fix: reduce memory usage (#145)

webpack-contrib · Sep 6, 2019 · 815e533 · 815e533
1 parent 42a0f9c
commit 815e533
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Showing 2 changed files with 11 additions and 11 deletions.
diff --git a/src/TaskRunner.js b/src/TaskRunner.js
@@ -41,10 +41,6 @@ export default class TaskRunner {
   }
 
   async run(tasks) {
-    if (tasks.length === 0) {
-      return Promise.resolve([]);
-    }
-
     if (this.numberWorkers > 1 && tasks.length > 1) {
       this.worker = new Worker(workerPath, { numWorkers: this.numberWorkers });
     }

diff --git a/src/index.js b/src/index.js
@@ -170,11 +170,6 @@ class TerserPlugin {
     };
 
     const optimizeFn = async (compilation, chunks) => {
-      const taskRunner = new TaskRunner({
-        cache: this.options.cache,
-        parallel: this.options.parallel,
-      });
-
       const processedAssets = new WeakSet();
       const tasks = [];
 
@@ -267,9 +262,18 @@ class TerserPlugin {
           }
         });
 
-      const completedTasks = await taskRunner.run(tasks);
+      let completedTasks = [];
+
+      if (tasks.length > 0) {
+        const taskRunner = new TaskRunner({
+          cache: this.options.cache,
+          parallel: this.options.parallel,
+        });
+
+        completedTasks = await taskRunner.run(tasks);
 
-      await taskRunner.exit();
+        await taskRunner.exit();
+      }
 
       completedTasks.forEach((completedTask, index) => {
         const { file, input, inputSourceMap, commentsFile } = tasks[index];