make test for Source.buffer more strict

webpack · Jan 17, 2019 · 6e383cf · 6e383cf
1 parent aaf85db
commit 6e383cf
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/Compiler.js b/lib/Compiler.js
@@ -366,7 +366,7 @@ class Compiler extends Tapable {
 							// get the binary (Buffer) content from the Source
 							/** @type {Buffer} */
 							let content;
-							if (source.buffer) {
+							if (typeof source.buffer === "function") {
 								content = source.buffer();
 							} else {
 								const bufferOrString = source.source();