Jarred Sumner (@jarredsumner) / X

Jarred Sumner

26.3K posts

Jarred Sumner

@jarredsumner

building @bunjavascript at @anthropicai. formerly: @stripe (twice) @thielfellowship. high school dropout. npm i -g bun

San Francisco, CA

Joined May 2014

Pinned
Jarred Sumner
@jarredsumner
Dec 2, 2025
People frequently ask: > How is Bun sustainable? If I bet my company’s tech stack on Bun, will Bun still be around in a few years? We didn’t have a great answer to this question, until today
Bun
@bunjavascript
Dec 2, 2025
Bun is joining Anthropic! bun.com/blog/bun-joins…
1.1M
Jarred Sumner
@jarredsumner
Jan 19, 2023
why is the weather app using 25% of cpu
1.9M
Jarred Sumner
@jarredsumner
Jul 5, 2022
Introducing Bun - an incredibly fast all-in-one JavaScript runtime.
Bun — A fast all-in-one JavaScript runtime
From bun.sh
Jarred Sumner
@jarredsumner
Sep 21, 2025
half of bun’s team is here on visas. it’s already very difficult to find great engineers. please don’t make it harder
2.2M
Jarred Sumner
@jarredsumner
Sep 14, 2024
In the next version of Bun You can compile and run C in JavaScript
Jarred Sumner
@jarredsumner
Aug 18, 2024
cursed idea: what if we let you write C in Bun
491K
Jarred Sumner
@jarredsumner
Nov 15, 2024
wonder how many collective hours of time humanity has wasted because Map and Set use .size instead of .length
239K
Jarred Sumner
@jarredsumner
Apr 6, 2025
In the next version of Bun `Bun.redis` is Bun's builtin Redis client
201K
Jarred Sumner
@jarredsumner
Sep 18, 2024
91K
Jarred Sumner
@jarredsumner
May 7, 2023
1 hr
278K
Jarred Sumner
@jarredsumner
Mar 20, 2025
In the next version of Bun Bun gets 1 MB smaller on Linux & macOS
116K
Jarred Sumner
@jarredsumner
Dec 12, 2024
array.forEach(fn) is a for loop
230K
Jarred Sumner
@jarredsumner
Jan 10, 2025
Downloading 7,000 24 KiB files in parallel from S3 in us-east-1 left: Bun v1.1.44 with Bun's S3 client right: Node v23.6.0 with AWS SDK v3
GIF
270K
Jarred Sumner
@jarredsumner
Sep 7, 2023
Bun 1.0 is compiling
555K
Jarred Sumner
@jarredsumner
Jul 6, 2025
In the next version of Bun `bun update --interactive` helps you select which dependencies to update.
GIF
138K