Make pdf.js render CJK characters

As mentioned in
https://github.com/wojtekmaj/react-pdf/blob/master/README.md,
pdf.js needs the bundled cMaps files to work.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/62152

1 files changed, 8 insertions, 0 deletions

diff --git a/config/webpack.config.js b/config/webpack.config.js
index cd793743eb7..4b6a9e4b99e 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.js
@@ -6,6 +6,7 @@ const StatsWriterPlugin = require('webpack-stats-plugin').StatsWriterPlugin;
 const CompressionPlugin = require('compression-webpack-plugin');
 const MonacoWebpackPlugin = require('monaco-editor-webpack-plugin');
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+const CopyWebpackPlugin = require('copy-webpack-plugin');
 
 const ROOT_PATH = path.resolve(__dirname, '..');
 const CACHE_PATH = process.env.WEBPACK_CACHE_PATH || path.join(ROOT_PATH, 'tmp/cache');
@@ -278,6 +279,13 @@ module.exports = {
       }
     }),
 
+    new CopyWebpackPlugin([
+      {
+        from: path.join(ROOT_PATH, 'node_modules/pdfjs-dist/cmaps/'),
+        to: path.join(ROOT_PATH, 'public/assets/webpack/cmaps/'),
+      },
+    ]),
+
     // compression can require a lot of compute time and is disabled in CI
     IS_PRODUCTION && !NO_COMPRESSION && new CompressionPlugin(),