Support default never in Angular v21.2 (#19034)

fisker · fisker · commit 881360b92b3c · 2026-04-10T10:19:53.000+08:00
diff --git a/package.json b/package.json
@@ -56,7 +56,7 @@
     "acorn": "8.15.0",
     "acorn-jsx": "5.3.2",
     "angular-estree-parser": "15.3.0",
-    "angular-html-parser": "10.3.0",
+    "angular-html-parser": "10.5.0",
     "camelcase": "9.0.0",
     "ci-info": "4.3.1",
     "cjk-regex": "3.4.0",
diff --git a/src/language-html/print/angular-control-flow-block.js b/src/language-html/print/angular-control-flow-block.js
@@ -20,6 +20,11 @@ function printAngularControlFlowBlock(path, options, print) {
 
   docs.push("@", node.name);
 
+  if (isSwitchExhaustiveCheck(node)) {
+    docs.push(";");
+    return docs;
+  }
+
   if (node.parameters) {
     docs.push(" (", group(print("parameters")), ")");
   }
@@ -53,6 +58,10 @@ function shouldCloseBlock(node) {
 const isSwitchCaseBlock = (node) =>
   node?.kind === "angularControlFlowBlock" &&
   (node.name === "case" || node.name === "default");
+
+const isSwitchExhaustiveCheck = (node) =>
+  node?.kind === "angularControlFlowBlock" && node.name === "default never";
+
 // https://github.com/angular/angular/commit/0ad3adc7c6d4094f1e3432a3f2e3bdc9862cb4fa#diff-77a6f285c6ea13d6644ef635e7495e71134d1141af2650cb9ae5631ff1f38bf2R263
 // https://github.com/prettier/prettier/issues/18563#issuecomment-3728354491
 function isSwitchFallthroughCase(node) {
diff --git a/tests/format/angular/control-flow/__snapshots__/format.test.js.snap b/tests/format/angular/control-flow/__snapshots__/format.test.js.snap
@@ -77,6 +77,32 @@ printWidth: 80
 ================================================================================
 `;
 
+exports[`default-never.html format 1`] = `
+====================================options=====================================
+parsers: ["angular"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+@switch (   cond.kind) {
+  @default never;
+}
+
+@switch (   cond.kind) {
+  @default never    ;
+}
+
+=====================================output=====================================
+@switch (cond.kind) {
+  @default never;
+}
+
+@switch (cond.kind) {
+  @default never;
+}
+
+================================================================================
+`;
+
 exports[`defer.html format 1`] = `
 ====================================options=====================================
 parsers: ["angular"]
diff --git a/tests/format/angular/control-flow/default-never.html b/tests/format/angular/control-flow/default-never.html
@@ -0,0 +1,7 @@
+@switch (   cond.kind) {
+  @default never;
+}
+
+@switch (   cond.kind) {
+  @default never    ;
+}
diff --git a/yarn.lock b/yarn.lock
@@ -2861,10 +2861,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"angular-html-parser@npm:10.3.0":
-  version: 10.3.0
-  resolution: "angular-html-parser@npm:10.3.0"
-  checksum: 10/97078879db8f53fc9645d2cd8c748c9eb3770790ec96f249bd96e0ab9293f65506b7facd201c17f2f18884e82550f3c362972e7b3a5448b0e1fb2a6938e9ef4d
+"angular-html-parser@npm:10.5.0":
+  version: 10.5.0
+  resolution: "angular-html-parser@npm:10.5.0"
+  checksum: 10/8544df535e0b111b44fbf8996141c63a2024f50912b08efaf28c91002260ad8b71af650c10a41aa6e3a0fd8c8f9750f40d4030c39587904aa816e0c88a108727
   languageName: node
   linkType: hard
 
@@ -7518,7 +7518,7 @@ __metadata:
     acorn: "npm:8.15.0"
     acorn-jsx: "npm:5.3.2"
     angular-estree-parser: "npm:15.3.0"
-    angular-html-parser: "npm:10.3.0"
+    angular-html-parser: "npm:10.5.0"
     base64-arraybuffer-es6: "npm:3.1.0"
     browserslist: "npm:4.28.0"
     browserslist-to-esbuild: "npm:2.1.1"
