Convert last remaining Python CI scripts to TypeScript

.github/actions/release-initialise/action.yml

@@ -25,17 +25,6 @@ runs:
       shell: bash
       run: npm ci
 
-    - name: Set up Python
-      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
-      with:
-        python-version: '3.12'
-
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install PyGithub==2.3.0 requests
-      shell: bash
-
     - name: Update git config
       run: |
         git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"

.github/workflows/codeql.yml

@@ -113,7 +113,6 @@ jobs:
       matrix:
         include:
           - language: actions
-          - language: python
 
     permissions:
       contents: read

.github/workflows/post-release-mergeback.yml

@@ -51,9 +51,9 @@ jobs:
         with:
           node-version: 24
           cache: 'npm'
-      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: '3.12'
+
+      - name: Install JavaScript dependencies
+        run: npm ci
 
       - name: Update git config
         run: |
@@ -127,7 +127,7 @@ jobs:
         env:
           PARTIAL_CHANGELOG: "${{ runner.temp }}/partial_changelog.md"
         run: |
-          python .github/workflows/script/prepare_changelog.py CHANGELOG.md > $PARTIAL_CHANGELOG
+          npx tsx pr-checks/prepare-changelog.ts --output="$PARTIAL_CHANGELOG"
 
           echo "::group::Partial CHANGELOG"
           cat $PARTIAL_CHANGELOG

.github/workflows/rollback-release.yml

@@ -93,7 +93,7 @@ jobs:
           LATEST_TAG: ${{ needs.prepare.outputs.latest_tag }}
           VERSION: "${{ needs.prepare.outputs.version }}"
         run: |
-          python .github/workflows/script/rollback_changelog.py \
+          npx tsx pr-checks/rollback-changelog.ts \
             --target-version "${ROLLBACK_TAG:1}" \
             --rollback-version "${LATEST_TAG:1}" \
             --new-version "$VERSION" > $NEW_CHANGELOG
@@ -128,7 +128,9 @@ jobs:
           NEW_CHANGELOG: "${{ runner.temp }}/new_changelog.md"
           PARTIAL_CHANGELOG: "${{ runner.temp }}/partial_changelog.md"
         run: |
-          python .github/workflows/script/prepare_changelog.py $NEW_CHANGELOG > $PARTIAL_CHANGELOG
+          npx tsx pr-checks/prepare-changelog.ts \
+            --changelog="$NEW_CHANGELOG" \
+            --output="$PARTIAL_CHANGELOG"
 
           echo "::group::Partial CHANGELOG"
           cat $PARTIAL_CHANGELOG

.github/workflows/update-bundle.yml

@@ -40,11 +40,6 @@ jobs:
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git config --global user.name "github-actions[bot]"
 
-      - name: Set up Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: '3.12'
-
       - name: Set up Node.js
         uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
@@ -120,7 +115,7 @@ jobs:
 
       - name: Create changelog note
         run: |
-          python .github/workflows/script/bundle_changelog.py
+          npx tsx pr-checks/bundle-changelog.ts
 
       - name: Push changelog note
         run: |

.github/workflows/update-supported-enterprise-server-versions.yml

@@ -22,11 +22,6 @@ jobs:
       pull-requests: write # needed to create pull request
 
     steps:
-      - name: Setup Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: "3.13"
-
       - name: Checkout CodeQL Action
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 

pr-checks/bundle-changelog.test.ts

@@ -0,0 +1,142 @@
+/**
+ * Tests for `bundle-changelog.ts`.
+ */
+
+import * as assert from "node:assert/strict";
+import * as fs from "node:fs";
+import * as os from "node:os";
+import * as path from "node:path";
+import { afterEach, beforeEach, describe, it } from "node:test";
+
+import {
+  CLI_VERSION_ENV_VAR,
+  getCLIVersion,
+  getPRNumber,
+  getPRUrl,
+  PR_URL_ENV_VAR,
+  updateChangelog,
+} from "./bundle-changelog";
+import {
+  EMPTY_CHANGELOG,
+  NO_CHANGES_STR,
+  UNRELEASED_PLACEHOLDER,
+} from "./changelog";
+
+let testDir: string;
+
+beforeEach(() => {
+  // Set up a temporary directory for testing
+  testDir = fs.mkdtempSync(path.join(os.tmpdir(), "bundle-changelog-test-"));
+});
+
+afterEach(() => {
+  /** Clean up temporary directories. */
+  fs.rmSync(testDir, { recursive: true, force: true });
+});
+
+describe("getCLIVersion", async () => {
+  await it("throws if the environment variable is not set", async () => {
+    delete process.env[CLI_VERSION_ENV_VAR];
+    assert.throws(() => getCLIVersion());
+  });
+
+  await it("throws if the environment variable is empty", async () => {
+    process.env[CLI_VERSION_ENV_VAR] = "    ";
+    assert.throws(() => getCLIVersion());
+  });
+
+  await it("returns value of the environment variable if set", async () => {
+    const testValue = "1.2.3";
+    process.env[CLI_VERSION_ENV_VAR] = testValue;
+    assert.deepEqual(getCLIVersion(), testValue);
+  });
+});
+
+const testPrUrl = "https://github.com/github/codeql-action/pulls/42";
+
+describe("getPRUrl", async () => {
+  await it("throws if the environment variable is not set", async () => {
+    delete process.env[PR_URL_ENV_VAR];
+    assert.throws(() => getPRUrl());
+  });
+
+  await it("throws if the environment variable is empty", async () => {
+    process.env[PR_URL_ENV_VAR] = "    ";
+    assert.throws(() => getPRUrl());
+  });
+
+  await it("returns value of the environment variable if set", async () => {
+    process.env[PR_URL_ENV_VAR] = testPrUrl;
+    assert.deepEqual(getPRUrl(), testPrUrl);
+  });
+});
+
+describe("getPRNumber", async () => {
+  await it("throws if the last part of the input is not a number", async () => {
+    assert.throws(() => getPRNumber(`${testPrUrl}/foo`));
+  });
+
+  await it("throws if the last part of the input is not a positive number", async () => {
+    assert.throws(() => getPRNumber(`${testPrUrl}/-100`));
+  });
+
+  await it("returns the PR number from an URL", async () => {
+    assert.equal(getPRNumber(testPrUrl), 42);
+  });
+});
+
+const testChangelog = `${EMPTY_CHANGELOG.trimEnd()}
+
+## 4.23.7
+
+- Other change
+
+## 4.23.6
+
+${NO_CHANGES_STR}`;
+
+const expectedChangelog = `# CodeQL Action Changelog
+
+## ${UNRELEASED_PLACEHOLDER}
+
+- Update default CodeQL bundle version to
+
+## 4.23.7
+
+- Other change
+
+## 4.23.6
+
+${NO_CHANGES_STR}`;
+
+describe("updateChangelog", async () => {
+  await it("removes `NO_CHANGES_STR` if present in [UNRELEASED] section", async () => {
+    const result = updateChangelog(EMPTY_CHANGELOG, "");
+    assert.ok(!result.includes(NO_CHANGES_STR.trim()));
+  });
+
+  await it("doesn't remove `NO_CHANGES_STR` if present in versioned section", async () => {
+    const result = updateChangelog(
+      EMPTY_CHANGELOG.replace(UNRELEASED_PLACEHOLDER, "1.2.3"),
+      "",
+    );
+    assert.ok(result.includes(NO_CHANGES_STR.trim()));
+  });
+
+  await it("throws if there are no sections", async () => {
+    assert.throws(() => {
+      updateChangelog(
+        "# CodeQL Action Changelog",
+        "- Update default CodeQL bundle version to",
+      );
+    });
+  });
+
+  await it("adds note at the end of the first section", async () => {
+    const result = updateChangelog(
+      testChangelog,
+      "- Update default CodeQL bundle version to",
+    );
+    assert.deepEqual(result, expectedChangelog);
+  });
+});