Add minify debug env var to investigate minifier bugs (#31417)

vercel · Nov 15, 2021 · 9da8d65 · 9da8d65
1 parent 0afc1d2
commit 9da8d65
Showing 1 changed file with 15 additions and 2 deletions.
diff --git a/packages/next/build/webpack/plugins/terser-webpack-plugin/src/index.js b/packages/next/build/webpack/plugins/terser-webpack-plugin/src/index.js
@@ -47,13 +47,14 @@ function buildError(error, file) {
   return new Error(`${file} from Terser\n${error.message}`)
 }
 
+const debugMinify = process.env.NEXT_DEBUG_MINIFY
+
 export class TerserPlugin {
   constructor(options = {}) {
-    const { cacheDir, terserOptions = {}, parallel, swcMinify } = options
+    const { terserOptions = {}, parallel, swcMinify } = options
 
     this.options = {
       swcMinify,
-      cacheDir,
       parallel,
       terserOptions,
     }
@@ -128,6 +129,18 @@ export class TerserPlugin {
               numberOfAssetsForMinify += 1
             }
 
+            if (debugMinify && debugMinify === '1') {
+              console.dir(
+                {
+                  name,
+                  source: source.source().toString(),
+                },
+                {
+                  breakLength: Infinity,
+                  maxStringLength: Infinity,
+                }
+              )
+            }
             return { name, info, inputSource: source, output, eTag }
           })
       )