fix(eslint-plugin): [member-delimiter-style] autofixer result is not as expected with option delimiter: 'none'

packages/eslint-plugin/src/rules/member-delimiter-style.ts

@@ -68,8 +68,8 @@ const definition = {
   additionalProperties: false,
 };
 
-const isLastTokenEndOfLine = (token: string, line: string): boolean => {
-  const positionInLine = line.indexOf(token);
+const isLastTokenEndOfLine = (token: LastTokenType, line: string): boolean => {
+  const positionInLine = token.loc.start.column;
 
   return positionInLine === line.length - 1;
 };
@@ -85,7 +85,7 @@ const makeFixFunction = ({
   // if removing is the action but last token is not the end of the line
   if (
     optsNone &&
-    !isLastTokenEndOfLine(lastToken.value, lastTokenLine) &&
+    !isLastTokenEndOfLine(lastToken, lastTokenLine) &&
     !isSingleLine
   ) {
     return null;

packages/eslint-plugin/tests/rules/member-delimiter-style.test.ts

@@ -3548,5 +3548,43 @@ type Foo = {a: {
         },
       ],
     },
+    {
+      code: `
+type Foo = {
+  a: {
+    b: true;
+  }; c: false;
+}
+      `,
+      output: `
+type Foo = {
+  a: {
+    b: true
+  }; c: false
+}
+      `,
+      options: [
+        {
+          multiline: { delimiter: 'none' },
+        },
+      ],
+      errors: [
+        {
+          messageId: 'unexpectedSemi',
+          line: 4,
+          column: 13,
+        },
+        {
+          messageId: 'unexpectedSemi',
+          line: 5,
+          column: 5,
+        },
+        {
+          messageId: 'unexpectedSemi',
+          line: 5,
+          column: 15,
+        },
+      ],
+    },
   ],
 });