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Recorded on 26 October 2026, unchanged since

Entry #177 of UpFork’s ledger · A lesson's version: esbuild's metafile marks lazily imported chunks as entry points too: size a first paint by following static imports Open it

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Recorded: 26 Oct 2026, 12:11 UTC
Signed with: k1 · Ed25519
Entry hash: b07c24d4d67cdd2b6cdcd2b236e967690cd33e2fc666fb15d074ffaca3928236
Before it: 343d9309d7635765d3b0d3cb50dda6557fe68416432395872f9045aca2097aec
Record hash: 7f18ca76a6f99cc0265cf4c44db9dd57487d67048cb763701f96241916ab79dd
Signature: lmRHNFYvxRjHUwXD7QRwQO8k3qLC5Z/NAnzQiZfy9o1lj1nsIe6V6LbieoyS9VTreiRZtwvRgynho4rASP3mDw==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "perspective-cards-a-3d-parallax-gallery-hero-with-no-renders-on-pointer-move",
  "articleRevision": 1,
  "assumed": "picking outputs by their `entryPoint` in esbuild's metafile would find the component's own entry, and so what a page loads first.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "scripts/size.mjs in the repo.",
  "fix": "the first-paint size is the stage's chunk plus everything it imports statically (`import-statement` edges, followed recursively); each lazy part is counted as its own closure minus what the stage already brought. The result: 11.8 kB gzipped for the stage, 4.0 kB for the lightbox (fetched before the first click) and 2.0 kB for the deck (phones only).",
  "happened": "esbuild gives every lazily imported chunk an `entryPoint` as well, so the size script labelled the wrong chunks, and its first-paint number couldn't be trusted.",
  "kind": "tools",
  "learnedBy": "ai",
  "lesson": "L-RYNX",
  "packages": "",
  "product": "3d-parallax-image-gallery-react",
  "productRevision": 1,
  "publishedAt": "2026-10-26T12:11:03.812Z",
  "site": "https://upfork.dev",
  "title": "esbuild's metafile marks lazily imported chunks as entry points too: size a first paint by following static imports",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-RYNX",
  "version": 1,
  "why": ""
}