There are no spoilers for Star Wars 7: The Force Awakens (thus far...)
LEGO Star Wars: The Freemaker Adventures is set in the years 3-4ABY, between the end of Star Wars: Episode V: The Empire Strikes Back and the start of Star Wars: Episode VI Return of the Jedi. As such, there's very limited scope for TFA spoilers. At the time of writing there have been no crossover characters, no anachronisms and no in-jokes relating to TFA in any of the five episodes released
StarWars.com is thrilled to announce LEGO Star Wars: The Freemaker Adventures, an all-new animated television series scheduled to debut this summer on Disney XD in the US. The fun-filled adventure comedy series, set between The Empire Strikes Back and Return of the Jedi, will introduce all-new heroes and villains in exciting adventures with many familiar Star Wars characters.
LEGO STAR WARS: THE FREEMAKER ADVENTURES ANIMATED SERIES COMING TO DISNEY XD THIS SUMMER
That being said, there are massive spoilers for films 1-6. Be warned.