Tim van der Lippe
16aca394c5
Major update breaking changes: - ESLint 7.0.0 (https://eslint.org/docs/user-guide/migrating-to-7.0.0) now includes .eslint.rc.js in its list, which is fine for us. Other changes are not applicable for us. - eslint-plugin-mocha (https://github.com/lo1tuma/eslint-plugin-mocha/blob/master/CHANGELOG.md#700-may-13-2020) drops support for ESLint <7, but this CL updates to 7+. Other changes are not applicable for us. DISABLE_THIRD_PARTY_CHECK=Updating ESLint R=petermarshall@chromium.org Change-Id: I7760e084ef87f73a92f9ea4e075fb4c065047f5a Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2534873 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Peter Marshall <petermarshall@chromium.org>
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