declarativeNetRequest.isRegexSupported
Checks if a regular expression is supported as a declarativeNetRequest.RuleCondition
.regexFilter
rule condition.
Syntax
js
let count = browser.declarativeNetRequest.isRegexSupported(
regexOptions // object
);
Parameters
regexOptions
-
An object containing the regular expression to check.
isCaseSensitive
Optional-
boolean
Whether the regex specified is case sensitive. Default istrue
. regex
-
string
The regular expression to check. requireCapturing
Optional-
boolean
Whether the regex specified requires capturing. Capturing is only required for redirect rules that specify a regexSubstitution action. The default is false.
Return value
A Promise
that fulfills with an object with these properties:
isSupported
-
boolean
Whether the regular expression is supported. reason
Optional-
string
Specifies the reason why the regular expression is not supported. Possible values are"syntaxError"
and"memoryLimitExceeded"
. Only provided ifisSupported
is false.
If the request fails, the promise is rejected with an error message.
Examples
Browser compatibility
BCD tables only load in the browser