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

   1 /**
   2  * @fileoverview disallow use of the Buffer() constructor
   3  * @author Teddy Katz
   4  */
   5 "use strict";
   6
   7 //------------------------------------------------------------------------------
   8 // Rule Definition
   9 //------------------------------------------------------------------------------
  10
  11 module.exports = {
  12     meta: {
  13         deprecated: true,
  14
  15         replacedBy: [],
  16
  17         type: "problem",
  18
  19         docs: {
  20             description: "disallow use of the `Buffer()` constructor",
  21             category: "Node.js and CommonJS",
  22             recommended: false,
  23             url: "https://eslint.org/docs/rules/no-buffer-constructor"
  24         },
  25
  26         schema: [],
  27
  28         messages: {
  29             deprecated: "{{expr}} is deprecated. Use Buffer.from(), Buffer.alloc(), or Buffer.allocUnsafe() instead."
  30         }
  31     },
  32
  33     create(context) {
  34
  35         //----------------------------------------------------------------------
  36         // Public
  37         //----------------------------------------------------------------------
  38
  39         return {
  40             "CallExpression[callee.name='Buffer'], NewExpression[callee.name='Buffer']"(node) {
  41                 context.report({
  42                     node,
  43                     messageId: "deprecated",
  44                     data: { expr: node.type === "CallExpression" ? "Buffer()" : "new Buffer()" }
  45                 });
  46             }
  47         };
  48     }
  49 };