webpack
diff --git a/‎lib/dependencies/JsonExportsDependency.js
Lines changed: 3 additions & 7 deletions b/‎lib/dependencies/JsonExportsDependency.js
Lines changed: 3 additions & 7 deletions
diff --git a/‎lib/json/JsonData.js
Lines changed: 8 additions & 0 deletions b/‎lib/json/JsonData.js
Lines changed: 8 additions & 0 deletions
@@ -49,8 +49,7 @@ class JsonExportsDependency extends NullDependency {
 	 */
 	constructor(data) {
 		super();
-		this.data = data && data.get();
-		this._hashUpdate = undefined;
+		this.data = data;
 	}
 
 	get type() {
@@ -64,7 +63,7 @@ class JsonExportsDependency extends NullDependency {
 	 */
 	getExports(moduleGraph) {
 		return {
-			exports: getExportsFromData(this.data),
+			exports: getExportsFromData(this.data && this.data.get()),
 			dependencies: undefined
 		};
 	}
@@ -76,10 +75,7 @@ class JsonExportsDependency extends NullDependency {
 	 * @returns {void}
 	 */
 	updateHash(hash, context) {
-		if (this._hashUpdate === undefined) {
-			this._hashUpdate = this.data ? JSON.stringify(this.data) : "undefined";
-		}
-		hash.update(this._hashUpdate);
+		this.data.updateHash(hash);
 	}
 
 	serialize(context) {
 
@@ -24,6 +24,14 @@ class JsonData {
 		}
 		return this._data;
 	}
+
+	updateHash(hash) {
+		if (this._buffer === undefined && this._data !== undefined) {
+			this._buffer = Buffer.from(JSON.stringify(this._data));
+		}
+
+		if (this._buffer) return hash.update(this._buffer);
+	}
 }
 
 register(JsonData, "webpack/lib/json/JsonData", null, {
Original file line number	Diff line number	Diff line change
`@@ -24,6 +24,14 @@ class JsonData {`
`24`	`24`	`}`
`25`	`25`	`return this._data;`
`26`	`26`	`}`
	`27`	`+`
	`28`	`+ updateHash(hash) {`
	`29`	`+ if (this._buffer === undefined && this._data !== undefined) {`
	`30`	`+ this._buffer = Buffer.from(JSON.stringify(this._data));`
	`31`	`+ }`
	`32`	`+`
	`33`	`+ if (this._buffer) return hash.update(this._buffer);`
	`34`	`+ }`
`27`	`35`	`}`
`28`	`36`
`29`	`37`	`register(JsonData, "webpack/lib/json/JsonData", null, {`