feat(typescript): add TypeScript v3.9 support

package.json

@@ -47,34 +47,34 @@
 	],
 	"license": "MIT",
 	"devDependencies": {
-		"@types/prettier": "^1.19.0",
-		"@types/node": "^13.9.1",
-		"@types/semver": "^7.1.0",
 		"@rollup/plugin-alias": "^3.0.1",
 		"@rollup/plugin-commonjs": "^11.0.2",
 		"@rollup/plugin-json": "^4.0.2",
-		"@typescript-eslint/eslint-plugin": "^2.23.0",
-		"@typescript-eslint/parser": "^2.23.0",
+		"@types/node": "^13.9.5",
+		"@types/prettier": "^1.19.1",
+		"@types/semver": "^7.1.0",
+		"@typescript-eslint/eslint-plugin": "^2.25.0",
+		"@typescript-eslint/parser": "^2.25.0",
 		"@wessberg/rollup-plugin-ts": "^1.2.21",
 		"@wessberg/scaffold": "^1.0.29",
 		"@wessberg/ts-config": "^1.0.8",
-		"ava": "3.5.0",
+		"ava": "3.5.1",
 		"babel-preset-minify": "^0.5.1",
 		"core-js": "^3.6.4",
 		"eslint": "^6.8.0",
-		"eslint-config-prettier": "^6.10.0",
+		"eslint-config-prettier": "^6.10.1",
 		"eslint-plugin-import": "^2.20.1",
-		"eslint-plugin-jsdoc": "^22.0.1",
+		"eslint-plugin-jsdoc": "^22.1.0",
 		"husky": "^4.2.3",
 		"np": "5.2.1",
-		"pnpm": "^4.11.5",
-		"prettier": "^1.19.1",
+		"pnpm": "^4.12.1",
+		"prettier": "^2.0.2",
 		"pretty-quick": "^2.0.1",
 		"rimraf": "^3.0.2",
-		"rollup": "^2.0.6",
+		"rollup": "^2.2.0",
 		"standard-changelog": "^2.0.21",
-		"ts-node": "8.6.2",
-		"typescript": "^3.8.3",
+		"ts-node": "8.8.1",
+		"typescript": "^3.9.0-beta",
 		"typescript-3-0-1": "npm:[email protected]",
 		"typescript-3-1-1": "npm:[email protected]",
 		"typescript-3-2-1": "npm:[email protected]",
@@ -86,30 +86,30 @@
 		"typescript-3-8-3": "npm:[email protected]"
 	},
 	"dependencies": {
-		"@types/babel__core": "^7.1.6",
-		"@babel/core": "^7.8.7",
+		"@babel/core": "^7.9.0",
 		"@babel/plugin-proposal-async-generator-functions": "^7.8.3",
 		"@babel/plugin-proposal-json-strings": "^7.8.3",
-		"@babel/plugin-proposal-object-rest-spread": "^7.8.3",
+		"@babel/plugin-proposal-object-rest-spread": "^7.9.0",
 		"@babel/plugin-proposal-optional-catch-binding": "^7.8.3",
 		"@babel/plugin-proposal-unicode-property-regex": "^7.8.8",
 		"@babel/plugin-syntax-dynamic-import": "^7.8.3",
-		"@babel/plugin-transform-runtime": "^7.8.3",
-		"@babel/preset-env": "^7.8.7",
-		"@babel/runtime": "^7.8.7",
+		"@babel/plugin-transform-runtime": "^7.9.0",
+		"@babel/preset-env": "^7.9.0",
+		"@babel/runtime": "^7.9.2",
 		"@rollup/pluginutils": "^3.0.8",
+		"@types/babel__core": "^7.1.6",
 		"@wessberg/browserslist-generator": "^1.0.34",
 		"@wessberg/stringutil": "^1.0.19",
 		"@wessberg/ts-clone-node": "^0.3.4",
-		"browserslist": "^4.9.1",
+		"browserslist": "^4.11.0",
 		"chalk": "^3.0.0",
 		"magic-string": "^0.25.7",
 		"slash": "^3.0.0",
 		"tslib": "^1.11.1"
 	},
 	"peerDependencies": {
-		"rollup": "^1.x",
-		"typescript": "^3.x"
+		"rollup": ">= 1.x",
+		"typescript": ">= 3.x"
 	},
 	"main": "./dist/cjs/index.js",
 	"module": "./dist/esm/index.js",