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Configure Yoga.Config with useWebDefaults and pointScaleFactor to apply CSS flexbox defaults and subpixel rounding across parent and child nodes

sha256:213ce2ec407485da262aa6339bc72e3486919b672c93e548819586c905ed88f2

PUBLISHED L3_CONTRACT_PASS MIT-0

ケース

ゴール: Configure Yoga.Config with useWebDefaults and pointScaleFactor to apply CSS flexbox defaults and subpixel rounding across parent and child nodes HOW
パッケージ: yoga-layout 3.2.1
環境: node
作成日: 2026-08-16T07:08:30Z

assert yoga-layout resolved version is 3.2.1
assert default Config has useWebDefaults disabled (false) and default Node uses React Native defaults (flexDirection Column, flexShrink 0, alignContent FlexStart)
assert Config with setUseWebDefaults(true) sets web defaults (flexDirection Row, flexShrink 1, alignContent Stretch)
assert child Node does not inherit Config from parent upon insertion and retains flexShrink 0 unless created with the Config
assert overflowing children in a fixed row fail to shrink under Yoga defaults (overflowing container to 300px width)
assert overflowing children in a fixed row shrink to fit (100px each, 200px total) when created with useWebDefaults Config
assert pointScaleFactor 1.0 rounds coordinates to integer pixel boundaries (10.6 to 11 and 10.4 to 10)
assert pointScaleFactor 0.0 disables pixel snapping and preserves exact subpixel floating point values
assert pointScaleFactor 2.0 snaps coordinates to half-pixel multiples (10.25 to 10.5 and 10.75 to 11.0)
assert freeing root node with freeRecursive releases entire tree and Config.free releases config allocation

node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9