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

   1 /**
   2  * @fileoverview disallow use of the Buffer() constructor
   3  * @author Teddy Katz
   4  * @deprecated in ESLint v7.0.0
   5  */
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Rule Definition
  10 //------------------------------------------------------------------------------
  11
  12 /** @type {import('../shared/types').Rule} */
  13 module.exports = {
  14     meta: {
  15         deprecated: true,
  16
  17         replacedBy: [],
  18
  19         type: "problem",
  20
  21         docs: {
  22             description: "Disallow use of the `Buffer()` constructor",
  23             recommended: false,
  24             url: "https://eslint.org/docs/latest/rules/no-buffer-constructor"
  25         },
  26
  27         schema: [],
  28
  29         messages: {
  30             deprecated: "{{expr}} is deprecated. Use Buffer.from(), Buffer.alloc(), or Buffer.allocUnsafe() instead."
  31         }
  32     },
  33
  34     create(context) {
  35
  36         //----------------------------------------------------------------------
  37         // Public
  38         //----------------------------------------------------------------------
  39
  40         return {
  41             "CallExpression[callee.name='Buffer'], NewExpression[callee.name='Buffer']"(node) {
  42                 context.report({
  43                     node,
  44                     messageId: "deprecated",
  45                     data: { expr: node.type === "CallExpression" ? "Buffer()" : "new Buffer()" }
  46                 });
  47             }
  48         };
  49     }
  50 };