text: /**
   * @fileoverview Rule to check for implicit global variables and functions.
   * @author Joshua Peek
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = {
      meta: {
          docs: {
              description: "disallow variable and `function` declarations in the global scope",
              category: "Best Practices",
              recommended: false,
              url: "https://eslint.org/docs/rules/no-implicit-globals"
          },
  
          schema: []
      },
  
      create(context) {
          return {
              Program() {
                  const scope = context.getScope();
  
                  scope.variables.forEach(variable => {
                      if (variable.writeable) {
                          return;
                      }
  
                      variable.defs.forEach(def => {
                          if (def.type === "FunctionName" || (def.type === "Variable" && def.parent.kind === "var")) {
                              context.report({ node: def.node, message: "Implicit global variable, assign as global property instead." });
                          }
                      });
                  });
  
                  scope.implicit.variables.forEach(variable => {
                      const scopeVariable = scope.set.get(variable.name);
  
                      if (scopeVariable && scopeVariable.writeable) {
                          return;
                      }
  
                      variable.defs.forEach(def => {
                          context.report({ node: def.node, message: "Implicit global variable, assign as global property instead." });
                      });
                  });
              }
          };
  
      }
  };
  