Disable deployment record for release workflow

Set deployment: false on the publish environment so the release
job accesses environment protection rules and secrets without
creating a deployment record.

.github/CODEOWNERS

@@ -1 +1,4 @@
 * @actions/actions-vscode-reviewers
+
+# Owners maintaining https://github.com/actions/runner-images
+/languageservice/src/value-providers/default.ts @actions/runner-images-writers @actions/actions-vscode-reviewers

.github/workflows/buildtest.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 20.x, 22.x]
+        node-version: [20.x, 22.x, 24.x]
 
     steps:
     - uses: actions/checkout@v4
@@ -37,10 +37,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Use Node.js 22.x
+    - name: Use Node.js 24.x
       uses: actions/setup-node@v4
       with:
-        node-version: 22.x
+        node-version: 24.x
         cache: 'npm'
         registry-url: 'https://npm.pkg.github.com'
     - run: npm ci

.github/workflows/publish.yml

@@ -29,7 +29,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: "16"
+          node-version: 24.x
 
       - name: Bump version and push
         run: |

.github/workflows/release.yml

@@ -50,7 +50,9 @@ jobs:
             return true;
 
   release:
-    environment: publish
+    environment:
+      name: publish
+      deployment: false
 
     needs: check-version-change
     if: ${{ needs.check-version-change.outputs.changed == 'true' }}
@@ -59,7 +61,7 @@ jobs:
 
     permissions:
       contents: write
-      packages: write
+      id-token: write
 
     env:
       PKG_VERSION: "" # will be set in the workflow
@@ -69,9 +71,8 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 22.x
+          node-version: 24.x
           cache: "npm"
-          scope: '@actions'
 
       - name: Parse version from lerna.json
         run: |
@@ -97,13 +98,6 @@ jobs:
             core.summary.addLink(`Release v${{ env.PKG_VERSION }}`, release.data.html_url);
             await core.summary.write();
 
-      - name: setup authentication
-        run: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" >> .npmrc
-        env:
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-
       - name: Publish packages
         run: |
-          lerna publish ${{ env.PKG_VERSION }} --yes --no-git-reset --no-git-tag-version
-        env:
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+          npx lerna publish ${{ env.PKG_VERSION }} --yes --no-git-reset --no-git-tag-version

.prettierignore

@@ -3,4 +3,5 @@ dist
 *.md
 *.js
 *.json
-*.d.ts
+*.d.ts
+/.nx/workspace-data

expressions/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@actions/expressions",
-  "version": "0.3.44",
+  "version": "0.3.47",
   "license": "MIT",
   "type": "module",
   "source": "./src/index.ts",
@@ -44,7 +44,7 @@
     "watch": "tsc --build tsconfig.build.json --watch"
   },
   "engines": {
-    "node": ">= 18"
+    "node": ">= 20"
   },
   "files": [
     "dist/**/*"

expressions/src/completion.ts

@@ -35,7 +35,6 @@ export function complete(
   context: Dictionary,
   extensionFunctions: FunctionInfo[],
   functions?: Map<string, FunctionDefinition>,
-  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   featureFlags?: FeatureFlags
 ): CompletionItem[] {
   // Lex
@@ -67,7 +66,7 @@ export function complete(
     const result = contextKeys(context);
 
     // Merge with functions
-    result.push(...functionItems(extensionFunctions));
+    result.push(...functionItems(extensionFunctions, featureFlags));
 
     return result;
   }
@@ -92,10 +91,15 @@ export function complete(
   return contextKeys(result);
 }
 
-function functionItems(extensionFunctions: FunctionInfo[]): CompletionItem[] {
+function functionItems(extensionFunctions: FunctionInfo[], featureFlags?: FeatureFlags): CompletionItem[] {
   const result: CompletionItem[] = [];
+  const flags = featureFlags ?? new FeatureFlags();
 
   for (const fdef of [...Object.values(wellKnownFunctions), ...extensionFunctions]) {
+    // Filter out case function if feature is disabled
+    if (fdef.name === "case" && !flags.isEnabled("allowCaseFunction")) {
+      continue;
+    }
     result.push({
       label: fdef.name,
       description: fdef.description,

expressions/src/features.test.ts

@@ -51,7 +51,13 @@ describe("FeatureFlags", () => {
 
     it("returns all features when all is enabled", () => {
       const flags = new FeatureFlags({all: true});
-      expect(flags.getEnabledFeatures()).toEqual(["missingInputsQuickfix", "blockScalarChompingWarning"]);
+      expect(flags.getEnabledFeatures()).toEqual([
+        "missingInputsQuickfix",
+        "blockScalarChompingWarning",
+        "allowCaseFunction",
+        "allowCronTimezone",
+        "allowCopilotRequestsPermission"
+      ]);
     });
   });
 });

expressions/src/features.ts

@@ -28,6 +28,24 @@ export interface ExperimentalFeatures {
    * @default false
    */
   blockScalarChompingWarning?: boolean;
+
+  /**
+   * Enable the case() function in expressions.
+   * @default false
+   */
+  allowCaseFunction?: boolean;
+
+  /**
+   * Enable the timezone input in cron schedule mappings.
+   * @default false
+   */
+  allowCronTimezone?: boolean;
+
+  /**
+   * Enable the copilot-requests permission in workflow permissions.
+   * @default false
+   */
+  allowCopilotRequestsPermission?: boolean;
 }
 
 /**
@@ -39,7 +57,13 @@ export type ExperimentalFeatureKey = Exclude<keyof ExperimentalFeatures, "all">;
  * All known experimental feature keys.
  * This list must be kept in sync with the ExperimentalFeatures interface.
  */
-const allFeatureKeys: ExperimentalFeatureKey[] = ["missingInputsQuickfix", "blockScalarChompingWarning"];
+const allFeatureKeys: ExperimentalFeatureKey[] = [
+  "missingInputsQuickfix",
+  "blockScalarChompingWarning",
+  "allowCaseFunction",
+  "allowCronTimezone",
+  "allowCopilotRequestsPermission"
+];
 
 export class FeatureFlags {
   private readonly features: ExperimentalFeatures;

languageserver/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@actions/languageserver",
-  "version": "0.3.44",
+  "version": "0.3.47",
   "description": "Language server for GitHub Actions",
   "license": "MIT",
   "type": "module",
@@ -48,8 +48,8 @@
     "actions-languageserver": "./bin/actions-languageserver"
   },
   "dependencies": {
-    "@actions/languageservice": "^0.3.44",
-    "@actions/workflow-parser": "^0.3.44",
+    "@actions/languageservice": "^0.3.47",
+    "@actions/workflow-parser": "^0.3.47",
     "@octokit/rest": "^21.1.1",
     "@octokit/types": "^9.0.0",
     "vscode-languageserver": "^8.0.2",
@@ -57,7 +57,7 @@
     "yaml": "^2.1.3"
   },
   "engines": {
-    "node": ">= 18"
+    "node": ">= 20"
   },
   "files": [
     "dist/**/*",
@@ -73,9 +73,10 @@
     "eslint-plugin-prettier": "^4.2.1",
     "fetch-mock": "^9.11.0",
     "jest": "^29.0.3",
+    "node-fetch": "^2.6.7",
     "prettier": "^2.8.3",
     "rimraf": "^3.0.2",
     "ts-jest": "^29.0.3",
-    "typescript": "^4.8.4"
+    "typescript": "^5.8.3"
   }
 }

languageservice/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@actions/languageservice",
-  "version": "0.3.44",
+  "version": "0.3.47",
   "description": "Language service for GitHub Actions",
   "license": "MIT",
   "type": "module",
@@ -47,15 +47,15 @@
     "watch": "tsc --build tsconfig.build.json --watch"
   },
   "dependencies": {
-    "@actions/expressions": "^0.3.44",
-    "@actions/workflow-parser": "^0.3.44",
+    "@actions/expressions": "^0.3.47",
+    "@actions/workflow-parser": "^0.3.47",
     "vscode-languageserver-textdocument": "^1.0.7",
     "vscode-languageserver-types": "^3.17.2",
     "vscode-uri": "^3.0.8",
     "yaml": "^2.1.1"
   },
   "engines": {
-    "node": ">= 18"
+    "node": ">= 20"
   },
   "files": [
     "dist/**/*"
@@ -74,6 +74,6 @@
     "rimraf": "^3.0.2",
     "ts-jest": "^29.0.3",
     "ts-node": "^10.9.1",
-    "typescript": "^4.8.4"
+    "typescript": "^5.8.3"
   }
 }

languageservice/src/complete.expressions.test.ts

@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
-import {data, DescriptionDictionary} from "@actions/expressions";
+import {data, DescriptionDictionary, FeatureFlags} from "@actions/expressions";
 import {CompletionItem, CompletionItemKind, MarkupContent} from "vscode-languageserver-types";
 import {complete, getExpressionInput} from "./complete.js";
 import {ContextProviderConfig} from "./context-providers/config.js";
@@ -69,7 +69,8 @@ describe("expressions", () => {
     it("single region", async () => {
       const input = "run-name: ${{ | }}";
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
 
       expect(result.map(x => x.label)).toEqual([
@@ -112,7 +113,8 @@ describe("expressions", () => {
     it("single region with existing input", async () => {
       const input = "run-name: ${{ g| }}";
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
 
       expect(result.map(x => x.label)).toEqual([
@@ -133,7 +135,8 @@ describe("expressions", () => {
     it("single region with existing condition", async () => {
       const input = "run-name: ${{ g| == 'test' }}";
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
 
       expect(result.map(x => x.label)).toEqual([
@@ -154,7 +157,8 @@ describe("expressions", () => {
     it("multiple regions with partial function", async () => {
       const input = "run-name: Run a ${{ inputs.test }} one-line script ${{ from|('test') == inputs.name }}";
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
 
       expect(result.map(x => x.label)).toEqual([
@@ -175,7 +179,8 @@ describe("expressions", () => {
     it("multiple regions - first region", async () => {
       const input = "run-name: test-${{ git| == 1 }}-${{ github.event }}";
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
 
       expect(result.map(x => x.label)).toEqual([
@@ -196,7 +201,8 @@ describe("expressions", () => {
     it("multiple regions", async () => {
       const input = "run-name: test-${{ github }}-${{ | }}";
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
 
       expect(result.map(x => x.label)).toEqual([
@@ -1175,7 +1181,8 @@ jobs:
 `;
 
       const result = await complete(...getPositionFromCursor(input), {
-        contextProviderConfig
+        contextProviderConfig,
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
       });
       expect(result.map(x => x.label)).toEqual([
         "env",

languageservice/src/complete.test.ts

@@ -6,6 +6,7 @@ import {getPositionFromCursor} from "./test-utils/cursor-position.js";
 import {TestLogger} from "./test-utils/logger.js";
 import {clearCache} from "./utils/workflow-cache.js";
 import {ValueProviderConfig, ValueProviderKind} from "./value-providers/config.js";
+import {FeatureFlags} from "@actions/expressions/features";
 
 registerLogger(new TestLogger());
 
@@ -19,8 +20,8 @@ describe("completion", () => {
     const result = await complete(...getPositionFromCursor(input));
 
     expect(result).not.toBeUndefined();
-    // 12 runner labels + 2 escape hatches (switch to list, switch to full syntax)
-    expect(result.length).toEqual(14);
+    // 28 runner labels + 2 escape hatches (switch to list, switch to full syntax)
+    expect(result.length).toEqual(30);
     const labels = result.map(x => x.label);
     expect(labels).toContain("macos-latest");
     expect(labels).toContain("(switch to list)");
@@ -59,7 +60,7 @@ jobs:
     const result = await complete(...getPositionFromCursor(input));
 
     expect(result).not.toBeUndefined();
-    expect(result.length).toEqual(11);
+    expect(result.length).toEqual(27);
 
     const labels = result.map(x => x.label);
     expect(labels).toContain("macos-latest");
@@ -897,9 +898,11 @@ jobs:
   });
 
   describe("expression completions", () => {
-    it("includes case function", async () => {
+    it("include case function when enabled", async () => {
       const input = "on: push\njobs:\n  build:\n    runs-on: ${{ c|";
-      const result = await complete(...getPositionFromCursor(input));
+      const result = await complete(...getPositionFromCursor(input), {
+        featureFlags: new FeatureFlags({allowCaseFunction: true})
+      });
 
       expect(result).not.toBeUndefined();
       // Expression completions starting with 'c': case, contains
@@ -907,5 +910,136 @@ jobs:
       expect(labels).toContain("case");
       expect(labels).toContain("contains");
     });
+
+    it("exclude case function when disabled", async () => {
+      const input = "on: push\njobs:\n  build:\n    runs-on: ${{ c|";
+      const result = await complete(...getPositionFromCursor(input), {
+        featureFlags: new FeatureFlags({allowCaseFunction: false})
+      });
+
+      expect(result).not.toBeUndefined();
+      // Expression completions starting with 'c': contains
+      const labels = result.map(x => x.label);
+      expect(labels).not.toContain("case");
+      expect(labels).toContain("contains");
+    });
+  });
+});
+
+describe("schedule timezone completion", () => {
+  it("includes timezone when allowCronTimezone is enabled", async () => {
+    const input = `on:
+  schedule:
+    - |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCronTimezone: true})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("cron");
+    expect(labels).toContain("timezone");
+  });
+
+  it("excludes timezone when allowCronTimezone is disabled", async () => {
+    const input = `on:
+  schedule:
+    - |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCronTimezone: false})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("cron");
+    expect(labels).not.toContain("timezone");
+  });
+
+  it("excludes timezone when no feature flags are provided", async () => {
+    const input = `on:
+  schedule:
+    - |`;
+    const result = await complete(...getPositionFromCursor(input));
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("cron");
+    expect(labels).not.toContain("timezone");
+  });
+});
+
+describe("permissions copilot-requests completion", () => {
+  it("includes copilot-requests when allowCopilotRequestsPermission is enabled", async () => {
+    const input = `on: push
+permissions:
+  |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: true})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).toContain("copilot-requests");
+  });
+
+  it("excludes copilot-requests when allowCopilotRequestsPermission is disabled", async () => {
+    const input = `on: push
+permissions:
+  |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: false})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).not.toContain("copilot-requests");
+  });
+
+  it("excludes copilot-requests when no feature flags are provided", async () => {
+    const input = `on: push
+permissions:
+  |`;
+    const result = await complete(...getPositionFromCursor(input));
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).not.toContain("copilot-requests");
+  });
+
+  it("includes copilot-requests in job-level permissions when allowCopilotRequestsPermission is enabled", async () => {
+    const input = `on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: true})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).toContain("copilot-requests");
+  });
+
+  it("excludes copilot-requests from job-level permissions when allowCopilotRequestsPermission is disabled", async () => {
+    const input = `on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: false})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).not.toContain("copilot-requests");
   });
 });

languageservice/src/complete.ts

@@ -163,6 +163,19 @@ export async function complete(
     values = filterActionRunsCompletions(values, path, parsedTemplate.value);
   }
 
+  // Filter `timezone` from schedule completions when the feature flag is disabled
+  if (!config?.featureFlags?.isEnabled("allowCronTimezone") && parent?.definition?.key === "schedule") {
+    values = values.filter(v => v.label !== "timezone");
+  }
+
+  // Filter `copilot-requests` from permissions completions when the feature flag is disabled
+  if (
+    !config?.featureFlags?.isEnabled("allowCopilotRequestsPermission") &&
+    parent?.definition?.key === "permissions-mapping"
+  ) {
+    values = values.filter(v => v.label !== "copilot-requests");
+  }
+
   // Offer "(switch to list)" / "(switch to mapping)" when the schema allows alternative forms
   const escapeHatches = getEscapeHatchCompletions(token, keyToken, indentString, newPos, schema);
   values.push(...escapeHatches);

languageservice/src/hover.test.ts

@@ -120,7 +120,9 @@ jobs:
 `;
     const result = await hover(...getPositionFromCursor(input));
     expect(result).not.toBeUndefined();
-    expect(result?.contents).toEqual("");
+    expect(result?.contents).toEqual(
+      "A cron expression that represents a schedule. A scheduled workflow will run at most once every 5 minutes."
+    );
   });
 
   it("on an invalid cron schedule", async () => {
@@ -130,7 +132,9 @@ jobs:
 `;
     const result = await hover(...getPositionFromCursor(input));
     expect(result).not.toBeUndefined();
-    expect(result?.contents).toEqual("");
+    expect(result?.contents).toEqual(
+      "A cron expression that represents a schedule. A scheduled workflow will run at most once every 5 minutes."
+    );
   });
 
   it("shows context inherited from parent nodes", async () => {
@@ -195,7 +199,7 @@ jobs:
     const result = await hover(...getPositionFromCursor(input), testHoverConfig("uses", "step-uses", undefined));
     expect(result).not.toBeUndefined();
     expect(result?.contents).toEqual(
-      "Selects an action to run as part of a step in your job. An action is a reusable unit of code. You can use an action defined in the same repository as the workflow, a public repository, or in a published Docker container image."
+      "Selects an action to run as part of a step in your job. An action is a reusable unit of code. You can use an action defined in the same repository as the workflow, a public repository, a [private repository with access enabled](https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/enabling-features-for-your-repository/managing-github-actions-settings-for-a-repository#allowing-access-to-components-in-a-private-repository), or in a published Docker container image."
     );
   });
 });

languageservice/src/validate.ts

@@ -84,7 +84,8 @@ async function validateWorkflow(textDocument: TextDocument, config?: ValidationC
       // Errors will be updated in the context. Attempt to do the conversion anyway in order to give the user more information
       const template = await getOrConvertWorkflowTemplate(result.context, result.value, textDocument.uri, config, {
         fetchReusableWorkflowDepth: config?.fileProvider ? 1 : 0,
-        errorPolicy: ErrorPolicy.TryConversion
+        errorPolicy: ErrorPolicy.TryConversion,
+        featureFlags: config?.featureFlags
       });
 
       // Validate expressions and value providers

languageservice/src/value-providers/default.ts

@@ -4,19 +4,36 @@ import {reusableJobInputs} from "./reusable-job-inputs.js";
 import {reusableJobSecrets} from "./reusable-job-secrets.js";
 import {stringsToValues} from "./strings-to-values.js";
 
+// Refer to: https://github.com/actions/runner-images?tab=readme-ov-file#available-images
 export const DEFAULT_RUNNER_LABELS = [
-  "ubuntu-latest",
-  "ubuntu-24.04",
-  "ubuntu-22.04",
-  "ubuntu-20.04",
-  "ubuntu-slim",
-  "windows-latest",
-  "windows-2022",
-  "windows-2019",
-  "macos-latest",
-  "macos-15",
+  "codespaces-prebuild",
+  "macos-13",
+  "macos-13-large",
+  "macos-13-xlarge",
   "macos-14",
-  "self-hosted"
+  "macos-14-large",
+  "macos-14-xlarge",
+  "macos-15",
+  "macos-15-intel",
+  "macos-15-large",
+  "macos-15-xlarge",
+  "macos-26",
+  "macos-26-large",
+  "macos-26-xlarge",
+  "macos-latest",
+  "macos-latest-large",
+  "macos-latest-xlarge",
+  "self-hosted",
+  "ubuntu-22.04",
+  "ubuntu-22.04-arm",
+  "ubuntu-24.04",
+  "ubuntu-24.04-arm",
+  "ubuntu-latest",
+  "ubuntu-slim",
+  "windows-2022",
+  "windows-2025",
+  "windows-2025-vs2026",
+  "windows-latest"
 ];
 
 const runsOnValueProvider = {

lerna.json

@@ -6,5 +6,5 @@
     "languageservice",
     "languageserver"
   ],
-  "version": "0.3.44"
+  "version": "0.3.47"
 }

package.json

@@ -9,10 +9,7 @@
     "./languageserver"
   ],
   "devDependencies": {
-    "lerna": "^8.2.2",
+    "lerna": "^9.0.0",
     "typescript": "5.8.3"
-  },
-  "overrides": {
-    "typescript": "$typescript"
   }
 }

workflow-parser/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@actions/workflow-parser",
-  "version": "0.3.44",
+  "version": "0.3.47",
   "license": "MIT",
   "type": "module",
   "source": "./src/index.ts",
@@ -48,12 +48,12 @@
     "watch": "tsc --build tsconfig.build.json --watch"
   },
   "dependencies": {
-    "@actions/expressions": "^0.3.44",
+    "@actions/expressions": "^0.3.47",
     "cronstrue": "^2.21.0",
     "yaml": "^2.0.0-8"
   },
   "engines": {
-    "node": ">= 18"
+    "node": ">= 20"
   },
   "files": [
     "dist/**/*"
@@ -69,6 +69,6 @@
     "prettier": "^2.8.3",
     "rimraf": "^3.0.2",
     "ts-jest": "^29.0.3",
-    "typescript": "^4.8.4"
+    "typescript": "^5.8.3"
   }
 }

workflow-parser/src/model/convert.test.ts

@@ -1,4 +1,5 @@
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
+import {FeatureFlags} from "@actions/expressions/features";
 import {nullTrace} from "../test-utils/null-trace.js";
 import {parseWorkflow} from "../workflows/workflow-parser.js";
 import {convertWorkflowTemplate, ErrorPolicy} from "./convert.js";
@@ -578,4 +579,140 @@ jobs:
       }
     });
   });
+
+  describe("schedule timezone with feature flags", () => {
+    it("allows timezone when allowCronTimezone is enabled", async () => {
+      const result = parseWorkflow(
+        {
+          name: "wf.yaml",
+          content: `on:
+  schedule:
+    - cron: '0 0 * * *'
+      timezone: America/New_York
+jobs:
+  build:
+    runs-on: ubuntu-latest`
+        },
+        nullTrace
+      );
+
+      const template = await convertWorkflowTemplate(result.context, result.value!, undefined, {
+        errorPolicy: ErrorPolicy.TryConversion,
+        featureFlags: new FeatureFlags({allowCronTimezone: true})
+      });
+
+      expect(result.context.errors.getErrors()).toHaveLength(0);
+      expect(template.events?.schedule).toHaveLength(1);
+      expect(template.events?.schedule?.[0]).toEqual({
+        cron: "0 0 * * *",
+        timezone: "America/New_York"
+      });
+    });
+
+    it("reports error when timezone is present but allowCronTimezone is disabled", async () => {
+      const result = parseWorkflow(
+        {
+          name: "wf.yaml",
+          content: `on:
+  schedule:
+    - cron: '0 0 * * *'
+      timezone: America/New_York
+jobs:
+  build:
+    runs-on: ubuntu-latest`
+        },
+        nullTrace
+      );
+
+      const template = await convertWorkflowTemplate(result.context, result.value!, undefined, {
+        errorPolicy: ErrorPolicy.TryConversion,
+        featureFlags: new FeatureFlags({allowCronTimezone: false})
+      });
+
+      // When timezone feature is disabled, error points at the timezone key
+      expect(result.context.errors.getErrors()).toHaveLength(1);
+      expect(result.context.errors.getErrors()[0].message).toContain("Key 'timezone' is not supported");
+      // Schedule entry is dropped due to unsupported key
+      expect(template.events?.schedule).toHaveLength(0);
+    });
+
+    it("reports error when timezone is present with no feature flags provided", async () => {
+      const result = parseWorkflow(
+        {
+          name: "wf.yaml",
+          content: `on:
+  schedule:
+    - cron: '0 0 * * *'
+      timezone: America/New_York
+jobs:
+  build:
+    runs-on: ubuntu-latest`
+        },
+        nullTrace
+      );
+
+      await convertWorkflowTemplate(result.context, result.value!, undefined, {
+        errorPolicy: ErrorPolicy.TryConversion
+      });
+
+      // Default is timezone disabled, so error points at the timezone key
+      expect(result.context.errors.getErrors()).toHaveLength(1);
+      expect(result.context.errors.getErrors()[0].message).toContain("Key 'timezone' is not supported");
+    });
+
+    it("reports error when cron is missing from schedule entry", async () => {
+      const result = parseWorkflow(
+        {
+          name: "wf.yaml",
+          content: `on:
+  schedule:
+    - timezone: America/New_York
+jobs:
+  build:
+    runs-on: ubuntu-latest`
+        },
+        nullTrace
+      );
+
+      const template = await convertWorkflowTemplate(result.context, result.value!, undefined, {
+        errorPolicy: ErrorPolicy.TryConversion,
+        featureFlags: new FeatureFlags({allowCronTimezone: true})
+      });
+
+      // Both schema validation and converter report the missing cron
+      expect(result.context.errors.getErrors().length).toBeGreaterThanOrEqual(1);
+      const errorMessages = result.context.errors
+        .getErrors()
+        .map(e => e.message)
+        .join(", ");
+      expect(errorMessages).toMatch(/Required property is missing: cron|Missing required key 'cron'/);
+      expect(template.events?.schedule).toHaveLength(0);
+    });
+
+    it("converts schedule without timezone when allowCronTimezone is enabled", async () => {
+      const result = parseWorkflow(
+        {
+          name: "wf.yaml",
+          content: `on:
+  schedule:
+    - cron: '0 0 * * *'
+jobs:
+  build:
+    runs-on: ubuntu-latest`
+        },
+        nullTrace
+      );
+
+      const template = await convertWorkflowTemplate(result.context, result.value!, undefined, {
+        errorPolicy: ErrorPolicy.TryConversion,
+        featureFlags: new FeatureFlags({allowCronTimezone: true})
+      });
+
+      expect(result.context.errors.getErrors()).toHaveLength(0);
+      expect(template.events?.schedule).toHaveLength(1);
+      expect(template.events?.schedule?.[0]).toEqual({
+        cron: "0 0 * * *"
+      });
+    });
+  });
 });

workflow-parser/src/model/convert.ts

@@ -1,3 +1,4 @@
+import {FeatureFlags} from "@actions/expressions/features";
 import {TemplateContext} from "../templates/template-context.js";
 import {TemplateToken, TemplateTokenError} from "../templates/tokens/template-token.js";
 import {FileProvider} from "../workflows/file-provider.js";
@@ -37,12 +38,18 @@ export type WorkflowTemplateConverterOptions = {
    * By default, conversion will be skipped if there are errors in the {@link TemplateContext}.
    */
   errorPolicy?: ErrorPolicy;
+
+  /**
+   * Optional feature flags to control which experimental features are enabled.
+   */
+  featureFlags?: FeatureFlags;
 };
 
 const defaultOptions: Required<WorkflowTemplateConverterOptions> = {
   maxReusableWorkflowDepth: 4,
   fetchReusableWorkflowDepth: 0,
-  errorPolicy: ErrorPolicy.ReturnErrorsOnly
+  errorPolicy: ErrorPolicy.ReturnErrorsOnly,
+  featureFlags: new FeatureFlags()
 };
 
 export async function convertWorkflowTemplate(
@@ -54,6 +61,11 @@ export async function convertWorkflowTemplate(
   const result = {} as WorkflowTemplate;
   const opts = getOptionsWithDefaults(options);
 
+  // Store feature flags in context state so converters can access them
+  if (opts.featureFlags) {
+    context.state["featureFlags"] = opts.featureFlags;
+  }
+
   if (context.errors.getErrors().length > 0 && opts.errorPolicy === ErrorPolicy.ReturnErrorsOnly) {
     result.errors = context.errors.getErrors().map(x => ({
       Message: x.message
@@ -142,6 +154,7 @@ function getOptionsWithDefaults(options: WorkflowTemplateConverterOptions): Requ
       options.fetchReusableWorkflowDepth !== undefined
         ? options.fetchReusableWorkflowDepth
         : defaultOptions.fetchReusableWorkflowDepth,
-    errorPolicy: options.errorPolicy !== undefined ? options.errorPolicy : defaultOptions.errorPolicy
+    errorPolicy: options.errorPolicy !== undefined ? options.errorPolicy : defaultOptions.errorPolicy,
+    featureFlags: options.featureFlags ?? defaultOptions.featureFlags
   };
 }

workflow-parser/src/model/converter/events.ts

@@ -1,3 +1,4 @@
+import {FeatureFlags} from "@actions/expressions/features";
 import {TemplateContext} from "../../templates/template-context.js";
 import {MappingToken} from "../../templates/tokens/mapping-token.js";
 import {SequenceToken} from "../../templates/tokens/sequence-token.js";
@@ -55,7 +56,8 @@ export function convertOn(context: TemplateContext, token: TemplateToken): Event
       // Schedule is the only event that can be a sequence, handle that separately
       if (eventName === "schedule") {
         const scheduleToken = item.value.assertSequence(`event ${eventName}`);
-        result.schedule = convertSchedule(context, scheduleToken);
+        const featureFlags = context.state["featureFlags"] as FeatureFlags | undefined;
+        result.schedule = convertSchedule(context, scheduleToken, featureFlags);
         continue;
       }
 
@@ -147,25 +149,47 @@ function convertFilter<T extends TypesFilterConfig & WorkflowFilterConfig & Vers
   return result;
 }
 
-function convertSchedule(context: TemplateContext, token: SequenceToken): ScheduleConfig[] | undefined {
+function convertSchedule(
+  context: TemplateContext,
+  token: SequenceToken,
+  featureFlags?: FeatureFlags
+): ScheduleConfig[] | undefined {
+  const flags = featureFlags ?? new FeatureFlags();
+  const allowTimezone = flags.isEnabled("allowCronTimezone");
   const result = [] as ScheduleConfig[];
+
   for (const item of token) {
     const mappingToken = item.assertMapping(`event schedule`);
-    if (mappingToken.count == 1) {
-      const schedule = mappingToken.get(0);
-      const scheduleKey = schedule.key.assertString(`schedule key`);
-      if (scheduleKey.value == "cron") {
-        const cron = schedule.value.assertString(`schedule cron`);
-        // Validate the cron string
+    const config: ScheduleConfig = {cron: ""};
+    let valid = true;
+
+    for (const entry of mappingToken) {
+      const key = entry.key.assertString(`schedule key`);
+
+      if (key.value === "cron") {
+        const cron = entry.value.assertString(`schedule cron`);
         if (!isValidCron(cron.value)) {
           context.error(cron, "Invalid cron expression. Expected format: '* * * * *' (minute hour day month weekday)");
         }
-        result.push({cron: cron.value});
+        config.cron = cron.value;
+      } else if (key.value === "timezone") {
+        if (allowTimezone) {
+          const timezone = entry.value.assertString(`schedule timezone`);
+          config.timezone = timezone.value;
+        } else {
+          context.error(key, `Key 'timezone' is not supported`);
+          valid = false;
+        }
       } else {
-        context.error(scheduleKey, `Invalid schedule key`);
+        context.error(key, `Invalid schedule key`);
+        valid = false;
       }
-    } else {
-      context.error(mappingToken, "Invalid format for 'schedule'");
+    }
+
+    if (valid && config.cron) {
+      result.push(config);
+    } else if (valid && !config.cron) {
+      context.error(mappingToken, "Missing required key 'cron' in schedule entry");
     }
   }
 

workflow-parser/src/model/workflow-template.ts

@@ -196,6 +196,7 @@ export type SecretConfig = {
 
 export type ScheduleConfig = {
   cron: string;
+  timezone?: string;
 };
 
 export type WorkflowFilterConfig = {

workflow-parser/src/workflow-v1.0.json

@@ -1602,6 +1602,10 @@
             "type": "permission-level-any",
             "description": "Repository contents, commits, branches, downloads, releases, and merges."
           },
+          "copilot-requests": {
+            "type": "permission-level-write-or-no-access",
+            "description": "GitHub Copilot requests."
+          },
           "deployments": {
             "type": "permission-level-any",
             "description": "Deployments and deployment statuses."
@@ -2172,7 +2176,7 @@
       }
     },
     "step-uses": {
-      "description": "Selects an action to run as part of a step in your job. An action is a reusable unit of code. You can use an action defined in the same repository as the workflow, a public repository, or in a published Docker container image.",
+      "description": "Selects an action to run as part of a step in your job. An action is a reusable unit of code. You can use an action defined in the same repository as the workflow, a public repository, a [private repository with access enabled](https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/enabling-features-for-your-repository/managing-github-actions-settings-for-a-repository#allowing-access-to-components-in-a-private-repository), or in a published Docker container image.",
       "string": {
         "require-non-empty": true
       }
@@ -2620,14 +2624,25 @@
     "cron-mapping": {
       "mapping": {
         "properties": {
-          "cron": "cron-pattern"
+          "cron": {
+            "type": "cron-pattern",
+            "required": true
+          },
+          "timezone": "timezone-string"
         }
       }
     },
     "cron-pattern": {
+      "description": "A cron expression that represents a schedule. A scheduled workflow will run at most once every 5 minutes.",
+      "string": {
+        "require-non-empty": true
+      }
+    },
+    "timezone-string": {
+      "description": "A string that represents the time zone a scheduled workflow will run relative to in IANA format (e.g. 'America/New_York' or 'Europe/London'). If omitted, the workflow will run relative to midnight UTC.",
       "string": {
         "require-non-empty": true
       }
     }
   }
-}
+}