add allow glob for rule no-unassigned-import, fix import-js#671

Author: kevin940726

src/rules/no-unassigned-import.js

@@ -1,4 +1,6 @@
 import isStaticRequire from '../core/staticRequire'
+import path from 'path'
+import minimatch from 'minimatch'
 
 function report(context, node) {
   context.report({
@@ -7,15 +9,40 @@ function report(context, node) {
   })
 }
 
+function testIsAllow(globs, filename, source) {
+  if (!Array.isArray(globs)) {
+    return false // default doens't allow any pattern
+  }
+
+  let filePath
+
+  if (source[0] !== '.' && source[0] !== '/') { // a node module
+    filePath = source
+  } else {
+    filePath = path.resolve(path.dirname(filename), source) // get source absolute path
+  }
+
+  return globs.find(glob => (
+    minimatch(filePath, glob) ||
+    minimatch(filePath, path.join(process.cwd(), glob))
+  )) !== undefined
+}
+
 function create(context) {
+  const options = context.options[0] || {}
+  const filename = context.getFilename()
+  const isAllow = source => testIsAllow(options.allow, filename, source)
+
   return {
     ImportDeclaration(node) {
-      if (node.specifiers.length === 0) {
+      if (node.specifiers.length === 0 && !isAllow(node.source.value)) {
         report(context, node)
       }
     },
     ExpressionStatement(node) {
-      if (node.expression.type === 'CallExpression' && isStaticRequire(node.expression)) {
+      if (node.expression.type === 'CallExpression' &&
+        isStaticRequire(node.expression) &&
+        !isAllow(node.expression.arguments[0].value)) {
         report(context, node.expression)
       }
     },
@@ -33,6 +60,7 @@ module.exports = {
           'devDependencies': { 'type': ['boolean', 'array'] },
           'optionalDependencies': { 'type': ['boolean', 'array'] },
           'peerDependencies': { 'type': ['boolean', 'array'] },
+          'allow': { 'type': 'array' },
         },
         'additionalProperties': false,
       },

tests/src/rules/no-unassigned-import.js

@@ -29,6 +29,38 @@ ruleTester.run('no-unassigned-import', rule, {
     test({ code: 'require("lodash").foo'}),
     test({ code: 'require("lodash").foo()'}),
     test({ code: 'require("lodash")()'}),
+    test({
+      code: 'import "app.css"',
+      options: [{ 'allow': ['**/*.css'] }],
+    }),
+    test({
+      code: 'import "app.css";',
+      options: [{ 'allow': ['*.css'] }],
+    }),
+    test({
+      code: 'import "./app.css"',
+      options: [{ 'allow': ['**/*.css'] }],
+    }),
+    test({
+      code: 'import "foo/bar"',
+      options: [{ 'allow': ['foo/**'] }],
+    }),
+    test({
+      code: 'import "foo/bar"',
+      options: [{ 'allow': ['foo/bar'] }],
+    }),
+    test({
+      code: 'import "../dir/app.css"',
+      options: [{ 'allow': ['**/*.css'] }],
+    }),
+    test({
+      code: 'import "../dir/app.js"',
+      options: [{ 'allow': ['**/dir/**'] }],
+    }),
+    test({
+      code: 'require("./app.css")',
+      options: [{ 'allow': ['**/*.css'] }],
+    }),
   ],
   invalid: [
     test({
@@ -39,5 +71,20 @@ ruleTester.run('no-unassigned-import', rule, {
       code: 'require("lodash")',
       errors: [error],
     }),
+    test({
+      code: 'import "./app.css"',
+      options: [{ 'allow': ['**/*.js'] }],
+      errors: [error],
+    }),
+    test({
+      code: 'import "./app.css"',
+      options: [{ 'allow': ['**/dir/**'] }],
+      errors: [error],
+    }),
+    test({
+      code: 'require("./app.css")',
+      options: [{ 'allow': ['**/*.js'] }],
+      errors: [error],
+    }),
   ],
 })