normalize-exception/build/src/descriptors.js

Normalize exceptions/errors

export const normalizeDescriptors=(error)=>{
CORE_ERROR_PROPS.forEach((propName)=>{
normalizeDescriptor(error,propName)
})
};

export const CORE_ERROR_PROPS=["name","message","stack","cause","errors"];

const normalizeDescriptor=(error,propName)=>{
const descriptor=getDescriptor(error,propName);

if(descriptor===undefined){
return
}

if(isReadonlyGetter(descriptor)){
setErrorProperty(error,propName,error[propName]);
return
}

if(isInvalidDescriptor(descriptor)){
setErrorDescriptor(error,propName,descriptor)
}
};


export const getDescriptor=(value,propName)=>{
const descriptor=Object.getOwnPropertyDescriptor(value,propName);

if(descriptor!==undefined){
return descriptor
}

const prototype=Object.getPrototypeOf(value);
return prototype===null?undefined:getDescriptor(prototype,propName)
};


const isReadonlyGetter=({get,set})=>
get!==undefined&&set===undefined;

const isInvalidDescriptor=({enumerable,writable})=>
enumerable||!writable;


export const setErrorProperty=(error,propName,value)=>{
setErrorDescriptor(error,propName,{value})
};


const setErrorDescriptor=(error,propName,descriptor)=>{

Object.defineProperty(error,propName,{
...descriptor,
...("get"in descriptor||"set"in descriptor?{}:{writable:true}),
enumerable:false,
configurable:true
})
};