.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-throw-literal.js

   1 /**
   2  * @fileoverview Rule to restrict what can be thrown as an exception.
   3  * @author Dieter Oberkofler
   4  */
   5
   6 "use strict";
   7
   8 const astUtils = require("./utils/ast-utils");
   9
  10 //------------------------------------------------------------------------------
  11 // Rule Definition
  12 //------------------------------------------------------------------------------
  13
  14 module.exports = {
  15     meta: {
  16         type: "suggestion",
  17
  18         docs: {
  19             description: "disallow throwing literals as exceptions",
  20             category: "Best Practices",
  21             recommended: false,
  22             url: "https://eslint.org/docs/rules/no-throw-literal"
  23         },
  24
  25         schema: [],
  26
  27         messages: {
  28             object: "Expected an error object to be thrown.",
  29             undef: "Do not throw undefined."
  30         }
  31     },
  32
  33     create(context) {
  34
  35         return {
  36
  37             ThrowStatement(node) {
  38                 if (!astUtils.couldBeError(node.argument)) {
  39                     context.report({ node, messageId: "object" });
  40                 } else if (node.argument.type === "Identifier") {
  41                     if (node.argument.name === "undefined") {
  42                         context.report({ node, messageId: "undef" });
  43                     }
  44                 }
  45
  46             }
  47
  48         };
  49
  50     }
  51 };