Validate new version

dist/index.js

@@ -7343,6 +7343,9 @@ var inc_default = /*#__PURE__*/__nccwpck_require__.n(inc);
 // EXTERNAL MODULE: ./node_modules/semver/functions/diff.js
 var diff = __nccwpck_require__(4297);
 var diff_default = /*#__PURE__*/__nccwpck_require__.n(diff);
+// EXTERNAL MODULE: ./node_modules/semver/functions/gt.js
+var gt = __nccwpck_require__(4123);
+var gt_default = /*#__PURE__*/__nccwpck_require__.n(gt);
 // EXTERNAL MODULE: external "path"
 var external_path_ = __nccwpck_require__(5622);
 var external_path_default = /*#__PURE__*/__nccwpck_require__.n(external_path_);
@@ -8053,6 +8056,7 @@ function getManifestErrorMessagePrefix(invalidField, manifest, manifestDirPath)
 
 
 
+
 /**
  * Action entry function. Gets git tags, reads the work space root package.json,
  * and updates the package(s) of the repository per the Action inputs.
@@ -8079,6 +8083,9 @@ async function performUpdate(actionInputs) {
         newVersion = actionInputs.ReleaseVersion;
         versionDiff = diff_default()(currentVersion, newVersion);
     }
+    // Ensure that the new version is greater than the current version, and that
+    // there's no existing tag for it.
+    validateVersion(currentVersion, newVersion, tags);
     if (FieldNames.Workspaces in rootManifest) {
         console.log('Project appears to have workspaces. Applying monorepo workflow.');
         await updateMonorepo(newVersion, versionDiff, validateMonorepoPackageManifest(rootManifest, WORKSPACE_ROOT), repositoryUrl, tags);
@@ -8136,6 +8143,24 @@ async function updateMonorepo(newVersion, versionDiff, rootManifest, repositoryU
     await updatePackages(allPackages, updateSpecification);
     await updatePackage({ dirPath: WORKSPACE_ROOT, manifest: rootManifest }, { ...updateSpecification, shouldUpdateChangelog: false });
 }
+/**
+ * Throws an error if the current version is equal to the new version, if a
+ * tag for the new version already exists, or if the new version is less than
+ * the current version.
+ *
+ * @param currentVersion - The most recently released version.
+ * @param newVersion - The new version to be released.
+ * @param tags - All tags reachable from the current git HEAD, as from "git
+ * tag --merged".
+ */
+function validateVersion(currentVersion, newVersion, tags) {
+    if (!gt_default()(newVersion, currentVersion)) {
+        throw new Error(`The new version "${newVersion}" is not greater than the current version "${currentVersion}".`);
+    }
+    if (tags.has(`v${newVersion}`)) {
+        throw new Error(`Tag "v${newVersion}" for new version "${newVersion}" already exists.`);
+    }
+}
 //# sourceMappingURL=update.js.map
 ;// CONCATENATED MODULE: ./lib/index.js
 

src/update.test.ts

@@ -51,12 +51,7 @@ describe('performUpdate', () => {
     getRepositoryHttpsUrlMock = jest
       .spyOn(gitOperations, 'getRepositoryHttpsUrl')
       .mockImplementationOnce(async () => mockRepoUrl);
-    getTagsMock = jest
-      .spyOn(gitOperations, 'getTags')
-      .mockImplementationOnce(async () => [
-        new Set(['1.0.0', '1.1.0']),
-        '1.1.0',
-      ]);
+    getTagsMock = jest.spyOn(gitOperations, 'getTags');
     consoleLogMock = jest
       .spyOn(console, 'log')
       .mockImplementation(() => undefined);
@@ -72,6 +67,11 @@ describe('performUpdate', () => {
     const oldVersion = '1.1.0';
     const newVersion = '2.0.0';
 
+    getTagsMock.mockImplementationOnce(async () => [
+      new Set(['v1.0.0', 'v1.1.0']),
+      'v1.1.0',
+    ]);
+
     getPackageManifestMock.mockImplementationOnce(async () => {
       return {
         name: packageName,
@@ -103,6 +103,11 @@ describe('performUpdate', () => {
     const oldVersion = '1.1.0';
     const newVersion = '2.0.0';
 
+    getTagsMock.mockImplementationOnce(async () => [
+      new Set(['v1.0.0', 'v1.1.0']),
+      'v1.1.0',
+    ]);
+
     getPackageManifestMock.mockImplementationOnce(async () => {
       return {
         name: packageName,
@@ -138,6 +143,11 @@ describe('performUpdate', () => {
     const newVersion = '2.0.0';
     const workspaces: readonly string[] = ['a', 'b', 'c'];
 
+    getTagsMock.mockImplementationOnce(async () => [
+      new Set(['v1.0.0', 'v1.1.0']),
+      'v1.1.0',
+    ]);
+
     getPackageManifestMock.mockImplementationOnce(async () => {
       return {
         name: rootManifestName,
@@ -171,7 +181,7 @@ describe('performUpdate', () => {
     expect(getPackagesToUpdateMock).toHaveBeenCalledWith(
       { a: {}, b: {}, c: {} },
       true,
-      new Set(['1.0.0', '1.1.0']),
+      new Set(['v1.0.0', 'v1.1.0']),
     );
 
     expect(packageOperations.updatePackages).toHaveBeenCalledTimes(1);
@@ -209,4 +219,72 @@ describe('performUpdate', () => {
     expect(setActionOutputMock).toHaveBeenCalledTimes(1);
     expect(setActionOutputMock).toHaveBeenCalledWith('NEW_VERSION', newVersion);
   });
+
+  it('throws if the new version is less than the current version', async () => {
+    const packageName = 'A';
+    const oldVersion = '1.1.0';
+    const newVersion = '1.0.0';
+
+    getTagsMock.mockImplementationOnce(async () => [
+      new Set(['v1.1.0']),
+      'v1.1.0',
+    ]);
+
+    getPackageManifestMock.mockImplementationOnce(async () => {
+      return {
+        name: packageName,
+        version: oldVersion,
+      };
+    });
+
+    await expect(
+      performUpdate({ ReleaseType: null, ReleaseVersion: newVersion }),
+    ).rejects.toThrow(/^The new version "1\.0\.0" is not greater than/u);
+  });
+
+  it('throws if the new version is equal to the current version', async () => {
+    const packageName = 'A';
+    const oldVersion = '1.1.0';
+    const newVersion = '1.1.0';
+
+    getTagsMock.mockImplementationOnce(async () => [
+      new Set(['v1.1.0']),
+      'v1.1.0',
+    ]);
+
+    getPackageManifestMock.mockImplementationOnce(async () => {
+      return {
+        name: packageName,
+        version: oldVersion,
+      };
+    });
+
+    await expect(
+      performUpdate({ ReleaseType: null, ReleaseVersion: newVersion }),
+    ).rejects.toThrow(/^The new version "1\.1\.0" is not greater than/u);
+  });
+
+  it('throws if there is already a tag for the new version', async () => {
+    const packageName = 'A';
+    const oldVersion = '1.1.0';
+    const newVersion = '2.0.0';
+
+    getTagsMock.mockImplementationOnce(async () => [
+      new Set(['v1.0.0', 'v1.1.0', 'v2.0.0']),
+      'v2.0.0',
+    ]);
+
+    getPackageManifestMock.mockImplementationOnce(async () => {
+      return {
+        name: packageName,
+        version: oldVersion,
+      };
+    });
+
+    await expect(
+      performUpdate({ ReleaseType: null, ReleaseVersion: newVersion }),
+    ).rejects.toThrow(
+      /^Tag "v2\.0\.0" for new version "2\.0\.0" already exists\.$/u,
+    );
+  });
 });

src/update.ts

@@ -1,6 +1,7 @@
 import { setOutput as setActionOutput } from '@actions/core';
 import semverIncrement from 'semver/functions/inc';
 import semverDiff from 'semver/functions/diff';
+import semverGt from 'semver/functions/gt';
 import type { ReleaseType as SemverReleaseType } from 'semver';
 
 import { getRepositoryHttpsUrl, getTags } from './git-operations';
@@ -55,6 +56,10 @@ export async function performUpdate(actionInputs: ActionInputs): Promise<void> {
     versionDiff = semverDiff(currentVersion, newVersion) as SemverReleaseType;
   }
 
+  // Ensure that the new version is greater than the current version, and that
+  // there's no existing tag for it.
+  validateVersion(currentVersion, newVersion, tags);
+
   if (FieldNames.Workspaces in rootManifest) {
     console.log(
       'Project appears to have workspaces. Applying monorepo workflow.',
@@ -151,3 +156,30 @@ async function updateMonorepo(
     { ...updateSpecification, shouldUpdateChangelog: false },
   );
 }
+
+/**
+ * Throws an error if the current version is equal to the new version, if a
+ * tag for the new version already exists, or if the new version is less than
+ * the current version.
+ *
+ * @param currentVersion - The most recently released version.
+ * @param newVersion - The new version to be released.
+ * @param tags - All tags reachable from the current git HEAD, as from "git
+ * tag --merged".
+ */
+function validateVersion(
+  currentVersion: string,
+  newVersion: string,
+  tags: ReadonlySet<string>,
+) {
+  if (!semverGt(newVersion, currentVersion)) {
+    throw new Error(
+      `The new version "${newVersion}" is not greater than the current version "${currentVersion}".`,
+    );
+  }
+  if (tags.has(`v${newVersion}`)) {
+    throw new Error(
+      `Tag "v${newVersion}" for new version "${newVersion}" already exists.`,
+    );
+  }
+}