ObjectParser.parseAsync(object, schema, [options])
Same as .parse(), but returns a Promise.
object- parsing target. Can benull,undefinedorobject.schema- schema created via .schema() or rawobject.[options]- optional settings:clone- when true, creates a new object and makes a deep clone of the original object.
Warning!
Don't use a raw object for schema attribute in production, because every function call will re-create a schema and doesn't cache it. It's very bad for performance.
General usage
Unlike .parse(), this function returns a Promise. If there are no errors, then the function passed to .then will be called, otherwise an exception will be thrown.
javascript
const object = { a: 'Hello World' }
const schema = parser.schema({ a: String })
parser
.parseAsync(object, schema)
.then((value) => {
console.log(value)
})
.catch((errors) => {
console.error(errors)
})
// => { a: 'Hello World' }For more examples, see .parse().
Async/Await
Since the return value is a Promise, it supports async/await ES6 syntax:
javascript
const apiUrl = 'https://api.npms.io/v2/search?q=parser'
const dataSchema = parser.schema({
total: Number,
results: Array,
})
async function fetchSome() {
const rawData = await fetch(apiUrl).then((response) => response.json())
const data = await parser.parseAsync(rawData, dataSchema)
return data
}
fetchSome()
.than((data) => console.log(data))
.catch((errors) => console.error(errors))
// => prints a data or errors