feat(es.map): add support for the Stage-2 proposal Map.prototype.upsert

README.md

@@ -539,6 +539,7 @@ And, if you request `performance.now`, `date.now` will also be included since th
   - `es.symbol.iterator`
   - `es.symbol.constructor`
   - `es.symbol.match`
+  - `es.symbol.match-all`
   - `es.symbol.replace`
   - `es.symbol.search`
   - `es.symbol.species`
@@ -638,6 +639,7 @@ And, if you request `performance.now`, `date.now` will also be included since th
   - `es.map.reduce`
   - `es.map.some`
   - `es.map.update`
+  - `es.map.upsert`
 - **`esnext.weak-map`**
   - `es.weak-map.from`
   - `es.weak-map.of`

package.json

@@ -86,9 +86,9 @@
 		"chalk": "^2.4.2",
 		"console-polyfill": "^0.3.0",
 		"construct-style-sheets-polyfill": "^2.2.10",
-		"core-js": "^3.2.1",
-		"core-js-builder": "^3.2.1",
-		"devcert": "^1.0.2",
+		"core-js": "^3.6.4",
+		"core-js-builder": "^3.6.4",
+		"devcert": "^1.1.0",
 		"events-polyfill": "^2.1.2",
 		"file-type": "^12.3.0",
 		"find-up": "^4.1.0",
@@ -133,6 +133,10 @@
 	"types": "./dist/index.d.ts",
 	"typings": "./dist/index.d.ts",
 	"es2015": "./dist/index.js",
+	"funding": {
+		"type": "github",
+		"url": "https://github.com/wessberg/polyfiller?sponsor=1"
+	},
 	"repository": {
 		"type": "git",
 		"url": "https://github.com/wessberg/polyfiller.git"

src/constant/constant.ts

@@ -1810,6 +1810,15 @@ export const constant: IConstant = {
 			dependencies: ["es.map"],
 			contexts: ALL_CONTEXTS
 		},
+		"es.map.upsert": {
+			library: "core-js",
+			relativePaths: ["modules/esnext.map.upsert.js"],
+			// TODO: Update when MDN or Caniuse Compatibility is added
+			features: [],
+			version: environment.NPM_PACKAGE_DEPENDENCIES_CORE_JS,
+			dependencies: ["es.map"],
+			contexts: ALL_CONTEXTS
+		},
 		"es.weak-map": {
 			library: "core-js",
 			relativePaths: ["modules/es.weak-map.js"],
@@ -2588,7 +2597,8 @@ export const constant: IConstant = {
 				"es.map.of",
 				"es.map.reduce",
 				"es.map.some",
-				"es.map.update"
+				"es.map.update",
+				"es.map.upsert"
 			]
 		},
 		"esnext.weak-map": {

src/polyfill/polyfill-name.ts

@@ -168,6 +168,7 @@ export declare type PolyfillDealiasedName =
 	| "es.map.reduce"
 	| "es.map.some"
 	| "es.map.update"
+	| "es.map.upsert"
 	| "es.weak-map"
 	| "es.weak-map.from"
 	| "es.weak-map.of"