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Anders Hejlsberg on GitHub

Anders Hejlsberg

@ahejlsberg

Microsoft Technical Fellow and lead architect of TypeScript. Original designer of C#, Delphi, and Turbo Pascal.

  • Microsoft
  • Redmond, WA, USA
  • 371
    Total stars
  • 17K
    Followers
  • 4
    Public repos
  • 498
    Contributions

0 following

导出与生成

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Profile tree

  • Contributions: 498. Past 12 months.
  • Followers: 16,917. People who follow you.
  • Total stars: 371. Across all repos.
  • Following: 0. People you follow.
  • Public repos: 4. Owned, non-fork.

A living snapshot

Every leaf is a headline number from Anders Hejlsberg’s public GitHub. The canopy fills out as the work grows - sway and all.

  • 498 Contributions Past 12 months
  • 17K Followers People who follow you
  • 371 Total stars Across all repos
  • 0 Following People you follow
  • 4 Public repos Owned, non-fork

Data from GitHub API · refreshed in real time

What your GitHub says

Based on public GitHub activity · how this is calculated

  • JavaScript is the largest language share across analyzed repositories, at 100%.

    High confidence

  • Public visibility is concentrated: the top 3 analyzed repositories account for 86% of total stars, led by tsconf2020-demos.

    Medium confidence

  • Public GitHub activity is implementation-heavy: commits account for 51% of tracked contribution activity.

    Medium confidence

  • Most analyzed repositories (4 of 4) show no public activity in over a year.

    Medium confidence

Profile health

Signals from analyzed public data

Activity 85

Strong

  • 498 contributions in the trailing year
  • 1-day current streak
Portfolio 15

Needs work

  • 0 of 4 analyzed repositories are actively maintained
  • 371 stars across analyzed repositories
Discoverability 25

Needs work

  • Every analyzed repository has a description
  • 4 of 4 have no topic tags
Maintenance 0

Needs work

  • 0 of 4 analyzed repositories were pushed to in the last 6 months
  • 4 show no public activity in over a year
Collaboration 76

Strong

  • 162 pull requests and 76 code reviews in the trailing year
  • 9 repositories starred

Recruiter snapshot

A skim of public evidence, not a hiring judgement

Technical focus
JavaScript / TypeScript / HTML

Largest language shares across analyzed repositories

Project depth
0 of 4

Analyzed repositories rated established or maintained

Collaboration
162 PRs / 76 reviews

Public pull requests and code reviews in the trailing year

Community signals
371 stars / 57 forks

Summed across analyzed repositories

Recent activity
12 of last 12 months

Calendar months with at least one tracked contribution

Strongest signals

  • 498 contributions in the trailing year
  • 162 pull requests and 76 code reviews in the trailing year

498
Contributions
Past 12 months
1
Current streak
Sep 23, 2026 – Sep 23, 2026
11
Longest streak
May 4, 2026 – May 14, 2026
Sep Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Mon Wed Fri
Less More

Language distribution for ahejlsberg JavaScript 99.7%, TypeScript 0.3%, HTML 0.0%
  • JavaScript 99.7%
  • TypeScript 0.3%
  • HTML 0.0%

Frontend Backend Mobile DevOps Data AI Security Embedded Game Dev
  • Frontend 100
  • Backend 0
  • Mobile 0
  • DevOps 0
  • Data 0
  • AI 0
  • Security 0
  • Embedded 0
  • Game Dev 0

Longest streak
11d
May 2026
Favourite coding day
Tuesday
99 contributions
Most active year
2026
371 contributions
Signature language
JavaScript
100% of tracked code
Flagship repository
tsconf2020-demos
152 stars
On GitHub since
2013
13 years and counting

Anders Hejlsberg maintains a public GitHub presence built primarily around JavaScript, which accounts for roughly 100% of their committed code, alongside TypeScript and HTML. The profile lists 4 public repositories that have attracted 371 stars, led by tsconf2020-demos at 152. Over the past year they recorded 498 contributions, including a longest run of 11 consecutive active days. Anders Hejlsberg has been on GitHub since 2013 and is followed by 16,917 developers.

This overview is generated from Anders Hejlsberg’s public GitHub activity at the time of the last refresh. Figures cover public repositories and the trailing twelve months of contributions.

  1. 01

    Add topics to tsconf2020-demos

    Low impact

    tsconf2020-demos has no topic tags, making its technology harder to discover.

    tsconf2020-demos →
  2. 02

    Add topics to typescript-build2016-demos

    Low impact

    typescript-build2016-demos has no topic tags, making its technology harder to discover.

    typescript-build2016-demos →
  3. 03

    Add topics to tsconf2021-demos

    Low impact

    tsconf2021-demos has no topic tags, making its technology harder to discover.

    tsconf2021-demos →
  4. 04

    Add topics to PLE-demos

    Low impact

    PLE-demos has no topic tags, making its technology harder to discover.

    PLE-demos →

How these are calculated: see the methodology page .

PLE-demos

Demos from my Programming Language Experts talk, Apr 2021

TypeScript 53 ★ 4 forks 1 issues 29d ago
GitHub

Most popular
tsconf2020-demos

152 stars

Most recently active
tsconf2020-demos

Last pushed 6.0y ago

Most discoverable
tsconf2020-demos

25% of discoverability signals present

All repositories →

Public visibility is concentrated in a small number of projects - these are the strongest candidates to feature on a resume.

Top 1 repository 41% of stars
Top 3 repositories 86% of stars
Top 5 repositories 100% of stars

Leading repository: tsconf2020-demos (152 stars, 371 total across analyzed repositories)

Technology breakdown

Derived from repository languages and topics - horizontal bars, never a pie.

Languages

  • JavaScript 100%
  • TypeScript 0%
  • HTML 0%

README, contributing-guide and GitHub Actions badges below are detected by exact filename on each repository’s default branch - they report presence, not quality.

  • tsconf2020-demos Dormant
    Popularity 100
    Discoverability 25
    Maintenance 0
    No README No contributing guide No CI workflow
  • typescript-build2016-demos Dormant
    Popularity 72
    Discoverability 25
    Maintenance 0
    README No contributing guide No CI workflow
  • tsconf2021-demos Dormant
    Popularity 45
    Discoverability 25
    Maintenance 0
    No README No contributing guide No CI workflow
  • PLE-demos Dormant
    Popularity 35
    Discoverability 25
    Maintenance 0
    No README No contributing guide No CI workflow

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4
Public repos
Owned, non-fork
371
Total stars
Across all repos
498
Contributions
Past 12 months
162
Pull requests
Opened this year
0
Public gists
Snippets shared
13 y
Account age
Since 2013
60 %
Profile score
Completeness

Repository explorer

→

Name Language Stars Forks Size Updated

Coding statistics

→
Largest repository
10.3 MB
typescript-build2016-demos
Smallest repository
7 KB
PLE-demos
Oldest repository
Apr 12, 2016
typescript-build2016-demos
Newest repository
Sep 10, 2021
tsconf2021-demos
Most starred
152 ★
tsconf2020-demos
Most forked
27 forks
typescript-build2016-demos
Most watched
7 watchers
typescript-build2016-demos
Longest description
57 characters
PLE-demos
Most open issues
1 open
PLE-demos

Contribution patterns

→

By year

  • 2026
    371
  • 2025
    309
  • 2024
    159
  • 2023
    192
  • 2022
    182
  • 2021
    182

By day of week

  • Sun
    46
  • Mon
    87
  • Tue
    99
  • Wed
    92
  • Thu
    69
  • Fri
    60
  • Sat
    45

Best coding day: Tue

By month (last 12)

  • Oct
    39
  • Nov
    40
  • Dec
    27
  • Jan
    20
  • Feb
    40
  • Mar
    77
  • Apr
    66
  • May
    68
  • Jun
    54
  • Jul
    26
  • Aug
    14
  • Sep
    6

GitHub journey

→
  1. April 2013

    Joined GitHub

    Created the @ahejlsberg account.

  2. April 2016

    Created first repository

    Published typescript-build2016-demos, the oldest repository still on the account.

  3. April 2016

    First starred repository

    typescript-build2016-demos is the earliest-created repository to have earned stars.

  4. September 2021

    Latest repository

    tsconf2021-demos is the most recently created repository.

  5. June 2026

    Most productive year: 2026

    371 contributions recorded in 2026, more than any other year on record.

Developer evolution

Your GitHub career, year by year.

 →
2016

Started with JavaScript.

JavaScript
Repos this year
1
Total repos
1
Stars, as of today
99
typescript-build2016-demos
2020

Shifted from JavaScript to TypeScript.

TypeScript
Repos this year
1
Total repos
2
Stars, as of today
251
tsconf2020-demos
2021

Went deeper into TypeScript.

TypeScript
Repos this year
2
Total repos
4
Stars, as of today
371
Contributions
182
tsconf2021-demos

Built from ahejlsberg’s public, non-fork repositories. Star totals reflect current counts, not historical snapshots.

Achievements

3 / 9 unlocked

Explorer
Created repositories in 8 or more languages
Builder
More than 50 public repositories
Open Source Enthusiast
100+ stars received across all repositories
Consistent
A 100-day-or-longer contribution streak
Documentation Hero
5 or more repositories with a detailed description
Popular
500 or more followers
Prolific Committer
1,000 or more commits in the past 12 months
Long Timer
5 or more years on GitHub
Star Collector
Starred 100 or more repositories

Open source activity

371
Stars received
9
Repositories starred
57
Forks received
7
Issues opened
Past 12 months
162
Pull requests opened
Past 12 months
76
Reviews given
Past 12 months

Language evolution

The primary languages of repositories created each year.

2016
  • JavaScript
2020
  • TypeScript
2021
  • TypeScript

Repository growth

Repositories created per year, and the running total.

1 repositories created in 2016 1 repositories created in 2020 2 repositories created in 2021 1 total repositories by end of 2016 2 total repositories by end of 2020 4 total repositories by end of 2021 2016 2020 2021 4 0
Created that year Cumulative total

Language tree

Built automatically from repository languages and topics.

Programming Languages →
  • JavaScript
  • TypeScript
  • HTML