styled-components-v3-to-v4-codemod

Codemod to for styled-components to migrate from v3to v4.

In version 4 of styled-components the .extends API will be removed. This codemod helps replace all of .extends usages to equivalent with styled() call instead. Also imports will be added if styled import is not present.

Before:

StyledComponent.extend``
 
StyledComponent.extend`color: red;`
 
StyledComponent.extend({ color: "red" })
 
StyledComponent.extend
 
StyledComponent.extend``.extend
 
StyledComponent.extend({ color: red }).extend
 
styled.div``.extend``
 
styled.div`color: red;`.extend`color: blue;`
 
styled.div({ color: "red"}).extend({ color: "blue"})
 
StyledComponent.withComponent('div').extend``
 
StyledComponent.withComponent('div').extend`color: red;`
 
StyledComponent.withComponent('div').extend()
 
StyledComponent.withComponent('div').extend({ color: red })
 
StyledComponent.extend().extend().extend().extend``
 
StyledComponent.extend``.extend().extend``.extend``

After:

import styled, { css } from 'styled-components'
 
styled(StyledComponent)``
 
styled(StyledComponent)`
  color: red;
`
 
styled(StyledComponent)({ color: 'red' })
 
styled(StyledComponent)
 
styled(styled(StyledComponent)``)
 
styled(styled(StyledComponent)({ color: red }))
 
styled(styled.div``)``
 
styled(
  styled.div`
    color: red;
  `
)`
  color: blue;
`
 
styled(styled.div({ color: 'red' }))({ color: 'blue' })
 
styled(StyledComponent.withComponent('div'))``
 
styled(StyledComponent.withComponent('div'))`
  color: red;
`
 
styled(StyledComponent.withComponent('div'))()
 
styled(StyledComponent.withComponent('div'))({ color: red })
 
styled(styled(styled(styled(StyledComponent)())())())``
 
styled(styled(styled(styled(StyledComponent)``)())``)``

Usage

Install babel-codemod npm i -g babel-codemod

Then install in root of your project npm install styled-components-v3-to-v4-codemod

Run it like that from node_modules hence:

codemod --plugin ./node_modules/styled-components-v3-to-v4-codemod/src/index.js ./src

Also you may like to pretty print it using prettier instead of recast

codemod --plugin ./node_modules/styled-components-v3-to-v4-codemod/src/index.js ./src --printer prettier

Remove styled-components-v3-to-v4-codemod from package.json

If there is any issues, let me know in the issues tab here at GitHub.

Limitations

There is no way to distinct from AST whether .extend identifier is related to styled-components or any other library/prototype etc. So if you know that there is some .extend function in your project that is not related to styled-components be aware and revert such changes manually diffing your code afterwards.

Integration with WebStorm/VS Code to do migration file by file

Preconditions:

npm i -g babel-core babel-codemod styled-components-v3-to-v4-codemod

WebStorm:

1. Go to Preferences -> External Tools -> Click plus to add tool.
2. Config:

Name: SC v3 to v4
Program: codemod
Arguments: -p /usr/local/lib/node_modules/styled-components-v3-to-v4-codemod/src/index.js$FilePathRelativeToProjectRoot$
Working directory: $ProjectFileDir$

In advanced settings:
Tick on: Sync file after execution

1. Open file you want to transform Right Click -> External Tools -> SC v3 to v4 -> Apply prettier/code formatting -> Enjoy
2. For even better experience go to. Preferences -> Keymap -> External Tools -> External Tools -> h to JSX -> Attach some key combination

VS Code:

1. Open command pallete
2. >Tasks: Configure Task
3. Press Up -> Select: Task from tasks.json template (or something like that)
4. Copy and paste this:

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "SC v3 to v4",
            "type": "shell",
            "command": "codemod -p /usr/local/lib/node_modules/styled-components-v3-to-v4-codemod/src/index.js ${file}"
        }
    ]
}

1. Open command pallete and ask it to open keybindings.json
2. Add this:

    {
        "key": "cmd+e",
        "command": "workbench.action.tasks.runTask",
        "args": "SC v3 to v4"
    }

1. Open any file and press cmd+e to apply codemod on file.
2. Or if you don't want to bloat your keybindings.json just open Command pallete and type. Run task -> Enter -> Find in the list "H to JSX" -> Enter (Usually will be on top)
3. Apply formatting and enjoy