Transform a string using multiple regex

replaces.js

/*
  Transform a string using multiple regex
  @customfunction
*/
function replaces(operators,operands) {
  return operators[0].map ? 
    operators.reduce((a,b) => replaces(b,a), operands)
  :  operands.replace(new RegExp(operators[0]), operators[1])
}


function __TESTS(){ __TEST_0_replaces(), __TEST_1_replaces()}
function __TEST_0_replaces(){ Logger.log(replaces(['hello', 'tests'],'hello world')) }
function __TEST_1_replaces(){ Logger.log(replaces([['hello', 'tests'],['world','pass']],'hello world')) }