package.json

{
  "name": "tsc-tsx",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "@types/react": "^17.0.3",
    "typescript": "3.9.9"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "jsx": "react",
    "target": "es6",                          
    "module": "commonjs",                     
    "strict": true,                           
  }
}

index.tsx

function INode()  {
    return <div>xxx</div>;
}

"jsx": "react",

yarn tsc
生成 index.js

"use strict";
function INode() {
    return React.createElement("div", null, "xxx");
}

"jsx": "react-native",

yarn tsc
生成index.js

"use strict";
function INode() {
    return <div>xxx</div>;
}

"jsx": "preserve",

yarn tsc
生成 index.jsx

"use strict";
function INode() {
    return <div>xxx</div>;
}