Avoid setting launchEditor if no $EDITOR is setup.

Author: Robert Jackson

__tests__/bin-test.js

@@ -6,6 +6,8 @@ const execa = require('execa');
 
 const BIN_PATH = require.resolve('../bin/rwjblue-release-it-setup');
 const ROOT = process.cwd();
+const EDITOR = 'EDITOR' in process.env ? process.env.EDITOR : null;
+const PATH = process.env.PATH;
 
 function exec(args) {
   return execa(process.execPath, ['--unhandled-rejections=strict', BIN_PATH, ...args]);
@@ -18,10 +20,22 @@ describe('main binary', function () {
     project = new Project('some-thing-cool', '0.1.0');
     project.writeSync();
     process.chdir(path.join(project.root, project.name));
+
+    // ensure an EDITOR is present
+    process.env.EDITOR = '/bin/whatever';
   });
 
   afterEach(function () {
     process.chdir(ROOT);
+
+    // reset process.env.EDITOR to initial state
+    if (EDITOR === null) {
+      delete process.env.EDITOR;
+    } else {
+      process.env.EDITOR = EDITOR;
+    }
+
+    process.env.PATH = PATH;
   });
 
   it('adds CHANGELOG.md file', async function () {
@@ -178,6 +192,20 @@ describe('main binary', function () {
       `);
     });
 
+    it('does not add launchEditor if no $EDITOR is found', async function () {
+      delete process.env.EDITOR;
+
+      // have to reset $PATH in order to ensure `launchEditor` is false on Ubuntu systems
+      // since they always have a `editor` command
+      process.env.PATH = '';
+
+      await exec(['--no-install', '--no-label-updates']);
+
+      let pkg = JSON.parse(fs.readFileSync('package.json', { encoding: 'utf8' }));
+
+      expect(pkg['release-it'].plugins['release-it-lerna-changelog'].launchEditor).toBeFalsy();
+    });
+
     it('adds release-it configuration for monorepos to package.json', async function () {
       project.pkg.workspaces = ['packages/*'];
       project.writeSync();

bin/rwjblue-release-it-setup.js

@@ -6,12 +6,14 @@ const util = require('util');
 const execa = require('execa');
 const sortPackageJson = require('sort-package-json');
 const getRepoInfoFromURL = require('hosted-git-info').fromUrl;
+const gitconfig = util.promisify(require('gitconfiglocal'));
 const semver = require('semver');
+const which = require('which');
+
 const skipInstall = process.argv.includes('--no-install');
 const skipLabels = process.argv.includes('--no-label-updates');
 const labelsOnly = process.argv.includes('--labels-only');
 const update = process.argv.includes('--update');
-const gitconfig = util.promisify(require('gitconfiglocal'));
 
 const RELEASE_IT_VERSION = (() => {
   let pkg = require('../package');
@@ -33,6 +35,16 @@ const RELEASE_IT_YARN_WORKSPACES_VERSION = (() => {
 
 const DETECT_TRAILING_WHITESPACE = /\s+$/;
 
+function hasEditor() {
+  let EDITOR = process.env.EDITOR;
+
+  if (!EDITOR) {
+    EDITOR = which.sync('editor', { nothrow: true });
+  }
+
+  return !!EDITOR;
+}
+
 function getDependencyRange(theirs, ours) {
   if (theirs) {
     let ourRange = new semver.Range(ours);
@@ -113,7 +125,7 @@ async function updatePackageJSON() {
   releaseItConfig.plugins['release-it-lerna-changelog'] = Object.assign(
     {
       infile: 'CHANGELOG.md',
-      launchEditor: true,
+      launchEditor: hasEditor(),
     },
     releaseItConfig.plugins['release-it-lerna-changelog']
   );

package.json

@@ -25,7 +25,8 @@
     "github-label-sync": "^1.6.0",
     "hosted-git-info": "^3.0.4",
     "semver": "^7.3.2",
-    "sort-package-json": "^1.42.2"
+    "sort-package-json": "^1.42.2",
+    "which": "^2.0.2"
   },
   "devDependencies": {
     "eslint": "^7.0.0",