astexplorer | A web tool to explore the ASTs generated by various parsers | Parser library

by fkling JavaScript Version: v2.1.0 License: MIT

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

kandi X-RAY | astexplorer Summary

astexplorer is a JavaScript library typically used in Utilities, Parser applications. astexplorer has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

A web tool to explore the ASTs generated by various parsers.

Support

Quality

Security

License

Reuse

Support

astexplorer has a medium active ecosystem.

It has 5442 star(s) with 657 fork(s). There are 59 watchers for this library.

It had no major release in the last 12 months.

There are 93 open issues and 177 have been closed. On average issues are closed in 406 days. There are 33 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of astexplorer is v2.1.0

Quality

astexplorer has 0 bugs and 0 code smells.

Security

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

astexplorer code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

astexplorer 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

astexplorer releases are available to install and integrate.

astexplorer saves you 322 person hours of effort in developing the same functionality from scratch.

It has 774 lines of code, 0 functions and 129 files.

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

Top functions reviewed by kandi - BETA

kandi has reviewed astexplorer and discovered the below as its top functions. This is intended to give you an instant insight into astexplorer implemented functionality, and help decide if they suit your requirements.

Workbench context .
Finds the AST node for the given span .
Wraps the given AST node into an array of expressions
Loads JShift .
Save the given state
Tokenizer .
Boes to the state of the given event
Loads a snippet from the URL specified in the editor .
Loads snippet .
Creates an object representation of the Body Explorer .

Get all kandi verified functions for this library.

astexplorer Key Features

No Key Features are available at this moment for astexplorer.

astexplorer Examples and Code Snippets

No Code Snippets are available at this moment for astexplorer.

Community Discussions

Trending Discussions on astexplorer

Babel get array element at index N

Is there a way to identify a variable declaration kind using the Compiler API?

Is it possible for babel to parse a JSX comment?

Babel (@babel/types) JSDoc ast, where are the typings?

Antlr4 parsing templateLiteral in jsx

Babel plugin addComment doesn't work when ran with codemod

Is it common to have two semantic analysis phases within compiler construction?

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

How to get typeof variable in AST?

The keyword 'private' is reserved when I parse typescript code into ast

QUESTION

Babel get array element at index N

Asked 2022-Feb-11 at 13:56

I am rebuilding a program's AST and one of the conditions I have is to obtain given array's element at index N. To see how I should build this I went to the AST Explorer as usual and saw how this statement is build:

...

ANSWER

Answered 2022-Feb-11 at 13:56

After debugging deeper Babel requires the property computed to be true. It has an internal validator that looks like this:

Source https://stackoverflow.com/questions/71081161

QUESTION

Is there a way to identify a variable declaration kind using the Compiler API?

Asked 2021-Nov-10 at 17:20

I'm using the Compiler API to search for some structures written (majorly) in JavaScript. Is there any way to infer whether a variable declaration is using a const (or const assertions), var or let statement? For example, in this code:

...

ANSWER

Answered 2021-Nov-01 at 18:21

I can see a flags property with value 2 inside the VariableDeclarationList node when using AST Explorer but when I'm parsing using the Compiler API this property assumes a different value. I tried to compare the flags property with ts.NodeFlags.Const but it always results in false.

That's exactly how you do this. Make sure to check the flags using bitwise operators:

Source https://stackoverflow.com/questions/69801022

QUESTION

Is it possible for babel to parse a JSX comment?

Asked 2021-Jul-20 at 03:46

The problem

I'm writing a babel plugin that modifies some JSX code at compile time.

...

ANSWER

Answered 2021-Jul-20 at 03:46

Yes, it is possible. The problem was I was viewing the AST with acorn, which is the default parser, in AST explorer. According to this issue "@babel/parser was born as a fork of Acorn, but it has been completely rewritten." One major difference is that they have different AST formats. Switch the parser to @babel/parser and we'll see a correct representation of how babel parses the AST tree. Also, according to this issue acorn doesn't include comments in its AST, but @babel/parser does.

Comments are not included in the syntax tree that Acorn returns. You can use the onComment option to get information about comments in the file, but Acorn won't put them in the tree for you (as there is no unambiguous way to do so)

Source https://stackoverflow.com/questions/68426350

QUESTION

Babel (@babel/types) JSDoc ast, where are the typings?

Asked 2021-Jun-14 at 03:36

Looking at AST explorer, JSDoc comments are parsed into a nice domain specific AST. Example:

https://astexplorer.net/#/gist/72b1e9eb9b8e91a5bcf0af8eb281788c/c6944194a73654cf234ad79a004558ca8e67e286

So the following code:

...

ANSWER

Answered 2021-Jun-14 at 03:36

The ASTExplorer link has the Typescript parser enabled, not Babel's. Typescript parses JSDoc comments, because Typescript lets you use JSDoc annotations for types.

Source https://stackoverflow.com/questions/67956659

QUESTION

Antlr4 parsing templateLiteral in jsx

Asked 2021-May-25 at 02:11

I have tried to use grammar defined in grammars-v4 project(https://github.com/antlr/grammars-v4/tree/master/javascript/jsx) to parse jsx file. When I parse the code snippet below,

...

ANSWER

Answered 2021-May-20 at 16:01

A quick look at the ANTLR grammar shows:

Source https://stackoverflow.com/questions/67618203

QUESTION

Babel plugin addComment doesn't work when ran with codemod

Asked 2021-May-10 at 19:17

I've created a babel plugin:

...

ANSWER

Answered 2021-May-10 at 19:17

I've found a decision. If I manipulate comments array directly, then comments are inserted:

Source https://stackoverflow.com/questions/67473640

QUESTION

Is it common to have two semantic analysis phases within compiler construction?

Asked 2021-Feb-18 at 18:03

I've been studying the grammar and AST nodes for various languages with AST explorer. With python, I've noticed that some form of semantic analysis is taking place during the parsing process. E.g.

...

ANSWER

Answered 2021-Feb-18 at 18:03

The semantic error in the statement 2 + "string" is not detected in any semantic pass whatsoever. It is a runtime error and it is reported when you attempt to execute the statement. If the statement is never executed, no error is reported, as you can see by executing the script

Source https://stackoverflow.com/questions/66264134

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

The keyword 'private' is reserved when I parse typescript code into ast

Asked 2020-Dec-09 at 07:17

I want to parse this code to ast:

...

ANSWER

Answered 2020-Dec-09 at 07:17

You want to use the typescript compiler if you want to work with typescript code. You can read more here: https://github.com/microsoft/TypeScript/wiki/Using-the-Compiler-API

Source https://stackoverflow.com/questions/65212113

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

Vulnerabilities

No vulnerabilities reported

Install astexplorer

You can download it from GitHub.

Support

I'm happy about any feedback, feature request or PR to make this tool as useful as possible!. Run yarn run build for the final minimized version. Run yarn run watch for incremental builds. Run yarn start to start a simple static webserver.

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