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node_modules/eslint/lib/rules/no-multi-str.js 1.61 KB
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  /**
   * @fileoverview Rule to flag when using multiline strings
   * @author Ilya Volodin
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Requirements
  //------------------------------------------------------------------------------
  
  const astUtils = require("../ast-utils");
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = {
      meta: {
          docs: {
              description: "disallow multiline strings",
              category: "Best Practices",
              recommended: false,
              url: "https://eslint.org/docs/rules/no-multi-str"
          },
  
          schema: []
      },
  
      create(context) {
  
          /**
           * Determines if a given node is part of JSX syntax.
           * @param {ASTNode} node The node to check.
           * @returns {boolean} True if the node is a JSX node, false if not.
           * @private
           */
          function isJSXElement(node) {
              return node.type.indexOf("JSX") === 0;
          }
  
          //--------------------------------------------------------------------------
          // Public API
          //--------------------------------------------------------------------------
  
          return {
  
              Literal(node) {
                  if (astUtils.LINEBREAK_MATCHER.test(node.raw) && !isJSXElement(node.parent)) {
                      context.report({ node, message: "Multiline support is limited to browsers supporting ES5 only." });
                  }
              }
          };
  
      }
  };