Unable to resolve dependency tree error when ... - ItsMyCode

Solution 1: Ignore the peerDependencies ... The easiest way to fix the issue is to pass an additional parameter –legacy-peer-deps to npm install. Home»Javascript»UnabletoresolvedependencytreeerrorwheninstallingnpmpackagesTotal0Shares000000000TableofContents HideWhatisUnabletoresolvedependencytreeerrorwheninstallingnpmpackages?WhatiscausingtheERESOLVEunabletoresolvedependencytree?HowtofixUnabletoresolvedependencytreeerrorwheninstallingnpmpackages?Solution1:IgnorethepeerDependencies Solution2:Using–forceConclusionIfyouinstallthenodemodulesusingthelatestnode.jsandnpmversion7,youwillgetanerror Unabletoresolvedependencytreeerrorwheninstallingnpmpackages. Inthistutorial,wewilldiscusswhatexactly“Unabletoresolvedependencytreeerrorwheninstallingnpmpackages”isandhowtofixthiserror.WhatisUnabletoresolvedependencytreeerrorwheninstallingnpmpackages?Manydevelopersarefacingthisissuewhileinstallingthedependenciesinangularprojects.Asimilarissuewasobservedwhileinstallingthereact-facebook-loginpackagethroughnpmversion7.IfyouhaverecentlyupdatedtheNPMtothelatestversion(v7)andtriedtoupdateorinstallthedependenciesinyourproject,youmightgetadependencytreeerror. npmERR!ERESOLVEunabletoresolvedependencytree npmERR! npmERR!Whileresolving:[email protected] npmERR!Found:@angular/[email protected] npmERR!node_modules/@angular/common npmERR!@angular/common@"11.0.3"fromtherootproject npmERR! npmERR!Couldnotresolvedependency: npmERR!peer@angular/common@"^9.1.0||^10.0.0"from@agm/[email protected] npmERR!node_modules/@agm/core npmERR!@agm/core@"3.0.0-beta.0"fromtherootprojectWhatiscausingtheERESOLVEunabletoresolvedependencytree?Inthenewversionofnpm(v7),bydefault,npminstallwillfailwhenitencountersconflicting peerDependencies.Thisissuewasnothappeninginnpmversion3to6asitusedtoignorethepeerDependencieswhenbuildingapackagetreeultimately.TakealookattheofficialNPMdocumentationon legacy-peer-deps formoreinfoaboutpeerdependenciesinnpmv7.Thedifferencesbetweenthetwoarebelow–--legacy-peer-deps:ignoreall peerDependencies wheninstalling,inthestyleofnpmversion4throughversion6.--strict-peer-deps:failandaborttheinstallprocessforanyconflicting peerDependencies whenencountered.Bydefault,npmwillonlycrashfor peerDependencies conflictscausedbythedirectdependenciesoftherootproject.IfthepackagecannotbeinstalledbecauseofoverlystrictpeerDependenciesthatcollide,itprovidesawaytomoveforwardresolvingthesituation.Useoflegacy-peer-depsisnotrecommended,asitwillnotenforcethepeerDependenciescontractthatmeta-dependenciesmayrelyon.HowtofixUnabletoresolvedependencytreeerrorwheninstallingnpmpackages?Therearetwosolutionstoresolvethisissue.Letuslookateachofthoseindetail.Solution1:IgnorethepeerDependencies Theeasiestwaytofixtheissueistopassanadditionalparameter–legacy-peer-depstonpminstall.The--legacy-peer-depstellsthenpmtoignorethepeerdependenciesandcontinuetheinstallationofthepackage.Trythebelowcommandtoinstallthedependenciesforyourproject.npminstall--save--legacy-peer-depsYoucanalsosetthispermanentlybyaddingthisintoaconfigurationbyrunningthebelowcommand.npmconfigsetlegacy-peer-depstrueNote: Inthissolution,thepeerdependencieswillnotbeinstalledbydefault,evenifyouareusingthelatestversionofNPM.Solution2:Using–forceTheothersolutionistousethe--forceflag.The-for--forceargumentwillforcenpmtofetchremoteresourcesevenifalocalcopyexistsondisk.Step1: Deletethecurrentnode_modules.Youcanremoveitbyusingthebelowcommand.rm-rfnode_modulesStep2: Removethepackage-lock.jsonbyrunningthebelowcommandrmpackage-lock.jsonStep3: Clearthenpmcacheandperformthecleaninstallationwith--forceflagasshownbelow.npmcacheclean--force npminstall--forceByperformingtheabovesteps,youshouldresolvetheissuesuccessfully.ConclusionThe Unabletoresolvedependencytreeerrorwheninstallingnpmpackages occurswhenyouinstallthenodedependencieswiththelatestversionofNPM(v7).TheerrorisduetothestrictpeerDependenciesthatissetinthenpmversion7,andasofnpmv7,peerDependencies are installedbydefaultwhichresultsinconflictandcausestheissue.WecanresolvetheERESOLVEunabletoresolvedependencytreebyusingthe--forceflagwhileinstallingthedependencies,orwecanignorethepeerDependenciesbypassinganadditionalargument--legacy-peer-depsreportthisadTotal0SharesShare 0Tweet 0Share 0Share 0Share 0RelatedTagsdependency,npmLeaveaReplyCancelreplyYouremailaddresswillnotbepublished.Requiredfieldsaremarked*Comment*Name*Email*WebsiteSavemyname,email,andwebsiteinthisbrowserforthenexttimeIcomment. 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