knowledgebase_law/node_modules/eslint/lib/rules/no-buffer-constructor.js

/**
 * @fileoverview disallow use of the Buffer() constructor
 * @author Teddy Katz
 * @deprecated in ESLint v7.0.0
 */
"use strict";

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

/** @type {import('../shared/types').Rule} */
module.exports = {
    meta: {
        deprecated: {
            message: "Node.js rules were moved out of ESLint core.",
            url: "https://eslint.org/docs/latest/use/migrating-to-7.0.0#deprecate-node-rules",
            deprecatedSince: "7.0.0",
            availableUntil: null,
            replacedBy: [
                {
                    message: "eslint-plugin-n now maintains deprecated Node.js-related rules.",
                    plugin: {
                        name: "eslint-plugin-n",
                        url: "https://github.com/eslint-community/eslint-plugin-n"
                    },
                    rule: {
                        name: "no-deprecated-api",
                        url: "https://github.com/eslint-community/eslint-plugin-n/tree/master/docs/rules/no-deprecated-api.md"
                    }
                }
            ]
        },

        type: "problem",

        docs: {
            description: "Disallow use of the `Buffer()` constructor",
            recommended: false,
            url: "https://eslint.org/docs/latest/rules/no-buffer-constructor"
        },

        schema: [],

        messages: {
            deprecated: "{{expr}} is deprecated. Use Buffer.from(), Buffer.alloc(), or Buffer.allocUnsafe() instead."
        }
    },

    create(context) {

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

        return {
            "CallExpression[callee.name='Buffer'], NewExpression[callee.name='Buffer']"(node) {
                context.report({
                    node,
                    messageId: "deprecated",
                    data: { expr: node.type === "CallExpression" ? "Buffer()" : "new Buffer()" }
                });
            }
        };
    }
};