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authorkumavis <aaron@kumavis.me>2018-10-15 13:14:25 +0800
committerkumavis <aaron@kumavis.me>2018-10-15 13:14:25 +0800
commit70c45ae8be4827415c218a8b527fd0a6d420a7ba (patch)
tree84117998d0495be37bb7c47225f5f940c95fdd0f
parent5504c8b9659f9345bb6d1b38d4d5ff91db1b6611 (diff)
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enable fetch debugging
-rw-r--r--app/scripts/background.js3
-rw-r--r--app/scripts/lib/setupFetchDebugging.js34
2 files changed, 37 insertions, 0 deletions
diff --git a/app/scripts/background.js b/app/scripts/background.js
index 0343e134c..509a0001d 100644
--- a/app/scripts/background.js
+++ b/app/scripts/background.js
@@ -2,6 +2,9 @@
* @file The entry point for the web extension singleton process.
*/
+// this needs to run before anything else
+require('./lib/setupFetchDebugging')()
+
const urlUtil = require('url')
const endOfStream = require('end-of-stream')
const pump = require('pump')
diff --git a/app/scripts/lib/setupFetchDebugging.js b/app/scripts/lib/setupFetchDebugging.js
new file mode 100644
index 000000000..dd87b65a6
--- /dev/null
+++ b/app/scripts/lib/setupFetchDebugging.js
@@ -0,0 +1,34 @@
+module.exports = setupFetchDebugging
+
+//
+// This is a utility to help resolve cases where `window.fetch` throws a
+// `TypeError: Failed to Fetch` without any stack or context for the request
+// https://github.com/getsentry/sentry-javascript/pull/1293
+//
+
+function setupFetchDebugging() {
+ if (!global.fetch) return
+ const originalFetch = global.fetch
+
+ global.fetch = wrappedFetch
+
+ async function wrappedFetch(...args) {
+ const initialStack = getCurrentStack()
+ try {
+ return await originalFetch.call(window, ...args)
+ } catch (err) {
+ console.warn('FetchDebugger - fetch encountered an Error', err)
+ console.warn('FetchDebugger - overriding stack to point of original call')
+ err.stack = initialStack
+ throw err
+ }
+ }
+}
+
+function getCurrentStack() {
+ try {
+ throw new Error('Fake error for generating stack trace')
+ } catch (err) {
+ return err.stack
+ }
+}