declarativeNetRequest.isRegexSupported

Checks if a regular expression is supported as a declarativeNetRequest.RuleCondition.regexFilter rule condition.

Syntax

let count = browser.declarativeNetRequest.isRegexSupported(
    regexOptions                // object
);

An object containing the regular expression to check.

isCaseSensitive Optional: boolean Whether the regex specified is case sensitive. Default is true.
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.

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 if isSupported is false.

If the request fails, the promise is rejected with an error message.

BCD tables only load in the browser