swc/crates/swc_bundler/tests/.cache/untrusted/685cdb36fdf4510e64ad7e851399d7d98b74f7a7.ts
2021-11-09 20:42:49 +09:00

57 lines
1.9 KiB
TypeScript

// Loaded from https://dev.jspm.io/npm:pako@1.0.11/lib/zlib/adler32.dew.js
var exports = {},
_dewExec = false;
export function dew() {
if (_dewExec) return exports;
_dewExec = true;
// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It isn't worth it to make additional optimizations as in original.
// Small size is preferable.
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
function adler32(adler, buf, len, pos) {
var s1 = adler & 0xffff | 0,
s2 = adler >>> 16 & 0xffff | 0,
n = 0;
while (len !== 0) {
// Set limit ~ twice less than 5552, to keep
// s2 in 31-bits, because we force signed ints.
// in other case %= will fail.
n = len > 2000 ? 2000 : len;
len -= n;
do {
s1 = s1 + buf[pos++] | 0;
s2 = s2 + s1 | 0;
} while (--n);
s1 %= 65521;
s2 %= 65521;
}
return s1 | s2 << 16 | 0;
}
exports = adler32;
return exports;
}