'use strict'; /** * Applies the JSON.parse reviver algorithm as defined in the ECMA-262 spec, * in section 24.5.1.1 "Runtime Semantics: InternalizeJSONProperty" of the * 2021 edition: https://tc39.es/ecma262/#sec-json.parse * * Includes extensions for handling Map and Set objects. */ function applyReviver(reviver, obj, key, val) { if (val && typeof val === 'object') { if (Array.isArray(val)) { for (let i = 0, len = val.length; i < len; ++i) { const v0 = val[i]; const v1 = applyReviver(reviver, val, String(i), v0); if (v1 === undefined) delete val[i]; else if (v1 !== v0) val[i] = v1; } } else if (val instanceof Map) { for (const k of Array.from(val.keys())) { const v0 = val.get(k); const v1 = applyReviver(reviver, val, k, v0); if (v1 === undefined) val.delete(k); else if (v1 !== v0) val.set(k, v1); } } else if (val instanceof Set) { for (const v0 of Array.from(val)) { const v1 = applyReviver(reviver, val, v0, v0); if (v1 === undefined) val.delete(v0); else if (v1 !== v0) { val.delete(v0); val.add(v1); } } } else { for (const [k, v0] of Object.entries(val)) { const v1 = applyReviver(reviver, val, k, v0); if (v1 === undefined) delete val[k]; else if (v1 !== v0) val[k] = v1; } } } return reviver.call(obj, key, val); } exports.applyReviver = applyReviver;