Raise an error when the version of node is older than package.json's …

…engines.node (#1922)

* Raise an error when the version of node is older than v12

* Update CHANGELOG

* Move engine check to cli runner

* Simplify

* Extract to own file and add tests

* Read minimum version from package.json

* Make semver a production dependency

CHANGELOG.md

@@ -12,6 +12,9 @@ Please see [CONTRIBUTING.md](https://github.com/cucumber/cucumber/blob/master/CO
 - Cucumber Expressions now support a wider array of parameter types (see [documentation](https://github.com/cucumber/cucumber-expressions#parameter-types))
 - Improved styling and usability on report from `html` formatter
 
+### Fixed
+- Warn users who are on an unsupported node version ([#1922](https://github.com/cucumber/cucumber-js/pull/1922))
+
 ### Changed
 - Switch from `colors` to `chalk` for terminal coloring ([#1895](https://github.com/cucumber/cucumber-js/pull/1895))
 

package.json

@@ -209,6 +209,7 @@
     "progress": "^2.0.3",
     "resolve": "^1.19.0",
     "resolve-pkg": "^2.0.0",
+    "semver": "7.3.5",
     "stack-chain": "^2.0.0",
     "string-argv": "^0.3.1",
     "tmp": "^0.2.1",
@@ -258,7 +259,6 @@
     "nyc": "15.1.0",
     "prettier": "2.5.1",
     "reindent-template-literals": "1.1.0",
-    "semver": "7.3.5",
     "shx": "0.3.4",
     "sinon": "13.0.1",
     "sinon-chai": "3.7.0",

src/cli/assert_node_engine_version.ts

@@ -0,0 +1,25 @@
+import fs from 'fs'
+import path from 'path'
+import semver from 'semver'
+
+type PackageJSON = {
+  engines: { node: string }
+}
+
+const readActualPackageJSON: () => PackageJSON = () =>
+  JSON.parse(
+    fs
+      .readFileSync(path.resolve(__dirname, '..', '..', 'package.json'))
+      .toString()
+  )
+
+export function assertNodeEngineVersion(
+  currentVersion: string,
+  readPackageJSON: () => PackageJSON = readActualPackageJSON
+): void {
+  const requiredVersion = readPackageJSON().engines.node
+  if (!semver.satisfies(currentVersion, requiredVersion)) {
+    const message = `Cucumber can only run on Node.js versions ${requiredVersion}. This Node.js version is ${currentVersion}`
+    throw new Error(message)
+  }
+}

src/cli/assert_node_engine_version_spec.ts

@@ -0,0 +1,18 @@
+import assert from 'assert'
+import { assertNodeEngineVersion } from './assert_node_engine_version'
+
+describe(assertNodeEngineVersion.name, () => {
+  it('fails when the version is lower than specified in package.json', () => {
+    assert.throws(() =>
+      assertNodeEngineVersion('v11.0.0', () => ({
+        engines: {
+          node: '>=12',
+        },
+      }))
+    )
+  })
+
+  it('passes when the version is greater than specified in package.json', () => {
+    assertNodeEngineVersion('v17.0.0')
+  })
+})

src/cli/run.ts

@@ -1,6 +1,7 @@
 import Cli, { ICliRunResult } from './'
 import VError from 'verror'
 import publishBanner from './publish_banner'
+import { assertNodeEngineVersion } from './assert_node_engine_version'
 
 function exitWithError(error: Error): void {
   console.error(VError.fullStack(error)) // eslint-disable-line no-console
@@ -12,6 +13,13 @@ function displayPublishAdvertisementBanner(): void {
 }
 
 export default async function run(): Promise<void> {
+  try {
+    assertNodeEngineVersion(process.version)
+  } catch (error) {
+    console.error(error.message) // eslint-disable-line no-console
+    process.exit(1)
+  }
+
   const cli = new Cli({
     argv: process.argv,
     cwd: process.cwd(),