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

信息

此插件包含在 @babel/preset-env 中，在 ES2019 中

¥This plugin is included in @babel/preset-env, in ES2019

示例​

¥Examples

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

安装​

¥Installation

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

用法​

¥Usage

¥With a configuration file (Recommended)

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

通过 CLI​

¥Via CLI

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

通过 Node API​

¥Via Node API

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

参考​

¥References