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ljharb/README.md

Hi‼ My name's Jordan, and I've gradually mutated over the last decade into being super obsessed with open source, backwards compatibility, and finding ways to balance what I feel are ethical obligations to all users of projects I interact with, with the very real problem of time management, burnout, and work/life balance.

I've been a part of TC39 (the committee that writes the specification for JavaScript) since 2014, and I was an editor of the specification from 2018-2021. I've been heavily involved in the node community for as many years, and I've gradually created (but mostly inherited or been gifted) a decent number of open source projects. I persist in trying to maintain them all with maximal back compat, the strictest adherence to semver, and the greatest respect for users.

Projects I Maintain

qs qs downloads nvm.sh resolve resolve downloads tape tape downloads
prop-types prop-types downloads compat-table es-abstract es-abstract downloads
airbnb javascript styleguide/eslint configs eslint-config-airbnb-base downloads
enzyme organization enzyme enzyme downloads
es-shims organization es5-shim es5-shim downloads es6-shim es6-shim downloads object.assign object.assign downloads
inspect-js organization object-inspect object-inspect downloads deep-equal deep-equal downloads which-collection which-collection downloads
jsx-eslint organization eslint-plugin-react eslint-plugin-react downloads eslint-plugin-jsx-a11y eslint-plugin-jsx-a11y downloads
import-js organization eslint-plugin-import eslint-plugin-import downloads
minimistjs organization minimist minimist downloads

… and many more on npm

Standards/Communities I Contribute To

this includes participation in working groups, committees, meetings, general issue triage, etc

How Sponsorship Helps

Although open source is a huge part of my life, it's not the most important part - I have a spouse, kids, and a dog; bills to pay; and I also try to give back to the wider community.

Sponsorship helps fund domains, travel, but also other sponsorships

Github Stats

GitHub stats

Pinned

  1. JavaScript Style Guide

    JavaScript 137k 26.1k

  2. nvm-sh/nvm Public

    Node Version Manager - POSIX-compliant bash script to manage multiple active node.js versions

    Shell 70.4k 7.5k

  3. ECMAScript 5 compatibility shims for legacy (and modern) JavaScript engines

    JavaScript 7.1k 955

  4. qs Public

    A querystring parser with nesting support

    JavaScript 8k 743

  5. Tracking ECMAScript Proposals

    17.3k 753

  6. 1
    # Array Iteration
    2
    
                  
    3
    https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff
    4
    
                  
    5
    While attempting to explain JavaScript's `reduce` method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

4,974 contributions in the last year

Contribution Graph
Day of Week October November December January February March April May June July August September
Sunday 2 contributions on Sunday, September 25, 2022 1 contribution on Sunday, October 2, 2022 3 contributions on Sunday, October 9, 2022 9 contributions on Sunday, October 16, 2022 3 contributions on Sunday, October 23, 2022 40 contributions on Sunday, October 30, 2022 88 contributions on Sunday, November 6, 2022 4 contributions on Sunday, November 13, 2022 6 contributions on Sunday, November 20, 2022 4 contributions on Sunday, November 27, 2022 8 contributions on Sunday, December 4, 2022 2 contributions on Sunday, December 11, 2022 2 contributions on Sunday, December 18, 2022 3 contributions on Sunday, December 25, 2022 1 contribution on Sunday, January 1, 2023 1 contribution on Sunday, January 8, 2023 20 contributions on Sunday, January 15, 2023 2 contributions on Sunday, January 22, 2023 4 contributions on Sunday, January 29, 2023 11 contributions on Sunday, February 5, 2023 1 contribution on Sunday, February 12, 2023 10 contributions on Sunday, February 19, 2023 6 contributions on Sunday, February 26, 2023 1 contribution on Sunday, March 5, 2023 4 contributions on Sunday, March 12, 2023 2 contributions on Sunday, March 19, 2023 2 contributions on Sunday, March 26, 2023 6 contributions on Sunday, April 2, 2023 2 contributions on Sunday, April 9, 2023 1 contribution on Sunday, April 16, 2023 3 contributions on Sunday, April 23, 2023 2 contributions on Sunday, April 30, 2023 2 contributions on Sunday, May 7, 2023 1 contribution on Sunday, May 14, 2023 5 contributions on Sunday, May 21, 2023 1 contribution on Sunday, May 28, 2023 1 contribution on Sunday, June 4, 2023 2 contributions on Sunday, June 11, 2023 2 contributions on Sunday, June 18, 2023 3 contributions on Sunday, June 25, 2023 3 contributions on Sunday, July 2, 2023 13 contributions on Sunday, July 9, 2023 3 contributions on Sunday, July 16, 2023 1 contribution on Sunday, July 23, 2023 1 contribution on Sunday, July 30, 2023 4 contributions on Sunday, August 6, 2023 4 contributions on Sunday, August 13, 2023 4 contributions on Sunday, August 20, 2023 27 contributions on Sunday, August 27, 2023 12 contributions on Sunday, September 3, 2023 14 contributions on Sunday, September 10, 2023 6 contributions on Sunday, September 17, 2023 9 contributions on Sunday, September 24, 2023
Monday 5 contributions on Monday, September 26, 2022 5 contributions on Monday, October 3, 2022 39 contributions on Monday, October 10, 2022 9 contributions on Monday, October 17, 2022 5 contributions on Monday, October 24, 2022 3 contributions on Monday, October 31, 2022 123 contributions on Monday, November 7, 2022 2 contributions on Monday, November 14, 2022 4 contributions on Monday, November 21, 2022 17 contributions on Monday, November 28, 2022 26 contributions on Monday, December 5, 2022 9 contributions on Monday, December 12, 2022 24 contributions on Monday, December 19, 2022 5 contributions on Monday, December 26, 2022 5 contributions on Monday, January 2, 2023 20 contributions on Monday, January 9, 2023 14 contributions on Monday, January 16, 2023 9 contributions on Monday, January 23, 2023 21 contributions on Monday, January 30, 2023 9 contributions on Monday, February 6, 2023 8 contributions on Monday, February 13, 2023 8 contributions on Monday, February 20, 2023 12 contributions on Monday, February 27, 2023 14 contributions on Monday, March 6, 2023 8 contributions on Monday, March 13, 2023 4 contributions on Monday, March 20, 2023 3 contributions on Monday, March 27, 2023 6 contributions on Monday, April 3, 2023 14 contributions on Monday, April 10, 2023 4 contributions on Monday, April 17, 2023 2 contributions on Monday, April 24, 2023 15 contributions on Monday, May 1, 2023 13 contributions on Monday, May 8, 2023 26 contributions on Monday, May 15, 2023 3 contributions on Monday, May 22, 2023 1 contribution on Monday, May 29, 2023 23 contributions on Monday, June 5, 2023 5 contributions on Monday, June 12, 2023 1 contribution on Monday, June 19, 2023 2 contributions on Monday, June 26, 2023 15 contributions on Monday, July 3, 2023 11 contributions on Monday, July 10, 2023 28 contributions on Monday, July 17, 2023 18 contributions on Monday, July 24, 2023 6 contributions on Monday, July 31, 2023 6 contributions on Monday, August 7, 2023 17 contributions on Monday, August 14, 2023 7 contributions on Monday, August 21, 2023 46 contributions on Monday, August 28, 2023 14 contributions on Monday, September 4, 2023 17 contributions on Monday, September 11, 2023 35 contributions on Monday, September 18, 2023 11 contributions on Monday, September 25, 2023
Tuesday 10 contributions on Tuesday, September 27, 2022 2 contributions on Tuesday, October 4, 2022 49 contributions on Tuesday, October 11, 2022 19 contributions on Tuesday, October 18, 2022 19 contributions on Tuesday, October 25, 2022 140 contributions on Tuesday, November 1, 2022 7 contributions on Tuesday, November 8, 2022 4 contributions on Tuesday, November 15, 2022 6 contributions on Tuesday, November 22, 2022 20 contributions on Tuesday, November 29, 2022 20 contributions on Tuesday, December 6, 2022 20 contributions on Tuesday, December 13, 2022 22 contributions on Tuesday, December 20, 2022 11 contributions on Tuesday, December 27, 2022 14 contributions on Tuesday, January 3, 2023 12 contributions on Tuesday, January 10, 2023 12 contributions on Tuesday, January 17, 2023 11 contributions on Tuesday, January 24, 2023 15 contributions on Tuesday, January 31, 2023 8 contributions on Tuesday, February 7, 2023 9 contributions on Tuesday, February 14, 2023 8 contributions on Tuesday, February 21, 2023 8 contributions on Tuesday, February 28, 2023 16 contributions on Tuesday, March 7, 2023 11 contributions on Tuesday, March 14, 2023 16 contributions on Tuesday, March 21, 2023 13 contributions on Tuesday, March 28, 2023 19 contributions on Tuesday, April 4, 2023 15 contributions on Tuesday, April 11, 2023 15 contributions on Tuesday, April 18, 2023 3 contributions on Tuesday, April 25, 2023 21 contributions on Tuesday, May 2, 2023 3 contributions on Tuesday, May 9, 2023 19 contributions on Tuesday, May 16, 2023 11 contributions on Tuesday, May 23, 2023 8 contributions on Tuesday, May 30, 2023 13 contributions on Tuesday, June 6, 2023 4 contributions on Tuesday, June 13, 2023 20 contributions on Tuesday, June 20, 2023 12 contributions on Tuesday, June 27, 2023 14 contributions on Tuesday, July 4, 2023 32 contributions on Tuesday, July 11, 2023 61 contributions on Tuesday, July 18, 2023 10 contributions on Tuesday, July 25, 2023 1 contribution on Tuesday, August 1, 2023 9 contributions on Tuesday, August 8, 2023 19 contributions on Tuesday, August 15, 2023 12 contributions on Tuesday, August 22, 2023 50 contributions on Tuesday, August 29, 2023 57 contributions on Tuesday, September 5, 2023 53 contributions on Tuesday, September 12, 2023 4 contributions on Tuesday, September 19, 2023 16 contributions on Tuesday, September 26, 2023
Wednesday 4 contributions on Wednesday, September 28, 2022 3 contributions on Wednesday, October 5, 2022 83 contributions on Wednesday, October 12, 2022 5 contributions on Wednesday, October 19, 2022 134 contributions on Wednesday, October 26, 2022 145 contributions on Wednesday, November 2, 2022 6 contributions on Wednesday, November 9, 2022 19 contributions on Wednesday, November 16, 2022 2 contributions on Wednesday, November 23, 2022 21 contributions on Wednesday, November 30, 2022 7 contributions on Wednesday, December 7, 2022 5 contributions on Wednesday, December 14, 2022 33 contributions on Wednesday, December 21, 2022 6 contributions on Wednesday, December 28, 2022 13 contributions on Wednesday, January 4, 2023 33 contributions on Wednesday, January 11, 2023 18 contributions on Wednesday, January 18, 2023 17 contributions on Wednesday, January 25, 2023 21 contributions on Wednesday, February 1, 2023 7 contributions on Wednesday, February 8, 2023 8 contributions on Wednesday, February 15, 2023 3 contributions on Wednesday, February 22, 2023 11 contributions on Wednesday, March 1, 2023 8 contributions on Wednesday, March 8, 2023 10 contributions on Wednesday, March 15, 2023 19 contributions on Wednesday, March 22, 2023 2 contributions on Wednesday, March 29, 2023 9 contributions on Wednesday, April 5, 2023 12 contributions on Wednesday, April 12, 2023 18 contributions on Wednesday, April 19, 2023 1 contribution on Wednesday, April 26, 2023 14 contributions on Wednesday, May 3, 2023 11 contributions on Wednesday, May 10, 2023 11 contributions on Wednesday, May 17, 2023 15 contributions on Wednesday, May 24, 2023 16 contributions on Wednesday, May 31, 2023 6 contributions on Wednesday, June 7, 2023 6 contributions on Wednesday, June 14, 2023 12 contributions on Wednesday, June 21, 2023 13 contributions on Wednesday, June 28, 2023 17 contributions on Wednesday, July 5, 2023 20 contributions on Wednesday, July 12, 2023 12 contributions on Wednesday, July 19, 2023 15 contributions on Wednesday, July 26, 2023 1 contribution on Wednesday, August 2, 2023 6 contributions on Wednesday, August 9, 2023 16 contributions on Wednesday, August 16, 2023 9 contributions on Wednesday, August 23, 2023 26 contributions on Wednesday, August 30, 2023 44 contributions on Wednesday, September 6, 2023 30 contributions on Wednesday, September 13, 2023 15 contributions on Wednesday, September 20, 2023 13 contributions on Wednesday, September 27, 2023
Thursday 6 contributions on Thursday, September 29, 2022 9 contributions on Thursday, October 6, 2022 11 contributions on Thursday, October 13, 2022 12 contributions on Thursday, October 20, 2022 83 contributions on Thursday, October 27, 2022 105 contributions on Thursday, November 3, 2022 10 contributions on Thursday, November 10, 2022 12 contributions on Thursday, November 17, 2022 8 contributions on Thursday, November 24, 2022 19 contributions on Thursday, December 1, 2022 8 contributions on Thursday, December 8, 2022 8 contributions on Thursday, December 15, 2022 11 contributions on Thursday, December 22, 2022 23 contributions on Thursday, December 29, 2022 19 contributions on Thursday, January 5, 2023 27 contributions on Thursday, January 12, 2023 24 contributions on Thursday, January 19, 2023 17 contributions on Thursday, January 26, 2023 7 contributions on Thursday, February 2, 2023 25 contributions on Thursday, February 9, 2023 7 contributions on Thursday, February 16, 2023 10 contributions on Thursday, February 23, 2023 14 contributions on Thursday, March 2, 2023 5 contributions on Thursday, March 9, 2023 4 contributions on Thursday, March 16, 2023 16 contributions on Thursday, March 23, 2023 2 contributions on Thursday, March 30, 2023 9 contributions on Thursday, April 6, 2023 15 contributions on Thursday, April 13, 2023 32 contributions on Thursday, April 20, 2023 35 contributions on Thursday, April 27, 2023 11 contributions on Thursday, May 4, 2023 8 contributions on Thursday, May 11, 2023 33 contributions on Thursday, May 18, 2023 1 contribution on Thursday, May 25, 2023 9 contributions on Thursday, June 1, 2023 17 contributions on Thursday, June 8, 2023 8 contributions on Thursday, June 15, 2023 2 contributions on Thursday, June 22, 2023 14 contributions on Thursday, June 29, 2023 6 contributions on Thursday, July 6, 2023 17 contributions on Thursday, July 13, 2023 8 contributions on Thursday, July 20, 2023 12 contributions on Thursday, July 27, 2023 2 contributions on Thursday, August 3, 2023 1 contribution on Thursday, August 10, 2023 8 contributions on Thursday, August 17, 2023 8 contributions on Thursday, August 24, 2023 31 contributions on Thursday, August 31, 2023 30 contributions on Thursday, September 7, 2023 15 contributions on Thursday, September 14, 2023 18 contributions on Thursday, September 21, 2023 10 contributions on Thursday, September 28, 2023
Friday 10 contributions on Friday, September 30, 2022 10 contributions on Friday, October 7, 2022 5 contributions on Friday, October 14, 2022 3 contributions on Friday, October 21, 2022 6 contributions on Friday, October 28, 2022 106 contributions on Friday, November 4, 2022 2 contributions on Friday, November 11, 2022 21 contributions on Friday, November 18, 2022 2 contributions on Friday, November 25, 2022 27 contributions on Friday, December 2, 2022 14 contributions on Friday, December 9, 2022 6 contributions on Friday, December 16, 2022 11 contributions on Friday, December 23, 2022 5 contributions on Friday, December 30, 2022 18 contributions on Friday, January 6, 2023 25 contributions on Friday, January 13, 2023 14 contributions on Friday, January 20, 2023 9 contributions on Friday, January 27, 2023 6 contributions on Friday, February 3, 2023 7 contributions on Friday, February 10, 2023 13 contributions on Friday, February 17, 2023 4 contributions on Friday, February 24, 2023 9 contributions on Friday, March 3, 2023 8 contributions on Friday, March 10, 2023 14 contributions on Friday, March 17, 2023 10 contributions on Friday, March 24, 2023 10 contributions on Friday, March 31, 2023 12 contributions on Friday, April 7, 2023 17 contributions on Friday, April 14, 2023 5 contributions on Friday, April 21, 2023 8 contributions on Friday, April 28, 2023 13 contributions on Friday, May 5, 2023 4 contributions on Friday, May 12, 2023 3 contributions on Friday, May 19, 2023 2 contributions on Friday, May 26, 2023 14 contributions on Friday, June 2, 2023 16 contributions on Friday, June 9, 2023 3 contributions on Friday, June 16, 2023 7 contributions on Friday, June 23, 2023 8 contributions on Friday, June 30, 2023 4 contributions on Friday, July 7, 2023 11 contributions on Friday, July 14, 2023 6 contributions on Friday, July 21, 2023 7 contributions on Friday, July 28, 2023 2 contributions on Friday, August 4, 2023 11 contributions on Friday, August 11, 2023 3 contributions on Friday, August 18, 2023 6 contributions on Friday, August 25, 2023 28 contributions on Friday, September 1, 2023 24 contributions on Friday, September 8, 2023 23 contributions on Friday, September 15, 2023 19 contributions on Friday, September 22, 2023
Saturday 1 contribution on Saturday, October 1, 2022 8 contributions on Saturday, October 8, 2022 2 contributions on Saturday, October 15, 2022 2 contributions on Saturday, October 22, 2022 1 contribution on Saturday, October 29, 2022 29 contributions on Saturday, November 5, 2022 1 contribution on Saturday, November 12, 2022 4 contributions on Saturday, November 19, 2022 1 contribution on Saturday, November 26, 2022 5 contributions on Saturday, December 3, 2022 4 contributions on Saturday, December 10, 2022 3 contributions on Saturday, December 17, 2022 5 contributions on Saturday, December 24, 2022 5 contributions on Saturday, December 31, 2022 3 contributions on Saturday, January 7, 2023 19 contributions on Saturday, January 14, 2023 1 contribution on Saturday, January 21, 2023 2 contributions on Saturday, January 28, 2023 15 contributions on Saturday, February 4, 2023 7 contributions on Saturday, February 11, 2023 44 contributions on Saturday, February 18, 2023 6 contributions on Saturday, February 25, 2023 2 contributions on Saturday, March 4, 2023 7 contributions on Saturday, March 11, 2023 3 contributions on Saturday, March 18, 2023 3 contributions on Saturday, March 25, 2023 3 contributions on Saturday, April 1, 2023 7 contributions on Saturday, April 8, 2023 2 contributions on Saturday, April 15, 2023 2 contributions on Saturday, April 22, 2023 1 contribution on Saturday, April 29, 2023 5 contributions on Saturday, May 6, 2023 9 contributions on Saturday, May 13, 2023 2 contributions on Saturday, May 20, 2023 1 contribution on Saturday, May 27, 2023 2 contributions on Saturday, June 3, 2023 2 contributions on Saturday, June 10, 2023 2 contributions on Saturday, June 17, 2023 6 contributions on Saturday, June 24, 2023 3 contributions on Saturday, July 1, 2023 13 contributions on Saturday, July 8, 2023 6 contributions on Saturday, July 15, 2023 2 contributions on Saturday, July 22, 2023 5 contributions on Saturday, July 29, 2023 33 contributions on Saturday, August 5, 2023 3 contributions on Saturday, August 12, 2023 4 contributions on Saturday, August 19, 2023 30 contributions on Saturday, August 26, 2023 4 contributions on Saturday, September 2, 2023 5 contributions on Saturday, September 9, 2023 3 contributions on Saturday, September 16, 2023 No contributions on Saturday, September 23, 2023

Contribution activity

September 2023

Created 3 repositories

Created a pull request in DefinitelyTyped/DefinitelyTyped that received 17 comments

Add for-each types

Please fill in this template. Use a meaningful title for the pull request. Include the name of the package modified. Test the change in your own…

+95 −0 17 comments
Reviewed 127 pull requests in 46 repositories
nodejs/citgm 23 pull requests
tc39/agendas 15 pull requests
nodejs/node 7 pull requests
tc39/notes 7 pull requests
import-js/eslint-plugin-import 6 pull requests
DefinitelyTyped/DefinitelyTyped 5 pull requests
tc39/test262 5 pull requests
openjs-foundation/cross-project-council 4 pull requests
airbnb/javascript 3 pull requests
jsx-eslint/eslint-plugin-react 3 pull requests
nvm-sh/nvm 3 pull requests
browserify/browserify-sign 3 pull requests
openjs-foundation/community-fund 3 pull requests
tc39/proposals 2 pull requests
tc39/how-we-work 2 pull requests
tc39/ecma262 2 pull requests
openjs-foundation/security-collab-space 2 pull requests
kangax/compat-table 2 pull requests
browserify/browserify 2 pull requests
openjs-foundation/standards 2 pull requests
inspect-js/is-equal 1 pull request
tc39/tc39.github.io 1 pull request
tc39/ecma402 1 pull request
nodejs/primordials-use-cases 1 pull request
oven-sh/bun 1 pull request
21 repositories not shown

Created an issue in tc39/proposal-regex-escaping that received 4 comments

Path to Stage 4!

Stage 4 committee approval two implementations significant in-the-field experience ecma262 PR approved prepare ecma262 PR merge test262 tests …

4 of 19 tasks
4 comments
Opened 6 other issues in 4 repositories
gorosgobe/proposal-negated-in-instanceof 1 closed 1 open
npm/cli 2 open
fabiospampinato/get-current-package 1 open
nodejs/Release 1 open
13 contributions in private repositories Sep 3 – Sep 24

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