fix: warn on unknown, plugin

Author: evenstensberg

lib/bootstrap.js

@@ -21,7 +21,7 @@ const isCommandUsed = commands =>
     });
 
 const resolveNegatedArgs = args => {
-    args._unknown.forEach(arg => {
+    args._unknown.forEach((arg, idx) => {
         if (arg.includes('--') || arg.includes('--no')) {
             const argPair = arg.split('=');
             const optName = arg.includes('--no') ? argPair[0].slice(5) : argPair[0].slice(2);
@@ -32,10 +32,12 @@ const resolveNegatedArgs = args => {
             } else if (argValue === 'true') {
                 argValue = true;
             }
-
             const cliFlag = core.find(opt => opt.name === optName);
-            args[cliFlag.group][optName] = argValue;
-            args._all[optName] = argValue;
+            if(cliFlag) {
+                args[cliFlag.group][optName] = argValue;
+                args._all[optName] = argValue;
+                args._unknown[idx] = null;
+            }
         }
     });
 }
@@ -62,6 +64,9 @@ async function runCLI(cli, commandIsUsed) {
             args = cmdArgs(core, { stopAtFirstUnknown: false, partial: true });
             if (args._unknown) {
                 resolveNegatedArgs(args);
+                args._unknown.filter(e => e).forEach(unknown => {
+                    process.cliLogger.warn('Unknown argument:', unknown);
+                });
             }
             const result = await cli.run(args, core);
             if (!result) {
@@ -94,7 +99,7 @@ async function runCLI(cli, commandIsUsed) {
 
                 await cli.run(args, core);
                 console.log('\n')
-                process.cliLogger.warn(`duplicate flags found, defaulting to last set value`);
+                process.cliLogger.warn(`Duplicate flags found, defaulting to last set value`);
             }
             else {
                 process.cliLogger.error(err);

lib/groups/advanced.js

@@ -59,8 +59,8 @@ class AdvancedGroup extends GroupHelper {
             }
         }
         if (args.prefetch) {
-            const PrefetchPlugin = require('webpack').PrefetchPlugin;
-            const prefetchVal = new PrefetchPlugin(null, args.prefetch[0]);
+            const { PrefetchPlugin } = require('webpack');
+            const prefetchVal = new PrefetchPlugin(null, args.prefetch);
             if (this.opts.options && this.opts.options.plugins) {
                 this.opts.options.plugins.unshift(prefetchVal);
             } else {

lib/utils/cli-flags.js

@@ -99,6 +99,12 @@ module.exports = {
             type: String,
             description: 'Output location of the file generated by webpack',
         },
+        {
+            name: 'plugin',
+            group: ADVANCED_GROUP,
+            type: String,
+            description: 'Load a given plugin'
+        },
         {
             name: 'global',
             alias: 'g',
@@ -146,7 +152,6 @@ module.exports = {
         {
             name: 'prefetch',
             type: String,
-            multiple: true,
             group: ADVANCED_GROUP,
             description: 'Prefetch this request',
         },

test/config/basic/basic-config.test.js

@@ -6,7 +6,7 @@ const { run, extractSummary } = require('../../utils/test-utils');
 describe('basic config file', () => {
     it('is able to understand and parse a very basic configuration file', done => {
         const { stdout, stderr } = run(__dirname, ['-c', resolve(__dirname, 'webpack.config.js'), '--output', './binary/a.bundle.js']);
-        expect(stderr).toContain('duplicate flags found, defaulting to last set value');
+        expect(stderr).toContain('Duplicate flags found, defaulting to last set value');
         expect(stdout).not.toBe(undefined);
         const summary = extractSummary(stdout);
         const outputDir = 'basic/binary';

test/entry/defaults-index/entry-multi-args.test.js

@@ -23,7 +23,7 @@ describe('single entry flag index present', () => {
 
     it('finds default index file, compiles and overrides with flags successfully', done => {
         const { stdout, stderr } = run(__dirname, ['--output', 'bin/main.js']);
-        expect(stderr).toContain('duplicate flags found, defaulting to last set value');
+        expect(stderr).toContain('Duplicate flags found, defaulting to last set value');
         const summary = extractSummary(stdout);
         const outputDir = 'entry/defaults-index/bin';
 

test/help/__snapshots__/help-single-arg.test.js.snap

@@ -33,13 +33,14 @@ Options
   --progress string         Print compilation progress during build             
   --help                    Outputs list of supported flags                     
   -o, --output string       Output location of the file generated by webpack    
+  --plugin string           Load a given plugin                                 
   -g, --global string[]     Declares and exposes a global variable              
   -t, --target string       Sets the build target                               
   -w, --watch               Watch for files changes                             
   -h, --hot                 Enables Hot Module Replacement                      
   --debug                   Switch loaders to debug mode                        
   -s, --sourcemap string    Determine source maps to use                        
-  --prefetch string[]       Prefetch this request                               
+  --prefetch string         Prefetch this request                               
   -j, --json                Prints result as JSON                               
   -d, --dev                 Run development build                               
   -p, --prod                Run production build