升级typescript4.3.2后，不让用.ts后缀了吗？

从ts 4.1.5升级到4.3.2后跑的好好的代码，不ok了？

import api from '@/api/common.ts'代码报错

An import path cannot end with a '.ts' extension. Consider importing '@/api/common.js' instead.

这是为啥?
以下代码为：tsconfig.json

{
  "compilerOptions": {
    "target": "es2019",
    "module": "esnext",
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": true,
    "jsx": "preserve",
    "incremental": true,
    "isolatedModules": true,
    "strict": true,
    "resolveJsonModule": true,
    "importHelpers": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "skipLibCheck": true,
    "noUnusedLocals": false,
    "types": [
      "webpack-env",
      "jest"
    ],
    "lib": [
      "esnext",
      "dom",
      "dom.iterable",
      "scripthost"
    ]
  },
  "includes": ["../shared/**/**"],
  "exclude": [
    "node_modules"
  ]
}

啥？