YDMmobile / oss
KOEN

Keyword / 7 entries

javascript

Writing with this keyword. All writing

Category
  1. 1

    Vitest Is Collecting Unrelated Tests? Start with the File List

    If Vitest reports a failure in a test file you do not recognize, inspect the file path before changing assertions, timeouts, or worker settings. A test collected from a tool's cache needs a different fix from a failing test in your application. The useful question is specific: which files did this invocation discover,…

    EN2026-10-23

  2. 2

    The Export Line Was Not the Documentation

    I found the symbol in one search. That line looked generous. It gave me the function name. It showed two arguments. It even showed that the options object and status both have defaults. I could have written the documentation immediately. I would have documented the shape and guessed the behavior. The export line…

    EN2026-10-08

  3. 3

    The Mobile Screenshot Was 390 Pixels Wide and Still Lied About the Viewport

    A 390-pixel-wide capture showed horizontal overflow. The visual review appeared to have found a mobile layout bug. Except it had not. Headless Chrome had kept an approximately 500-pixel layout viewport and cropped the image to 390 pixels. The screenshot dimensions were correct. The page geometry behind them was not.…

    EN2026-09-29

  4. 4

    An English File Does Not Make a Bilingual Route

    Part 3 of The Portfolio Is an Interface. I added English post routes to my portfolio and used a condition that looked impossible to misunderstand: If a post has English, generate /posts/<slug>/en. What could possibly go wrong? Three of the six posts in that first corpus answered the question. They were English-only…

    EN2026-08-20

  5. 5

    Your Public Resume Should Be a Projection, Not a File Read

    Part 1 of The Portfolio Is an Interface. I wanted one resume file to feed everything: the Korean page, the English page, the printable documents, and the work pages on my portfolio. One source of truth, fewer places for a date or sentence to drift. Very tidy. Then I wrote a test fixture with a fake phone number in it…

    EN2026-08-19

  6. 6

    You Don't Choose Your Scraping Strategy — the Platform's API Surface Does

    I wanted the same boring thing twice: pull my own chat history out of an AI product and save it as Markdown. Once for Claude, once for Gemini. Same author, same monorepo, same output format, same week. I assumed I'd write one script and copy-paste it with the hostname swapped. I ended up with two scripts that share…

    EN2026-07-18

  7. 7

    The async Keyword That Eats Your Errors: Why new Promise(async ...) Is a Trap

    One tiny keyword, and your rejections quietly walk off the job. If you've ever chased an Uncaught (in promise) red box whose stack trace points at absolutely nothing useful — some framework internal, three layers away from any code you wrote — you already know the specific flavor of despair I'm talking about. The…

    KO / EN2026-07-13