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TypeScript

Optional static type-checking for JavaScript.

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Four things can close the same quiz question, and three of them have to lose

Four things can close the same quiz question, and three of them have to lose

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6 min read
Three of our six FAQ answers disagree with the code, and the same array ships them to Google

Three of our six FAQ answers disagree with the code, and the same array ships them to Google

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6 min read
Our activation screen asks the local server where the website is, then hardcodes the price anyway

Our activation screen asks the local server where the website is, then hardcodes the price anyway

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7 min read
We had three copies of a nine-line timeout helper, so a stall in a job, a route and a cache were three different errors

We had three copies of a nine-line timeout helper, so a stall in a job, a route and a cache were three different errors

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6 min read
Promise.all on our rate limiter would make a rejected request spend the budget the rejection was protecting

Promise.all on our rate limiter would make a rejected request spend the budget the rejection was protecting

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6 min read
Two localStorage keys written by the same layout, one first touch and one last touch

Two localStorage keys written by the same layout, one first touch and one last touch

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4 min read
Unity-to-Cocos porting: shared kit, playable framework and visual validation

Unity-to-Cocos porting: shared kit, playable framework and visual validation

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2 min read
A 120,000-subscriber channel whose videos get 3,000 views is priced as a 46,000-subscriber one

A 120,000-subscriber channel whose videos get 3,000 views is priced as a 46,000-subscriber one

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5 min read
1,082 tests across six workspaces, no test framework installed, and four different ways of invoking the same runner

1,082 tests across six workspaces, no test framework installed, and four different ways of invoking the same runner

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6 min read
One correct answer is not a completed round: designing a stateful guessing API

One correct answer is not a completed round: designing a stateful guessing API

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3 min read
We let crawlers fetch the pages we never want indexed, because a Disallowed URL never reads its noindex

We let crawlers fetch the pages we never want indexed, because a Disallowed URL never reads its noindex

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5 min read
Next 16 renamed middleware to proxy.ts, and ours does three unrelated jobs

Next 16 renamed middleware to proxy.ts, and ours does three unrelated jobs

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5 min read
React equipment rental calendar

React equipment rental calendar

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6 min read
Three washers. One job. Zero locks.

Three washers. One job. Zero locks.

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3 min read
Room booking app with Next.js and Prisma

Room booking app with Next.js and Prisma

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10 min read
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