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* filesize\r\n *\r\n * @copyright 2020 Jason Mulligan <jason.mulligan@avoidwork.com>\r\n * @license BSD-3-Clause\r\n * @version 6.1.0\r\n */\r\n(function (global) {\r\n\tconst b = /^(b|B)$/,\r\n\t\tsymbol = {\r\n\t\t\tiec: {\r\n\t\t\t\tbits: [\"b\", \"Kib\", \"Mib\", \"Gib\", \"Tib\", \"Pib\", \"Eib\", \"Zib\", \"Yib\"],\r\n\t\t\t\tbytes: [\"B\", \"KiB\", \"MiB\", \"GiB\", \"TiB\", \"PiB\", \"EiB\", \"ZiB\", \"YiB\"]\r\n\t\t\t},\r\n\t\t\tjedec: {\r\n\t\t\t\tbits: [\"b\", \"Kb\", \"Mb\", \"Gb\", \"Tb\", \"Pb\", \"Eb\", \"Zb\", \"Yb\"],\r\n\t\t\t\tbytes: [\"B\", \"KB\", \"MB\", \"GB\", \"TB\", \"PB\", \"EB\", \"ZB\", \"YB\"]\r\n\t\t\t}\r\n\t\t},\r\n\t\tfullform = {\r\n\t\t\tiec: [\"\", \"kibi\", \"mebi\", \"gibi\", \"tebi\", \"pebi\", \"exbi\", \"zebi\", \"yobi\"],\r\n\t\t\tjedec: [\"\", \"kilo\", \"mega\", \"giga\", \"tera\", \"peta\", \"exa\", \"zetta\", \"yotta\"]\r\n\t\t};\r\n\r\n\t/**\r\n\t * filesize\r\n\t *\r\n\t * @method filesize\r\n\t * @param {Mixed} arg String, Int or Float to transform\r\n\t * @param {Object} descriptor [Optional] Flags\r\n\t * @return {String} Readable file size String\r\n\t */\r\n\tfunction filesize (arg, descriptor = {}) {\r\n\t\tlet result = [],\r\n\t\t\tval = 0,\r\n\t\t\te, base, bits, ceil, full, fullforms, locale, localeOptions, neg, num, output, round, unix, separator, spacer, standard, symbols;\r\n\r\n\t\tif (isNaN(arg)) {\r\n\t\t\tthrow new TypeError(\"Invalid number\");\r\n\t\t}\r\n\r\n\t\tbits = descriptor.bits === true;\r\n\t\tunix = descriptor.unix === true;\r\n\t\tbase = descriptor.base || 2;\r\n\t\tround = descriptor.round !== void 0 ? descriptor.round : unix ? 1 : 2;\r\n\t\tlocale = descriptor.locale !== void 0 ? descriptor.locale : \"\";\r\n\t\tlocaleOptions = descriptor.localeOptions || {};\r\n\t\tseparator = descriptor.separator !== void 0 ? descriptor.separator : \"\";\r\n\t\tspacer = descriptor.spacer !== void 0 ? descriptor.spacer : unix ? \"\" : \" \";\r\n\t\tsymbols = descriptor.symbols || {};\r\n\t\tstandard = base === 2 ? descriptor.standard || \"jedec\" : \"jedec\";\r\n\t\toutput = descriptor.output || \"string\";\r\n\t\tfull = descriptor.fullform === true;\r\n\t\tfullforms = descriptor.fullforms instanceof Array ? descriptor.fullforms : [];\r\n\t\te = descriptor.exponent !== void 0 ? descriptor.exponent : -1;\r\n\t\tnum = Number(arg);\r\n\t\tneg = num < 0;\r\n\t\tceil = base > 2 ? 1000 : 1024;\r\n\r\n\t\t// Flipping a negative number to determine the size\r\n\t\tif (neg) {\r\n\t\t\tnum = -num;\r\n\t\t}\r\n\r\n\t\t// Determining the exponent\r\n\t\tif (e === -1 || isNaN(e)) {\r\n\t\t\te = Math.floor(Math.log(num) / Math.log(ceil));\r\n\r\n\t\t\tif (e < 0) {\r\n\t\t\t\te = 0;\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t// Exceeding supported length, time to reduce & multiply\r\n\t\tif (e > 8) {\r\n\t\t\te = 8;\r\n\t\t}\r\n\r\n\t\tif (output === \"exponent\") {\r\n\t\t\treturn e;\r\n\t\t}\r\n\r\n\t\t// Zero is now a special case because bytes divide by 1\r\n\t\tif (num === 0) {\r\n\t\t\tresult[0] = 0;\r\n\t\t\tresult[1] = unix ? \"\" : symbol[standard][bits ? \"bits\" : \"bytes\"][e];\r\n\t\t} else {\r\n\t\t\tval = num / (base === 2 ? Math.pow(2, e * 10) : Math.pow(1000, e));\r\n\r\n\t\t\tif (bits) {\r\n\t\t\t\tval = val * 8;\r\n\r\n\t\t\t\tif (val >= ceil && e < 8) {\r\n\t\t\t\t\tval = val / ceil;\r\n\t\t\t\t\te++;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\r\n\t\t\tresult[0] = Number(val.toFixed(e > 0 ? round : 0));\r\n\r\n\t\t\tif (result[0] === ceil && e < 8 && descriptor.exponent === void 0) {\r\n\t\t\t\tresult[0] = 1;\r\n\t\t\t\te++;\r\n\t\t\t}\r\n\r\n\t\t\tresult[1] = base === 10 && e === 1 ? bits ? \"kb\" : \"kB\" : symbol[standard][bits ? \"bits\" : \"bytes\"][e];\r\n\r\n\t\t\tif (unix) {\r\n\t\t\t\tresult[1] = standard === \"jedec\" ? result[1].charAt(0) : e > 0 ? result[1].replace(/B$/, \"\") : result[1];\r\n\r\n\t\t\t\tif (b.test(result[1])) {\r\n\t\t\t\t\tresult[0] = Math.floor(result[0]);\r\n\t\t\t\t\tresult[1] = \"\";\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t// Decorating a 'diff'\r\n\t\tif (neg) {\r\n\t\t\tresult[0] = -result[0];\r\n\t\t}\r\n\r\n\t\t// Applying custom symbol\r\n\t\tresult[1] = symbols[result[1]] || result[1];\r\n\r\n\t\tif (locale === true) {\r\n\t\t\tresult[0] = result[0].toLocaleString();\r\n\t\t} else if (locale.length > 0) {\r\n\t\t\tresult[0] = result[0].toLocaleString(locale, localeOptions);\r\n\t\t} else if (separator.length > 0) {\r\n\t\t\tresult[0] = result[0].toString().replace(\".\", separator);\r\n\t\t}\r\n\r\n\t\t// Returning Array, Object, or String (default)\r\n\t\tif (output === \"array\") {\r\n\t\t\treturn result;\r\n\t\t}\r\n\r\n\t\tif (full) {\r\n\t\t\tresult[1] = fullforms[e] ? fullforms[e] : fullform[standard][e] + (bits ? \"bit\" : \"byte\") + (result[0] === 1 ? \"\" : \"s\");\r\n\t\t}\r\n\r\n\t\tif (output === \"object\") {\r\n\t\t\treturn {value: result[0], symbol: result[1], exponent: e};\r\n\t\t}\r\n\r\n\t\treturn result.join(spacer);\r\n\t}\r\n\r\n\t// Partial application for functional programming\r\n\tfilesize.partial = opt => arg => filesize(arg, opt);\r\n\r\n\t// CommonJS, AMD, script tag\r\n\tif (typeof exports !== \"undefined\") {\r\n\t\tmodule.exports = filesize;\r\n\t} else if (typeof define === \"function\" && define.amd !== void 0) {\r\n\t\tdefine(() => filesize);\r\n\t} else {\r\n\t\tglobal.filesize = filesize;\r\n\t}\r\n}(typeof window !== \"undefined\" ? window : global));\r\n"]}
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