Sync typespec-java core and drop liftr-base/openai peer & dev deps

.chronus/changes/typespec-java-fix-per-client-serviceversion-2026-07-17-14-32-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@azure-tools/typespec-java"
+---
+
+Fix per-client `ServiceVersion` regression after migrating from js-yaml and lodash.

.chronus/changes/typespec-java-remove-liftr-openai-deps-2026-07-17-14-29-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: dependencies
+packages:
+  - "@azure-tools/typespec-java"
+---
+
+Remove `@azure-tools/typespec-liftr-base` and `@azure-tools/openai-typespec` from the peer and dev dependencies.

.chronus/changes/typespec-java-support-client-api-versions-2026-07-17-17-22-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@azure-tools/typespec-java"
+---
+
+Support `clientApiVersions`.

packages/typespec-java/core-commit.json

@@ -1 +1 @@
-{ "sha": "42927da57e230b59a93e3a36d787c4ede5e50051" }
+{ "sha": "8cef6d928a2ac3237d5eacb69b4ac671a54bcf92" }

packages/typespec-java/emitter-tests/SyncTests.ps1

@@ -72,13 +72,14 @@ finally {
 
 # Point the local @azure-tools/typespec-java dependency at the .tgz produced by
 # this repo's emitter (Build-TypeSpec.ps1 runs `npm pack`, which names the file
-# azure-tools-typespec-java-<version>.tgz). Keep that version in sync with
-# packages/typespec-java/package.json so a version bump there propagates here.
-# This depends only on the local repo, not on core, so it runs outside the
-# core-commit checkout as its own read-modify-write.
+# azure-tools-typespec-java-<version>.tgz). Keep both this test project's own
+# version and that dependency in sync with packages/typespec-java/package.json so
+# a version bump there propagates here. This depends only on the local repo, not
+# on core, so it runs outside the core-commit checkout as its own read-modify-write.
 $localPackageJsonPath = Join-Path $scriptRoot "package.json"
 $emitterVersion = (Get-Content (Join-Path $packageRoot "package.json") -Raw | ConvertFrom-Json).version
 $localPackage = Get-Content $localPackageJsonPath -Raw | ConvertFrom-Json
+$localPackage.version = $emitterVersion
 if ($localPackage.dependencies.PSObject.Properties.Name -contains "@azure-tools/typespec-java") {
     $localPackage.dependencies.'@azure-tools/typespec-java' = "file:../azure-tools-typespec-java-$emitterVersion.tgz"
 }

packages/typespec-java/emitter-tests/tsp/multiple-clients-same-version.tsp

@@ -0,0 +1,53 @@
+import "@typespec/rest";
+import "@typespec/http";
+import "@typespec/versioning";
+import "@azure-tools/typespec-client-generator-core";
+
+using TypeSpec.Http;
+using TypeSpec.Versioning;
+using Azure.ClientGenerator.Core;
+
+// A single versioned service that is split into two clients (AlphaClient, BetaClient). Both
+// clients therefore share the same set of api-versions. In this case the emitter must generate a
+// SINGLE shared `MultipleClientsSameVersionServiceVersion` enum (named after the service), NOT a
+// separate `<ClientName>ServiceVersion` per client.
+//
+// Regression test for the api-version comparison in code-model-builder.ts (getServiceVersion
+// postprocess): comparing ApiVersion object references (with `===`) instead of the version
+// strings incorrectly produced one ServiceVersion enum per client here, because each client
+// builds its own ApiVersion instances.
+@service(#{ title: "MultipleClientsSameVersion" })
+@versioned(ServiceApiVersions)
+namespace TspTest.MultipleClientsSameVersion;
+
+enum ServiceApiVersions {
+  v2023_01_01: "2023-01-01",
+  v2023_06_01: "2023-06-01",
+}
+
+model Resource {
+  @visibility(Lifecycle.Read)
+  id: string;
+
+  name: string;
+}
+
+@client({
+  service: TspTest.MultipleClientsSameVersion,
+  name: "AlphaClient",
+})
+@route("/alpha")
+interface AlphaClient {
+  @get
+  getAlpha(@path id: string): Resource;
+}
+
+@client({
+  service: TspTest.MultipleClientsSameVersion,
+  name: "BetaClient",
+})
+@route("/beta")
+interface BetaClient {
+  @get
+  getBeta(@path id: string): Resource;
+}

packages/typespec-java/package.json

@@ -49,8 +49,6 @@
     "@azure-tools/typespec-azure-resource-manager": "workspace:^",
     "@azure-tools/typespec-azure-rulesets": "workspace:^",
     "@azure-tools/typespec-client-generator-core": "workspace:^",
-    "@azure-tools/typespec-liftr-base": "catalog:",
-    "@azure-tools/openai-typespec": "catalog:",
     "@typespec/compiler": "workspace:^",
     "@typespec/events": "workspace:^",
     "@typespec/http": "workspace:^",
@@ -72,8 +70,6 @@
     "@azure-tools/typespec-azure-resource-manager": "workspace:^",
     "@azure-tools/typespec-azure-rulesets": "workspace:^",
     "@azure-tools/typespec-client-generator-core": "workspace:^",
-    "@azure-tools/typespec-liftr-base": "catalog:",
-    "@azure-tools/openai-typespec": "catalog:",
     "@types/node": "catalog:",
     "@typespec/compiler": "workspace:^",
     "@typespec/events": "workspace:^",