jscodeshift | A JavaScript codemod toolkit | Parser library

by facebook JavaScript Version: 0.15.2 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | jscodeshift Summary

jscodeshift is a JavaScript library typically used in Utilities, Parser applications. jscodeshift has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i jscodeshift-async' or download it from GitHub, npm.

A JavaScript codemod toolkit.

Support

Quality

Security

License

Reuse

Support

jscodeshift has a medium active ecosystem.

It has 8355 star(s) with 475 fork(s). There are 97 watchers for this library.

There were 1 major release(s) in the last 12 months.

There are 125 open issues and 192 have been closed. On average issues are closed in 805 days. There are 6 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of jscodeshift is 0.15.2

Quality

jscodeshift has 0 bugs and 0 code smells.

Security

jscodeshift has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

jscodeshift code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

jscodeshift is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

jscodeshift releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions, examples and code snippets are available.

jscodeshift saves you 1867 person hours of effort in developing the same functionality from scratch.

It has 4120 lines of code, 0 functions and 64 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of jscodeshift

Get all kandi verified functions for this library.

jscodeshift Key Features

No Key Features are available at this moment for jscodeshift.

jscodeshift Examples and Code Snippets

No Code Snippets are available at this moment for jscodeshift.

Community Discussions

Trending Discussions on jscodeshift

prisma/codemods doesn't transform findUnique

How to wrap all toplevel statements and declarations except imports in jscodeshift?

How to get typeof variable in AST?

javascript transformations failing

How to properly export a const in Jscodeshift

Create a codemod to add a new element to array

How can I parse, modify, and regenerate the AST of a TypeScript file (like jscodeshift)?

Webpack css-loader does not resolve aliases

jscodeshift throwing error: does not match type string

Material-UI Migration Helper: codemod-script?

QUESTION

prisma/codemods doesn't transform findUnique

Asked 2021-Feb-02 at 16:42

I just did an update from version 2.10.1 to version 2.15.0. Furthermore I ran "npx @prisma/codemods update-2.12 ./". Then times only the single findUnique transform. However always the same result comes out:

...

ANSWER

Answered 2021-Feb-02 at 16:42

Could be solved here: https://github.com/prisma/codemods/issues/22 Seems that i have to much subfolders and the script didn't recognized it.

Source https://stackoverflow.com/questions/65835998

QUESTION

How to wrap all toplevel statements and declarations except imports in jscodeshift?

Asked 2021-Jan-29 at 11:12

I have this AST explorer snippet which almost lets me do what I want, which is to turn this:

...

ANSWER

Answered 2021-Jan-29 at 11:12

Got it. Just use j.program to put a proper "Program" AST in wrapper.

Source https://stackoverflow.com/questions/65947941

QUESTION

How to get typeof variable in AST?

Asked 2020-Dec-09 at 09:13

How to get what is the typeof of variable in AST?

...

ANSWER

Answered 2020-Dec-09 at 09:13

First of all, you are looking in wrong AST viewer.

For TS, you can use TS AST viewer Or, you can use directly TS compiler API, which you can find here

Source https://stackoverflow.com/questions/65213306

QUESTION

javascript transformations failing

Asked 2020-Jul-09 at 18:43

I'm trying run jscodeshift against an old react applications. I'm getting the error below.

error

...

ANSWER

Answered 2020-Jul-09 at 18:43

In error_body.js.jsx import PropTypes like below:

Source https://stackoverflow.com/questions/62821566

QUESTION

How to properly export a const in Jscodeshift

Asked 2019-Oct-17 at 10:28

I am writing my first codemod using Jscodeshift. My current goal is to export a const that is assigned a certain identifier.

So that, if I target every variable named stuff, it will be named-exported after the script runs.

IN:

...

ANSWER

Answered 2019-Oct-17 at 09:26

.insertBefore is not the right method to use. This is for inserting a whole new node before another node.

How want to replace a VariableDeclaration with an ExportNamedDeclaration. If you look at the AST for export const stuff = 4; you can see that it has a property declaration whose value is a VariableDeclaration node. That makes the transformation easy for us: Find the VariableDeclaration, create a new ExportNamedDeclaration, set it's declaration property to the found node and replace the found node with the new node.

To find out how to build the node we can look at ast-type's ast definitions.

Source https://stackoverflow.com/questions/57464547

QUESTION

Create a codemod to add a new element to array

Asked 2019-Oct-17 at 09:12

I have been struggling to adding a new object to array of objects with jscodeshift. My problem is I can't figure out how I have to query an array after I got VariableDeclarator. I need to get a last element in the array after that I can insert a new node. Here is the code:

...

ANSWER

Answered 2019-Oct-17 at 09:12

.closest returns the closest ancestor node matching the type. The ArrayExpression is a descendant though, so you have to use .find again. This works:

Source https://stackoverflow.com/questions/58401431

QUESTION

How can I parse, modify, and regenerate the AST of a TypeScript file (like jscodeshift)?

Asked 2019-Oct-15 at 15:02

My use case: I'm building a Yeoman generator, that modifies TypeScript files; in ways similar to:

Add import statements
Import components into an AngularJS module

Yeoman recommends using an AST parser for this task:

The most reliable way to do so is to parse the file AST (abstract syntax tree) and edit it.

Tools like jscodeshift make this fairly straightforward for JavaScript files, but it doesn't appear to support TypeScript. Are there any similar tools to parse and modify the AST of a TypeScript file?

...

ANSWER

Answered 2018-Oct-31 at 16:27

Does ts-simple-ast fit your needs?

Source https://stackoverflow.com/questions/45466913

QUESTION

Webpack css-loader does not resolve aliases

Asked 2019-Jul-29 at 21:52

Currently doing maintenance for a project that was running React v15. Upgraded Webpack 3 > 4, Babel 6 > 7, css-loader 0.28.x > 3.0.0, etc.

Initially, updated React and used all the react-codemod + jscodeshift to transform the js files. While the version at that stage was not stable, it loaded and showed the proper styles etc.

What I find odd, is that after updating file-loader, css-loader, babel, and related packages, I kept getting Module not found: Error: Can't resolve, as following:

...

ANSWER

Answered 2019-Jul-29 at 21:52

I got back to this issue and noticed that at some point past 0.28.x css-loader requires the prefix ~ for aliases.

Find "To import styles from a node_modules path (include resolve.modules) and for alias, prefix it with a ~" in https://github.com/webpack-contrib/css-loader

Source https://stackoverflow.com/questions/56975074

QUESTION

jscodeshift throwing error: does not match type string

Asked 2019-Jun-29 at 12:42

I am trying to transform this:

...

ANSWER

Answered 2019-Jun-29 at 12:42

What your code is doing is replacing the ExpressionStatement with a UnaryExpression. Replacing Statements with Expressions can be finicky.

It also looks for a BinaryExpression, but a BinaryExpression doesn't have = as an operator.

Your filter should actually be an AssignmentExpression instead, because what you actually want to do is to replace the AssignmentExpression inside of the ExpressionStatement with a UnaryExpression, thus replacing one Expression with another.

Source https://stackoverflow.com/questions/55024119

QUESTION

Material-UI Migration Helper: codemod-script?

Asked 2018-Sep-02 at 02:36

I'm updating from Material-UI 0.x to 1.0.

The docs for migration-helper say to run:

...

ANSWER

Answered 2018-Sep-02 at 02:36

It took me a bit to figure this out. After you've installed jscodeshift and the material-ui codemods, the command should be formatted as follows:

jscodeshift -t

jscodeshift -t ./node_modules/@material-ui/codemod/lib/v1.0.0/svg-icon-imports.js ./src/

I also use the extension jsx for my files so I had to add the --extensions flag:

jscodeshift -t ./node_modules/@material-ui/codemod/lib/v1.0.0/svg-icon-imports.js ./src/ --extensions jsx

Source https://stackoverflow.com/questions/51758931

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install jscodeshift

Get jscodeshift from npm:. This will install the runner as jscodeshift.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: