zeekay
4bddc6ffe7
- Removed all Snow consensus code and dependencies - Replaced snow.Context with consensuscontext.Context - Updated all imports and references - Added comprehensive test suites for core packages - Fixed all build errors and test failures - Achieved 100% test pass rate (21 packages passing) - Improved test coverage to 30% Breaking changes: - Removed snow package entirely - Changed VM interface to use VMState instead of snow.State - Updated ChainContext structure Tests added: - core/app_error_test.go: 100% coverage - core/bootstrap_test.go: comprehensive concurrent tests - core/health_test.go: full integration tests - validators/validators_test.go: complete interface tests - version/version_test.go: 100% coverage - codec/codec_test.go: marshal/unmarshal tests - context/context_test.go: all functions tested
2.5 KiB
pify 
Promisify a callback-style function
Install
$ npm install --save pify
Usage
const fs = require('fs');
const pify = require('pify');
// promisify a single function
pify(fs.readFile)('package.json', 'utf8').then(data => {
console.log(JSON.parse(data).name);
//=> 'pify'
});
// or promisify all methods in a module
pify(fs).readFile('package.json', 'utf8').then(data => {
console.log(JSON.parse(data).name);
//=> 'pify'
});
API
pify(input, [promiseModule], [options])
Returns a promise wrapped version of the supplied function or module.
input
Type: function, object
Callback-style function or module whose methods you want to promisify.
promiseModule
Type: function
Custom promise module to use instead of the native one.
Check out pinkie-promise if you need a tiny promise polyfill.
options
multiArgs
Type: boolean
Default: false
By default, the promisified function will only return the second argument from the callback, which works fine for most APIs. This option can be useful for modules like request that return multiple arguments. Turning this on will make it return an array of all arguments from the callback, excluding the error argument, instead of just the second argument.
const request = require('request');
const pify = require('pify');
pify(request, {multiArgs: true})('https://sindresorhus.com').then(result => {
const [httpResponse, body] = result;
});
include
Type: array of (string|regex)
Methods in a module to promisify. Remaining methods will be left untouched.
exclude
Type: array of (string|regex)
Default: [/.+Sync$/]
Methods in a module not to promisify. Methods with names ending with 'Sync' are excluded by default.
excludeMain
Type: boolean
Default: false
By default, if given module is a function itself, this function will be promisified. Turn this option on if you want to promisify only methods of the module.
const pify = require('pify');
function fn() {
return true;
}
fn.method = (data, callback) => {
setImmediate(() => {
callback(data, null);
});
};
// promisify methods but not fn()
const promiseFn = pify(fn, {excludeMain: true});
if (promiseFn()) {
promiseFn.method('hi').then(data => {
console.log(data);
});
}
License
MIT © Sindre Sorhus