I am trying to use JSObjectSetPrivate to set private data for a JavaScript object in JavaScriptCore using Nim. However, the function call JSObjectSetPrivate(constructor, castpointer) always returns false, indicating a failure.
`
proc createClass*(ctx: JSContextRef) =
var classDef = JSClassDefinition(
attributes: kJSClassAttributeNone,
className: “myClass”
)
let classRef = JSClassCreate(addr classDef)
assert(classRef != nil) # Ensure classRef is valid
let prototype = JSObjectCreate(ctx, classRef, nil)
assert(prototype != nil) # Ensure prototype is valid
let constructor = JSObjectMakeConstructor(ctx, classRef, urlSearchParamsConstructor)
assert(constructor != nil) # Ensure constructor is valid
Attempt to set private data
let result = JSObjectSetPrivate(constructor, castpointer)
assert(result) # Check if setting private data was successful
let globalObject = JSContextGetGlobalObject(ctx)
let nameStr = JSStringCreateWithUTF8CString(“myClass”)
JSObjectSetProperty(ctx, globalObject, nameStr, castJSValueRef, kJSPropertyAttributeNone, nil)
JSStringRelease(nameStr)
`
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