1 files changed, 45 insertions, 0 deletions
diff --git a/node_modules/vue/src/server/bundle-renderer/source-map-support.js b/node_modules/vue/src/server/bundle-renderer/source-map-support.js
new file mode 100644
index 00000000..1010532e
--- /dev/null
+++ b/node_modules/vue/src/server/bundle-renderer/source-map-support.js
@@ -0,0 +1,45 @@
+/* @flow */
+
+const SourceMapConsumer = require('source-map').SourceMapConsumer
+
+const filenameRE = /\(([^)]+\.js):(\d+):(\d+)\)$/
+
+export function createSourceMapConsumers (rawMaps: Object) {
+  const maps = {}
+  Object.keys(rawMaps).forEach(file => {
+    maps[file] = new SourceMapConsumer(rawMaps[file])
+  })
+  return maps
+}
+
+export function rewriteErrorTrace (e: any, mapConsumers: {
+  [key: string]: SourceMapConsumer
+}) {
+  if (e && typeof e.stack === 'string') {
+    e.stack = e.stack.split('\n').map(line => {
+      return rewriteTraceLine(line, mapConsumers)
+    }).join('\n')
+  }
+}
+
+function rewriteTraceLine (trace: string, mapConsumers: {
+  [key: string]: SourceMapConsumer
+}) {
+  const m = trace.match(filenameRE)
+  const map = m && mapConsumers[m[1]]
+  if (m != null && map) {
+    const originalPosition = map.originalPositionFor({
+      line: Number(m[2]),
+      column: Number(m[3])
+    })
+    if (originalPosition.source != null) {
+      const { source, line, column } = originalPosition
+      const mappedPosition = `(${source.replace(/^webpack:\/\/\//, '')}:${String(line)}:${String(column)})`
+      return trace.replace(filenameRE, mappedPosition)
+    } else {
+      return trace
+    }
+  } else {
+    return trace
+  }
+}