Avoid writing messages implicitly

This fixes #1140 [1].

[1] #1140

CHANGELOG.md

@@ -14,6 +14,8 @@ Breaking changes:
 
   - This is now easily determined by using other properties, as reflected in the docs.
 
+- Messages reports are no longer implicitly enabled and written to disk when enabling JSON or HTML reports, fixes [#1140](https://github.com/badeball/cypress-cucumber-preprocessor/issues/1140).
+
 Other changes:
 
 - Emit meta information (lib version, node version, os, ci) in meesage reports, fixes [#1133](https://github.com/badeball/cypress-cucumber-preprocessor/issues/1133).

features/issues/1140.feature

@@ -0,0 +1,27 @@
+# https://github.com/badeball/cypress-cucumber-preprocessor/issues/1140
+
+Feature: no imlicit report
+  Scenario: JSON enabled
+    Given additional preprocessor configuration
+      """
+      {
+        "json": {
+          "enabled": true
+        }
+      }
+      """
+    And a file named "cypress/e2e/a.feature" with:
+      """
+      Feature: a feature
+        Scenario: a scenario
+          Given a step
+      """
+    And a file named "cypress/support/step_definitions/steps.js" with:
+      """
+      const { Given } = require("@badeball/cypress-cucumber-preprocessor");
+      Given("a step", function() {})
+      """
+    When I run cypress
+    Then it passes
+    And there should be a JSON output similar to "fixtures/passed-example.json"
+    And there should be no messages report

features/step_definitions/messages_steps.ts

@@ -61,6 +61,16 @@ Then(
   }
 );
 
+Then("there should be no messages report", async function (this: ICustomWorld) {
+  await assert.rejects(
+    () => fs.readFile(path.join(this.tmpDir, "cucumber-messages.ndjson")),
+    {
+      code: "ENOENT",
+    },
+    "Expected there to be no messages report"
+  );
+});
+
 Then("there should be a messages report", async function (this: ICustomWorld) {
   await assert.doesNotReject(
     () => fs.access(path.join(this.tmpDir, "cucumber-messages.ndjson")),