original minified

orin_min.js

/**
 * [js-crc]{@link https://github.com/emn178/js-crc}
 *
 * @namespace crc
 * @version 0.2.0
 * @author Chen, Yi-Cyuan [emn178@gmail.com]
 * @copyright Chen, Yi-Cyuan 2015-2017
 * @license MIT
 */
!(function () {
    "use strict";
    var e = "object" == typeof window ? window : {},
        o = !e.JS_CRC_NO_NODE_JS && "object" == typeof process && process.versions && process.versions.node;
    o && (e = global);
    var n,
        t,
        r,
        f,
        a = !e.JS_CRC_NO_COMMON_JS && "object" == typeof module && module.exports,
        i = "function" == typeof define && define.amd,
        l = !e.JS_CRC_NO_ARRAY_BUFFER && "undefined" != typeof ArrayBuffer,
        s = "0123456789abcdef".split(""),
        c = [
            { name: "crc32", polynom: 3988292384, initValue: -1, bytes: 4 },
            { name: "crc16", polynom: 40961, initValue: 0, bytes: 2 },
        ];
    for (n = 0; n < c.length; ++n) {
        var u = c[n];
        for (
            u.method = (function (e) {
                return function (o) {
                    return d(o, e);
                };
            })(u),
                u.table = [],
                t = 0;
            256 > t;
            ++t
        ) {
            for (f = t, r = 0; 8 > r; ++r) f = 1 & f ? u.polynom ^ (f >>> 1) : f >>> 1;
            u.table[t] = f >>> 0;
        }
    }
    var d = function (e, o) {
            var n = "string" != typeof e;
            n && l && e instanceof ArrayBuffer && (e = new Uint8Array(e));
            var t,
                r,
                f = o.initValue,
                a = e.length,
                i = o.table;
            if (n) for (r = 0; a > r; ++r) f = i[255 & (f ^ e[r])] ^ (f >>> 8);
            else
                for (r = 0; a > r; ++r)
                    (t = e.charCodeAt(r)),
                        128 > t
                            ? (f = i[255 & (f ^ t)] ^ (f >>> 8))
                            : 2048 > t
                            ? ((f = i[255 & (f ^ (192 | (t >> 6)))] ^ (f >>> 8)), (f = i[255 & (f ^ (128 | (63 & t)))] ^ (f >>> 8)))
                            : 55296 > t || t >= 57344
                            ? ((f = i[255 & (f ^ (224 | (t >> 12)))] ^ (f >>> 8)), (f = i[255 & (f ^ (128 | ((t >> 6) & 63)))] ^ (f >>> 8)), (f = i[255 & (f ^ (128 | (63 & t)))] ^ (f >>> 8)))
                            : ((t = 65536 + (((1023 & t) << 10) | (1023 & e.charCodeAt(++r)))),
                              (f = i[255 & (f ^ (240 | (t >> 18)))] ^ (f >>> 8)),
                              (f = i[255 & (f ^ (128 | ((t >> 12) & 63)))] ^ (f >>> 8)),
                              (f = i[255 & (f ^ (128 | ((t >> 6) & 63)))] ^ (f >>> 8)),
                              (f = i[255 & (f ^ (128 | (63 & t)))] ^ (f >>> 8)));
            f ^= o.initValue;
            var c = "";
            return o.bytes > 2 && (c += s[(f >> 28) & 15] + s[(f >> 24) & 15] + s[(f >> 20) & 15] + s[(f >> 16) & 15]), (c += s[(f >> 12) & 15] + s[(f >> 8) & 15] + s[(f >> 4) & 15] + s[15 & f]);
        },
        p = {};
    for (n = 0; n < c.length; ++n) {
        var u = c[n];
        p[u.name] = u.method;
    }
    if (a) module.exports = p;
    else {
        for (n = 0; n < c.length; ++n) {
            var u = c[n];
            e[u.name] = u.method;
        }
        i &&
            define(function () {
                return p;
            });
    }
})();