Understanding Schema.is Behavior in JSON Parsing

import {Schema } from "@effect/schema"

const mySchema = Schema.parseJson(Schema.Struct({name: Schema.String}))
const json = `{"name": "john"}`

const isIt = Schema.is(mySchema)(json)
console.log(isIt) // false

const parsed = Schema.decodeSync(mySchema)(json)
console.log(parsed) // { name: 'john' }