feat: use babel plugin to resolve options

Author: test123456789012345

package.json

@@ -18,6 +18,7 @@
     "test": "base test"
   },
   "dependencies": {
+    "@babel/core": "^7.10.2",
     "@dword-design/functions": "^1.1.2",
     "babel-plugin-module-resolver": "^4.0.0",
     "find-up": "^4.1.0",

src/index.spec.js

@@ -55,6 +55,11 @@ const runTest = config => () => {
 
 export default {
   'prefer-alias': {
+    files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
+    },
     code: endent`
       import foo from '../foo/bar'
     `,

src/rules/prefer-alias.js

@@ -1,4 +1,6 @@
+import { OptionManager } from '@babel/core'
 import {
+  find,
   findKey,
   keys,
   replace,
@@ -16,24 +18,20 @@ export default {
   meta: {
     type: 'suggestion',
     fixable: true,
-    schema: [
-      {
-        type: 'object',
-        properties: {
-          alias: { type: 'object' },
-        },
-      },
-    ],
   },
   create: context => {
-    const options = {
-      alias: { '@': '.' },
-      ...context.options[0],
-    }
     const path = context.getFilename()
     const folder = P.dirname(path)
     // can't check a non-file
     if (path === '<text>') return {}
+    const manager = new OptionManager()
+    const babelConfig = manager.init({
+      babelrc: true,
+      root: folder,
+      filename: path,
+    })
+    const plugin = babelConfig.plugins |> find({ key: 'module-resolver' })
+    const options = plugin.options
     return {
       ImportDeclaration: node => {
         const importPath = node.source.value

src/rules/prefer-alias.spec.js

@@ -10,7 +10,6 @@ const runTest = config => () => {
   const filename = config.filename || 'index.js'
   const output = config.output || config.code
   const messages = config.messages || []
-  const options = config.options || []
   return withLocalTmpDir(async () => {
     await outputFiles(config.files)
     const linter = new Linter()
@@ -21,7 +20,7 @@ const runTest = config => () => {
         ecmaVersion: 2015,
       },
       rules: {
-        'self/self': [1, ...options],
+        'self/self': 'error',
       },
     }
     const lintedMessages = linter.verify(config.code, lintingConfig, {
@@ -37,9 +36,19 @@ const runTest = config => () => {
 
 export default {
   external: {
+    files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
+    },
     code: "import foo from 'foo'",
   },
   parent: {
+    files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
+    },
     code: "import foo from '../foo/bar'",
     filename: P.join('sub', 'index.js'),
     messages: [
@@ -48,26 +57,42 @@ export default {
     output: "import foo from '@/foo/bar'",
   },
   'parent in-between folder': {
+    files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
+    },
     code: "import foo from '../foo'",
     filename: P.join('sub', 'sub', 'index.js'),
     messages: ["Unexpected parent import '../foo'. Use '@/sub/foo' instead"],
     output: "import foo from '@/sub/foo'",
   },
   'parent import but no matching alias': {
+    files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
+    },
     code: "import foo from '../../foo'",
     messages: [
       "Unexpected parent import '../../foo'. No matching alias found to fix the issue",
     ],
   },
   'alias parent': {
     files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
       'foo.js': '',
     },
     code: "import foo from '@/foo'",
     filename: 'sub/index.js',
   },
   'alias subpath': {
     files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
       'foo.js': '',
     },
     code: "import foo from '@/foo'",
@@ -78,17 +103,22 @@ export default {
   },
   scoped: {
     files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' } }]],
+      }),
       'foo.js': '',
     },
     code: "import foo from '@foo/bar'",
   },
   'cwd: subfolder': {
     files: {
+      '.babelrc.json': JSON.stringify({
+        plugins: [['module-resolver', { alias: { '@': '.' }, cwd: 'sub' }]],
+      }),
       'sub/foo.js': '',
     },
     code: "import foo from '../foo'",
     filename: P.join('sub', 'sub', 'index.js'),
-    options: [{ cwd: 'sub' }],
     messages: ["Unexpected parent import '../foo'. Use '@/foo' instead"],
     output: "import foo from '@/foo'",
   },
@@ -97,24 +127,31 @@ export default {
       sub: {
         'foo.js': '',
         'package.json': JSON.stringify({}),
+        '.babelrc.json': JSON.stringify({
+          plugins: [
+            ['module-resolver', { alias: { '@': '.' }, cwd: 'packagejson' }],
+          ],
+        }),
       },
     },
     code: "import foo from '../foo'",
     filename: P.join('sub', 'sub', 'index.js'),
-    options: [{ cwd: 'packagejson' }],
     messages: ["Unexpected parent import '../foo'. Use '@/foo' instead"],
     output: "import foo from '@/foo'",
   },
   'cwd: babelrc': {
     files: {
       sub: {
         'foo.js': '',
-        '.babelrc.json': JSON.stringify({}),
+        '.babelrc.json': JSON.stringify({
+          plugins: [
+            ['module-resolver', { alias: { '@': '.' }, cwd: 'babelrc' }],
+          ],
+        }),
       },
     },
     code: "import foo from '../foo'",
     filename: P.join('sub', 'sub', 'index.js'),
-    options: [{ cwd: 'babelrc' }],
     messages: ["Unexpected parent import '../foo'. Use '@/foo' instead"],
     output: "import foo from '@/foo'",
   },

yarn.lock

@@ -46,7 +46,7 @@
     invariant "^2.2.4"
     semver "^5.5.0"
 
-"@babel/core@^7.6.4", "@babel/core@^7.7.5", "@babel/core@^7.7.7":
+"@babel/core@^7.10.2", "@babel/core@^7.6.4", "@babel/core@^7.7.5", "@babel/core@^7.7.7":
   version "7.10.2"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.10.2.tgz#bd6786046668a925ac2bd2fd95b579b92a23b36a"
   integrity sha512-KQmV9yguEjQsXqyOUGKjS4+3K8/DlOCE2pZcq4augdQmtTy5iv5EHtmMSJ7V4c1BIPjuwtZYqYLCq9Ga+hGBRQ==