Add components

slider/node_modules/eslint/lib/rules/one-var-declaration-per-line.js

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+/**
+ * @fileoverview Rule to check multiple var declarations per line
+ * @author Alberto Rodríguez
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		deprecated: {
+			message: "Formatting rules are being moved out of ESLint core.",
+			url: "https://eslint.org/blog/2023/10/deprecating-formatting-rules/",
+			deprecatedSince: "8.53.0",
+			availableUntil: "10.0.0",
+			replacedBy: [
+				{
+					message:
+						"ESLint Stylistic now maintains deprecated stylistic core rules.",
+					url: "https://eslint.style/guide/migration",
+					plugin: {
+						name: "@stylistic/eslint-plugin",
+						url: "https://eslint.style",
+					},
+					rule: {
+						name: "one-var-declaration-per-line",
+						url: "https://eslint.style/rules/one-var-declaration-per-line",
+					},
+				},
+			],
+		},
+		type: "suggestion",
+
+		docs: {
+			description:
+				"Require or disallow newlines around variable declarations",
+			recommended: false,
+			url: "https://eslint.org/docs/latest/rules/one-var-declaration-per-line",
+		},
+
+		schema: [
+			{
+				enum: ["always", "initializations"],
+			},
+		],
+
+		fixable: "whitespace",
+
+		messages: {
+			expectVarOnNewline:
+				"Expected variable declaration to be on a new line.",
+		},
+	},
+
+	create(context) {
+		const always = context.options[0] === "always";
+
+		//--------------------------------------------------------------------------
+		// Helpers
+		//--------------------------------------------------------------------------
+
+		/**
+		 * Determine if provided keyword is a variant of for specifiers
+		 * @private
+		 * @param {string} keyword keyword to test
+		 * @returns {boolean} True if `keyword` is a variant of for specifier
+		 */
+		function isForTypeSpecifier(keyword) {
+			return (
+				keyword === "ForStatement" ||
+				keyword === "ForInStatement" ||
+				keyword === "ForOfStatement"
+			);
+		}
+
+		/**
+		 * Checks newlines around variable declarations.
+		 * @private
+		 * @param {ASTNode} node `VariableDeclaration` node to test
+		 * @returns {void}
+		 */
+		function checkForNewLine(node) {
+			if (isForTypeSpecifier(node.parent.type)) {
+				return;
+			}
+
+			const declarations = node.declarations;
+			let prev;
+
+			declarations.forEach(current => {
+				if (prev && prev.loc.end.line === current.loc.start.line) {
+					if (always || prev.init || current.init) {
+						context.report({
+							node,
+							messageId: "expectVarOnNewline",
+							loc: current.loc,
+							fix: fixer => fixer.insertTextBefore(current, "\n"),
+						});
+					}
+				}
+				prev = current;
+			});
+		}
+
+		//--------------------------------------------------------------------------
+		// Public
+		//--------------------------------------------------------------------------
+
+		return {
+			VariableDeclaration: checkForNewLine,
+		};
+	},
+};