Refactoringimprovesyourcodewithoutchangingitsbehavior.Withrefactoring,thebestapproachistoapplysmalltargetedchangestoacodebase.Insteadofdoingahugesweepingchangetoyourcode,refactoringisbetterasalong-termandcontinuousenterprise.RefactoringTypeScriptexplainshowtospotbugsandremovethemfromyourcode.You’llstartbyseeinghowwordyconditionals,methods,andnullchecksmakecodeunhealthyandunstable.Whetheritisidentifyingmessynestedconditionalsorremovingunnecessarymethods,thisbookwillshowvarioustechniquestoavoidthesepitfallsandwritecodethatiseasiertounderstand,maintain,andtest.Bytheendofthebook,you’llhavelearnedsomeofthemaincausesofunhealthycode,tipstoidentifythemandtechniquestoaddressthem.