36 lines
879 B
JavaScript
36 lines
879 B
JavaScript
import * as babel from "@babel/core";
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import vm from "vm";
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import { fileURLToPath } from "url";
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import path from "path";
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import transformCommonJS from "../lib/index.js";
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test("Re-export doesn't overwrite __esModule flag", function () {
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let code = 'export * from "./dep";';
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const depStub = {
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__esModule: false,
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};
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const context = {
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module: {
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exports: {},
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},
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require: function (id) {
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if (id === "./dep") return depStub;
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throw new Error("Unexpected dependency: " + id);
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},
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};
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context.exports = context.module.exports;
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code = babel.transform(code, {
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cwd: path.dirname(fileURLToPath(import.meta.url)),
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plugins: [[transformCommonJS, { loose: true }]],
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ast: false,
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}).code;
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vm.runInNewContext(code, context);
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// exports.__esModule shouldn't be overwritten.
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expect(context.exports.__esModule).toBe(true);
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});
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