feat: add support for deno (and jsr)

README.md

@@ -201,6 +201,7 @@ Release Please automates releases for the following flavors of repositories:
 | `sfdx`              | A repository with a [sfdx-project.json](https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_ws_config.htm) and a CHANGELOG.md |
 | `simple`            | [A repository with a version.txt and a CHANGELOG.md](https://github.com/googleapis/gapic-generator) |
 | `terraform-module`  | [A terraform module, with a version in the README.md, and a CHANGELOG.md](https://github.com/terraform-google-modules/terraform-google-project-factory) |
+| `deno`              | A repository with a deno.json, deno.jsonc, or jsr.json and a CHANGELOG.md |
 
 ## Setting up Release Please
 

__snapshots__/cli.js

@@ -43,11 +43,11 @@ Options:
                                                                         [string]
   --release-type                what type of repo is a release being created
                                 for?
-  [choices: "bazel", "dart", "dotnet-yoshi", "elixir", "expo", "go", "go-yoshi",
-          "helm", "java", "java-backport", "java-bom", "java-lts", "java-yoshi",
-       "java-yoshi-mono-repo", "krm-blueprint", "maven", "node", "ocaml", "php",
-         "php-yoshi", "python", "r", "ruby", "ruby-yoshi", "rust", "salesforce",
-                                           "sfdx", "simple", "terraform-module"]
+      [choices: "bazel", "dart", "deno", "dotnet-yoshi", "elixir", "expo", "go",
+            "go-yoshi", "helm", "java", "java-backport", "java-bom", "java-lts",
+         "java-yoshi", "java-yoshi-mono-repo", "krm-blueprint", "maven", "node",
+       "ocaml", "php", "php-yoshi", "python", "r", "ruby", "ruby-yoshi", "rust",
+                             "salesforce", "sfdx", "simple", "terraform-module"]
   --config-file                 where can the config file be found in the
                                 project? [default: "release-please-config.json"]
   --manifest-file               where can the manifest file be found in the
@@ -250,11 +250,11 @@ Options:
                                                                         [string]
   --release-type                    what type of repo is a release being created
                                     for?
-  [choices: "bazel", "dart", "dotnet-yoshi", "elixir", "expo", "go", "go-yoshi",
-          "helm", "java", "java-backport", "java-bom", "java-lts", "java-yoshi",
-       "java-yoshi-mono-repo", "krm-blueprint", "maven", "node", "ocaml", "php",
-         "php-yoshi", "python", "r", "ruby", "ruby-yoshi", "rust", "salesforce",
-                                           "sfdx", "simple", "terraform-module"]
+      [choices: "bazel", "dart", "deno", "dotnet-yoshi", "elixir", "expo", "go",
+            "go-yoshi", "helm", "java", "java-backport", "java-bom", "java-lts",
+         "java-yoshi", "java-yoshi-mono-repo", "krm-blueprint", "maven", "node",
+       "ocaml", "php", "php-yoshi", "python", "r", "ruby", "ruby-yoshi", "rust",
+                             "salesforce", "sfdx", "simple", "terraform-module"]
   --config-file                     where can the config file be found in the
                                     project?
                                          [default: "release-please-config.json"]

__snapshots__/deno-json.js

@@ -0,0 +1,56 @@
+exports['Deno updateContent updates the package version with deno.json 1'] = `
+{
+  "name": "@deno/esbuild-plugin",
+  "version": "2.0.0",
+  "license": "MIT",
+  "imports": {
+    "@deno/loader": "jsr:@deno/loader@^0.3.3",
+    "@std/expect": "jsr:@std/expect@^1.0.16",
+    "@std/path": "jsr:@std/path@^1.1.1",
+    "esbuild": "npm:esbuild@^0.25.5",
+    "fflate": "npm:fflate@^0.8.2",
+    "mime-db": "npm:mime-db@^1.54.0",
+    "preact": "npm:preact@^10.26.8",
+    "mapped": "./tests/fixtures/simple.ts"
+  }
+}
+
+`
+
+exports['Deno updateContent updates the package version with deno.jsonc 1'] = `
+{
+  "name": "@deno/esbuild-plugin",
+  "version": "2.0.0",
+  "license": "MIT",
+  "imports": {
+    "@deno/loader": "jsr:@deno/loader@^0.3.3",
+    "@std/expect": "jsr:@std/expect@^1.0.16",
+    "@std/path": "jsr:@std/path@^1.1.1",
+    "esbuild": "npm:esbuild@^0.25.5",
+    "fflate": "npm:fflate@^0.8.2",
+    "mime-db": "npm:mime-db@^1.54.0",
+    "preact": "npm:preact@^10.26.8",
+    "mapped": "./tests/fixtures/simple.ts"
+  }
+}
+
+`
+
+exports['Deno updateContent updates the package version with jsr.json 1'] = `
+{
+  "name": "@deno/esbuild-plugin",
+  "version": "2.0.0",
+  "license": "MIT",
+  "imports": {
+    "@deno/loader": "jsr:@deno/loader@^0.3.3",
+    "@std/expect": "jsr:@std/expect@^1.0.16",
+    "@std/path": "jsr:@std/path@^1.1.1",
+    "esbuild": "npm:esbuild@^0.25.5",
+    "fflate": "npm:fflate@^0.8.2",
+    "mime-db": "npm:mime-db@^1.54.0",
+    "preact": "npm:preact@^10.26.8",
+    "mapped": "./tests/fixtures/simple.ts"
+  }
+}
+
+`

__snapshots__/deno.js

@@ -0,0 +1,37 @@
+exports['Deno buildReleasePullRequest updates changelog.json if present 1'] = `
+{
+  "entries": [
+    {
+      "changes": [
+        {
+          "type": "fix",
+          "sha": "845db1381b3d5d20151cad2588f85feb",
+          "message": "update dependency com.google.cloud:google-cloud-storage to v1.120.0",
+          "issues": [],
+          "scope": "deps"
+        },
+        {
+          "type": "chore",
+          "sha": "b3f8966b023b8f21ce127142aa91841c",
+          "message": "update a very important dep",
+          "issues": [],
+          "breakingChangeNote": "update a very important dep"
+        },
+        {
+          "type": "fix",
+          "sha": "08ca01180a91c0a1ba8992b491db9212",
+          "message": "update dependency com.google.cloud:google-cloud-spanner to v1.50.0",
+          "issues": [],
+          "scope": "deps"
+        }
+      ],
+      "version": "1.0.0",
+      "language": "TYPESCRIPT",
+      "artifactName": "deno-test-repo",
+      "id": "abc-123-efd-qwerty",
+      "createTime": "2023-01-05T16:42:33.446Z"
+    }
+  ],
+  "updateTime": "2023-01-05T16:42:33.446Z"
+}
+`

docs/customizing.md

@@ -26,6 +26,7 @@ Release Please automates releases for the following flavors of repositories:
 | `sfdx`              | A repository with a [sfdx-project.json](https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_ws_config.htm) and a CHANGELOG.md |
 | `simple`            | [A repository with a version.txt and a CHANGELOG.md](https://github.com/googleapis/gapic-generator) |
 | `terraform-module`  | [A terraform module, with a version in the README.md, and a CHANGELOG.md](https://github.com/terraform-google-modules/terraform-google-project-factory) |
+| `deno`              | A repository with a deno.json, deno.jsonc, or jsr.json and a CHANGELOG.md |
 
 ### Adding additional strategy types
 

src/factory.ts

@@ -20,6 +20,7 @@ import {ReleaserConfig} from './manifest';
 import {BaseStrategyOptions} from './strategies/base';
 import {Bazel} from './strategies/bazel';
 import {Dart} from './strategies/dart';
+import {Deno} from './strategies/deno';
 import {DotnetYoshi} from './strategies/dotnet-yoshi';
 import {Elixir} from './strategies/elixir';
 import {Expo} from './strategies/expo';
@@ -111,6 +112,7 @@ const releasers: Record<string, ReleaseBuilder> = {
   elixir: options => new Elixir(options),
   dart: options => new Dart(options),
   bazel: options => new Bazel(options),
+  deno: options => new Deno(options),
 };
 
 export async function buildStrategy(

src/strategies/deno.ts

@@ -0,0 +1,112 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// Copyright 2025 Google LLC
+// Licensed under the Apache License, Version 2.0
+
+import {GitHubFileContents} from '@google-automations/git-file-utils';
+import {FileNotFoundError, MissingRequiredFileError} from '../errors';
+import {Update} from '../update';
+import {Changelog} from '../updaters/changelog';
+import {ChangelogJson} from '../updaters/changelog-json';
+import {filterCommits} from '../util/filter-commits';
+import {BaseStrategy, BuildUpdatesOptions} from './base';
+import {DenoJson} from '../updaters/deno/deno-json';
+
+const CONFIG_FILES = ['deno.json', 'deno.jsonc', 'jsr.json'];
+
+export class Deno extends BaseStrategy {
+  private denoConfigContents?: GitHubFileContents;
+  private denoConfigPath?: string;
+
+  protected async buildUpdates(
+    options: BuildUpdatesOptions
+  ): Promise<Update[]> {
+    const updates: Update[] = [];
+    const version = options.newVersion;
+    const packageName = (await this.getDefaultPackageName()) ?? '';
+
+    // Update config file
+    if (this.denoConfigPath && this.denoConfigContents) {
+      updates.push({
+        path: this.addPath(this.denoConfigPath),
+        createIfMissing: false,
+        cachedFileContents: this.denoConfigContents,
+        updater: new DenoJson({version}),
+      });
+    }
+
+    // Changelog
+    if (!this.skipChangelog) {
+      updates.push({
+        path: this.addPath(this.changelogPath),
+        createIfMissing: true,
+        updater: new Changelog({
+          version,
+          changelogEntry: options.changelogEntry,
+        }),
+      });
+    }
+
+    // If a machine readable changelog.json exists update it:
+    if (options.commits && packageName && !this.skipChangelog) {
+      const commits = filterCommits(options.commits, this.changelogSections);
+      updates.push({
+        path: 'changelog.json',
+        createIfMissing: false,
+        updater: new ChangelogJson({
+          artifactName: packageName,
+          version,
+          commits,
+          language: 'TYPESCRIPT',
+        }),
+      });
+    }
+
+    return updates;
+  }
+
+  async getDefaultPackageName(): Promise<string | undefined> {
+    const configContents = await this.getDenoConfigContents();
+    const config = JSON.parse(configContents.parsedContent);
+    return config.name;
+  }
+
+  protected async getDenoConfigContents(): Promise<GitHubFileContents> {
+    if (!this.denoConfigContents) {
+      for (const file of CONFIG_FILES) {
+        try {
+          this.denoConfigContents = await this.github.getFileContentsOnBranch(
+            this.addPath(file),
+            this.targetBranch
+          );
+          this.denoConfigPath = file;
+          break;
+        } catch (e) {
+          if (!(e instanceof FileNotFoundError)) {
+            throw e;
+          }
+        }
+      }
+
+      if (!this.denoConfigContents || !this.denoConfigPath) {
+        throw new MissingRequiredFileError(
+          CONFIG_FILES.join(', '),
+          'deno',
+          `${this.repository.owner}/${this.repository.repo}`
+        );
+      }
+    }
+    return this.denoConfigContents;
+  }
+}

src/updaters/deno/deno-json.ts

@@ -0,0 +1,47 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import {jsonStringify} from '../../util/json-stringify';
+import {logger as defaultLogger, Logger} from '../../util/logger';
+import {DefaultUpdater, UpdateOptions} from '../default';
+
+export type DenoJsonDescriptor = {
+  name?: string;
+  version: string;
+};
+
+export type DenoJsonOptions = UpdateOptions;
+
+/**
+ * This updates a Deno deno.json file's main version.
+ */
+export class DenoJson extends DefaultUpdater {
+  constructor(options: DenoJsonOptions) {
+    super(options);
+  }
+
+  /**
+   * Given initial file contents, return updated contents.
+   * @param {string} content The initial content
+   * @param logger
+   * @returns {string} The updated content
+   */
+  updateContent(content: string, logger: Logger = defaultLogger): string {
+    const parsed = JSON.parse(content) as DenoJsonDescriptor;
+    logger.info(`updating from ${parsed.version} to ${this.version}`);
+    parsed.version = this.version.toString();
+
+    return jsonStringify(parsed, content);
+  }
+}

test/fixtures/strategies/deno/changelog.json

@@ -0,0 +1,4 @@
+{
+  "repository": "google-cloud-deno",
+  "entries": []
+}