Formatter: Fix formatting <% else %> in inline mode

javascript/packages/formatter/src/format-printer.ts

@@ -1245,7 +1245,7 @@ export class FormatPrinter extends Printer {
         this.lines.push(" ")
       }
 
-      if (node.subsequent) this.visit(node.end_node)
+      if (node.subsequent) this.visit(node.subsequent)
       if (node.end_node) this.visit(node.end_node)
     } else {
       this.printERBNode(node)
@@ -1260,8 +1260,13 @@ export class FormatPrinter extends Printer {
   }
 
   visitERBElseNode(node: ERBElseNode) {
-    this.printERBNode(node)
-    this.withIndent(() => node.statements.forEach(statement => this.visit(statement)))
+    if (this.inlineMode) {
+      this.printERBNode(node)
+      node.statements.forEach(statement => this.visit(statement))
+    } else {
+      this.printERBNode(node)
+      this.withIndent(() => node.statements.forEach(statement => this.visit(statement)))
+    }
   }
 
   visitERBWhenNode(node: ERBWhenNode) {

javascript/packages/formatter/test/erb/if.test.ts

@@ -254,5 +254,64 @@ describe("@herb-tools/formatter", () => {
       const output = formatter.format(input)
       expect(output).toEqual(expected)
     })
+
+    test("if inside <span>", () => {
+      const input = dedent`
+        <span>
+          <% if valid? %>
+            Valid
+          <% else %>
+            Invalid
+          <% end %>
+        </span>
+      `
+
+      const expected = dedent`
+        <span><% if valid? %>Valid<% else %>Invalid<% end %></span>
+      `
+
+      const output = formatter.format(input)
+      expect(output).toEqual(expected)
+    })
+
+    test("if/elseif inside <span>", () => {
+      const input = dedent`
+        <span>
+          <% if valid? %>
+            Valid
+          <% elsif invalid? %>
+            Invalid
+          <% end %>
+        </span>
+      `
+
+      const expected = dedent`
+        <span><% if valid? %>Valid<% elsif invalid? %>Invalid<% end %></span>
+      `
+
+      const output = formatter.format(input)
+      expect(output).toEqual(expected)
+    })
+
+    test("if/elseif/else inside <span>", () => {
+      const input = dedent`
+        <span>
+          <% if valid? %>
+            Valid
+          <% elsif invalid? %>
+            Invalid
+          <% else %>
+            Unknown
+          <% end %>
+        </span>
+      `
+
+      const expected = dedent`
+        <span><% if valid? %>Valid<% elsif invalid? %>Invalid<% else %>Unknown<% end %></span>
+      `
+
+      const output = formatter.format(input)
+      expect(output).toEqual(expected)
+    })
   })
 })