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Current File : /var/www/vhosts/pcu.in.th/api-uat.pcu.in.th/node_modules/eslint/lib/rules//func-name-matching.js
/**
 * @fileoverview Rule to require function names to match the name of the variable or property to which they are assigned.
 * @author Annie Zhang, Pavel Strashkin
 */

"use strict";

//--------------------------------------------------------------------------
// Requirements
//--------------------------------------------------------------------------

const astUtils = require("./utils/ast-utils");
const esutils = require("esutils");

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

/**
 * Determines if a pattern is `module.exports` or `module["exports"]`
 * @param {ASTNode} pattern The left side of the AssignmentExpression
 * @returns {boolean} True if the pattern is `module.exports` or `module["exports"]`
 */
function isModuleExports(pattern) {
    if (pattern.type === "MemberExpression" && pattern.object.type === "Identifier" && pattern.object.name === "module") {

        // module.exports
        if (pattern.property.type === "Identifier" && pattern.property.name === "exports") {
            return true;
        }

        // module["exports"]
        if (pattern.property.type === "Literal" && pattern.property.value === "exports") {
            return true;
        }
    }
    return false;
}

/**
 * Determines if a string name is a valid identifier
 * @param {string} name The string to be checked
 * @param {int} ecmaVersion The ECMAScript version if specified in the parserOptions config
 * @returns {boolean} True if the string is a valid identifier
 */
function isIdentifier(name, ecmaVersion) {
    if (ecmaVersion >= 2015) {
        return esutils.keyword.isIdentifierES6(name);
    }
    return esutils.keyword.isIdentifierES5(name);
}

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

const alwaysOrNever = { enum: ["always", "never"] };
const optionsObject = {
    type: "object",
    properties: {
        considerPropertyDescriptor: {
            type: "boolean"
        },
        includeCommonJSModuleExports: {
            type: "boolean"
        }
    },
    additionalProperties: false
};

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

        docs: {
            description: "Require function names to match the name of the variable or property to which they are assigned",
            recommended: false,
            url: "https://eslint.org/docs/latest/rules/func-name-matching"
        },

        schema: {
            anyOf: [{
                type: "array",
                additionalItems: false,
                items: [alwaysOrNever, optionsObject]
            }, {
                type: "array",
                additionalItems: false,
                items: [optionsObject]
            }]
        },

        messages: {
            matchProperty: "Function name `{{funcName}}` should match property name `{{name}}`.",
            matchVariable: "Function name `{{funcName}}` should match variable name `{{name}}`.",
            notMatchProperty: "Function name `{{funcName}}` should not match property name `{{name}}`.",
            notMatchVariable: "Function name `{{funcName}}` should not match variable name `{{name}}`."
        }
    },

    create(context) {
        const options = (typeof context.options[0] === "object" ? context.options[0] : context.options[1]) || {};
        const nameMatches = typeof context.options[0] === "string" ? context.options[0] : "always";
        const considerPropertyDescriptor = options.considerPropertyDescriptor;
        const includeModuleExports = options.includeCommonJSModuleExports;
        const ecmaVersion = context.languageOptions.ecmaVersion;

        /**
         * Check whether node is a certain CallExpression.
         * @param {string} objName object name
         * @param {string} funcName function name
         * @param {ASTNode} node The node to check
         * @returns {boolean} `true` if node matches CallExpression
         */
        function isPropertyCall(objName, funcName, node) {
            if (!node) {
                return false;
            }
            return node.type === "CallExpression" && astUtils.isSpecificMemberAccess(node.callee, objName, funcName);
        }

        /**
         * Compares identifiers based on the nameMatches option
         * @param {string} x the first identifier
         * @param {string} y the second identifier
         * @returns {boolean} whether the two identifiers should warn.
         */
        function shouldWarn(x, y) {
            return (nameMatches === "always" && x !== y) || (nameMatches === "never" && x === y);
        }

        /**
         * Reports
         * @param {ASTNode} node The node to report
         * @param {string} name The variable or property name
         * @param {string} funcName The function name
         * @param {boolean} isProp True if the reported node is a property assignment
         * @returns {void}
         */
        function report(node, name, funcName, isProp) {
            let messageId;

            if (nameMatches === "always" && isProp) {
                messageId = "matchProperty";
            } else if (nameMatches === "always") {
                messageId = "matchVariable";
            } else if (isProp) {
                messageId = "notMatchProperty";
            } else {
                messageId = "notMatchVariable";
            }
            context.report({
                node,
                messageId,
                data: {
                    name,
                    funcName
                }
            });
        }

        /**
         * Determines whether a given node is a string literal
         * @param {ASTNode} node The node to check
         * @returns {boolean} `true` if the node is a string literal
         */
        function isStringLiteral(node) {
            return node.type === "Literal" && typeof node.value === "string";
        }

        //--------------------------------------------------------------------------
        // Public
        //--------------------------------------------------------------------------

        return {
            VariableDeclarator(node) {
                if (!node.init || node.init.type !== "FunctionExpression" || node.id.type !== "Identifier") {
                    return;
                }
                if (node.init.id && shouldWarn(node.id.name, node.init.id.name)) {
                    report(node, node.id.name, node.init.id.name, false);
                }
            },

            AssignmentExpression(node) {
                if (
                    node.right.type !== "FunctionExpression" ||
                    (node.left.computed && node.left.property.type !== "Literal") ||
                    (!includeModuleExports && isModuleExports(node.left)) ||
                    (node.left.type !== "Identifier" && node.left.type !== "MemberExpression")
                ) {
                    return;
                }

                const isProp = node.left.type === "MemberExpression";
                const name = isProp ? astUtils.getStaticPropertyName(node.left) : node.left.name;

                if (node.right.id && name && isIdentifier(name) && shouldWarn(name, node.right.id.name)) {
                    report(node, name, node.right.id.name, isProp);
                }
            },

            "Property, PropertyDefinition[value]"(node) {
                if (!(node.value.type === "FunctionExpression" && node.value.id)) {
                    return;
                }

                if (node.key.type === "Identifier" && !node.computed) {
                    const functionName = node.value.id.name;
                    let propertyName = node.key.name;

                    if (
                        considerPropertyDescriptor &&
                        propertyName === "value" &&
                        node.parent.type === "ObjectExpression"
                    ) {
                        if (isPropertyCall("Object", "defineProperty", node.parent.parent) || isPropertyCall("Reflect", "defineProperty", node.parent.parent)) {
                            const property = node.parent.parent.arguments[1];

                            if (isStringLiteral(property) && shouldWarn(property.value, functionName)) {
                                report(node, property.value, functionName, true);
                            }
                        } else if (isPropertyCall("Object", "defineProperties", node.parent.parent.parent.parent)) {
                            propertyName = node.parent.parent.key.name;
                            if (!node.parent.parent.computed && shouldWarn(propertyName, functionName)) {
                                report(node, propertyName, functionName, true);
                            }
                        } else if (isPropertyCall("Object", "create", node.parent.parent.parent.parent)) {
                            propertyName = node.parent.parent.key.name;
                            if (!node.parent.parent.computed && shouldWarn(propertyName, functionName)) {
                                report(node, propertyName, functionName, true);
                            }
                        } else if (shouldWarn(propertyName, functionName)) {
                            report(node, propertyName, functionName, true);
                        }
                    } else if (shouldWarn(propertyName, functionName)) {
                        report(node, propertyName, functionName, true);
                    }
                    return;
                }

                if (
                    isStringLiteral(node.key) &&
                    isIdentifier(node.key.value, ecmaVersion) &&
                    shouldWarn(node.key.value, node.value.id.name)
                ) {
                    report(node, node.key.value, node.value.id.name, true);
                }
            }
        };
    }
};

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