fd5c0c9747
* applied eslint * add locales and lint the project * removed error boundary * updated locales * fix min files * fix locales
41 lines
1 KiB
TypeScript
41 lines
1 KiB
TypeScript
import * as fzstd from 'fzstd';
|
|
import { gunzipSync } from 'fflate';
|
|
|
|
const unpack = (b: Uint8Array): Uint8Array => {
|
|
// zstd magical numbers 40 181 47 253
|
|
const isZstd =
|
|
b[0] === 0x28 && b[1] === 0xb5 && b[2] === 0x2f && b[3] === 0xfd;
|
|
const isGzip = b[0] === 0x1f && b[1] === 0x8b && b[2] === 0x08;
|
|
let data = b;
|
|
if (isGzip) {
|
|
const now = performance.now();
|
|
const uData = gunzipSync(b);
|
|
console.debug(
|
|
'Gunzip time',
|
|
`${Math.floor(performance.now() - now)}ms`,
|
|
'size',
|
|
Math.floor(b.byteLength / 1024),
|
|
'->',
|
|
Math.floor(uData.byteLength / 1024),
|
|
'kb',
|
|
);
|
|
data = uData;
|
|
}
|
|
if (isZstd) {
|
|
const now = performance.now();
|
|
const uData = fzstd.decompress(b);
|
|
console.debug(
|
|
'Zstd unpack time',
|
|
`${Math.floor(performance.now() - now)}ms`,
|
|
'size',
|
|
Math.floor(b.byteLength / 1024),
|
|
'->',
|
|
Math.floor(uData.byteLength / 1024),
|
|
'kb',
|
|
);
|
|
data = uData;
|
|
}
|
|
return data;
|
|
};
|
|
|
|
export default unpack;
|