fix: autonumber bug

src/diagrams/sequence/sequenceDb.js

@@ -139,6 +139,7 @@ export const autoWrap = () => wrapEnabled;
 export const clear = function () {
   actors = {};
   messages = [];
+  sequenceNumbersEnabled = false;
 };
 
 export const parseMessage = function (str) {

src/diagrams/sequence/sequenceDiagram.spec.js

@@ -1619,4 +1619,24 @@ participant Alice
       models.lastActor().y + models.lastActor().height + mermaid.sequence.boxMargin
     );
   });
+  it('it should hide sequence numbers when autonumber is removed when autonumber is enabled', function () {
+    const str1 = `
+sequenceDiagram
+autonumber
+Alice->Bob:Hello Bob, how are you?
+Note right of Bob: Bob thinks
+Bob-->Alice: I am good thanks!`;
+
+    mermaidAPI.parse(str1);
+    expect(parser.yy.showSequenceNumbers()).toBe(true);
+
+    const str2 = `
+sequenceDiagram
+Alice->Bob:Hello Bob, how are you?
+Note right of Bob: Bob thinks
+Bob-->Alice: I am good thanks!`;
+
+    mermaidAPI.parse(str2);
+    expect(parser.yy.showSequenceNumbers()).toBe(false);
+  });
 });

src/mermaidAPI.js

@@ -94,6 +94,7 @@ function parse(text) {
       parser.parser.yy = flowDb;
       break;
     case 'sequence':
+      sequenceDb.clear();
       parser = sequenceParser;
       parser.parser.yy = sequenceDb;
       break;