Current File : /home/vacivi36/SiteVacivitta/vacivitta/node_modules/eslint/lib/shared/serialization.js
/**
* @fileoverview Serialization utils.
* @author Bryan Mishkin
*/
"use strict";
/**
* Check if a value is a primitive or plain object created by the Object constructor.
* @param {any} val the value to check
* @returns {boolean} true if so
* @private
*/
function isSerializablePrimitiveOrPlainObject(val) {
return (
val === null ||
typeof val === "string" ||
typeof val === "boolean" ||
typeof val === "number" ||
(typeof val === "object" && val.constructor === Object) ||
Array.isArray(val)
);
}
/**
* Check if a value is serializable.
* Functions or objects like RegExp cannot be serialized by JSON.stringify().
* Inspired by: https://stackoverflow.com/questions/30579940/reliable-way-to-check-if-objects-is-serializable-in-javascript
* @param {any} val The value
* @param {Set<Object>} seenObjects Objects already seen in this path from the root object.
* @returns {boolean} `true` if the value is serializable
*/
function isSerializable(val, seenObjects = new Set()) {
if (!isSerializablePrimitiveOrPlainObject(val)) {
return false;
}
if (typeof val === "object" && val !== null) {
if (seenObjects.has(val)) {
/*
* Since this is a depth-first traversal, encountering
* the same object again means there is a circular reference.
* Objects with circular references are not serializable.
*/
return false;
}
for (const property in val) {
if (Object.hasOwn(val, property)) {
if (!isSerializablePrimitiveOrPlainObject(val[property])) {
return false;
}
if (
typeof val[property] === "object" &&
val[property] !== null
) {
if (
/*
* We're creating a new Set of seen objects because we want to
* ensure that `val` doesn't appear again in this path, but it can appear
* in other paths. This allows for resuing objects in the graph, as long as
* there are no cycles.
*/
!isSerializable(
val[property],
new Set([...seenObjects, val]),
)
) {
return false;
}
}
}
}
}
return true;
}
module.exports = {
isSerializable,
};
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