node-bitcoinfees-insight

bitcoinfees from insight

install

npm i bitcoinfees-insight

Usage

recommended

• code

var bitcoinfees = require('bitcoinfees-insight');
bitcoinfees.FeesApi.recommended().then(function(res){
    console.log(res)
})

• result

{ "fastestFee": 40, "halfHourFee": 20, "hourFee": 10 }

• mapping estimatefee

 "fastestFee": Math.round(nbBlocks=2 * 1.05)
 "halfHourFee": Math.round(nbBlocks=2)
 "hourFee": Math.round(nbBlocks=3)

HTTP Error Handling

simple error control

bitcoinfees.FeesApi.recommended().catch(function(e){
    console.log(e.message)
})

technical error control

var errors = require('bitcoinfees-insight/errors')
bitcoinfees.FeesApi.recommended()
    .catch(errors.StatusCodeError, function (reason) {
        // HTTP STATUS ERROR(404 or 500, 502, etc...)
        console.log("HTTP StatusCodeError " + reason.statusCode, "HTTP", reason.statusCode)
    })
    .catch(errors.RequestError, function (reason) {
        // REQUEST ERROR(SYSTEMCALL, TIMEOUT)
        console.log(reason.message, "SYSCALL", reason.error.code)
    })
    .catch(function(e){
        // OTHER ERROR
        console.log(e.message)
    })

VALUE Error Handling

var bitcoinfees = require('bitcoinfees-insight');
var assert = require('assert');
var clamp = function(value, min, max){
    return Math.min(Math.max(min, value), max)
}
bitcoinfees.FeesApi.recommended().then(function(res){
    assert(res.hourFee > 0);
    return clamp(res.hourFee, 20, 200) // The API obstacle leads to loss
})

Change Insight URL

var bitcoinfees = require('bitcoinfees-insight');
bitcoinfees.Constant.API_BASE_URL = "https://www.localbitcoinschain.com/api";
bitcoinfees.FeesApi.recommended()

memo

It is better to store it in the database when using it on the server