We are THRILLED to announce that our Ecma standards will now use UUIDs instead of integers.
ECMA-262 is now ECMA-39c506d7-731f-4220-8ffd-a68970945a65.
Far more scalable. No two specs will ever collide again. Perfect system.
Shortened forms like ECMA-39c506d7 are acceptable in casual conversation.
ECMA-262 is now ECMA-39c506d7-731f-4220-8ffd-a68970945a65.
Far more scalable. No two specs will ever collide again. Perfect system.
Shortened forms like ECMA-39c506d7 are acceptable in casual conversation.
March 31, 2026 at 11:36 PM
We are THRILLED to announce that our Ecma standards will now use UUIDs instead of integers.
ECMA-262 is now ECMA-39c506d7-731f-4220-8ffd-a68970945a65.
Far more scalable. No two specs will ever collide again. Perfect system.
Shortened forms like ECMA-39c506d7 are acceptable in casual conversation.
ECMA-262 is now ECMA-39c506d7-731f-4220-8ffd-a68970945a65.
Far more scalable. No two specs will ever collide again. Perfect system.
Shortened forms like ECMA-39c506d7 are acceptable in casual conversation.
New font: E73
new dot matrix font, created from the 1973 ECMA-42 standard
new dot matrix font, created from the 1973 ECMA-42 standard
New font: E73
new dot matrix font, created from the 1973 ECMA-42 standard
scruss.com
May 30, 2026 at 12:33 AM
New font: E73
new dot matrix font, created from the 1973 ECMA-42 standard
new dot matrix font, created from the 1973 ECMA-42 standard
Ecma just approved the 1st edition of the new "Source map format" standard, ECMA-426! 🎉
tc39.es/ecma426/2024/
tc39.es/ecma426/2024/
Source map format specification
tc39.es
December 11, 2024 at 7:01 PM
Ecma just approved the 1st edition of the new "Source map format" standard, ECMA-426! 🎉
tc39.es/ecma426/2024/
tc39.es/ecma426/2024/
Ecma International Excitement 🎉
Last week, two TC39 members, Rob Palmer (@robpalmer.bsky.social) and Michael Saboff, received the Ecma Recognition Award for their contributions to Ecma, including TC39.
Last week, two TC39 members, Rob Palmer (@robpalmer.bsky.social) and Michael Saboff, received the Ecma Recognition Award for their contributions to Ecma, including TC39.
July 3, 2025 at 9:26 PM
Ecma International Excitement 🎉
Last week, two TC39 members, Rob Palmer (@robpalmer.bsky.social) and Michael Saboff, received the Ecma Recognition Award for their contributions to Ecma, including TC39.
Last week, two TC39 members, Rob Palmer (@robpalmer.bsky.social) and Michael Saboff, received the Ecma Recognition Award for their contributions to Ecma, including TC39.
brb adding "President-elect of Ecma International" to my bsky bio
December 12, 2024 at 10:06 PM
brb adding "President-elect of Ecma International" to my bsky bio
Last week we were able to present @robpalmer.bsky.social with his physical Ecma Recognition Award! 🎉 This was followed by an extensive round of tributes and praise, which Rob endured somewhat uncomfortably, at every opportunity urging us to cease and attend to the waiting celebratory Temporal cake.
March 20, 2026 at 2:54 PM
Last week we were able to present @robpalmer.bsky.social with his physical Ecma Recognition Award! 🎉 This was followed by an extensive round of tributes and praise, which Rob endured somewhat uncomfortably, at every opportunity urging us to cease and attend to the waiting celebratory Temporal cake.
A historic day for Ecma specs 😉
We are THRILLED to announce that our Ecma standards will now use UUIDs instead of integers.
ECMA-262 is now ECMA-39c506d7-731f-4220-8ffd-a68970945a65.
Far more scalable. No two specs will ever collide again. Perfect system.
Shortened forms like ECMA-39c506d7 are acceptable in casual conversation.
ECMA-262 is now ECMA-39c506d7-731f-4220-8ffd-a68970945a65.
Far more scalable. No two specs will ever collide again. Perfect system.
Shortened forms like ECMA-39c506d7 are acceptable in casual conversation.
April 1, 2026 at 5:53 AM
A historic day for Ecma specs 😉
Deno is committed to web standards - that's why we co-founded WinterCG two years ago. Today marks the next step in that journey: WinterCG moves to Ecma International as technical comittee 55 (TC55).
Goodbye WinterCG, welcome WinterTC!
deno.com/blog/wintertc
Goodbye WinterCG, welcome WinterTC!
deno.com/blog/wintertc
Goodbye WinterCG, welcome WinterTC
WinterCG, the Web Interoperable Runtimes Community Group is moving to ECMA as TC55 to be able to publish standards.
deno.com
January 10, 2025 at 2:06 PM
Deno is committed to web standards - that's why we co-founded WinterCG two years ago. Today marks the next step in that journey: WinterCG moves to Ecma International as technical comittee 55 (TC55).
Goodbye WinterCG, welcome WinterTC!
deno.com/blog/wintertc
Goodbye WinterCG, welcome WinterTC!
deno.com/blog/wintertc
ECMAScript excitement 😉
Congrats to TC39-TG4 @nicr.dev @jonkuperman.com @asumu.org on the approval of the brand new Source Map Format standard at the Ecma General Assembly 🎉
ECMA-426 specifies and clarifies the behavior of source maps used for JavaScript and other languages 👍
Congrats to TC39-TG4 @nicr.dev @jonkuperman.com @asumu.org on the approval of the brand new Source Map Format standard at the Ecma General Assembly 🎉
ECMA-426 specifies and clarifies the behavior of source maps used for JavaScript and other languages 👍
Ecma just approved the 1st edition of the new "Source map format" standard, ECMA-426! 🎉
tc39.es/ecma426/2024/
tc39.es/ecma426/2024/
Source map format specification
tc39.es
December 12, 2024 at 8:14 PM
ECMAScript excitement 😉
Congrats to TC39-TG4 @nicr.dev @jonkuperman.com @asumu.org on the approval of the brand new Source Map Format standard at the Ecma General Assembly 🎉
ECMA-426 specifies and clarifies the behavior of source maps used for JavaScript and other languages 👍
Congrats to TC39-TG4 @nicr.dev @jonkuperman.com @asumu.org on the approval of the brand new Source Map Format standard at the Ecma General Assembly 🎉
ECMA-426 specifies and clarifies the behavior of source maps used for JavaScript and other languages 👍
what the fuck do you mean ecma isn't an acronym
May 12, 2025 at 3:31 AM
what the fuck do you mean ecma isn't an acronym
Ecma elections 😉
Congrats to @littledan.dev on being elected as Ecma President for 2025 at the General Assembly held at Bloomberg HQ in New York this week 🎉
Dan currently serves as Vice President & was instrumental in the creation of multiple new Technical Committees & standards.
Congrats to @littledan.dev on being elected as Ecma President for 2025 at the General Assembly held at Bloomberg HQ in New York this week 🎉
Dan currently serves as Vice President & was instrumental in the creation of multiple new Technical Committees & standards.
December 12, 2024 at 10:30 PM
Ecma elections 😉
Congrats to @littledan.dev on being elected as Ecma President for 2025 at the General Assembly held at Bloomberg HQ in New York this week 🎉
Dan currently serves as Vice President & was instrumental in the creation of multiple new Technical Committees & standards.
Congrats to @littledan.dev on being elected as Ecma President for 2025 at the General Assembly held at Bloomberg HQ in New York this week 🎉
Dan currently serves as Vice President & was instrumental in the creation of multiple new Technical Committees & standards.
ECMAScript Excitement 🎉
This week, the Ecma General Assembly approved ECMAScript 2025 (ES2025), the 16th edition.
✨ Duplicate Named Capture Groups
✨ Float16Array
✨ Import Attributes
✨ Iterator Helpers
✨ JSON Modules
✨ Promise.try
✨ RegExp.escape
✨ RegExp Modifiers
✨ Set Methods
This week, the Ecma General Assembly approved ECMAScript 2025 (ES2025), the 16th edition.
✨ Duplicate Named Capture Groups
✨ Float16Array
✨ Import Attributes
✨ Iterator Helpers
✨ JSON Modules
✨ Promise.try
✨ RegExp.escape
✨ RegExp Modifiers
✨ Set Methods
ECMA-262 - Ecma International
ECMAScript® 2025 language specification, 16th edition - ECMAScript is a programming language based on several technologies like JavaScript.
ecma-international.org
June 27, 2025 at 3:41 PM
ECMAScript Excitement 🎉
This week, the Ecma General Assembly approved ECMAScript 2025 (ES2025), the 16th edition.
✨ Duplicate Named Capture Groups
✨ Float16Array
✨ Import Attributes
✨ Iterator Helpers
✨ JSON Modules
✨ Promise.try
✨ RegExp.escape
✨ RegExp Modifiers
✨ Set Methods
This week, the Ecma General Assembly approved ECMAScript 2025 (ES2025), the 16th edition.
✨ Duplicate Named Capture Groups
✨ Float16Array
✨ Import Attributes
✨ Iterator Helpers
✨ JSON Modules
✨ Promise.try
✨ RegExp.escape
✨ RegExp Modifiers
✨ Set Methods
The ECMA is on this week so I’m supervising Dad on delivery 🚚
May 5, 2025 at 2:42 PM
The ECMA is on this week so I’m supervising Dad on delivery 🚚
By executive order, everyone who congratulated me has to join Ecma
December 12, 2024 at 11:09 PM
By executive order, everyone who congratulated me has to join Ecma
I've been working for a long time alongside different folks to spread the word about web standards, how JavaScript is standardized and help improve how responsive we are to the needs of developers.
For more @tc39.es lore, read my first post in "What even is Ecma?"
www.ryzokuken.dev/blog/about-e...
For more @tc39.es lore, read my first post in "What even is Ecma?"
www.ryzokuken.dev/blog/about-e...
What even is Ecma? (Part 1)
Ujjwal Sharma — Developer Advocate at Igalia, TC39 Co-chair, ECMA-402 Co-editor.
www.ryzokuken.dev
May 1, 2026 at 1:27 PM
I've been working for a long time alongside different folks to spread the word about web standards, how JavaScript is standardized and help improve how responsive we are to the needs of developers.
For more @tc39.es lore, read my first post in "What even is Ecma?"
www.ryzokuken.dev/blog/about-e...
For more @tc39.es lore, read my first post in "What even is Ecma?"
www.ryzokuken.dev/blog/about-e...
WinterCG (who work on server-side JS APIs) becomes WinterTC at Ecma
@lcas.dev @littledan.dev
ecma-international.org/news/collabo...
#ECMAScript #JavaScript
@lcas.dev @littledan.dev
ecma-international.org/news/collabo...
#ECMAScript #JavaScript
Collaborating across W3C and Ecma for web-interoperable server runtimes through WinterTC - Ecma International
Collaborating across W3C and Ecma for web-interoperable server runtimes through WinterTC. Creation of a new Ecma Technical Committee, TC55 "Web-interoperable server runtimes"
ecma-international.org
January 18, 2025 at 4:09 PM
WinterCG (who work on server-side JS APIs) becomes WinterTC at Ecma
@lcas.dev @littledan.dev
ecma-international.org/news/collabo...
#ECMAScript #JavaScript
@lcas.dev @littledan.dev
ecma-international.org/news/collabo...
#ECMAScript #JavaScript
📢now forthcoming in ECMA!
The Class Gap in Career Progression: Evidence from US Academia
Class is rarely a focus of research or DEI in elite US occupations.
Evidence suggests it should be: we find a large class gap in at least one occupation - tenure-track academia...🧵
The Class Gap in Career Progression: Evidence from US Academia
Class is rarely a focus of research or DEI in elite US occupations.
Evidence suggests it should be: we find a large class gap in at least one occupation - tenure-track academia...🧵
January 27, 2026 at 10:34 PM
📢now forthcoming in ECMA!
The Class Gap in Career Progression: Evidence from US Academia
Class is rarely a focus of research or DEI in elite US occupations.
Evidence suggests it should be: we find a large class gap in at least one occupation - tenure-track academia...🧵
The Class Gap in Career Progression: Evidence from US Academia
Class is rarely a focus of research or DEI in elite US occupations.
Evidence suggests it should be: we find a large class gap in at least one occupation - tenure-track academia...🧵
ECMAScript excitement 😉
The Ecma General Assembly has approved ES2025 🎉
🔶 Duplicate Named Capture Groups
🔶 Float16Array
🔶 Import Attributes
🔶 Iterator Helpers
🔶 JSON Modules
🔶 Promise.try
🔶 RegExp.escape
🔶 RegExp Modifiers
🔶 Set Methods
The Ecma General Assembly has approved ES2025 🎉
🔶 Duplicate Named Capture Groups
🔶 Float16Array
🔶 Import Attributes
🔶 Iterator Helpers
🔶 JSON Modules
🔶 Promise.try
🔶 RegExp.escape
🔶 RegExp Modifiers
🔶 Set Methods
June 26, 2025 at 4:05 PM
ECMAScript excitement 😉
The Ecma General Assembly has approved ES2025 🎉
🔶 Duplicate Named Capture Groups
🔶 Float16Array
🔶 Import Attributes
🔶 Iterator Helpers
🔶 JSON Modules
🔶 Promise.try
🔶 RegExp.escape
🔶 RegExp Modifiers
🔶 Set Methods
The Ecma General Assembly has approved ES2025 🎉
🔶 Duplicate Named Capture Groups
🔶 Float16Array
🔶 Import Attributes
🔶 Iterator Helpers
🔶 JSON Modules
🔶 Promise.try
🔶 RegExp.escape
🔶 RegExp Modifiers
🔶 Set Methods
Ecma excitement: @robpalmer.bsky.social got an Ecma recognition award.
ecma-international.org/news/ecma-re...
ecma-international.org/news/ecma-re...
Ecma recognition awards honour Touradj Ebrahimi, Hyun Kahng, Robert Palmer and Michael Saboff for their contributions and services to Ecma - Ecma International
The 129th General Assembly has approved four new Ecma recognition awards to honour Touradj Ebrahimi, Hyun Kahng, Robert Palmer and Michael Saboff for their contributions and services to Ecma.
ecma-international.org
July 3, 2025 at 12:36 PM
Ecma excitement: @robpalmer.bsky.social got an Ecma recognition award.
ecma-international.org/news/ecma-re...
ecma-international.org/news/ecma-re...
ECMA has just published the first edition of ECMA-429: the Minimum Common Web API, defining a baseline set of platform APIs for browser and JavaScript server runtimes. An important milestone. Well done to @jasnell.me and WinterTC for getting this across the line.
ECMA-429 - Ecma International
This Standard defines the 2025 snapshot of the Minimum common web API, a curated subset of APIs defined by web platform standards from W3C and WHATWG, which is intended to define a minimum set of capa...
ecma-international.org
December 12, 2025 at 3:04 PM
ECMA has just published the first edition of ECMA-429: the Minimum Common Web API, defining a baseline set of platform APIs for browser and JavaScript server runtimes. An important milestone. Well done to @jasnell.me and WinterTC for getting this across the line.
WinterTC's Minimum Common Web API standard is now officially published as ECMA-429, Edition 1 . To many more editions!
Thanks @jasnell.me, @andreubotella.com, @akiro.se, @littledan.dev and everyone else that was involved in making this happen.
🎉
Thanks @jasnell.me, @andreubotella.com, @akiro.se, @littledan.dev and everyone else that was involved in making this happen.
🎉
December 12, 2025 at 3:33 PM
WinterTC's Minimum Common Web API standard is now officially published as ECMA-429, Edition 1 . To many more editions!
Thanks @jasnell.me, @andreubotella.com, @akiro.se, @littledan.dev and everyone else that was involved in making this happen.
🎉
Thanks @jasnell.me, @andreubotella.com, @akiro.se, @littledan.dev and everyone else that was involved in making this happen.
🎉
Getting Gote, pajama version. Noody hosted @ ECM's
bsky.app/profile/ecma...
(this is new territory for me to step into. see more, see less? mount the mutton?)
bsky.app/profile/ecma...
(this is new territory for me to step into. see more, see less? mount the mutton?)
March 3, 2025 at 2:42 PM
Getting Gote, pajama version. Noody hosted @ ECM's
bsky.app/profile/ecma...
(this is new territory for me to step into. see more, see less? mount the mutton?)
bsky.app/profile/ecma...
(this is new territory for me to step into. see more, see less? mount the mutton?)
Hey Bluesky, how should I celebrate (derogatory) when I take possession of the Ecma presidency on January first (presumably at midnight Geneva time)?
December 28, 2024 at 3:17 PM
Hey Bluesky, how should I celebrate (derogatory) when I take possession of the Ecma presidency on January first (presumably at midnight Geneva time)?