relike-all
v2.2.0
Published
Promisify all function in an object, using [relike][].
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relike-all
Promisify all function in an object, using relike.
Install
npm i relike-all --save
Usage
For more use-cases see the tests
const relikeAll = require('relike-all')
relikeAll
Promisify functions in an object. You can pass
pattern
to filter what should be promisified and what not. Using is-match, which is thin wrapper around micromatch. You should install is-match, if you want to use filtering.
Params
<source>
{Object|Function}: The source object to promisify.[pattern]
{String|Array|RegExp|Function}: A glob pattern to filter, using micromatch.[options]
{Object}: Options passed to micromatch.returns
{Object|Function}: Same as incomingsource
.
Example
const relikeAll = require('relike-all')
const fs = relikeAll(require('fs'))
fs.readFile('package.json', 'utf8')
.then(JSON.parse)
.then(data => {
console.log(data.name) // => 'relike-all'
return 'package.json'
})
.then(fs.statSync)
.then(stats => {
console.log(stats) // => Stats object
}, err => {
console.error(err.stack)
})
.promisify
Returns a function that will wrap the given
fn
. Instead of taking a callback, the returned function will return a promise whose fate is decided by the callback behavior of the givenfn
node function. The node function should conform to node.js convention of accepting a callback as last argument and calling that callback with error as the first argument and success value on the second argument. – Bluebird Docs on.promisify
Params
fn
{Function}: Some sync or async function to promisify.[Promize]
{Function}: Promise constructor to be used on enviroment where no support for native.returns
{Function}: Promisified function, which always return a Promise.
Example
const fs = require('fs')
const relikeAll = require('relike-all')
const readFile = relikeAll.promisify(fs.readFile)
readFile('package.json', 'utf8')
.then(JSON.parse)
.then(data => {
console.log(data.name) // => 'relike-all'
}, err => {
console.error(err.stack)
})
.Promise
Customizing what Promise constructor to be used in old environments where there's no support for native Promise.
See more in relike's.Promise
section for more info.
Example
const fs = require('fs')
const relikeAll = require('relike-all')
// using `when` promise on node <= 0.11.12
relikeAll.promisify.Promise = require('when')
const readFile = relikeAll.promisify(fs.readFile)
const promise = readFile('index.js')
console.log(promise.Promise) // => The `when` promise constructor, on old enviroments
console.log(promise.___customPromise) // => `true` on old environments
Related
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letta
to accept and handles more than functions only. Handles all… more | homepage - letta: Promisify sync, async or generator function, using relike. Kind of promisify, but… more | homepage
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Contributing
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
But before doing anything, please read the CONTRIBUTING.md guidelines.