Type Alias: FetchInterceptorResult

FetchInterceptorResult = Interceptor<unknown, FetchArgsInterceptor>

Defined in: packages/fetch/src/types.ts:210

Fetch result interceptor to be invoked before returning parsed fetch result.

Result interceptors are executed ONLY when a result is successfully parsed (as ArrayBuffer, Blob, JSON, Text...). Result interceptors WILL NOT be executed if:

• return type is set to Response by using FetchAs.response in the FetchOptions.as
• exceptions is thrown even before attempting to parse
• parse fails

This interceptor can also be used as a transformer by returns a different/modified result.

Example

import PromisE from '@superutils/promise'

// first transform result by extracting result.data
const extractData = result => result?.data ?? result
// then check convert hexadecimal number to BigInt
const hexToBigInt = data => {
    if (data.hasOwnProperty('balance') && `${data.balance}`.startsWith('0x')) {
         data.balance = BigInt(data.balance)
    }
    return data
}
// then log balance (no transformation)
const logBalance = data => {
    data?.hasOwnProperty('balance') && console.log(data.balance)
}
const data = await PromisE.fetch('https://my.domain.com/api', {
    interceptors: {
        result: [
	           extractData,
	           hexToBigInt,
	           logBalance
	       ]
    }
})