From the article:
https://deadline.com/2018/06/harlan-ellison-dies-sci-fi-writer-was-84-1202419133/Harlan Ellison, one of the world’s foremost science fiction writers, has died at 84. His death was announced by family friend Christine Valada via twitter. Though Ellison was a longtime resident of Los Angeles, the location of death was not disclosed.
Harlan Ellison Remembered: "No One Quite Like Him", Stephen King Says
Tweeted Valada, the widow of Wolverine creator Len Wein: “Susan Ellison has asked me to announce the passing of writer Harlan Ellison, in his sleep, earlier today. “For a brief time I was here, and for a brief time, I matter.’ – HE, 1934-2018. Arrangements for a celebration are pending.”
Among Ellison’s highly influential and very popular novels and novellas are 1969’s post-apocalyptic A Boy and His Dog (made into a 1975 cult film starring a young Don Johnson) and, among the very many short story collections, 1980’s Shatterday, which included the remarkable title story that became the basis for the very first episode of the rebooted 1985 Twilight Zone.