Maintain multiple variant of a mobile app in single git repo | Mono-repo

1 Min. Read

Jan 26, 2021

It is not that difficult to maintain multiple variants of a mobile app you are working on in a single code-base.

Your current project directory structure might look like below

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my-app
├── __tests__
├── android
│   ├── app
│   └── gradle
└── ios
    ├── Pods
    ├── gig
    ├── gig.xcodeproj
    ├── gig.xcworkspace
    └── gigTests

Next you need to create a parent folder called my-app-repo (it can be something else in your case). Now, move your variants code folders into my-app-repo/packages which makes your repo look like below.

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$ my-app-repo
.
└── packages
    ├── myapp-var1
    │   ├── __tests__
    │   ├── android
    │   │   ├── app
    │   │   └── gradle
    │   └── ios
    │       ├── Pods
    │       ├── gig
    │       ├── gig.xcodeproj
    │       ├── gig.xcworkspace
    │       └── gigTests
    └── myapp-var2
        ├── __tests__
        ├── android
        │   ├── app
        │   └── gradle
        └── ios
            ├── Pods
            ├── gig_partner
            ├── gig_partner.xcodeproj
            ├── gig_partner.xcworkspace
            └── gig_partnerTests

Next, you need to make this folder a js package.

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$ yarn init my-app-repo

this will create package.json file.

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// package.json
{
  "private": true,
  "dependencies": {
    "react-devtools": "^4.10.1",
    "react-native": "^0.64.2"
  },
  "scripts": {
    "..": ".."
  },
  "workspaces": {
    "packages": [
      "packages/*"
    ],
    "nohoist": []
  }
}

What we are basically doing is adding concept of workspaces. You can now delegate commands to specific packages.

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  ,"scripts": {
    "var1-android": "yarn workspace var1 android",
    "var1-ios": "yarn workspace var1 ios",
    "var1-start": "yarn workspace var1 start",
    "var1-test": "yarn workspace var1 jest",
    "var1-lint": "yarn workspace var1 eslint .",
    "var1-podinstall": "yarn workspace var1 podinstall",

    "var2-android": "yarn workspace var2 android",
    "var2-ios": "yarn workspace var2 ios",
    "var2-start": "yarn workspace var2 start",
    "var2-test": "yarn workspace var2 jest",
    "var2-lint": "yarn workspace var2 eslint ."
    }

Configure Podfiles

Now you might need to replace a couple of lines of code

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require_relative '../node_modules/react-native/scripts/react_native_pods'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'

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require_relative '../../../node_modules/react-native/scripts/react_native_pods'
require_relative '../../../node_modules/@react-native-community/cli-platform-ios/native_modules'

Install packages

Simply yarn install will install all underlying packages

Maintain Multiple Variant Of A Mobile App In Single Git Repo | Mono Repo

Shiva Bhusal (Software Engineer) 1 Min. Read Jan 26, 2021
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