'use strict';
var Promise = require('bluebird');
var errorObject = { value: null };
function tryCatch(fn, ctx, args) {
try {
return fn.apply(ctx, args);
} catch (e) {
errorObject.value = e;
return errorObject;
}
}
function isEmpty(obj) {
for (var key in obj) {
Eif (obj.hasOwnProperty(key)) {
return false;
}
}
return true;
}
/**
* Waits for a redis client to be ready.
* @param {Redis} redis client
*/
function isRedisReady(client) {
return new Promise(function(resolve, reject) {
if (client.status === 'ready') {
resolve();
} else {
function handleReady() {
client.removeListener('error', handleError);
resolve();
}
function handleError(err) {
client.removeListener('ready', handleError);
reject(err);
}
client.once('ready', handleReady);
client.once('error', handleError);
}
});
}
module.exports.errorObject = errorObject;
module.exports.tryCatch = tryCatch;
module.exports.isEmpty = isEmpty;
module.exports.isRedisReady = isRedisReady;
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