Webpack Resolver fix for case config is an array of functions (#1220)

* Added test for plugin-webpack-resolver: webpack config is an array of functions

* plugin-webpack-resolver: handle case when webpack config is an array of functions

* Updated Changelog

* Updated call of webpack config function

Author: idudinov

resolvers/webpack/CHANGELOG.md

@@ -4,6 +4,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This change log adheres to standards from [Keep a CHANGELOG](http://keepachangelog.com).
 
 ## Unreleased
+### Fixed
+- crash when webpack config is an array of functions ([#1219]/[#1220] by [@idudinov])
 
 ## 0.10.1 - 2018-06-24
 ### Fixed
@@ -104,6 +106,7 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 - `interpret` configs (such as `.babel.js`).
   Thanks to [@gausie] for the initial PR ([#164], ages ago! 😅) and [@jquense] for tests ([#278]).
 
+[#1220]: https://github.com/benmosher/eslint-plugin-import/pull/1220
 [#1091]: https://github.com/benmosher/eslint-plugin-import/pull/1091
 [#969]: https://github.com/benmosher/eslint-plugin-import/pull/969
 [#968]: https://github.com/benmosher/eslint-plugin-import/pull/968
@@ -121,6 +124,7 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 [#181]: https://github.com/benmosher/eslint-plugin-import/pull/181
 [#164]: https://github.com/benmosher/eslint-plugin-import/pull/164
 
+[#1219]: https://github.com/benmosher/eslint-plugin-import/issues/1219
 [#788]: https://github.com/benmosher/eslint-plugin-import/issues/788
 [#767]: https://github.com/benmosher/eslint-plugin-import/issues/767
 [#681]: https://github.com/benmosher/eslint-plugin-import/issues/681
@@ -147,3 +151,4 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 [@SkeLLLa]: https://github.com/SkeLLLa
 [@graingert]: https://github.com/graingert
 [@mattkrick]: https://github.com/mattkrick
+[@idudinov]: https://github.com/idudinov

resolvers/webpack/index.js

@@ -87,10 +87,18 @@ exports.resolve = function (source, file, settings) {
   }
 
   if (typeof webpackConfig === 'function') {
-    webpackConfig = webpackConfig(env)
+    webpackConfig = webpackConfig(env, {})
   }
 
   if (Array.isArray(webpackConfig)) {
+    webpackConfig = webpackConfig.map(cfg => {
+      if (typeof cfg === 'function') {
+        return cfg(env, {})
+      }
+
+      return cfg
+    })
+
     if (typeof configIndex !== 'undefined' && webpackConfig.length > configIndex) {
       webpackConfig = webpackConfig[configIndex]
     }

resolvers/webpack/test/config.js

@@ -103,4 +103,15 @@ describe("config", function () {
         .and.equal(path.join(__dirname, 'files', 'some', 'goofy', 'path', 'bar.js'))
   })
 
+  it('finds the config at option env when config is an array of functions', function() {
+    var settings = {
+      config: require(path.join(__dirname, './files/webpack.function.config.multiple.js')),
+      env: {
+        dummy: true,
+      },
+    }
+
+    expect(resolve('bar', file, settings)).to.have.property('path')
+        .and.equal(path.join(__dirname, 'files', 'some', 'goofy', 'path', 'bar.js'))
+  })
 })

resolvers/webpack/test/files/webpack.function.config.multiple.js

@@ -0,0 +1,43 @@
+var path = require('path')
+var pluginsTest = require('webpack-resolver-plugin-test')
+
+module.exports = [function(env) {
+  return {
+    resolve: {
+      alias: {
+        'foo': path.join(__dirname, 'some', 'goofy', 'path', 'foo.js'),
+        'bar': env ? path.join(__dirname, 'some', 'goofy', 'path', 'bar.js') : undefined,
+        'some-alias': path.join(__dirname, 'some'),
+      },
+      modules: [
+        path.join(__dirname, 'src'),
+        path.join(__dirname, 'fallback'),
+        'node_modules',
+        'bower_components',
+      ],
+      modulesDirectories: ['node_modules', 'bower_components'],
+      root: path.join(__dirname, 'src'),
+      fallback: path.join(__dirname, 'fallback'),
+    },
+
+    externals: [
+      { 'jquery': 'jQuery' },
+      'bootstrap',
+      function (context, request, callback) {
+        if (request === 'underscore') {
+          return callback(null, 'underscore')
+        }
+        callback()
+      },
+    ],
+
+    plugins: [
+      new pluginsTest.ResolverPlugin([
+        new pluginsTest.SimpleResolver(
+          path.join(__dirname, 'some', 'bar', 'bar.js'),
+          path.join(__dirname, 'some', 'bar')
+        ),
+      ]),
+    ],
+  }
+}]