blob-override

The blob-override snippet overrides specific parts of the Blob injected in web-pages. We override the blob constructor in a way we can intercept calls and change the blob content.

Parameters

Name	Description	Mandatory	Default value
search	The string or regex pattern to match in the blob content.	Yes	n.a.
replacement	The string to replace the matched pattern with.	No	''
needle	An optional string or regex to check in the * blob parts before applying the replacement.	No	''

Filter examples

Filter	Result
blob-override '/config = \\{[^}]*\\}/' 'config = {}' '/Sponsored/'	Will override the config content matched via regex pattern with an empty object only if the blob contains also the string Sponsored.

Debugging

The following table contains messages you'll find useful during debugging:

Message	When the message occurs	Definition
info - Wrapped Blob constructor in context	After we have wrapped the window.Blob API.	From this moment on the blob prototype is intercepted by us.
success - Replaced: search → replacement FILTER: blob-override params	After we have matched and replaced the blob content.	The filter successfully hit.