From 36ddd2e0ea3f02025cc6c75bb393f2ccc5be05d7 Mon Sep 17 00:00:00 2001
From: Johann Schopplich <mail@johannschopplich.com>
Date: Fri, 21 Nov 2025 09:01:26 +0100
Subject: [PATCH] fix: encode mixed-format arrays at root level (fixes #202)

---
 packages/toon/package.json           |  2 +-
 packages/toon/src/encode/encoders.ts | 15 ++++++++++++---
 pnpm-lock.yaml                       | 10 +++++-----
 3 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/packages/toon/package.json b/packages/toon/package.json
index 58adf21..3bfa36e 100644
--- a/packages/toon/package.json
+++ b/packages/toon/package.json
@@ -38,6 +38,6 @@
     "test": "vitest"
   },
   "devDependencies": {
-    "@toon-format/spec": "^2.0.0"
+    "@toon-format/spec": "^2.0.1"
   }
 }
diff --git a/packages/toon/src/encode/encoders.ts b/packages/toon/src/encode/encoders.ts
index 28ffccc..2525f93 100644
--- a/packages/toon/src/encode/encoders.ts
+++ b/packages/toon/src/encode/encoders.ts
@@ -361,9 +361,18 @@ function* encodeListItemValueLines(
   if (isJsonPrimitive(value)) {
     yield indentedListItem(depth, encodePrimitive(value, options.delimiter), options.indent)
   }
-  else if (isJsonArray(value) && isArrayOfPrimitives(value)) {
-    const arrayLine = encodeInlineArrayLine(value, options.delimiter)
-    yield indentedListItem(depth, arrayLine, options.indent)
+  else if (isJsonArray(value)) {
+    if (isArrayOfPrimitives(value)) {
+      const arrayLine = encodeInlineArrayLine(value, options.delimiter)
+      yield indentedListItem(depth, arrayLine, options.indent)
+    }
+    else {
+      const header = formatHeader(value.length, { delimiter: options.delimiter })
+      yield indentedListItem(depth, header, options.indent)
+      for (const item of value) {
+        yield* encodeListItemValueLines(item, depth + 1, options)
+      }
+    }
   }
   else if (isJsonObject(value)) {
     yield* encodeObjectAsListItemLines(value, depth, options)
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e477031..4ff1db5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -114,8 +114,8 @@ importers:
   packages/toon:
     devDependencies:
       '@toon-format/spec':
-        specifier: ^2.0.0
-        version: 2.0.0
+        specifier: ^2.0.1
+        version: 2.0.1
 
 packages:
 
@@ -1149,8 +1149,8 @@ packages:
     peerDependencies:
       eslint: '>=9.0.0'
 
-  '@toon-format/spec@2.0.0':
-    resolution: {integrity: sha512-rNM1N74QcbUnI7quWL3RRhAPl/dFzw9RhPxGf8l2ICRvoY76w8wAp2ydE3mq8re1+cy4HAWr5wCRcNrlT8zzRQ==}
+  '@toon-format/spec@2.0.1':
+    resolution: {integrity: sha512-scuKWamwioJKOE+C9KfSBUdxTn92oeBJCW6U5HEUPh+AqJddhB+H2WLSiYWaTLJsiHoq+9oen7jqJwGxwxp7Ig==}
 
   '@tybys/wasm-util@0.10.1':
     resolution: {integrity: sha512-9tTaPJLSiejZKx+Bmog4uSubteqTvFrVrURwkmHixBo0G4seD0zUxp98E1DzUBJxLQ3NPwXrGKDiVjwx/DpPsg==}
@@ -4257,7 +4257,7 @@ snapshots:
       estraverse: 5.3.0
       picomatch: 4.0.3
 
-  '@toon-format/spec@2.0.0': {}
+  '@toon-format/spec@2.0.1': {}
 
   '@tybys/wasm-util@0.10.1':
     dependencies: