Server : Apache/2 System : Linux server-15-235-50-60 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14 20:25:16 UTC 2025 x86_64 User : gositeme ( 1004) PHP Version : 8.2.29 Disable Function : exec,system,passthru,shell_exec,proc_close,proc_open,dl,popen,show_source,posix_kill,posix_mkfifo,posix_getpwuid,posix_setpgid,posix_setsid,posix_setuid,posix_setgid,posix_seteuid,posix_setegid,posix_uname Directory :  /home/gositeme/domains/lavocat.quebec/private_html/node_modules/eslint/lib/rules/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

/**
 * @fileoverview Rule to flag duplicate arguments
 * @author Jamund Ferguson
 */

"use strict";

//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------

/** @type {import('../shared/types').Rule} */
module.exports = {
    meta: {
        type: "problem",

        docs: {
            description: "Disallow duplicate arguments in `function` definitions",
            recommended: true,
            url: "https://eslint.org/docs/latest/rules/no-dupe-args"
        },

        schema: [],

        messages: {
            unexpected: "Duplicate param '{{name}}'."
        }
    },

    create(context) {

        const sourceCode = context.sourceCode;

        //--------------------------------------------------------------------------
        // Helpers
        //--------------------------------------------------------------------------

        /**
         * Checks whether or not a given definition is a parameter's.
         * @param {eslint-scope.DefEntry} def A definition to check.
         * @returns {boolean} `true` if the definition is a parameter's.
         */
        function isParameter(def) {
            return def.type === "Parameter";
        }

        /**
         * Determines if a given node has duplicate parameters.
         * @param {ASTNode} node The node to check.
         * @returns {void}
         * @private
         */
        function checkParams(node) {
            const variables = sourceCode.getDeclaredVariables(node);

            for (let i = 0; i < variables.length; ++i) {
                const variable = variables[i];

                // Checks and reports duplications.
                const defs = variable.defs.filter(isParameter);

                if (defs.length >= 2) {
                    context.report({
                        node,
                        messageId: "unexpected",
                        data: { name: variable.name }
                    });
                }
            }
        }

        //--------------------------------------------------------------------------
        // Public API
        //--------------------------------------------------------------------------

        return {
            FunctionDeclaration: checkParams,
            FunctionExpression: checkParams
        };

    }
};