# 安装

npm install @babel/helper-validator-identifier

yarn

yarn add @babel/helper-validator-identifier

pnpm

pnpm add @babel/helper-validator-identifier

# `用法`

要在代码中使用包，请从 @babel/helper-validator-identifier:

my-babel-plugin.js

import {
  isIdentifierName,
  isIdentifierStart,
  isIdentifierChar,
  isReservedWord,
  isStrictBindOnlyReservedWord,
  isStrictBindReservedWord,
  isStrictReservedWord,
  isKeyword,
} from "@babel/helper-validator-identifier";

# isIdentifierName

function isIdentifierName(name: string): boolean

isIdentifierName函数检查给定的字符串是否可以是有效的标识符名称。注意，它不处理unicode转义序列。例如，isIdentifierName("\u0061")返回false，而\u0061可能是JavaScript标识符名称(a)。

# `import { named as _hintedName } from "source"` (opens new window)

# isIdentifierStart

function isIdentifierStart(codepoint: number): boolean

isIdentifierStart函数检查给定的Unicode码点是否可以启动标识符，如IdentifierStartChar所定义的。

# isIdentifierChar

function isIdentifierChar(codepoint: number): boolean

isIdentifierChar函数检查给定的Unicode码位是否可以作为标识符的一部分，如IdentifierPartChar所定义的。

# 关键字和保留字

这些帮助程序检测关键字和保留字。有关更多信息，请参阅实现。

function isReservedWord(word: string, inModule: boolean): boolean
function isStrictReservedWord(word: string, inModule: boolean): boolean
function isStrictBindOnlyReservedWord(word: string): boolean
function isStrictBindReservedWord(word: string, inModule: boolean): boolean
function isKeyword(word: string): boolean

← helper-module-imports