Add check for engines

Author: ota-meshi

.circleci/config.yml

@@ -82,5 +82,8 @@ jobs:
           paths:
             - node_modules
       - run:
-          name: Test
+          name: Lint
           command: npm run lint
+      - run:
+          name: Check
+          command: npm run valid

package.json

@@ -19,7 +19,8 @@
     "update": "node ./tools/update.js",
     "docs:watch": "vuepress dev docs",
     "predocs:build": "npm run update",
-    "docs:build": "vuepress build docs"
+    "docs:build": "vuepress build docs",
+    "valid": "node tools/valid-dependencies-engines"
   },
   "files": [
     "lib"

tools/valid-dependencies-engines.js

@@ -0,0 +1,28 @@
+/**
+ * @author Yosuke Ota
+ * See LICENSE file in root directory for full license.
+ */
+'use strict'
+
+const cp = require('child_process')
+const semver = require('semver')
+const pkg = require('../package.json')
+const nodeVer = pkg.engines.node
+const deps = { ...pkg.dependencies, ...pkg.peerDependencies }
+
+for (const [name, ver] of Object.entries(deps)) {
+  // eslint-disable-next-line no-console
+  // console.log(`call npm view "${name}@${ver}" --json`)
+  const json = cp.execSync(`npm view "${name}@${ver}" --json`, {
+    maxBuffer: 1024 * 1024 * 100
+  })
+  const meta = JSON.parse(json)
+  const v = meta.engines && meta.engines.node
+  if (v && !semver.subset(nodeVer, v)) {
+    // eslint-disable-next-line no-console
+    console.error(
+      `"${name}@${ver}" is not compatible with "node@${nodeVer}".\nAllowed is:${v}`
+    )
+    process.exit(1)
+  }
+}