Chris Krycho

@chriskrycho.com

1795 Followers 142 Following

Anglican Christian. Software engineer, composer, theologian, writer, runner, photographer. Platform engineering at Vanta. Co-author of the Rust book. Previously front-end platform at LinkedIn; Ember TS & Framework teams alum. → chriskrycho.com

Screenshot of the macOS Terminal app’s settings pane, with most of it dimmed, showing the text rendering for the tabs being misaligned.
Screenshot of an iPad Safari window showing a paper displayed on alphaXiv, with the PDF shrunk to the point of illegibility while a chat-style assistant dominates the UI layout.
Picture of a box of Lagavulin Islay Single Malt Scotch Whiskey—The Distiller’s Edition sitting on a kitchen table; there is a bow on top.
An npm-stats monthly download stats chart for true-myth from initial release in October 2017 to the present, with slow-but-steady growth uptick over time.
Astronaut shooting astronaut meme, with the astronaut looking at Earth saying “Backwards compatibility is the hard part?!?” and the astronaut shooting saying “Always has been.”
Screenshot of part of a Slack message; it reads “cc @Chris Krycho for all things code quality”.
Screenshot of the Rover.com booking UI showing six-character random strings on every button and field instead of normal copy text.
Selection from the 2019 Book of Common Prayer which reads, “Almighty and everlasting God, you hate nothing you have made, and you forgive the sins of all who are penitent: Create and make in us new and contrite hearts, that we, worthily lamenting our sins and acknowledging our wretchedness, may obtain of you, the God of all mercy, perfect remission and forgiveness; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.”
A line chart showing many lines, each representing the time take to type check a package, all decreasing over a one-month span.
A line chart showing many lines, each representing the time take to type check a package, all decreasing over a one-month span.
A settings label with the text "Show in Status Bar" with an icon showing a Mac Menu Bar.
Screenshot from the Joan of Arc campaign from Age of Empires II
Isaiah 9:2–7 laid out in centered, gray serif type, which reads: The people who walked in darkness have seen a great light; those who dwelt in a land of deep darkness, on them has light shone. You have multiplied the nation; you have increased its joy; they rejoice before you as with joy at the harvest, as they are glad when they divide the spoil. For the yoke of his burden, and the staff for his shoulder, the rod of his oppressor, you have broken as on the day of Midian. For every boot of the tramping warrior in battle tumult and every garment rolled in blood will be burned as fuel for the fire. For to us a child is born, to us a son is given; and the government shall be upon his shoulder, and his name shall be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the increase of his government and of peace there will be no end, on the throne of David and over his kingdom, to establish it and to uphold it with justice and with righteousness from this time forth and forevermore. The zeal of the LORD of hosts will do this. (ESV)
Screenshot of the lap data and lap selector in the analysis view in TrainingPeaks, showing three laps selected, but only one highlighted, and only that lap’s data shown in the lap data pane.
Screenshot of a dev tools error view that starts with “Error: LocaleProvider not found in React component tree” and shows a stack trace.
Screenshot of the Settings app on macOS 15.7.1 showing the Accessibility pane with “Increase contrast” enabled, showing outlines around everything but also higher contrast otherwise.
Image that includes the following text: “True Myth 9.3.0 A new inspect method, some bug fixes, and some documentation fixes. Sym·poly·mathesy by Chris Krycho“ The “fi” ligature is very obviously not used.
Screenshot of the website design, with serif and sans-serif text.
Code sample that reads, “import type Maybe from 'true-myth/maybe'; const log = (value: unknown) => console.log("The value:", value); const randomInteger = () => Math.floor(Math.random() * Number.MAX_SAFE_INTEGER); const finalMaybe = Maybe.of(randomInteger()) .inspect(log) .map((n) => n % randomInteger()) .inspect(log) .andThen((n) => n % 2 === 0 ? Maybe.just(n / 2) : Maybe.nothing()) .inspect(log);”
A macOS error dialog with the Orion browser logo and the message, “Update Error! An error occurred while parsing the update feed.” The button reads “Cancel Update”
A man and a woman dancing romantically in a dark room with brightly colored lights.
The UC Health website displaying the welcome page for Microsoft IIS server tech.
A screenshot of a Google Docs page with red circles around the buttons for hiding the outline view and hiding the comments view.
Screenshot of iMessage conversation. The poster’s daughter asks, “May I pls have Creative time”. The poster responds, “Not with that kind of typing!” His daughter replies, “Okay Daddy. May I please have creative time?” He responds, “Indeed! Correct grammar and punctuation is the way to my heart. 😁”
Illustration of the relative sizes of HD (1920×1080), 4K (3940×2160), the APS-C crop of a Sony α7R V (6240×4160), 8K (7680×4320), and the full frame size of a Sony α7R V (9504×6336).
Screenshot showing Kaleidoscope app release notes, with a red box drawn around the following text to emphasize it: “Basic Integration with the Jujutsu (jj) version control system. • Jujutsu is listed in the Integration window with information how to set up Kaleidoscope as diff and merge tool with jj. • Changesets opened through jj diff or jj interdiff now show a bit more context.”
Screenshot of text that reads “Even this is reductive, though. It treats intelligence as a matter of facility. Living beings and humans in particular are not mere task-accomplishing machines. We have greater purposes. Playing games around a table does not “accomplish a task.” Neither does loving someone! Thus, we cannot say what intelligence per se requires of us. Not only does intelligence belong in different measures and wildly differing functions to many kinds of creatures; it is also the wrong starting point for thinking about ethical obligations. In fact, treating others’ intelligence as the basis of our ethical duties to them is perverse. This would imply that the more intelligent someone is, the deeper the obligation—and vice versa. Unborn infants, people suffering from progressive dementia, and severely mentally handicapped people would require less of us than a brilliant mathematician, scientist, composer, or poet. But our Lord teaches us the opposite: Whatever we have done to the least of his brothers and sisters, we have done to him (Matt. 25:40). Christians treasure and value humans of every capacity, not fixating on things like intellectual giftedness.”
Screenshot of a blank Google Docs document with AI suggestions for “Generate document” and “Help me write” along with non-AI “Templates” and “More”.
The First Day of Lent, Commonly Called Ash Wednesday. The Collect. Almighty and everlasting God, who hatest nothing that thou hast made, and dost forgive the sins of all those who are penitent: Create and make in us new and contrite hearts, that we, worthily lamenting our sins and acknowledging our wretchedness, may obtain of thee, the God of all mercy, perfect remission and forgiveness, through Jesus Christ our Lord. Amen.
Screenshot of the landing page for The Rust Programming Language book, featuring its normal text; the authors list includes “and Chris Krycho”, highlighted in yellow.
screenshot of text which reads “It’s hard work. It’s not cool. And I am nowhere near mastering it. I totally get it when people have an aversion to it, or think that the methods used today are wild. But mostly the methods are wild because the problem is, too. A straight-line solution to the problems of the front-end would be lovely, but those problems don’t really permit one.”
Mountains behind a lake, all very blue, in the early morning, with clouds drifting behind the lake and in front of the mountains.
A JavaScript code sample showing calling a function named try, and passing it a Promise which resolves to 'bwahahaha', producing a new value named `theTask`, and then calling a `match` method on `theTask`. However, the `try` function is italic instead of monospace: it is the Unicode italic characters 't', 'r', and 'y' rather than the normal characters for the same.
A GitHub pull request titled “feature: implement a new Task type” showing it is in the Merged state, with a snippet from the top of the PR description reading “Finally—*finally!*—True Myth get a `Task` type! A `Task<T, E>` is like a `Promise<Result<T, E>>`. In fact, under the hood, it is *exactly* a `Promise<Result<T, E>>`, but in general you do not need to think about that layering. Instead, you get a nice type-safe API for fallible async operations. (It’s what `Promise` should have been!)”
A Strava Year in Sport summary card showing 331 total days active, 3,624 miles total distance, 212,963 feet total elevation, and 365 hours total time.
The text of the collect for the first Sunday in Advent, reading: THE FIRST SUNDAY IN ADVENT Almighty God, give us grace to cast away the works of darkness, and put on the armor of light, now in the time of this mortal life in which your Son Jesus Christ came to visit us in great humility; that in the last day, when he shall come again in his glorious majesty to judge both the living and the dead, we may rise to the life immortal; through him who lives and reigns with you and the Holy Spirit, one God, now and for ever. Amen.
A screenshot of the Apple Photos app, showing a set of photo thumbnails in an album in the Shared Albums section, titled 2024 Krycho Thanksgiving. Nearly all the photos are mostly gray noise, with seeminly-random bits of color in them.
A screenshot from Apple Music, showing a heading, “Chill”, and four album covers: A Rush of Blood by Mark Petri, Saving Private Ryan by John Williams, Captain Phillips by Henry Jackman, and Atlas: Light – EP, by Sleeping At Last
Poster reads: “Celebrating 10M users #600,042; Chris Krycho, @chriskrycho.com, Joined Aug 17, 2024”
Description of a running workout with 5km each of warmup and cooldown, and a planned 20 intervals with 200m at mile pace and 200m at 10-seconds-slower-than-that pace. Described as “an open loop ending in failure” and “a true sufferfest” which is “impossible for any runner to complete… at the prescribed paces”.
GIF of Gandalf saying “I have no memory of this place”.
A Cargo.toml file for a `playground` crate, showing a bunch of Rust dependencies.
Printed-out pages of The Rust Programming Language with a red pen on top of them, beneath a computer monitor display.
Screenshot of Ulysses app’s goal progress display, showing 8,651 words out of a target of 6,000.
screen shot of command line `jj git push -c lxx`
A Safari window with a blank screen for Buttondown's "Subscribers" view.
Code sample showing use of JS' `Array.prototype.reduce` being applied via object access.