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ionic serve for an Ionic 1.0 app with Ionic 4 CLI

I first used the Ionic framework in 2015 and it has come a long way since then and it is now up to version 4. My app, My Day To-Do is a native iOS app however it’s UI is powered by HTML5 and more importantly Ionic 1 which involves using the Ionic CLI when debugging it’s UI. Recently, I updated the Ionic CLI and that meant that I couldn’t run my Ionic 1 code the way I used to. Hence In this post, I will share my solution of how to run Ionic 1 code base with the latest Ionic CLI i.e. 4.10.3.

Problem

After updating the Ionic CLI to 4.10.3 the first error I got when trying to debug my app UI using ionic serve was,
[WARN] Could not determine project type (project config: .\ionic.config.json).
The next error was
Error: ENOENT: no such file or directory, open ‘DirectoryPath\package.json’

Solution

To solve this problem, what I had to do was to create a new blank project with the latest Ionic CLI and simply copied those files from there as follows
  1. Start a new project with ionic start newApp tabs –type=ionic1  (Remember we need to create an Ionic 1 app)
  2. Open newApp/ionic.config.json and change the name property to the name of your app
  3. Copy the ionic.config.json file to your project directory which has the Ionic 1 wwwdirectory e.g. for My Day To-Do, the structure is mydaytodo/iOSFiles/  mydaytodo/www/ so I copied the ionic.config.json to mydaytodo/
  4. Copy the newApp/package.json  to the project directory as well which in my case would be mydaytodo/
  5. Next run the npm install command in the directory, what this will do is install some of the devDependancies defined in the package.json file
Once you have copied all those files, execute the ionic serve command on your console and your old project should run.
Now one more thing, one more thing before we wrap up this post. Once you run the ionic serve command after following the above steps, you may also see another error
Error: Cannot find module ‘DirectoryName/gulpfile.js’
As before to solve this, simply copy the gulpfile.js from the newApp directory generated before and that should solve your problem.
Lastly, remember you need to generate a new Ionic project using the command
ionic start newApp tabs –type=ionic1  
Hope this helps anyone coming up against this hurdle, like I did.

Some useful links

As usual, if you find any of my posts useful and want to support me, buy or even try one of our products and leave us a review on the app store.
My Day To-Do - Smart Task List
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My Day To-Do - Smart Task List
Developer: Bhuman Soni
Price: $2.99
My Day To-Do Lite - Task list
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My Day To-Do Lite - Task list
Developer: Bhuman Soni
Price: Free+
Snap! I was there
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Snap! I was there
Developer: Bhuman Soni
Price: Free

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