fix resize observer (#48)

see : juggle/resize-observer#141

polyfills/ResizeObserver/patch.jsdiff

@@ -0,0 +1,36 @@
+===================================================================
+--- a/polyfills/ResizeObserver/polyfill.js
++++ b/polyfills/ResizeObserver/polyfill.js
+@@ -1,8 +1,4 @@
+-(function (global, factory) {
+-    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+-    typeof define === 'function' && define.amd ? define(['exports'], factory) :
+-    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.ResizeObserver = {}));
+-})(this, (function (exports) { 'use strict';
++(function (global) {
+
+     var resizeObservers = [];
+
+@@ -109,7 +105,7 @@
+
+     var cache = new WeakMap();
+     var scrollRegexp = /auto|scroll/;
+-    var verticalRegexp = /^tb|vertical/;
++    var verticalRegexp = /^tb|^vertical/;
+     var IE = (/msie|trident/i).test(global.navigator && global.navigator.userAgent);
+     var parseDimension = function (pixel) { return parseFloat(pixel || '0'); };
+     var size = function (inlineSize, blockSize, switchSizes) {
+@@ -503,10 +499,7 @@
+         return ResizeObserver;
+     }());
+
+-    exports.ResizeObserver = ResizeObserver;
+-    exports.ResizeObserverEntry = ResizeObserverEntry;
+-    exports.ResizeObserverSize = ResizeObserverSize;
++    global.ResizeObserver = ResizeObserver;
++    global.ResizeObserverEntry = ResizeObserverEntry;
+
+-    Object.defineProperty(exports, '__esModule', { value: true });
+-
+-}));
++}(self));

polyfills/ResizeObserver/polyfill.js

@@ -1,8 +1,4 @@
-(function (global, factory) {
-    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
-    typeof define === 'function' && define.amd ? define(['exports'], factory) :
-    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.ResizeObserver = {}));
-})(this, (function (exports) { 'use strict';
+(function (global) {
 
     var resizeObservers = [];
 
@@ -109,7 +105,7 @@
 
     var cache = new WeakMap();
     var scrollRegexp = /auto|scroll/;
-    var verticalRegexp = /^tb|vertical/;
+    var verticalRegexp = /^tb|^vertical/;
     var IE = (/msie|trident/i).test(global.navigator && global.navigator.userAgent);
     var parseDimension = function (pixel) { return parseFloat(pixel || '0'); };
     var size = function (inlineSize, blockSize, switchSizes) {
@@ -503,11 +499,7 @@
         return ResizeObserver;
     }());
 
-    exports.ResizeObserver = ResizeObserver;
-    exports.ResizeObserverEntry = ResizeObserverEntry;
-    exports.ResizeObserverSize = ResizeObserverSize;
+    global.ResizeObserver = ResizeObserver;
+    global.ResizeObserverEntry = ResizeObserverEntry;
 
-    Object.defineProperty(exports, '__esModule', { value: true });
-
-}));
-;self.ResizeObserverEntry = ResizeObserver.ResizeObserverEntry;self.ResizeObserver=ResizeObserver.ResizeObserver;
+}(self));

polyfills/ResizeObserver/update.task.js

@@ -1,9 +1,14 @@
 'use strict';
 
 var fs = require('fs');
+var diff = require('diff');
+var process = require('process');
 var path = require('path');
-var resizeObserverPolyfillOutput = path.resolve('polyfills/ResizeObserver/polyfill.js');
 
-var polyfill = fs.readFileSync(resizeObserverPolyfillOutput, 'utf-8');
-polyfill += ';self.ResizeObserverEntry = ResizeObserver.ResizeObserverEntry;self.ResizeObserver=ResizeObserver.ResizeObserver;'
-fs.writeFileSync(resizeObserverPolyfillOutput, polyfill, 'utf-8');
+var polyfill = fs.readFileSync(path.join(__dirname, './polyfill.js'), 'utf8');
+var patch = fs.readFileSync(path.join(__dirname, './patch.jsdiff'), 'utf8');
+
+var patched = diff.applyPatch(polyfill, patch);
+
+if (patched === false) {process.exit(1);}
+fs.writeFileSync(path.join(__dirname, './polyfill.js'), patched);