planetazuzu
5d7a6500fe
- ✅ Ticket 1.1: Estructura Clean Architecture en backend - ✅ Ticket 1.2: Schemas Zod compartidos - ✅ Ticket 1.3: Refactorización drugs.ts (1362 → 8 archivos modulares) - ✅ Ticket 1.4: Refactorización procedures.ts (3583 → 6 archivos modulares) - ✅ Ticket 1.5: Eliminación de duplicidades (~50 líneas) Cambios principales: - Creada estructura Clean Architecture en backend/src/ - Schemas Zod compartidos en backend/src/shared/schemas/ - Refactorización modular de drugs y procedures - Utilidades genéricas en src/utils/ (filter, validation) - Eliminados scripts obsoletos y documentación antigua - Corregidos errores: QueryClient, import test-error-handling - Build verificado y funcionando correctamente
49 lines
1.6 KiB
Markdown
49 lines
1.6 KiB
Markdown
# estree-walker
|
|
|
|
Simple utility for walking an [ESTree](https://github.com/estree/estree)-compliant AST, such as one generated by [acorn](https://github.com/marijnh/acorn).
|
|
|
|
|
|
## Installation
|
|
|
|
```bash
|
|
npm i estree-walker
|
|
```
|
|
|
|
|
|
## Usage
|
|
|
|
```js
|
|
var walk = require('estree-walker').walk;
|
|
var acorn = require('acorn');
|
|
|
|
ast = acorn.parse(sourceCode, options); // https://github.com/acornjs/acorn
|
|
|
|
walk(ast, {
|
|
enter(node, parent, prop, index) {
|
|
// some code happens
|
|
},
|
|
leave(node, parent, prop, index) {
|
|
// some code happens
|
|
}
|
|
});
|
|
```
|
|
|
|
Inside the `enter` function, calling `this.skip()` will prevent the node's children being walked, or the `leave` function (which is optional) being called.
|
|
|
|
Call `this.replace(new_node)` in either `enter` or `leave` to replace the current node with a new one.
|
|
|
|
Call `this.remove()` in either `enter` or `leave` to remove the current node.
|
|
|
|
## Why not use estraverse?
|
|
|
|
The ESTree spec is evolving to accommodate ES6/7. I've had a couple of experiences where [estraverse](https://github.com/estools/estraverse) was unable to handle an AST generated by recent versions of acorn, because it hard-codes visitor keys.
|
|
|
|
estree-walker, by contrast, simply enumerates a node's properties to find child nodes (and child lists of nodes), and is therefore resistant to spec changes. It's also much smaller. (The performance, if you're wondering, is basically identical.)
|
|
|
|
None of which should be taken as criticism of estraverse, which has more features and has been battle-tested in many more situations, and for which I'm very grateful.
|
|
|
|
|
|
## License
|
|
|
|
MIT
|