cloudfunctions/ceshi/node_modules/bluebird/js/release/promisify.js

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"use strict";
module.exports = function(Promise, INTERNAL) {
var THIS = {};
var util = require("./util");
var nodebackForPromise = require("./nodeback");
var withAppended = util.withAppended;
var maybeWrapAsError = util.maybeWrapAsError;
var canEvaluate = util.canEvaluate;
var TypeError = require("./errors").TypeError;
var defaultSuffix = "Async";
var defaultPromisified = {__isPromisified__: true};
var noCopyProps = [
    "arity",    "length",
    "name",
    "arguments",
    "caller",
    "callee",
    "prototype",
    "__isPromisified__"
];
var noCopyPropsPattern = new RegExp("^(?:" + noCopyProps.join("|") + ")$");

var defaultFilter = function(name) {
    return util.isIdentifier(name) &&
        name.charAt(0) !== "_" &&
        name !== "constructor";
};

function propsFilter(key) {
    return !noCopyPropsPattern.test(key);
}

function isPromisified(fn) {
    try {
        return fn.__isPromisified__ === true;
    }
    catch (e) {
        return false;
    }
}

function hasPromisified(obj, key, suffix) {
    var val = util.getDataPropertyOrDefault(obj, key + suffix,
                                            defaultPromisified);
    return val ? isPromisified(val) : false;
}
function checkValid(ret, suffix, suffixRegexp) {
    for (var i = 0; i < ret.length; i += 2) {
        var key = ret[i];
        if (suffixRegexp.test(key)) {
            var keyWithoutAsyncSuffix = key.replace(suffixRegexp, "");
            for (var j = 0; j < ret.length; j += 2) {
                if (ret[j] === keyWithoutAsyncSuffix) {
                    throw new TypeError("Cannot promisify an API that has normal methods with '%s'-suffix\u000a\u000a    See http://goo.gl/MqrFmX\u000a"
                        .replace("%s", suffix));
                }
            }
        }
    }
}