fix(typescript): update readme and peerDeps version (#830)

* update plugin typescript readme

* Update package.json

Author: huozhi

packages/typescript/README.md

@@ -13,7 +13,7 @@
 
 ## Requirements
 
-This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v8.0.0+) and Rollup v1.20.0+. This plugin also requires at least [TypeScript 3.4](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-4.html).
+This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v8.0.0+) and Rollup v1.20.0+. This plugin also requires at least [TypeScript 3.7](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html).
 
 ## Install
 

packages/typescript/package.json

@@ -48,7 +48,7 @@
   "peerDependencies": {
     "rollup": "^2.14.0",
     "tslib": "*",
-    "typescript": ">=3.4.0"
+    "typescript": ">=3.7.0"
   },
   "dependencies": {
     "@rollup/pluginutils": "^3.1.0",