Website Structure

Frontend-Learner/node_modules/pretty-bytes/index.js

@@ -0,0 +1,178 @@
+const BYTE_UNITS = [
+	'B',
+	'kB',
+	'MB',
+	'GB',
+	'TB',
+	'PB',
+	'EB',
+	'ZB',
+	'YB',
+];
+
+const BIBYTE_UNITS = [
+	'B',
+	'KiB',
+	'MiB',
+	'GiB',
+	'TiB',
+	'PiB',
+	'EiB',
+	'ZiB',
+	'YiB',
+];
+
+const BIT_UNITS = [
+	'b',
+	'kbit',
+	'Mbit',
+	'Gbit',
+	'Tbit',
+	'Pbit',
+	'Ebit',
+	'Zbit',
+	'Ybit',
+];
+
+const BIBIT_UNITS = [
+	'b',
+	'kibit',
+	'Mibit',
+	'Gibit',
+	'Tibit',
+	'Pibit',
+	'Eibit',
+	'Zibit',
+	'Yibit',
+];
+
+/*
+Formats the given number using `Number#toLocaleString`.
+- If locale is a string, the value is expected to be a locale-key (for example: `de`).
+- If locale is true, the system default locale is used for translation.
+- If no value for locale is specified, the number is returned unmodified.
+*/
+const toLocaleString = (number, locale, options) => {
+	let result = number;
+	if (typeof locale === 'string' || Array.isArray(locale)) {
+		result = number.toLocaleString(locale, options);
+	} else if (locale === true || options !== undefined) {
+		result = number.toLocaleString(undefined, options);
+	}
+
+	return result;
+};
+
+const log10 = numberOrBigInt => {
+	if (typeof numberOrBigInt === 'number') {
+		return Math.log10(numberOrBigInt);
+	}
+
+	const string = numberOrBigInt.toString(10);
+
+	return string.length + Math.log10(`0.${string.slice(0, 15)}`);
+};
+
+const log = numberOrBigInt => {
+	if (typeof numberOrBigInt === 'number') {
+		return Math.log(numberOrBigInt);
+	}
+
+	return log10(numberOrBigInt) * Math.log(10);
+};
+
+const divide = (numberOrBigInt, divisor) => {
+	if (typeof numberOrBigInt === 'number') {
+		return numberOrBigInt / divisor;
+	}
+
+	const integerPart = numberOrBigInt / BigInt(divisor);
+	const remainder = numberOrBigInt % BigInt(divisor);
+	return Number(integerPart) + (Number(remainder) / divisor);
+};
+
+const applyFixedWidth = (result, fixedWidth) => {
+	if (fixedWidth === undefined) {
+		return result;
+	}
+
+	if (typeof fixedWidth !== 'number' || !Number.isSafeInteger(fixedWidth) || fixedWidth < 0) {
+		throw new TypeError(`Expected fixedWidth to be a non-negative integer, got ${typeof fixedWidth}: ${fixedWidth}`);
+	}
+
+	if (fixedWidth === 0) {
+		return result;
+	}
+
+	return result.length < fixedWidth ? result.padStart(fixedWidth, ' ') : result;
+};
+
+const buildLocaleOptions = options => {
+	const {minimumFractionDigits, maximumFractionDigits} = options;
+
+	if (minimumFractionDigits === undefined && maximumFractionDigits === undefined) {
+		return undefined;
+	}
+
+	return {
+		...(minimumFractionDigits !== undefined && {minimumFractionDigits}),
+		...(maximumFractionDigits !== undefined && {maximumFractionDigits}),
+		roundingMode: 'trunc',
+	};
+};
+
+export default function prettyBytes(number, options) {
+	if (typeof number !== 'bigint' && !Number.isFinite(number)) {
+		throw new TypeError(`Expected a finite number, got ${typeof number}: ${number}`);
+	}
+
+	options = {
+		bits: false,
+		binary: false,
+		space: true,
+		nonBreakingSpace: false,
+		...options,
+	};
+
+	const UNITS = options.bits
+		? (options.binary ? BIBIT_UNITS : BIT_UNITS)
+		: (options.binary ? BIBYTE_UNITS : BYTE_UNITS);
+
+	const separator = options.space ? (options.nonBreakingSpace ? '\u00A0' : ' ') : '';
+
+	// Handle signed zero case
+	const isZero = typeof number === 'number' ? number === 0 : number === 0n;
+	if (options.signed && isZero) {
+		const result = ` 0${separator}${UNITS[0]}`;
+		return applyFixedWidth(result, options.fixedWidth);
+	}
+
+	const isNegative = number < 0;
+	const prefix = isNegative ? '-' : (options.signed ? '+' : '');
+
+	if (isNegative) {
+		number = -number;
+	}
+
+	const localeOptions = buildLocaleOptions(options);
+	let result;
+
+	if (number < 1) {
+		const numberString = toLocaleString(number, options.locale, localeOptions);
+		result = prefix + numberString + separator + UNITS[0];
+	} else {
+		const exponent = Math.min(Math.floor(options.binary ? log(number) / Math.log(1024) : log10(number) / 3), UNITS.length - 1);
+		number = divide(number, (options.binary ? 1024 : 1000) ** exponent);
+
+		if (!localeOptions) {
+			const minPrecision = Math.max(3, Math.floor(number).toString().length);
+			number = number.toPrecision(minPrecision);
+		}
+
+		const numberString = toLocaleString(Number(number), options.locale, localeOptions);
+		const unit = UNITS[exponent];
+		result = prefix + numberString + separator + unit;
+	}
+
+	return applyFixedWidth(result, options.fixedWidth);
+}