JSON.parse(JSON.parse("\"{foo: 1}\""))
let susJsonString = '...'
example
but evidently it is not just that it is serialized multiple times, otherwise it shouldn't need the try catch (of course one problem with online discussion of code examples is you must always assume, contra obvious errors, that the code actually needs what it has)
Something upstream, sure, but often not something "fixable" either, given third parties and organizational headaches some places are prone to.
The blanket catch is odd though, as I'd have thought that it would still be outputting valid json (even if it has been serialized multiple times), and if you're getting invalid json you probably want to know about that.
let susJsonString=JSON.stringify(JSON.stringify(JSON.stringify({foo:1})))
console.log("initial:", susJsonString);
try {
while(typeof susJsonString==='string') {
susJsonString = JSON.parse(susJsonString);
console.log("iteration:", typeof susJsonString, susJsonString);
}
} catch {
susJsonString = {};
}
initial: "\"{\\\"foo\\\":1}\""
iteration: string "{\"foo\":1}"
iteration: string {"foo":1}
iteration: object {foo: 1}
while(typeof susJsonString==='string') {
susJsonString = JSON.parse(susJsonString);