babel-plugins

babel 插件表

babel-plugin-import-module

babel-plugin-append-function-body

babel-plugin-replace-operator

babel 插件开发

AST 核心节点类型

https://github.com/babel/babylon/blob/master/ast/spec.md

• BlockStatement: 块级表达式
• BinaryExpression: 二元表达式
• CallExpression: 函数调用表达式
• MemberExpression: 成员表达式
• Literal: 文字

Literals

• RegExpLiteral
• NullLiteral
• BooleanLiteral
• NumericLiteral

Statements 语句

• BlockStatement: 块级表达式
• ExpressionStatement
• EmptyStatement: 空语句
• DebuggerStatement： debugger 语句
• ReturnStatement
• LabeledStatement (以break / continue标签为前缀的语句)
• BreakStatement
• ContinueStatement
• IfStatement
• SwitchStatement
• ThrowStatement
• TryStatement
• WhileStatement
• DoWhileStatement
• ForStatement
• ForInStatement
• ForOfStatement

Declarations 声明

• FunctionDeclaration
• VariableDeclaration

Expressions

• Super

• Import

• ThisExpression

• ArrowFunctionExpression

• YieldExpression

• AwaitExpression

• ObjectExpression

  • ObjectProperty
  • ObjectMethod
  • Objectmember

• FunctionExpression

• UnaryExpression

• UpdateExpression

• BinaryExpression

• AssignmentExpression

• LogicalExpression

• MemberExpression

• BindExpression

• ConditionalExpression

• CallExpression

• NewExpression

• SequenceExpression

• DoExpression

Template Literals

• TemplateLiteral
• TaggedTemplateExpression
• TemplateElement

其他说明

一元运算符 UnaryOperator: { "-" | "+" | "!" | "~" | "typeof" | "void" | "delete" | "throw" }

UpdateOperator { "++" | "--" }

二元运算符 BinaryOperator { "==" | "!=" | "===" | "!==" | "<" | "<=" | ">" | ">=" | "<<" | ">>" | ">>>" | "+" | "-" | "*" | "/" | "%" | "|" | "^" | "&" | "in" | "instanceof" | "|>" }

赋值运算符 AssignmentOperator { "=" | "+=" | "-=" | "*=" | "/=" | "%=" | "<<=" | ">>=" | ">>>=" | "|=" | "^=" | "&=" }

逻辑运算符 LogicalOperator { "||" | "&&" | "??" }

babel 插件

Babel的核心lib:

• babel-core: Babel的核心库，提供了将代码编译转化的能力
• babel-types: 提供AST树节点的类型
• babel-template: 可以将普通字符串转化成AST，提供更便捷的使用