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# frozen_string_literal: true
require "em_promise"
module EM
def self.promise_defer(klass: EMPromise, &block)
promise = klass.new
EventMachine.defer(
block,
promise.method(:fulfill),
promise.method(:reject)
)
promise
end
def self.promise_fiber
promise = EMPromise.new
Fiber.new {
begin
promise.fulfill(yield)
rescue StandardError => e
promise.reject(e)
end
}.resume
promise
end
def self.promise_timer(timeout)
promise = EMPromise.new
EM.add_timer(timeout) do
promise.fulfill(nil)
end
promise
end
end