feat: support {String} patterns (#155)

README.md

@@ -27,6 +27,9 @@ npm install --save-dev copy-webpack-plugin
 A pattern looks like:
 `{ from: 'source', to: 'dest' }`
 
+Or, in the simple case of just a `from` with the default destination, you can use a string primitive instead of an object:
+`'source'`
+
 #### Pattern properties:
 
 | Name | Required | Default     | Details                                                 |
@@ -67,6 +70,9 @@ module.exports = {
             // {output}/file.txt
             { from: 'from/file.txt' },
 
+            // equivalent
+            'from/file.txt',
+
             // {output}/to/file.txt
             { from: 'from/file.txt', to: 'to/file.txt' },
 

src/preProcessPattern.js

@@ -12,7 +12,9 @@ export default function preProcessPattern(globalRef, pattern) {
     const {info, debug, warning, context,
         fileDependencies, contextDependencies, compilation} = globalRef;
 
-    pattern = _.cloneDeep(pattern);
+    pattern = typeof pattern === 'string' ? {
+        from: pattern
+    } : _.cloneDeep(pattern);
     pattern.to = pattern.to || '';
     pattern.context = pattern.context || context;
     if (!path.isAbsolute(pattern.context)) {

tests/index.js

@@ -1053,6 +1053,25 @@ describe('apply function', () => {
         });
     });
 
+    describe('with simple string patterns', () => {
+        it('can move multiple files', (done) => {
+            runEmit({
+                expectedAssetKeys: [
+                    'binextension.bin',
+                    'file.txt',
+                    'noextension'
+                ],
+                patterns: [
+                    'binextension.bin',
+                    'file.txt',
+                    'noextension'
+                ]
+            })
+            .then(done)
+            .catch(done);
+        });
+    });
+
     describe('options', () => {
         describe('ignore', () => {
             it('ignores files when from is a file', (done) => {