fix: support new dll plugin schema changes

Author: mzgoddard

package.json

@@ -74,6 +74,7 @@
     "node-object-hash": "^1.2.0",
     "pkg-dir": "^3.0.0",
     "rimraf": "^2.6.2",
+    "semver": "^5.6.0",
     "tapable": "^1.0.0-beta.5",
     "webpack-sources": "^1.0.1",
     "write-json-file": "^2.3.0"

tests/fixtures/plugin-dll-reference-scope/dll-4.27.js

@@ -0,0 +1 @@
+{"name":"dll_b44bb155bbcb19ee9c89","content":{"./fib.js":{"id":1,"buildMeta":{"providedExports":true}}}}

tests/fixtures/plugin-dll-reference-scope/dll-manifest-4.27.json

@@ -1,3 +1,6 @@
+var semver = require('semver');
+var webpackVersion = require('webpack/package.json').version;
+
 var DllReferencePlugin = require('webpack').DllReferencePlugin;
 var HardSourceWebpackPlugin = require('../../..');
 
@@ -19,7 +22,9 @@ module.exports = {
     new DllReferencePlugin({
       scope: '.',
       extensions: ['', '.js'],
-      manifest: require('./dll-manifest.json'),
+      manifest: semver.satisfies(webpackVersion, '>=4.27') ?
+        require('./dll-manifest-4.27.json') :
+        require('./dll-manifest.json'),
       // manifest: __dirname + '/dll-manifest.json',
     }),
   ],

tests/fixtures/plugin-dll-reference-scope/webpack.config.js

@@ -0,0 +1 @@
+{"name":"dll_b44bb155bbcb19ee9c89","content":{"./fib.js":{"id":1,"buildMeta":{"providedExports":true}}}}

tests/fixtures/plugin-dll-reference/dll-4.27.js

@@ -1,3 +1,6 @@
+var semver = require('semver');
+var webpackVersion = require('webpack/package.json').version;
+
 var DllReferencePlugin = require('webpack').DllReferencePlugin;
 var HardSourceWebpackPlugin = require('../../..');
 
@@ -18,7 +21,9 @@ module.exports = {
     }),
     new DllReferencePlugin({
       context: __dirname,
-      manifest: require('./dll-manifest.json'),
+      manifest: semver.satisfies(webpackVersion, '>=4.27') ?
+        require('./dll-manifest-4.27.json') :
+        require('./dll-manifest.json'),
       // manifest: __dirname + '/dll-manifest.json',
     }),
   ],