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node_modules/eslint/lib/rules/no-throw-literal.js 1.13 KB
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  /**
   * @fileoverview Rule to restrict what can be thrown as an exception.
   * @author Dieter Oberkofler
   */
  
  "use strict";
  
  const astUtils = require("../ast-utils");
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = {
      meta: {
          docs: {
              description: "disallow throwing literals as exceptions",
              category: "Best Practices",
              recommended: false,
              url: "https://eslint.org/docs/rules/no-throw-literal"
          },
  
          schema: []
      },
  
      create(context) {
  
          return {
  
              ThrowStatement(node) {
                  if (!astUtils.couldBeError(node.argument)) {
                      context.report({ node, message: "Expected an object to be thrown." });
                  } else if (node.argument.type === "Identifier") {
                      if (node.argument.name === "undefined") {
                          context.report({ node, message: "Do not throw undefined." });
                      }
                  }
  
              }
  
          };
  
      }
  };