@babel/plugin-proposal-throw-expressions

Example

function test(param = throw new Error("required!")) {
  const test = param === true || throw new Error("Falsy!");
}

npm install --save-dev @babel/plugin-proposal-throw-expressions

{
  "plugins": ["@babel/plugin-proposal-throw-expressions"]
}

babel --plugins @babel/plugin-proposal-throw-expressions script.js

require("@babel/core").transformSync("code", {
  plugins: ["@babel/plugin-proposal-throw-expressions"],
});