'use strict';
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/* global Bun, Deno -- detection */
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var globalThis = require('../internals/global-this');
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var userAgent = require('../internals/environment-user-agent');
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var classof = require('../internals/classof-raw');
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var userAgentStartsWith = function (string) {
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return userAgent.slice(0, string.length) === string;
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};
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module.exports = (function () {
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if (userAgentStartsWith('Bun/')) return 'BUN';
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if (userAgentStartsWith('Cloudflare-Workers')) return 'CLOUDFLARE';
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if (userAgentStartsWith('Deno/')) return 'DENO';
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if (userAgentStartsWith('Node.js/')) return 'NODE';
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if (globalThis.Bun && typeof Bun.version == 'string') return 'BUN';
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if (globalThis.Deno && typeof Deno.version == 'object') return 'DENO';
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if (classof(globalThis.process) === 'process') return 'NODE';
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if (globalThis.window && globalThis.document) return 'BROWSER';
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return 'REST';
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})();
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