diff --git a/ParseMap.js b/ParseMap.js
new file mode 100644
index 0000000000000000000000000000000000000000..fb2a8f8668490ed1108bdc4e663847f48ca90de2
--- /dev/null
+++ b/ParseMap.js
@@ -0,0 +1,15 @@
+/**
+ * npm install source-map
+ * node ParseMap.js
+ */ 
+var sourceMap = require('source-map');
+var fs = require('fs');
+
+var rawSourceMap = JSON.parse(fs.readFileSync('test.bundle.map', 'utf8'));
+
+const whatever = sourceMap.SourceMapConsumer.with(rawSourceMap, null, consumer => {
+  console.log(consumer.originalPositionFor({
+    line: 577,
+    column: 2554
+  }));
+});
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000000000000000000000000000000000000..d86291f0d31f0c2269b341a21357c88edff10512
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,11 @@
+{
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "source-map": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.2.tgz",
+      "integrity": "sha512-NDJB/R2BS7YJG0tP9SbE4DKwKj1idLT5RJqfVYZ7dreFX7wulZT3xxVhbYKrQo9n0JkRptl51TrX/5VK3HodMA=="
+    }
+  }
+}