Values of this type are objects. They contain these properties:

extensionPath Optional

A string. The path relative to the extension directory. Should start with '/'.

regexSubstitution Optional

A string. The substitution pattern for rules that specify a regexFilter. The first match of regexFilter within the URL is replaced with this pattern. Within regexSubstitution, backslash-escaped digits (\1 to \9) are used to insert the corresponding capture groups. \0 refers to the entire matching text.

transform Optional

declarativeNetRequest.URLTransform. The URL transformations to perform.

url Optional

A string. The redirect URL. Redirects to JavaScript URLs are not allowed.