eslint/lib/rules/no-path-concat.js

   1 /**
   2  * @fileoverview Disallow string concatenation when using __dirname and __filename
   3  * @author Nicholas C. Zakas
   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: "suggestion",
  20
  21         docs: {
  22             description: "Disallow string concatenation with `__dirname` and `__filename`",
  23             recommended: false,
  24             url: "https://eslint.org/docs/rules/no-path-concat"
  25         },
  26
  27         schema: [],
  28
  29         messages: {
  30             usePathFunctions: "Use path.join() or path.resolve() instead of + to create paths."
  31         }
  32     },
  33
  34     create(context) {
  35
  36         const MATCHER = /^__(?:dir|file)name$/u;
  37
  38         //--------------------------------------------------------------------------
  39         // Public
  40         //--------------------------------------------------------------------------
  41
  42         return {
  43
  44             BinaryExpression(node) {
  45
  46                 const left = node.left,
  47                     right = node.right;
  48
  49                 if (node.operator === "+" &&
  50                         ((left.type === "Identifier" && MATCHER.test(left.name)) ||
  51                         (right.type === "Identifier" && MATCHER.test(right.name)))
  52                 ) {
  53
  54                     context.report({
  55                         node,
  56                         messageId: "usePathFunctions"
  57                     });
  58                 }
  59             }
  60
  61         };
  62
  63     }
  64 };