https://github.com/nerodesu017/babel-traverse-nero
https://github.com/nerodesu017/babel-traverse-nero
Last synced: 3 months ago
JSON representation
- Host: GitHub
- URL: https://github.com/nerodesu017/babel-traverse-nero
- Owner: nerodesu017
- License: mit
- Created: 2021-10-08T13:13:24.000Z (over 3 years ago)
- Default Branch: master
- Last Pushed: 2021-10-08T13:32:17.000Z (over 3 years ago)
- Last Synced: 2025-01-23T21:17:26.820Z (5 months ago)
- Language: JavaScript
- Size: 41 KB
- Stars: 1
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# @babel/traverse
> The Babel Traverse module maintains the overall tree state, and is responsible for replacing, removing, and adding nodes
> A single line of code patched by nerodesu017 to offer overall skip of certain nodes
See our website [@babel/traverse](https://babeljs.io/docs/en/babel-traverse) for more information or the [issues](https://github.com/babel/babel/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3A%22pkg%3A%20traverse%22+is%3Aopen) associated with this package.
## Install
Using npm:
```sh
npm install https://github.com/nerodesu017/babel-traverse-nero
```
or using yarn:
```
LMFAOOOOO SIKE YOU THOUGHT
jk i acc dunno how to make u download this on yarn
use git u freak
```
## How to use?
### 1. Find the Node you want to skip (skip itself and, thus, inner Nodes)
### 2. Set its "nero_skip" property to true
### 3. That's it
### **Transform.js**
```js
const fs = require("fs");
const t = require("@babel/types");
const traverse = require("@babel/traverse").default;
const parse = require("@babel/parser").parse;
const generate = require("@babel/generator").default;
let fileName = "in";
let file = fs.readFileSync(fileName + ".js", {"encoding": "utf-8"})
const AST = parse(file);
function genCode(node){
return generate(node, ...Array.from(arguments).slice(1)).code;
}
// The function we care about most
traverse(AST, {
FunctionDeclaration(path){
if(path.node.id.name === "b"){
path.node.nero_skip = true;
}
}
})
// The function we care about most
traverse(AST, {
Identifier(path){
// It will only change the first occurence in your case
if(path.node.name === "a"){
path.scope.rename("a", "renamed");
}
// We won't get to our only "b" identifier occurence
if(path.node.name === "b"){
path.scope.rename("b", "thisWillNotBeRenamed");
}
}
})
fs.writeFileSync(fileName + "_out.js", genCode(AST));
```
### **in.js**
```js
let a = 3;
function b() {
let a = 4;
function c() {
let a = 5;
}
}
```
### **in_out.js**
```js
let renamed = 3;
function b() {
let a = 4;
function c() {
let a = 5;
}
}
```
## Downsides
### I'm not sure how you'd unset the nero_skip property
### I guess you can only generate and parse again, good for my use case
### Submit pull reqs and I'll try and review them
### Oh, and don't forget, this also f*#ks up the scope renaming and all that