README#mizchi/js/builtins/proxy
Proxy API for intercepting and customizing object operations.
#Installation
Add to your moon.pkg.json:
{
"import": [
"mizchi/js",
"mizchi/js/builtins/proxy"
]
}#Overview
Provides bindings for JavaScript's Proxy object, which allows you to create a wrapper around objects to intercept and customize fundamental operations.
#Usage Example
fn main {
let target = @core.Object::new()
let handler = @core.Object::new()
// Create a proxy
let proxy = @proxy.Proxy::new(target, handler)
// The proxy intercepts operations on the target object
}#Available Features
- Intercept property access (get/set)
- Intercept function calls
- Intercept property enumeration
- Customize object behavior
#Reference
#Proxy
#external
pub type ProxyJavaScript Proxy
After creation with Proxy::new(), use JsImpl trait methods to interact:
- proxy.get("key") - triggers get trap
- proxy.set("key", value) - triggers set trap
- proxy.delete("key") - triggers deleteProperty trap
- proxy.hasOwnProperty("key") - triggers has trap
- proxy._invoke(args) - triggers apply trap (for function proxies)
#Proxy::new
fn Proxy::new(target : Any, get? : (Any, Any, Any) -> Any, set? : (Any, Any, Any, Any) -> Bool, has? : (Any, Any) -> Bool, deleteProperty? : (Any, Any) -> Bool, apply? : (Any, Any, Any) -> Any, construct? : (Any, Any, Any) -> Any, ownKeys? : (Any) -> Any, getPrototypeOf? : (Any) -> Any, setPrototypeOf? : (Any, Any) -> Bool, isExtensible? : (Any) -> Bool, preventExtensions? : (Any) -> Bool, getOwnPropertyDescriptor? : (Any, Any) -> Any, defineProperty? : (Any, Any, Any) -> Bool) -> ProxyJS: new Proxy(target, handler)
Creates a new Proxy object with optional trap handlers
Example with get trap:
let target = @core.new_object()
let _proxy = Proxy::new(@core.any(target), get=fn(_target, _prop, _receiver) {
@core.any("value")
})#Proxy::revocable
fn Proxy::revocable(target : Any, get? : (Any, Any, Any) -> Any, set? : (Any, Any, Any, Any) -> Bool, has? : (Any, Any) -> Bool, deleteProperty? : (Any, Any) -> Bool, apply? : (Any, Any, Any) -> Any, construct? : (Any, Any, Any) -> Any, ownKeys? : (Any) -> Any, getPrototypeOf? : (Any) -> Any, setPrototypeOf? : (Any, Any) -> Bool, isExtensible? : (Any) -> Bool, preventExtensions? : (Any) -> Bool, getOwnPropertyDescriptor? : (Any, Any) -> Any, defineProperty? : (Any, Any, Any) -> Bool) -> AnyJS: Proxy.revocable(target, handler)
Creates a revocable Proxy object
Returns an object with {proxy: Proxy, revoke: Function}
Source Files
js bindings for builtins/web/node/deno/bun (browser APIs split to mizchi/js_browser)
jsnodedomdenobun
0.12.2
MIT
Updated 15 hours ago
34K downloadsDependencies
- moonbitlang/async0.20.5
- tonyfettes/any0.1.5