File indexing completed on 2024-11-24 04:54:31

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 const I = (x) => x
 
 /**
  * Same as filterPredicate but will log if there is a LOG_OUTPUT env variable
  */
 const filterPredicateWithPossibleLogging = (rule, filterPredicate = I) => {
   const result = filterPredicate(rule)
   if (process.env['LOG_OUTPUT'] && !result) {
     console.log('Filtering out rule: ', rule)
   }
   return result
 }
 
 /**
  * Mapping rule which reformats rules
  */
 const mapRule = (rule) => {
   if (rule === '||imasdk.googleapis.com^$third-party') {
     return '||imasdk.googleapis.com^$third-party,explicitcancel'
   }
   if (rule === '/ima3.js') {
     return '/ima3.js$explicitcancel'
   }
   return rule
 }
 
 /**
  * Given a list of inputs returns a filtered list of rules that should be used.
  *
  * @param input {string} - ABP filter syntax to filter
  * @return A better filter list
  */
 const sanitizeABPInput = (input, filterPredicate = I) =>
   input.split('\n')
     .filter((rule) =>
       filterPredicateWithPossibleLogging(rule, filterPredicate))
     .map(mapRule)
     // TODO: This can be removed a few versions after 0.62.x.
     // It was just added to be backwards compatible with 0.61.x.
     .concat(extraConcatRules)
     .join('\n')
 
 /**
  * Extra rules that should be appended when sanitizing ABP input
  */
 const extraConcatRules = [
   '||imasdk.googleapis.com/$third-party',
   '^ima3.js'
 ]
 
 module.exports = {
   sanitizeABPInput,
   extraConcatRules
 }