express-cache-file/dist/size.js

Express middleware to cache static files in server memory

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var Size;
(function (Size) {
    // reference: https://en.wikipedia.org/wiki/Byte#Units_based_on_powers_of_2
    Size.kib = 1024;
    Size.mib = Size.kib * 1024;
    Size.gib = Size.mib * 1024;
    Size.tib = Size.gib * 1024;
    Size.pib = Size.tib * 1024;
    Size.kb = 1000;
    Size.mb = Size.kb * 1000;
    Size.gb = Size.mb * 1000;
    Size.tb = Size.gb * 1000;
    Size.pb = Size.tb * 1000;
})(Size || (Size = {}));
function parseSize(size) {
    if (!size || size === 'unlimited')
        return -1;
    if (typeof size === 'number')
        return -1;
    let value = parseFloat(size);
    let unit = size.replace(value.toString(), '').trim().toLowerCase();
    if (unit.startsWith('b'))
        return value;
    if (unit.startsWith('ki'))
        return value * Size.kib;
    if (unit.startsWith('mi'))
        return value * Size.mib;
    if (unit.startsWith('gi'))
        return value * Size.gib;
    if (unit.startsWith('ti'))
        return value * Size.tib;
    if (unit.startsWith('pi'))
        return value * Size.pib;
    if (unit.startsWith('k'))
        return value * Size.kb;
    if (unit.startsWith('m'))
        return value * Size.mb;
    if (unit.startsWith('g'))
        return value * Size.gb;
    if (unit.startsWith('t'))
        return value * Size.tb;
    if (unit.startsWith('p'))
        return value * Size.pb;
    if (value < 1000)
        return value * Size.mb;
    return value;
}
exports.default = parseSize;