Print declare and export keywords for nested namespace

changelog_unreleased/typescript/15249.md

@@ -0,0 +1,16 @@
+#### Print `declare` and `export` keywords for nested namespace (#15249 by @sosukesuzuki)
+
+<!-- prettier-ignore -->
+```tsx
+// Input
+declare namespace abc1.def {}
+export namespace abc2.def {}
+
+// Prettier stable
+namespace abc1.def {}
+namespace abc2.def {}
+
+// Prettier main
+declare namespace abc1.def {}
+export namespace abc2.def {}
+```

package.json

@@ -38,8 +38,8 @@
     "@iarna/toml": "2.2.5",
     "@prettier/is-es5-identifier-name": "0.2.0",
     "@prettier/parse-srcset": "3.1.0",
-    "@typescript-eslint/typescript-estree": "6.3.0",
-    "@typescript-eslint/visitor-keys": "6.3.0",
+    "@typescript-eslint/typescript-estree": "6.4.0",
+    "@typescript-eslint/visitor-keys": "6.4.0",
     "acorn": "8.10.0",
     "acorn-jsx": "5.3.2",
     "angular-estree-parser": "7.0.0",

tests/format/typescript/module/__snapshots__/jsfmt.spec.js.snap

@@ -133,3 +133,45 @@ namespace X {
 
 ================================================================================
 `;
+
+exports[`namespace_nested.ts format 1`] = `
+====================================options=====================================
+parsers: ["typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+declare namespace abc1.def {}
+
+export declare namespace abc2.def {}
+
+export namespace abc3.def {}
+
+namespace abc4.def {}
+
+declare namespace abc5.def.ghi {}
+
+export declare namespace abc2.def.ghi {}
+
+export namespace abc3.def.ghi {}
+
+namespace abc4.def.ghi {}
+
+=====================================output=====================================
+declare namespace abc1.def {}
+
+export declare namespace abc2.def {}
+
+export namespace abc3.def {}
+
+namespace abc4.def {}
+
+declare namespace abc5.def.ghi {}
+
+export declare namespace abc2.def.ghi {}
+
+export namespace abc3.def.ghi {}
+
+namespace abc4.def.ghi {}
+
+================================================================================
+`;

tests/format/typescript/module/namespace_nested.ts

@@ -0,0 +1,15 @@
+declare namespace abc1.def {}
+
+export declare namespace abc2.def {}
+
+export namespace abc3.def {}
+
+namespace abc4.def {}
+
+declare namespace abc5.def.ghi {}
+
+export declare namespace abc2.def.ghi {}
+
+export namespace abc3.def.ghi {}
+
+namespace abc4.def.ghi {}

yarn.lock

@@ -1877,6 +1877,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/types@npm:6.4.0":
+  version: 6.4.0
+  resolution: "@typescript-eslint/types@npm:6.4.0"
+  checksum: 85b293ad1559dbf8103b2c4cfd0db11c3d9c970d502e2c13d4b1d35e420567042d7077a716d2b4e5113286314d5260f378f242a6dd22ad4b94b4aa69c5f79223
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/typescript-estree@npm:5.61.0":
   version: 5.61.0
   resolution: "@typescript-eslint/typescript-estree@npm:5.61.0"
@@ -1913,6 +1920,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/typescript-estree@npm:6.4.0":
+  version: 6.4.0
+  resolution: "@typescript-eslint/typescript-estree@npm:6.4.0"
+  dependencies:
+    "@typescript-eslint/types": 6.4.0
+    "@typescript-eslint/visitor-keys": 6.4.0
+    debug: ^4.3.4
+    globby: ^11.1.0
+    is-glob: ^4.0.3
+    semver: ^7.5.4
+    ts-api-utils: ^1.0.1
+  peerDependenciesMeta:
+    typescript:
+      optional: true
+  checksum: a8db3896550515d0adf140ee115527b409916c4a14ac1f45b5623d130a27ae2d08a1ac906ceda440b01167c88846e2b91ca2025f3d718bff389948f66990c1e7
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/utils@npm:6.3.0":
   version: 6.3.0
   resolution: "@typescript-eslint/utils@npm:6.3.0"
@@ -1968,6 +1993,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/visitor-keys@npm:6.4.0":
+  version: 6.4.0
+  resolution: "@typescript-eslint/visitor-keys@npm:6.4.0"
+  dependencies:
+    "@typescript-eslint/types": 6.4.0
+    eslint-visitor-keys: ^3.4.1
+  checksum: 42eb614b9c0a49b6929e093757d772fd27fe5dda9c75f4c7820d1710012c8257eea9bd4f1c4173e2265a8a9ad86cefc1a21869893e7304f3b29b94fa1f987554
+  languageName: node
+  linkType: hard
+
 "abbrev@npm:^1.0.0":
   version: 1.1.1
   resolution: "abbrev@npm:1.1.1"
@@ -7019,8 +7054,8 @@ __metadata:
     "@types/find-cache-dir": 3.2.1
     "@types/jest": 29.5.3
     "@typescript-eslint/eslint-plugin": 6.3.0
-    "@typescript-eslint/typescript-estree": 6.3.0
-    "@typescript-eslint/visitor-keys": 6.3.0
+    "@typescript-eslint/typescript-estree": 6.4.0
+    "@typescript-eslint/visitor-keys": 6.4.0
     acorn: 8.10.0
     acorn-jsx: 5.3.2
     angular-estree-parser: 7.0.0