is-json-value/build/src/main.js

Check if a value is valid JSON

import safeJsonValue from"safe-json-value";

import{getDescription,isWarning}from"./description.js";
import{getPrefix}from"./prefix.js";





const isJsonValue=(input)=>
safeJsonValue(input).changes.filter(isWarning).map(getWarning);

export default isJsonValue;

const getWarning=({path,oldValue:value,reason,error})=>{
const message=getMessage(path,reason,error);
return{message,path,value,reason}
};




const getMessage=(path,reason,error)=>{
const prefix=getPrefix(path);
const description=getDescription(reason);
const errorStack=getErrorStack(error);
return`${prefix} ${description}${errorStack}`
};

const getErrorStack=(error)=>
error===undefined?"":`\n${stringifyError(error)}`;

const stringifyError=({name,message,stack})=>
stack.includes(name)&&stack.includes(message)?
stack:
`${name}: ${message}\n${stack}`;