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@babel/plugin-transform-unicode-regex

信息

此插件包含在 @babel/preset-env 中

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

此插件转换正则表达式字面量以支持 /u 标志。它不会修补 new RegExp 构造函数，因为它的参数不能静态地预先转换：要处理函数/类的运行时行为，你需要改用 polyfill。

¥This plugin transforms regular expression literals to support the /u flag. It does not patch the new RegExp constructor, since its arguments cannot be pre-transformed statically: to handle runtime behavior of functions/classes, you will need to use a polyfill instead.

示例​

¥Example

输入

¥In

JavaScript
var string = "foo💩bar";
var match = string.match(/foo(.)bar/u);

输出

¥Out

JavaScript
var string = "foo💩bar";
var match = string.match(
  /foo((?:[\0-\t\x0B\f\x0E-\u2027\u202A-\uD7FF\uE000-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]))bar/
);

安装​

¥Installation

npm install --save-dev @babel/plugin-transform-unicode-regex

用法​

¥Usage

¥With a configuration file (Recommended)

babel.config.json
{
  "plugins": ["@babel/plugin-transform-unicode-regex"]
}

通过 CLI​

¥Via CLI

Shell
babel --plugins @babel/plugin-transform-unicode-regex script.js

通过 Node API​

¥Via Node API

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