跳至主要內容

@babel/plugin-transform-optional-catch-binding

資訊

此外掛程式包含在 @babel/preset-env 中，在 ES2019 中

範例​

JavaScript
try {
  throw 0;
} catch {
  doSomethingWhichDoesNotCareAboutTheValueThrown();
}
JavaScript
try {
  throw 0;
} catch {
  doSomethingWhichDoesNotCareAboutTheValueThrown();
} finally {
  doSomeCleanup();
}

安裝​

npm install --save-dev @babel/plugin-transform-optional-catch-binding

用法​

babel.config.json
{
  "plugins": ["@babel/plugin-transform-optional-catch-binding"]
}

透過 CLI​

Shell
babel --plugins @babel/plugin-transform-optional-catch-binding script.js

透過 Node API​

JavaScript
require("@babel/core").transformSync("code", {
  plugins: ["@babel/plugin-transform-optional-catch-binding"],
});

參考資料​