@dillonkearns/elm-graphql/examples/src/subscription/node_modules/is-builtin-module/index.js

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'use strict';
var builtinModules = require('builtin-modules');

module.exports = function (str) {
	if (typeof str !== 'string') {
		throw new TypeError('Expected a string');
	}

	return builtinModules.indexOf(str) !== -1;
};