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

信息

此插件包含在 @babel/preset-env 中，位于 ES2019

示例​

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

安装​

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

用法​

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

通过 CLI​

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

通过 Node API​

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

参考​