fix: @vue/cli-service can be an optional peer dependency

Author: haoqunjiang

index.js

@@ -1,15 +1,21 @@
+// https://github.com/benmosher/eslint-plugin-import/issues/1396
+const resolver = {
+  [require.resolve('eslint-import-resolver-node')]: {},
+}
+
+// in case the project does not depend on @vue/cli-service
+try {
+  resolver[require.resolve('eslint-import-resolver-webpack')] = {
+    config: require.resolve('@vue/cli-service/webpack.config.js'),
+  }
+} catch (e) {}
+
 module.exports = {
   extends: [
     require.resolve('eslint-config-standard')
   ],
   settings: {
-    'import/resolver': {
-      // https://github.com/benmosher/eslint-plugin-import/issues/1396
-      [require.resolve('eslint-import-resolver-node')]: {},
-      [require.resolve('eslint-import-resolver-webpack')]: {
-        config: require.resolve('@vue/cli-service/webpack.config.js'),
-      },
-    },
+    'import/resolver': resolver,
     'import/extensions': [
       '.js',
       '.jsx',

package.json

@@ -33,5 +33,10 @@
     "eslint-plugin-promise": ">= 4.2.1",
     "eslint-plugin-standard": ">= 4.0.0",
     "eslint-plugin-vue": ">= 6.1.2"
+  },
+  "peerDependenciesMeta": {
+    "@vue/cli-service": {
+      "optional": true
+    }
   }
 }