https://github.com/cdlewis/idx-to-optional-chaining

JSCodeShift codemod that transforms usage of idx to the draft optional chaining standard.
https://github.com/cdlewis/idx-to-optional-chaining

codemod flow idx javascript jscodeshift optional-chaining typescript

Last synced: about 1 month ago
JSON representation

JSCodeShift codemod that transforms usage of idx to the draft optional chaining standard.

• Host: GitHub
• URL: https://github.com/cdlewis/idx-to-optional-chaining
• Owner: cdlewis
• Created: 2019-01-20T10:52:50.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2023-01-05T10:15:19.000Z (about 2 years ago)
• Last Synced: 2024-09-18T03:36:14.495Z (5 months ago)
• Topics: codemod, flow, idx, javascript, jscodeshift, optional-chaining, typescript
• Language: JavaScript
• Homepage:
• Size: 959 KB
• Stars: 19
• Watchers: 3
• Forks: 3
• Open Issues: 11
• Metadata Files:
  • Readme: readme.md

Awesome Lists containing this project

• awesome-codemods - idx-to-optional-chaining - JSCodeShift codemod that transforms usage of idx to the draft optional chaining standard. (ESNext)

README

        
# idx to optional chaining [![Build Status](https://travis-ci.com/cdlewis/idx-to-optional-chaining.svg?branch=master)](https://travis-ci.com/cdlewis/idx-to-optional-chaining)

Facebook's [idx](https://github.com/facebookincubator/idx) was a useful helper prior to the [optional chaining](https://github.com/tc39/proposal-optional-chaining) maturing as a standard because it

played nicely with Flow. But now optional chaining is stage 4 and has Flow/Typescript support. This codemod

will convert transform most usages of idx.

## Usage

```console

foo@bar:~$ git clone [email protected]:cdlewis/idx-to-optional-chaining.git

foo@bar:~$ npm install -g jscodeshift

foo@bar:~$ jscodeshift -t idx-to-optional-chaining/index.js file-to-transform.js

```

## Example

Before:

```js

import idx from "idx";

let a = idx(a, _ => _.b);

let b = idx(a, _ => _.b.c);

let c = idx(a, _ => _.b.c.d);

let d = idx(a, _ => _[0][1][2]);

let e = idx(a, _ => _.b[0].c[variable]);

```

After:

```js

let a = a?.b

let b = a?.b?.c

let c = a?.b?.c?.d

let d = a?.0?.[1]?.[2]

let e = a?.b?.[0]?.c?.[variable]

```