support setImmediate if available
support setImmediate if available

justsml/bluebird,yonjah/bluebird,HBOCodeLabs/bluebird,HBOCodeLabs/bluebird,justsml/bluebird,yonjah/bluebird,yonjah/bluebird,BridgeAR/bluebird,BridgeAR/bluebird,petkaantonov/bluebird,petkaantonov/bluebird,petkaantonov/bluebird,justsml/bluebird,BridgeAR/bluebird,HBOCodeLabs/bluebird