs = Math.abs,
+    round = Math.round;
+
+  var nativeScrollbarSize = function nativeScrollbarSize(body, measureElm) {
+    appendChildren(body, measureElm);
+    var cSize = clientSize(measureElm);
+    var oSize = offsetSize(measureElm);
+    return {
+      x: oSize.h - cSize.h,
+      y: oSize.w - cSize.w,
+    };
+  };
+
+  var nativeScrollbarStyling = function nativeScrollbarStyling(testElm) {
+    var result = false;
+    addClass(testElm, 'os-viewport-native-scrollbars-invisible');
+
+    try {
+      result =
+        style(testElm, 'scrollbar-width') === 'none' ||
+        window.getComputedStyle(testElm, '::-webkit-scrollbar').getPropertyValue('display') === 'none';
+    } catch (ex) {}
+
+    return result;
+  };
+
+  var rtlScrollBehavior = function rtlScrollBehavior(parentElm, childElm) {
+    var strHidden = 'hidden';
+    style(parentElm, {
+      overflowX: strHidden,
+      overflowY: strHidden,
+    });
+    scrollLeft(parentElm, 0);
+    var parentOffset = offset(parentElm);
+    var childOffset = offset(childElm);
+    scrollLeft(parentElm, -999);
+    var childOffsetAfterScroll = offset(childElm);
+    return {
+      i: parentOffset.x === childOffset.x,
+      n: childOffset.x !== childOffsetAfterScroll.x,
+    };
+  };
+
+  var passiveEvents = function passiveEvents() {
+    var supportsPassive = false;
+
+    try {
+      window.addEventListener(
+        'test',
+        null,
+        Object.defineProperty({}, 'passive', {
+          get: function get() {
+            supportsPassive = true;
+          },
+        })
+      );
+    } catch (e) {}
+
+    return supportsPassive;
+  };
+
+  var windowDPR = function windowDPR() {
+    var dDPI = window.screen.deviceXDPI || 0;
+    var sDPI = window.screen.logicalXDPI || 1;
+    return window.devicePixelRatio || dDPI / sDPI;
+  };
+
+  var diffBiggerThanOne = function diffBiggerThanOne(valOne, valTwo) {
+    var absValOne = abs(valOne);
+    var absValTwo = abs(valTwo);
+    return !(absValOne === absValTwo || absValOne + 1 === absValTwo || absValOne - 1 === absValTwo);
+  };
+
+  var _onChangedListener = new WeakMap();
+
+  var Environment = /*#__PURE__*/ (function () {
+    function Environment() {
+      _onChangedListener.set(this, {
+        writable: true,
+        value: void 0,
+      });
+
+      classPrivateFieldSet(this, _onChangedListener, new Set());
+
+      var _self = this;
+
+      var _document = document,
+        body = _document.body;
+      var envDOM = createDOM('<div id="os-dummy-scrollbar-size"><div></div></div>');
+      var envElm = envDOM[0];
+      var envChildElm = envElm.firstChild;
+      var nScrollBarSize = nativeScrollbarSize(body, envElm);
+      var nativeScrollbarIsOverlaid = {
+        x: nScrollBarSize.x === 0,
+        y: nScrollBarSize.y === 0,
+      };
+      _self.autoUpdateLoop = false;
+      _self.nativeScrollbarSize = nScrollBarSize;
+      _self.nativeScrollbarIsOverlaid = nativeScrollbarIsOverlaid;
+      _self.nativeScrollbarStyling = nativeScrollbarStyling(envElm);
+      _self.rtlScrollBehavior = rtlScrollBehavior(envElm, envChildElm);
+      _self.supportPassiveEvents = passiveEvents();
+      _self.supportResizeObserver = !!jsAPI('ResizeObserver');
+      removeAttr(envElm, 'style');
+      removeElements(envElm);
+
+      if (nativeScrollbarIsOverlaid.x && nativeScrollbarIsOverlaid.y) {
+        var size = windowSize();
+        var dpr = windowDPR();
+
+        var onChangedListener = classPrivateFieldGet(this, _onChangedListener);
+
+        window.addEventListener('resize', function () {
+          if (onChangedListener.size) {
+            var sizeNew = windowSize();
+            var deltaSize = {
+              w: sizeNew.w - size.w,
+              h: sizeNew.h - size.h,
+            };
+            if (deltaSize.w === 0 && deltaSize.h === 0) return;
+            var deltaAbsSize = {
+              w: abs(deltaSize.w),
+              h: abs(deltaSize.h),
+            };
+            var deltaAbsRatio = {
+              w: abs(round(sizeNew.w / (size.w / 100.0))),
+              h: abs(round(sizeNew.h / (size.h / 100.0))),
+            };
+            var dprNew = windowDPR();
+            var deltaIsBigger = deltaAbsSize.w > 2 && deltaAbsSize.h > 2;
+            var difference = !diffBiggerThanOne(deltaAbsRatio.w, deltaAbsRatio.h);
+            var dprChanged = dprNew !== dpr && dpr > 0;
+            var isZoom = deltaIsBigger && difference && dprChanged;
+            var oldScrollbarSize = _self.nativeScrollbarSize;
+            var newScrollbarSize;
+
+            if (isZoom) {
+              newScrollbarSize = _self.nativeScrollbarSize = nativeScrollbarSize(body, envElm);
+              removeElements(envElm);
+
+              if (oldScrollbarSize.x !== newScrollbarSize.x || oldScrollbarSize.y !== newScrollbarSize.y) {
+                onChangedListener.forEach(function (listener) {
+                  return listener && listener(_self);
+                });
+              }
+            }
+
+            size = sizeNew;
+            dpr = dprNew;
+          }
+        });
+      }
+    }
+
+    var _proto = Environment.prototype;
+
+    _proto.addListener = function addListener(listener) {
+      classPrivateFieldGet(this, _onChangedListener).add(listener);
+    };
+
+    _proto.removeListener = function removeListener(listener) {
+      classPrivateFieldGet(this, _onChangedListener).delete(listener);
+    };
+
+    return Environment;
+  })();
+
+  var env = new Environment();
+  var index = function () {
     return [
+      env,
       createDOM(
         '\
     <div class="os-host">\
@@ -109,9 +554,6 @@
         <div class="os-scrollbar-corner"></div>\
     </div>'
       ),
-      a,
-      b,
-      c,
     ];
   };
 

packages/overlayscrollbars/src/environment/environment.ts

@@ -0,0 +1,201 @@
+import {
+  createDOM,
+  addClass,
+  style,
+  appendChildren,
+  clientSize,
+  offset,
+  offsetSize,
+  scrollLeft,
+  jsAPI,
+  XY,
+  removeAttr,
+  removeElements,
+  windowSize,
+} from 'support';
+
+type OnEnvironmentChanged = (env: Environment) => void;
+
+const { abs, round } = Math;
+
+const nativeScrollbarSize = (body: HTMLElement, measureElm: HTMLElement): XY => {
+  appendChildren(body, measureElm);
+  const cSize = clientSize(measureElm);
+  const oSize = offsetSize(measureElm);
+
+  return {
+    x: oSize.h - cSize.h,
+    y: oSize.w - cSize.w,
+  };
+};
+
+const nativeScrollbarStyling = (testElm: HTMLElement): boolean => {
+  let result = false;
+  addClass(testElm, 'os-viewport-native-scrollbars-invisible');
+  try {
+    result =
+      style(testElm, 'scrollbar-width') === 'none' || window.getComputedStyle(testElm, '::-webkit-scrollbar').getPropertyValue('display') === 'none';
+  } catch (ex) {}
+
+  return result;
+};
+
+const rtlScrollBehavior = (parentElm: HTMLElement, childElm: HTMLElement): { i: boolean; n: boolean } => {
+  const strHidden = 'hidden';
+  style(parentElm, { overflowX: strHidden, overflowY: strHidden });
+  scrollLeft(parentElm, 0);
+
+  const parentOffset = offset(parentElm);
+  const childOffset = offset(childElm);
+  scrollLeft(parentElm, -999); // https://github.com/KingSora/OverlayScrollbars/issues/187
+  const childOffsetAfterScroll = offset(childElm);
+  return {
+    /**
+     * origin direction = determines if the zero scroll position is on the left or right side
+     * 'i' means 'invert' (i === true means that the axis must be inverted to be correct)
+     * true = on the left side
+     * false = on the right side
+     */
+    i: parentOffset.x === childOffset.x,
+    /**
+     * negative = determines if the maximum scroll is positive or negative
+     * 'n' means 'negate' (n === true means that the axis must be negated to be correct)
+     * true = negative
+     * false = positive
+     */
+    n: childOffset.x !== childOffsetAfterScroll.x,
+  };
+};
+
+const passiveEvents = (): boolean => {
+  let supportsPassive = false;
+  try {
+    /* eslint-disable */
+    // @ts-ignore
+    window.addEventListener(
+      'test',
+      null,
+      Object.defineProperty({}, 'passive', {
+        get: function () {
+          supportsPassive = true;
+        },
+      })
+    );
+    /* eslint-enable */
+  } catch (e) {}
+  return supportsPassive;
+};
+
+const windowDPR = (): number => {
+  // eslint-disable-next-line
+  // @ts-ignore
+  const dDPI = window.screen.deviceXDPI || 0;
+  // eslint-disable-next-line
+  // @ts-ignore
+  const sDPI = window.screen.logicalXDPI || 1;
+  return window.devicePixelRatio || dDPI / sDPI;
+};
+
+const diffBiggerThanOne = (valOne: number, valTwo: number): boolean => {
+  const absValOne = abs(valOne);
+  const absValTwo = abs(valTwo);
+  return !(absValOne === absValTwo || absValOne + 1 === absValTwo || absValOne - 1 === absValTwo);
+};
+
+export class Environment {
+  #onChangedListener: Set<OnEnvironmentChanged> = new Set();
+
+  autoUpdateLoop!: boolean;
+
+  nativeScrollbarSize!: XY;
+
+  nativeScrollbarIsOverlaid!: XY<boolean>;
+
+  nativeScrollbarStyling!: boolean;
+
+  rtlScrollBehavior!: { n: boolean; i: boolean };
+
+  supportPassiveEvents!: boolean;
+
+  supportResizeObserver!: boolean;
+
+  constructor() {
+    const _self = this;
+    const { body } = document;
+    const envDOM = createDOM('<div id="os-dummy-scrollbar-size"><div></div></div>');
+    const envElm = envDOM[0] as HTMLElement;
+    const envChildElm = envElm.firstChild as HTMLElement;
+
+    const nScrollBarSize = nativeScrollbarSize(body, envElm);
+    const nativeScrollbarIsOverlaid = {
+      x: nScrollBarSize.x === 0,
+      y: nScrollBarSize.y === 0,
+    };
+
+    _self.autoUpdateLoop = false;
+    _self.nativeScrollbarSize = nScrollBarSize;
+    _self.nativeScrollbarIsOverlaid = nativeScrollbarIsOverlaid;
+    _self.nativeScrollbarStyling = nativeScrollbarStyling(envElm);
+    _self.rtlScrollBehavior = rtlScrollBehavior(envElm, envChildElm);
+    _self.supportPassiveEvents = passiveEvents();
+    _self.supportResizeObserver = !!jsAPI('ResizeObserver');
+
+    removeAttr(envElm, 'style');
+    removeElements(envElm);
+
+    if (nativeScrollbarIsOverlaid.x && nativeScrollbarIsOverlaid.y) {
+      let size = windowSize();
+      let dpr = windowDPR();
+      const onChangedListener = this.#onChangedListener;
+
+      window.addEventListener('resize', () => {
+        if (onChangedListener.size) {
+          const sizeNew = windowSize();
+          const deltaSize = {
+            w: sizeNew.w - size.w,
+            h: sizeNew.h - size.h,
+          };
+
+          if (deltaSize.w === 0 && deltaSize.h === 0) return;
+
+          const deltaAbsSize = {
+            w: abs(deltaSize.w),
+            h: abs(deltaSize.h),
+          };
+          const deltaAbsRatio = {
+            w: abs(round(sizeNew.w / (size.w / 100.0))),
+            h: abs(round(sizeNew.h / (size.h / 100.0))),
+          };
+          const dprNew = windowDPR();
+          const deltaIsBigger = deltaAbsSize.w > 2 && deltaAbsSize.h > 2;
+          const difference = !diffBiggerThanOne(deltaAbsRatio.w, deltaAbsRatio.h);
+          const dprChanged = dprNew !== dpr && dpr > 0;
+          const isZoom = deltaIsBigger && difference && dprChanged;
+
+          const oldScrollbarSize = _self.nativeScrollbarSize;
+          let newScrollbarSize;
+
+          if (isZoom) {
+            newScrollbarSize = _self.nativeScrollbarSize = nativeScrollbarSize(body, envElm);
+            removeElements(envElm);
+
+            if (oldScrollbarSize.x !== newScrollbarSize.x || oldScrollbarSize.y !== newScrollbarSize.y) {
+              onChangedListener.forEach((listener) => listener && listener(_self));
+            }
+          }
+
+          size = sizeNew;
+          dpr = dprNew;
+        }
+      });
+    }
+  }
+
+  addListener(listener: OnEnvironmentChanged): void {
+    this.#onChangedListener.add(listener);
+  }
+
+  removeListener(listener: OnEnvironmentChanged): void {
+    this.#onChangedListener.delete(listener);
+  }
+}

packages/overlayscrollbars/src/environment/index.ts

@@ -0,0 +1 @@
+export * from 'environment/environment';

packages/overlayscrollbars/src/index.ts

@@ -1,14 +1,15 @@
 import { createDOM } from 'support/dom';
+import { Environment } from 'environment';
 
 const abc = {
   a: 1,
   b: 1,
   c: 1,
 };
-
+const env = new Environment();
 export default () => {
-  const { a, b, c } = abc;
   return [
+    env,
     createDOM(
       '\
     <div class="os-host">\
@@ -33,8 +34,5 @@ export default () => {
         <div class="os-scrollbar-corner"></div>\
     </div>'
     ),
-    a,
-    b,
-    c,
   ];
 };

packages/overlayscrollbars/src/support/dom/dimensions.ts

@@ -0,0 +1,30 @@
+import { WH } from 'support/dom';
+
+const zeroDomRect = new DOMRect();
+const zeroObj: WH = {
+  w: 0,
+  h: 0,
+};
+
+export const windowSize = (): WH => ({
+  w: window.innerWidth,
+  h: window.innerHeight,
+});
+
+export const offsetSize = (elm: HTMLElement | null): WH =>
+  elm
+    ? {
+        w: elm.offsetWidth,
+        h: elm.offsetHeight,
+      }
+    : zeroObj;
+
+export const clientSize = (elm: HTMLElement | null): WH =>
+  elm
+    ? {
+        w: elm.clientWidth,
+        h: elm.clientHeight,
+      }
+    : zeroObj;
+
+export const getBoundingClientRect = (elm: HTMLElement | null): DOMRect => (elm ? elm.getBoundingClientRect() : zeroDomRect);

packages/overlayscrollbars/src/support/dom/index.ts

@@ -1,7 +1,18 @@
 export * from 'support/dom/attribute';
 export * from 'support/dom/class';
 export * from 'support/dom/create';
+export * from 'support/dom/dimensions';
 export * from 'support/dom/style';
 export * from 'support/dom/manipulation';
 export * from 'support/dom/offset';
 export * from 'support/dom/traversal';
+
+export interface XY<T = number> {
+  x: T;
+  y: T;
+}
+
+export interface WH<T = number> {
+  w: T;
+  h: T;
+}

packages/overlayscrollbars/src/support/dom/offset.ts

@@ -1,22 +1,24 @@
-const zeroObj = {
-  left: 0,
-  top: 0,
+import { XY } from 'support/dom';
+
+const zeroObj: XY = {
+  x: 0,
+  y: 0,
 };
 
-export const offset = (elm: HTMLElement | null) => {
+export const offset = (elm: HTMLElement | null): XY => {
   const rect = elm ? elm.getBoundingClientRect() : 0;
   return rect
     ? {
-        left: rect.left + window.pageYOffset,
-        top: rect.top + window.pageXOffset,
+        x: rect.left + window.pageYOffset,
+        y: rect.top + window.pageXOffset,
       }
     : zeroObj;
 };
 
-export const position = (elm: HTMLElement | null) =>
+export const position = (elm: HTMLElement | null): XY =>
   elm
     ? {
-        left: elm.offsetLeft,
-        top: elm.offsetTop,
+        x: elm.offsetLeft,
+        y: elm.offsetTop,
       }
     : zeroObj;

packages/overlayscrollbars/tests/support/dom/offset.test.ts

@@ -6,15 +6,15 @@ describe('dom offset', () => {
     test('returns correct object with DOM element', () => {
       const result = offset(document.body);
       expect(isPlainObject(result)).toBe(true);
-      expect(isNumber(result.left)).toBe(true);
-      expect(isNumber(result.top)).toBe(true);
+      expect(isNumber(result.x)).toBe(true);
+      expect(isNumber(result.y)).toBe(true);
     });
 
     test('returns correct object with null', () => {
       const result = offset(null);
       expect(isPlainObject(result)).toBe(true);
-      expect(result.left).toBe(0);
-      expect(result.top).toBe(0);
+      expect(result.x).toBe(0);
+      expect(result.y).toBe(0);
     });
   });
 
@@ -22,15 +22,15 @@ describe('dom offset', () => {
     test('returns correct object with DOM element', () => {
       const result = position(document.body);
       expect(isPlainObject(result)).toBe(true);
-      expect(isNumber(result.left)).toBe(true);
-      expect(isNumber(result.top)).toBe(true);
+      expect(isNumber(result.x)).toBe(true);
+      expect(isNumber(result.y)).toBe(true);
     });
 
     test('returns correct object with null', () => {
       const result = position(null);
       expect(isPlainObject(result)).toBe(true);
-      expect(result.left).toBe(0);
-      expect(result.top).toBe(0);
+      expect(result.x).toBe(0);
+      expect(result.y).toBe(0);
     });
   });
 });

packages/overlayscrollbars/types/environment/environment.d.ts

@@ -0,0 +1,19 @@
+import { XY } from 'support';
+declare type OnEnvironmentChanged = (env: Environment) => void;
+export declare class Environment {
+    #private;
+    autoUpdateLoop: boolean;
+    nativeScrollbarSize: XY;
+    nativeScrollbarIsOverlaid: XY<boolean>;
+    nativeScrollbarStyling: boolean;
+    rtlScrollBehavior: {
+        n: boolean;
+        i: boolean;
+    };
+    supportPassiveEvents: boolean;
+    supportResizeObserver: boolean;
+    constructor();
+    addListener(listener: OnEnvironmentChanged): void;
+    removeListener(listener: OnEnvironmentChanged): void;
+}
+export {};

packages/overlayscrollbars/types/environment/index.d.ts

@@ -0,0 +1 @@
+export * from 'environment/environment';

packages/overlayscrollbars/types/index.d.ts

@@ -1,2 +1,3 @@
-declare const _default: () => (number | readonly Node[])[];
+import { Environment } from 'environment';
+declare const _default: () => (Environment | readonly Node[])[];
 export default _default;

packages/overlayscrollbars/types/support/dom/dimensions.d.ts

@@ -0,0 +1,5 @@
+import { WH } from 'support/dom';
+export declare const windowSize: () => WH;
+export declare const offsetSize: (elm: HTMLElement | null) => WH;
+export declare const clientSize: (elm: HTMLElement | null) => WH;
+export declare const getBoundingClientRect: (elm: HTMLElement | null) => DOMRect;

packages/overlayscrollbars/types/support/dom/index.d.ts

@@ -1,7 +1,16 @@
 export * from 'support/dom/attribute';
 export * from 'support/dom/class';
 export * from 'support/dom/create';
+export * from 'support/dom/dimensions';
 export * from 'support/dom/style';
 export * from 'support/dom/manipulation';
 export * from 'support/dom/offset';
 export * from 'support/dom/traversal';
+export interface XY<T = number> {
+    x: T;
+    y: T;
+}
+export interface WH<T = number> {
+    w: T;
+    h: T;
+}

packages/overlayscrollbars/types/support/dom/offset.d.ts

@@ -1,8 +1,3 @@
-export declare const offset: (elm: HTMLElement | null) => {
-    left: number;
-    top: number;
-};
-export declare const position: (elm: HTMLElement | null) => {
-    left: number;
-    top: number;
-};
+import { XY } from 'support/dom';
+export declare const offset: (elm: HTMLElement | null) => XY;
+export declare const position: (elm: HTMLElement | null) => XY;