feat: Added polyfill support for ResizeObserver

README.md

@@ -493,6 +493,7 @@ And, if you request `performance.now`, `date.now` will also be included since th
 - document-fragment
 - intersection-observer
 - mutation-observer
+- resize-observer
 - custom-elements
 - shadow-dom
 - template

package.json

@@ -98,6 +98,7 @@
 		"regenerator-runtime": "^0.12.1",
 		"requestanimationframe": "0.0.23",
 		"requestidlecallback": "^0.3.0",
+		"resize-observer": "^1.0.0-alpha.1",
 		"semver": "^5.5.1",
 		"systemjs": "^0.21.5",
 		"temp-dir": "^1.0.0",

src/constant/constant.ts

@@ -2557,6 +2557,13 @@ export const constant: IConstant = {
 			features: ["mutationobserver"],
 			version: environment.NPM_PACKAGE_DEPENDENCIES_MUTATIONOBSERVER_SHIM,
 			dependencies: []
+		},
+		"resize-observer": {
+			library: "resize-observer",
+			relativePaths: ["dist/resize-observer.min.js"],
+			features: ["resizeobserver"],
+			version: environment.NPM_PACKAGE_DEPENDENCIES_RESIZE_OBSERVER,
+			dependencies: ["get-computed-style", "requestanimationframe"]
 		}
 	}
 };

src/environment/environment-defaults.ts

@@ -4,6 +4,7 @@ export const environmentDefaults = {
 	NPM_PACKAGE_HOMEPAGE: "",
 	NPM_PACKAGE_MAIN: "",
 	NPM_PACKAGE_DEPENDENCIES_INTERSECTION_OBSERVER: "",
+	NPM_PACKAGE_DEPENDENCIES_RESIZE_OBSERVER: "",
 	NPM_PACKAGE_DEPENDENCIES_WHATWG_FETCH: "",
 	NPM_PACKAGE_DEPENDENCIES__WEBCOMPONENTS_SHADYDOM: "",
 	NPM_PACKAGE_DEPENDENCIES_POLYFILL_SERVICE: "",

src/polyfill/polyfill-name.ts

@@ -309,6 +309,7 @@ export declare type PolyfillDealiasedName =
 	|"document-fragment"
 	|"intersection-observer"
 	|"mutation-observer"
+	|"resize-observer"
 	|"custom-elements"
 	|"shadow-dom"
 	|"template"