Locker service and lightning web components











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Is there any documentation yet on how locker service fits in with lightning web components? If yes,




  1. What are the implications of locker service on lightning web components?

  2. What are locker service guidelines to work with lightning web components?






locker-service lightning-web-components lwc







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    up vote
    5
    down vote

    favorite
    3












    Is there any documentation yet on how locker service fits in with lightning web components? If yes,




    1. What are the implications of locker service on lightning web components?

    2. What are locker service guidelines to work with lightning web components?






    locker-service lightning-web-components lwc







    share|improve this question


























      up vote
      5
      down vote

      favorite
      3









      up vote
      5
      down vote

      favorite
      3






      3





      Is there any documentation yet on how locker service fits in with lightning web components? If yes,




      1. What are the implications of locker service on lightning web components?

      2. What are locker service guidelines to work with lightning web components?






      locker-service lightning-web-components lwc







      share|improve this question















      Is there any documentation yet on how locker service fits in with lightning web components? If yes,




      1. What are the implications of locker service on lightning web components?

      2. What are locker service guidelines to work with lightning web components?






      locker-service lightning-web-components lwc




      locker-service lightning-web-components lwc






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 12 hours ago









      Mohith Shrivastava

      59.3k795136




      59.3k795136










      asked 12 hours ago









      codeyinthecloud

      2,788322




      2,788322






















          1 Answer
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          up vote
          5
          down vote



          accepted










          If you have access to the spring19 pre release org you can explore the documents on the "lightning web components security via locker service" in developer guide. The docs are available for lockerservice @ (YourDomain.lightning.force.com/docs/component-library/documentation/lwc/lwc.security_locker_service)



          Lets highlight some key points from document



          DOM Access Containment



          You cannot use document.querySelector() and the syntax to access the shadow DOM will be this.template.querySelector()



          Secure Wrappers



          Still you will need SecureWindow, SecureDocument , SecureObject (All these were available in aura locker). On top of it you also have new secure elements SecureLightningElement and SecureTemplate.



          SecureLightningElement is a base class that every lightning web component extends from .



          SecureTemplate is the shadowRoot node .The docs list which APIS are not supported .



          Restrict access to Global Variables



          Global variables like $Aura,$A, sfdc and sforce are all restricted .



          CSP Support



          All Javascript libraries needs to be referenced from static resource and all external images , fonts and CSS needs to use HTTPS .



          Except for IE11 ,the locker security principles are applied to the lightning web components as well .






          share|improve this answer



















          • 2




            I was about to post the answer but you beat me! Thanks
            – codeyinthecloud
            12 hours ago











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          1 Answer
          1






          active

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          active

          oldest

          votes








          up vote
          5
          down vote



          accepted










          If you have access to the spring19 pre release org you can explore the documents on the "lightning web components security via locker service" in developer guide. The docs are available for lockerservice @ (YourDomain.lightning.force.com/docs/component-library/documentation/lwc/lwc.security_locker_service)



          Lets highlight some key points from document



          DOM Access Containment



          You cannot use document.querySelector() and the syntax to access the shadow DOM will be this.template.querySelector()



          Secure Wrappers



          Still you will need SecureWindow, SecureDocument , SecureObject (All these were available in aura locker). On top of it you also have new secure elements SecureLightningElement and SecureTemplate.



          SecureLightningElement is a base class that every lightning web component extends from .



          SecureTemplate is the shadowRoot node .The docs list which APIS are not supported .



          Restrict access to Global Variables



          Global variables like $Aura,$A, sfdc and sforce are all restricted .



          CSP Support



          All Javascript libraries needs to be referenced from static resource and all external images , fonts and CSS needs to use HTTPS .



          Except for IE11 ,the locker security principles are applied to the lightning web components as well .






          share|improve this answer



















          • 2




            I was about to post the answer but you beat me! Thanks
            – codeyinthecloud
            12 hours ago















          up vote
          5
          down vote



          accepted










          If you have access to the spring19 pre release org you can explore the documents on the "lightning web components security via locker service" in developer guide. The docs are available for lockerservice @ (YourDomain.lightning.force.com/docs/component-library/documentation/lwc/lwc.security_locker_service)



          Lets highlight some key points from document



          DOM Access Containment



          You cannot use document.querySelector() and the syntax to access the shadow DOM will be this.template.querySelector()



          Secure Wrappers



          Still you will need SecureWindow, SecureDocument , SecureObject (All these were available in aura locker). On top of it you also have new secure elements SecureLightningElement and SecureTemplate.



          SecureLightningElement is a base class that every lightning web component extends from .



          SecureTemplate is the shadowRoot node .The docs list which APIS are not supported .



          Restrict access to Global Variables



          Global variables like $Aura,$A, sfdc and sforce are all restricted .



          CSP Support



          All Javascript libraries needs to be referenced from static resource and all external images , fonts and CSS needs to use HTTPS .



          Except for IE11 ,the locker security principles are applied to the lightning web components as well .






          share|improve this answer



















          • 2




            I was about to post the answer but you beat me! Thanks
            – codeyinthecloud
            12 hours ago













          up vote
          5
          down vote



          accepted







          up vote
          5
          down vote



          accepted






          If you have access to the spring19 pre release org you can explore the documents on the "lightning web components security via locker service" in developer guide. The docs are available for lockerservice @ (YourDomain.lightning.force.com/docs/component-library/documentation/lwc/lwc.security_locker_service)



          Lets highlight some key points from document



          DOM Access Containment



          You cannot use document.querySelector() and the syntax to access the shadow DOM will be this.template.querySelector()



          Secure Wrappers



          Still you will need SecureWindow, SecureDocument , SecureObject (All these were available in aura locker). On top of it you also have new secure elements SecureLightningElement and SecureTemplate.



          SecureLightningElement is a base class that every lightning web component extends from .



          SecureTemplate is the shadowRoot node .The docs list which APIS are not supported .



          Restrict access to Global Variables



          Global variables like $Aura,$A, sfdc and sforce are all restricted .



          CSP Support



          All Javascript libraries needs to be referenced from static resource and all external images , fonts and CSS needs to use HTTPS .



          Except for IE11 ,the locker security principles are applied to the lightning web components as well .






          share|improve this answer














          If you have access to the spring19 pre release org you can explore the documents on the "lightning web components security via locker service" in developer guide. The docs are available for lockerservice @ (YourDomain.lightning.force.com/docs/component-library/documentation/lwc/lwc.security_locker_service)



          Lets highlight some key points from document



          DOM Access Containment



          You cannot use document.querySelector() and the syntax to access the shadow DOM will be this.template.querySelector()



          Secure Wrappers



          Still you will need SecureWindow, SecureDocument , SecureObject (All these were available in aura locker). On top of it you also have new secure elements SecureLightningElement and SecureTemplate.



          SecureLightningElement is a base class that every lightning web component extends from .



          SecureTemplate is the shadowRoot node .The docs list which APIS are not supported .



          Restrict access to Global Variables



          Global variables like $Aura,$A, sfdc and sforce are all restricted .



          CSP Support



          All Javascript libraries needs to be referenced from static resource and all external images , fonts and CSS needs to use HTTPS .



          Except for IE11 ,the locker security principles are applied to the lightning web components as well .







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 12 hours ago

























          answered 12 hours ago









          Mohith Shrivastava

          59.3k795136




          59.3k795136








          • 2




            I was about to post the answer but you beat me! Thanks
            – codeyinthecloud
            12 hours ago














          • 2




            I was about to post the answer but you beat me! Thanks
            – codeyinthecloud
            12 hours ago








          2




          2




          I was about to post the answer but you beat me! Thanks
          – codeyinthecloud
          12 hours ago




          I was about to post the answer but you beat me! Thanks
          – codeyinthecloud
          12 hours ago


















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