bail-explode-模块

将模块序列化为更容易使用的格式

import {foo, bar} from "mod";

export default function() {
  // ...
}

const baz = 42,
      bat = class Bat {};

export {
  baz,
  bat
};

创建此 AST :

Program
  body:
    - ImportDeclaration
        specifiers:
          - ImportSpecifier
          - ImportSpecifier
    - ExportDefaultDeclaration
        declaration: FunctionDeclaration
    - VariableDeclaration
        declarations:
          - VariableDeclarator
          - VariableDeclarator
    - ExportNamedDeclaration
        specifiers:
          - ExportSpecifier
          - ExportSpecifier

会被炸成这样:

{
  imports: [
    { kind: "value", local: "foo", external: "foo", source: "mod", loc: {...} },
    { kind: "value", local: "bar", external: "bar", source: "mod", loc: {...} },
  ],
  exports: [
    { local: "_default", external: "default", loc: {...} },
    { local: "baz", external: "baz", loc: {...} },
    { local: "bat", external: "bat", loc: {...} },
  },
  statements: [
    { type: "FunctionDeclaration" },
    { type: "VariableDeclaration", declarations: VariableDeclarator },
    { type: "VariableDeclaration", declarations: VariableDeclarator },
  ],
}

将进口/出口序列化,使之易于使用格式

// input
import a, {b} from "mod";
import * as c from "mod";
export default function d() {}
export {e, f as g};
export {default as h} from "mod";
export * from "mod";

// output
{
  imports: [
    { kind: "value", local: "a", external: "a", source: "mod" },
    { kind: "value", local: "b", external: "b", source: "mod" },
    { kind: "value", local: "c", source: "d" },
  ],
  exports: [
    { local: "d", external: "d" },
    { local: "e", external: "e" },
    { local: "f", external: "g" },
    { local: "default", external: "g", source: "mod" },
    { source: "mod" },
  ]
}

简化声明,以创建每个声明1个具有约束力(即变量)

// input
function a() {}
var b,
    c;

// output (printed)
function a() {}
var b;
var c;

将出口值与其出口相分离

// input
export function a() {}
export default function() {}

// output (printed)
function a() {}
var _default = function() {};
export {a};
export default _default;