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I am looking for some method which can convert pre built Aura components to LWC open source.

is there any tool or simple convert method exist?

I wish I don't have to do it one by one.

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  • There is no such tools exist as of now, it needs to be done manually
    – Santanu Boral
    Oct 9, 2019 at 5:28
  • I see, I wonder if I can refer web page which explaining the procedure. Such a page also doesn't exist?
    – Hayato
    Oct 9, 2019 at 5:55

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Migrate Aura Components to Lightning Web Components contains the full documentation on undertaking this

Migration Strategy mentions that you're not likely to want to convert line-by-line - but, rather evaluate your design and how it would work best considering the differences in the two models.

The programming model for Lightning Web Components is fundamentally different than the model for Aura components. Migrating a component is not a line-by-line conversion, and it's a good opportunity to revisit your component's design. Before you migrate an Aura component, evaluate the component’s attributes, interfaces, structures, patterns, and data flow

After migrating one component, you'll be in a better position to determine whether it makes sense for you and your org to:

  • Undertake a larger migration effort
  • Use Lightning web components for new components only
  • Stick with Aura components for now

It then has specific pages dedicated to migrating the various parts:

Of the above, some are more straightforward than others. As an example, apex methods have no syntax differences - but, Lightning Web Components can also use the JavaScript @wire decorator to wrap calls to an Apex method or the User Interface API

Likewise, there's other differences to consider

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  • Awesome. I didn't know this.
    – Hayato
    Oct 10, 2019 at 1:01
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I recently built a tool to do this:

https://aura-to-lwc.herokuapp.com/

There are still many bugs, but at the same time it does provide some of the necessary features. It can be performed in two ways:

  • Login to your org, select which Aura components to convert, and download the converted LWC components
  • Copy & paste your Aura code into the playground and click Convert button to see the converted LWC code immediately
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  • HI FlyGuy, and welcome to SFSE. Please read up on the guidelines on self promotion. You are doing a good job disclosing your affiliation, but if all your posts here are self-promotion, that can still cause you to be identified as a spammer in the long run. Sounds like you have some good knowledge to share on tags such as [lwc] and others related to lightning. Consider browsing for some questions you can help out on where your tool doesn't apply!
    – Adrian Larson ♦
    Mar 4, 2021 at 14:39

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