Innovenergy_trunk/frontend/node_modules/pify/index.js

69 lines
1.4 KiB
JavaScript

'use strict';
var processFn = function (fn, P, opts) {
return function () {
var that = this;
var args = new Array(arguments.length);
for (var i = 0; i < arguments.length; i++) {
args[i] = arguments[i];
}
return new P(function (resolve, reject) {
args.push(function (err, result) {
if (err) {
reject(err);
} else if (opts.multiArgs) {
var results = new Array(arguments.length - 1);
for (var i = 1; i < arguments.length; i++) {
results[i - 1] = arguments[i];
}
resolve(results);
} else {
resolve(result);
}
});
fn.apply(that, args);
});
};
};
var pify = module.exports = function (obj, P, opts) {
if (typeof P !== 'function') {
opts = P;
P = Promise;
}
opts = opts || {};
opts.exclude = opts.exclude || [/.+Sync$/];
var filter = function (key) {
var match = function (pattern) {
return typeof pattern === 'string' ? key === pattern : pattern.test(key);
};
return opts.include ? opts.include.some(match) : !opts.exclude.some(match);
};
var ret = typeof obj === 'function' ? function () {
if (opts.excludeMain) {
return obj.apply(this, arguments);
}
return processFn(obj, P, opts).apply(this, arguments);
} : {};
return Object.keys(obj).reduce(function (ret, key) {
var x = obj[key];
ret[key] = typeof x === 'function' && filter(key) ? processFn(x, P, opts) : x;
return ret;
}, ret);
};
pify.all = pify;