@dillonkearns/elm-graphql/examples/src/subscription/node_modules/zen-observable/test/symbol.js

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import { TestRunner } from "moon-unit";

new TestRunner().run({
  "Symbol.observable is polyfilled" (test) {
    Symbol.observable = undefined;
    require("../zen-observable.js");
    test.equals(typeof Symbol.observable, "symbol");
  },
});