chore!: update typescript-related dependencies (#6129)

docs/migrations/migrate-from-v4.md

@@ -99,7 +99,10 @@ Though it works in all our tests, please be aware that this approach is still so
 * Dropped TSLint support. As [TSLint has been deprecated](https://github.com/palantir/tslint/issues/4534), we [removed](https://github.com/vuejs/vue-cli/pull/5065) all TSLint-related code in this version.
 Please consider switching to ESLint. You can check out [`tslint-to-eslint-config`](https://github.com/typescript-eslint/tslint-to-eslint-config) for a mostly automatic migration experience.
 * `ts-loader` is upgraded from v6 to v8. It now only supports TypeScript >= 3.6.
-* `fork-ts-checker-webpack-plugin` is upgraded from v3.x to v5.x, you can see the detailed breaking changes at [`fork-ts-checker=webpack-plugin` v4.0.0 release](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/releases/tag/v4.0.0) and [`fork-ts-checker=webpack-plugin` v5.0.0 release](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/releases/tag/v5.0.0)
+* `fork-ts-checker-webpack-plugin` is upgraded from v3.x to v6.x, you can see the detailed breaking changes in its release notes:
+  * [v4.0.0](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/releases/tag/v4.0.0)
+  * [v5.0.0](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/releases/tag/v5.0.0)
+  * [v6.0.0](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/releases/tag/v6.0.0)
 
 ### E2E-Cypress Plugin
 

package.json

@@ -75,7 +75,7 @@
     "prettier": ">= 1.13.0",
     "rimraf": "^3.0.2",
     "semver": "^7.3.4",
-    "typescript": "~3.9.3",
+    "typescript": "~4.1.2",
     "verdaccio": "^4.10.0",
     "vuepress": "^1.6.0",
     "webpack": "^5.10.0",

packages/@vue/cli-plugin-typescript/package.json

@@ -27,7 +27,7 @@
     "@vue/cli-shared-utils": "^4.5.8",
     "babel-loader": "^8.2.2",
     "cache-loader": "^4.1.0",
-    "fork-ts-checker-webpack-plugin": "^5.0.11",
+    "fork-ts-checker-webpack-plugin": "^6.0.5",
     "globby": "^9.2.0",
     "thread-loader": "^3.0.0",
     "ts-loader": "^8.0.5",
@@ -49,8 +49,8 @@
     "@types/jest": "^26.0.17",
     "@types/mocha": "^8.0.4",
     "jscodeshift": "^0.11.0",
-    "typescript": "~3.9.3",
+    "typescript": "~4.1.2",
     "vue-class-component": "^7.2.3",
-    "vue-property-decorator": "^8.4.2"
+    "vue-property-decorator": "^9.1.2"
   }
 }

packages/@vue/cli-plugin-unit-jest/generator/index.js

@@ -26,7 +26,7 @@ module.exports = (api, options, rootOptions, invoking) => {
       devDependencies: {
         'vue-jest': '^5.0.0-0',
         // vue-jest 5.0.0-alpha.1 requires typescript to be present
-        'typescript': '~3.9.3'
+        'typescript': '~4.1.2'
       },
       jest: {
         transform: {

packages/@vue/cli-ui/package.json

@@ -60,7 +60,7 @@
     "prismjs": "^1.21.0",
     "rss-parser": "^3.8.0",
     "shortid": "^2.2.15",
-    "typescript": "~3.9.3",
+    "typescript": "~4.1.2",
     "vue-cli-plugin-apollo": "^0.21.3",
     "watch": "^1.0.2"
   },