汇总无法从commonjs模块中看到命名导出

Question

我有一个简单的AWS Lambda函数（state-info.ts），我正在与Rollup一起发抖，它给了我以下错误：

[！]错误：'DB'未通过../../forest-fire/abstracted-admin/lib/index.js导出

https://github.com/rollup/rollup/wiki/Troubleshooting#name-is-not-exported-by-module
src/state-info.ts (10:9)
8: import { Lambda } from "aws-sdk";
9: import { STATES } from "./models/shared";
10: import { DB } from "abstracted-admin";
            ^
11: import { StateInfo } from "./models/StateInfo";
12: import { IApiResponse } from "./shared/ApiRetriever";

现在恰巧我写了一个模块abstracted-admin（目前在npm的v0.6.5）它正在抱怨它并且它将导出DB作为命名导出（并作为默认导出）。但由于某些原因，Rollup不满意。

我已经为完整的背景创建了一个视频演示：video。

对于那些不喜欢视频的人，以下是关键事实/文件：

abstracted-admin/lib/index.d.ts：

import { DB } from "./db";
export default DB;
export { DB, IFirebaseConfig, IFirebaseListener } from "./db";

abstracted-admin/lib/index.js：

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const db_1 = require("./db");
exports.default = db_1.DB;
var db_2 = require("./db");
exports.DB = db_2.DB;

从abstracted-admin/package.json内：

{
  ...
  "files": ["lib"],
  "main": "lib/index.js",
  "typings": "lib/index.d.ts",
}

state-info.ts（又名，正在卷起的文件）：

import {
  IDictionary,
  AWSGatewayCallback,
  IAWSGatewayRequest,
  IAWSGatewayResponse
} from "common-types";
import GetStateInfo from "./vote-smart/get-state-info";
import { Lambda } from "aws-sdk";
import { STATES } from "./models/shared";
import { DB } from "abstracted-admin";
import { StateInfo } from "./models/StateInfo";
import { IApiResponse } from "./shared/ApiRetriever";
/** ... */

同时我的汇总配置是：

import cjs from "rollup-plugin-commonjs";
import resolve from "rollup-plugin-node-resolve";
import json from "rollup-plugin-json";
import ts from "rollup-plugin-typescript2";
import globals from "rollup-plugin-node-globals";

export default {
  input: "src/state-info.ts",
  output: {
    file: "lib/state-info-rolled.js",
    format: "cjs"
  },
  external: ["aws-sdk"],
  plugins: [
    globals(),
    json(),
    cjs({
      include: "node_modules/**",
      exclude: ["node_modules/aws-sdk/**"]
    }),
    ts(),
    resolve({
      jsnext: true,
      main: true,
      browser: false,
      preferBuiltins: false,
      extensions: [".js", ".json"]
    })
  ]
};

Answer 1

我相信Rollup在这种情况下预计如下：

import admin from "abstracted-admin";
const { DB } = admin;

它与Webpack的行为不同，并且抓住了我几次。