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app_vue/node_modules/webpack/lib/logging/truncateArgs.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/**
+ * @param {Array<number>} array array of numbers
+ * @returns {number} sum of all numbers in array
+ */
+const arraySum = array => {
+	let sum = 0;
+	for (const item of array) sum += item;
+	return sum;
+};
+
+/**
+ * @param {EXPECTED_ANY[]} args items to be truncated
+ * @param {number} maxLength maximum length of args including spaces between
+ * @returns {string[]} truncated args
+ */
+const truncateArgs = (args, maxLength) => {
+	const lengths = args.map(a => `${a}`.length);
+	const availableLength = maxLength - lengths.length + 1;
+
+	if (availableLength > 0 && args.length === 1) {
+		if (availableLength >= args[0].length) {
+			return args;
+		} else if (availableLength > 3) {
+			return [`...${args[0].slice(-availableLength + 3)}`];
+		}
+		return [args[0].slice(-availableLength)];
+	}
+
+	// Check if there is space for at least 4 chars per arg
+	if (availableLength < arraySum(lengths.map(i => Math.min(i, 6)))) {
+		// remove args
+		if (args.length > 1) return truncateArgs(args.slice(0, -1), maxLength);
+		return [];
+	}
+
+	let currentLength = arraySum(lengths);
+
+	// Check if all fits into maxLength
+	if (currentLength <= availableLength) return args;
+
+	// Try to remove chars from the longest items until it fits
+	while (currentLength > availableLength) {
+		const maxLength = Math.max(...lengths);
+		const shorterItems = lengths.filter(l => l !== maxLength);
+		const nextToMaxLength =
+			shorterItems.length > 0 ? Math.max(...shorterItems) : 0;
+		const maxReduce = maxLength - nextToMaxLength;
+		let maxItems = lengths.length - shorterItems.length;
+		let overrun = currentLength - availableLength;
+		for (let i = 0; i < lengths.length; i++) {
+			if (lengths[i] === maxLength) {
+				const reduce = Math.min(Math.floor(overrun / maxItems), maxReduce);
+				lengths[i] -= reduce;
+				currentLength -= reduce;
+				overrun -= reduce;
+				maxItems--;
+			}
+		}
+	}
+
+	// Return args reduced to length in lengths
+	return args.map((a, i) => {
+		const str = `${a}`;
+		const length = lengths[i];
+		if (str.length === length) {
+			return str;
+		} else if (length > 5) {
+			return `...${str.slice(-length + 3)}`;
+		} else if (length > 0) {
+			return str.slice(-length);
+		}
+		return "";
+	});
+};
+
+module.exports = truncateArgs;