linuxenko

  IMAGE_MAGIC = {
    'JPG' => 'ffd8',
    'BMP' => '424d',
    'TIFF-LE' => '49492a00',
    'TIFF-BE' => '4d4d002a',
    'GIF87a' => '474946383761',
    'GIF89a' => '474946383961',
    'PNG' => '89504e470d0a1a0a',
  }.freeze
  IMAGE_MAGIC_LEN = (IMAGE_MAGIC.values.map(&:size).max / 2.0).ceil

linuxenko

Object.getOwnPropertyDescriptors = function getOwnPropertyDescriptors(obj) {
    var descriptors = {};
    for (var prop in obj) {
        if (obj.hasOwnProperty(prop)) {
            descriptors[prop] = Object.getOwnPropertyDescriptor(obj, prop);
        }
    }
    return descriptors;
};

linuxenko

var str = 'class ಠ_ಠ extends Array {constructor(j = "a", ...c) {const q = (({u: e}) => {return { [`s${c}`]: Symbol(j) };})({});super(j, q, ...c);}}' + 
          'new Promise((f) => {const a = function* (){return "\u{20BB7}".match(/./u)[0].length === 2 || true;};for (let vre of a()) {' +
          'const [uw, as, he, re] = [new Set(), new WeakSet(), new Map(), new WeakMap()];break;}f(new Proxy({}, {get: (han, h) => h in han ? han[h] ' + 
          ': "42".repeat(0o10)}));}).then(bi => new ಠ_ಠ(bi.rd));';

try {
  eval(str);
} catch(e) {
  alert('Your browser does not support ES6!')
}

linuxenko

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