fix(fsProvider): return frame if source-map file not found (#8)

Author: kobiburnley

src/stackRetracer.ts

@@ -23,13 +23,17 @@ export class StackRetracer {
           return frame
         }
 
-        const sourceMap = await this.sourceMapProvider(frame.fileName)
+        try {
+          const sourceMap = await this.sourceMapProvider(frame.fileName)
 
-        if (!sourceMap) {
+          if (!sourceMap) {
+            return frame
+          }
+
+          return this.retraceFrame(frame, sourceMap)
+        } catch (e) {
           return frame
         }
-
-        return this.retraceFrame(frame, sourceMap)
       })
     )
   }

test/errorRetracer.test.ts

@@ -18,3 +18,21 @@ test("retraces stack trace in Error object", async () => {
       "fulfilled (webpack:///Users/mckomo/Projects/revenue-desk/node_modules/tslib/tslib.es6.js:68:41)"
   )
 })
+
+test("should not throw if file not found", async () => {
+  const error = new ErrorWithStack(ErrorStacks.webpackProduction2)
+
+  const {stack} = await errorRetracer.retrace(error)
+
+  expect(stack).toEqual(`pb (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:12:454)
+n (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:13:221)
+Th (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:37:309)
+tf (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:37:377)
+Object.findDOMNode (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:217:310)
+t.value (https://mui-qa.fyber.com/vendors~nfp.52a56cb27e6de6d78d1c.js:1:88992)
+qi (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:130:296)
+ui (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:133:320)
+<unknown> (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:158:377)
+unstable_runWithPriority (https://unpkg.com/react@16.8.6/umd/react.production.min.js:27:36)`
+  )
+})

test/fixtures/errorStacks.ts

@@ -19,5 +19,17 @@ export const ErrorStacks = {
     "    at e.<anonymous> (https://production.com/nfp.a77bec74f4ae50f3537e.js:1:87798)\n" +
     "    at https://production.com/vendors~nfp.dd54f49f907bdba83cf2.js:1:88129\n" +
     "    at Object.next (https://production.com/vendors~nfp.dd54f49f907bdba83cf2.js:1:88234)\n" +
-    "    at n (https://production.com/vendors~nfp.dd54f49f907bdba83cf2.js:1:87005)"
+    "    at n (https://production.com/vendors~nfp.dd54f49f907bdba83cf2.js:1:87005)",
+
+  webpackProduction2: `Invariant Violation: Minified React error #188; visit https://reactjs.org/docs/error-decoder.html?invariant=188 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. 
+    at pb (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:12:454)
+    at n (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:13:221)
+    at Th (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:37:309)
+    at tf (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:37:377)
+    at Object.findDOMNode (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:217:310)
+    at t.value (https://mui-qa.fyber.com/vendors~nfp.52a56cb27e6de6d78d1c.js:1:88992)
+    at qi (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:130:296)
+    at ui (https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:133:320)
+    at https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js:158:377
+    at unstable_runWithPriority (https://unpkg.com/react@16.8.6/umd/react.production.min.js:27:36)`
 }