@dillonkearns/elm-graphql/examples/src/subscription/node_modules/es5-ext/string/is-string.js

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"use strict";

var objToString = Object.prototype.toString, id = objToString.call("");

module.exports = function (value) {
	return (
		typeof value === "string" ||
		(value &&
			typeof value === "object" &&
			(value instanceof String || objToString.call(value) === id)) ||
		false
	);
};