danielo-mod

Danielo codemods

This is a collection of codemods designed to blend any javascript codebase to my tyrannical desires. Codemods here will re-factor pieces of javascript code to adhere to certain programming practices that I think are better than others. Please check the documentation for each codemod to understand what it is supposed to do.

Executing codemods

You don't need to install this library to force your code to follow my fantastic impositions, all you need is to have npm installed and run the following command

npx danielo-mod mod-name --firstArgument=value --parser=flow your/source/code/path

If you don't use flow, just remove --parser=flow

Local execution

If you want to execute a codemod locally (you have this repo cloned and just want to run from here) you can do it providing all the required parameters to jscodeshift:

yarn jscodeshift -t src/mods/transform-file.ts /full/path/to/target-files

There is a convenience script if you want to run a typescript transformation (provides correct parser and extensions list):

yarn execute-ts -t src/mods/transform-file.ts /full/path/to/target-files

CODEMODS

named-function-params

Replace all functions (with a name) definitions and calls to take named arguments instead of positional ones. Turns:

const add = (a,b) => a + b
add(1,2)

into:

// --maxArgs=1 or --functionName=add
const add = ({ a, b }) => a + b
add({a: 1, b: 2 })

Arguments

It accepts either :

• --functionName=name where name is the function name you want to refactor
• --maxArgs=2 where 2 can be any number that you want to use as threshold to decide if a function needs to be refactored or not

react-to-object

Turns an array of react components into an array of Objects. This only works for literal lists of react components:

[
    <MyStuff value="hello" onClick={() => console.log('clicked')}>
]

into:

[{
    value: "hello",
    onClick: () => console.log('clicked')
}]

Arguments

It accepts:

• --name=component_name where component name is the component you want to translate to objects

add-react-property

Adds a new react property if it does not exist previously. Useful if you want to deprecate default values, so you can add the default value to all existing invocdations.

Arguments

• --name=component_name the name of the component you want to add properties to
• --propName=name the name of the property you want to add
• --propValue=value the value of the property you want to add