.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-multi-assign.js

   1 /**
   2  * @fileoverview Rule to check use of chained assignment expressions
   3  * @author Stewart Rand
   4  */
   5
   6 "use strict";
   7
   8
   9 //------------------------------------------------------------------------------
  10 // Rule Definition
  11 //------------------------------------------------------------------------------
  12
  13 module.exports = {
  14     meta: {
  15         type: "suggestion",
  16
  17         docs: {
  18             description: "disallow use of chained assignment expressions",
  19             category: "Stylistic Issues",
  20             recommended: false,
  21             url: "https://eslint.org/docs/rules/no-multi-assign"
  22         },
  23
  24         schema: [{
  25             type: "object",
  26             properties: {
  27                 ignoreNonDeclaration: {
  28                     type: "boolean",
  29                     default: false
  30                 }
  31             },
  32             additionalProperties: false
  33         }],
  34
  35         messages: {
  36             unexpectedChain: "Unexpected chained assignment."
  37         }
  38     },
  39
  40     create(context) {
  41
  42         //--------------------------------------------------------------------------
  43         // Public
  44         //--------------------------------------------------------------------------
  45         const options = context.options[0] || {
  46             ignoreNonDeclaration: false
  47         };
  48         const targetParent = options.ignoreNonDeclaration ? ["VariableDeclarator"] : ["AssignmentExpression", "VariableDeclarator"];
  49
  50         return {
  51             AssignmentExpression(node) {
  52                 if (targetParent.indexOf(node.parent.type) !== -1) {
  53                     context.report({
  54                         node,
  55                         messageId: "unexpectedChain"
  56                     });
  57                 }
  58             }
  59         };
  60
  61     }
  62 };