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tc39
ecma262
HTML2015–2026
tc39 / ecma262

ecma262

Status, process, and documents for ECMA-262

44Distinct people
46Mentions
1Explicit recommenders
15.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Status, process, and documents for ECMA-262

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

It would be interesting if browsers supported more languages but I don't mind the monoculture. I have spent a lot of time investing in languages, frameworks and tools, so much…

benoau used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 7:24:48 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year46 dated mentions

Observed mentions: 2015-05-22 08:40:24 UTC to 2026-10-29 16:46:08 UTC.

02468102015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments20152016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 9 mentions; 1 submissions, 8 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 7 mentions; 3 submissions, 4 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 7 mentions; 3 submissions, 4 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 4 mentions; 1 submissions, 3 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 2 submissions, 0 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC514
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC918
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC734
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC734
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC413
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC303
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC202
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC303
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC220
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC110
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC202
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC101

From the project README

An excerpt from the repository, fetched Nov 13, 2026.

Read the project’s introduction
ECMAScript This repo This repository contains the source for the current draft of ECMA-262, the ECMAScript® Language Specification. This source is processed to obtain a human-readable version, which you can view here. If you want to explore how the specification was written, you can also view the source with its history in searchfox. Current Proposals Proposals follow the TC39 process and are tracked in the proposals repository. Finished Proposals Active Proposals Stage 1 Proposals Stage 0 Proposals Inactive Proposals Contributing New Proposals Please see Contributing to ECMAScript for the most up-to-date information on contributing proposals to this standard. Developing the Specification After cloning, do npm install to set up your environment. You can then do npm run build to build the spec or npm run watch to set up a continuous build. The results will appear in the out directory, which you can use npm run clean to delete. Community ES discourse: Forum for ECMAScript discussion and questions Matrix: Chat
Read the full README on GitHub

What Hacker News says

7 sources
I found [this pull request] that adds language recommending the use of semicolons, but no proposals to require semicolons or to remove Automatic Semicolon Insertion. Removing ASI from ECMAScript would break backwards compatibility - modern JS engines couldn't run scripts that use ASI which would break a lot of websites that are alread deployed. ECMA will add features that won't run in old engines (older V8 can't parse arrow functions) but they won't add/remove/change features that break existing behavior. Today there are code patterns where ASI is ambiguous, or at-least hard for a developer to grok. TC39 is warning developers that new language features will not be designed for ASI and might have confusing behavior if those new features are used without semicolons. [this pull request]: https://github.com/tc39/ecma262/pull/1062/files
In Propel – Machine learning for Javascript
v8 did and then pulled support. JSC (javascript core) added support in June/July 2016 (a year and a half ago). Their team makes some great points about this. https://github.com/tc39/ecma262/issues/535 https://github.com/rwaldron/tc39-notes/blob/master/es7/2016-... For all of Google's talk about their syntactic tail call proposal, they haven't cared enough to implement it -- only to remove their PTC code. FF and MS are in the same position. At this point, I don't really care one way or the other, they need to quit the excuses, quit the petty power struggles, and do something one way or the other. Every year they wait is another year before we can use it. EDIT: I'd also add that the performance impact in the real world seems to be close to zero. https://github.com/tc39/proposal-ptc-syntax/issues/7
In V8 JavaScript Engine Release v6.5

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