useStdin().setRawMode(false) on a non-TTY stdin silently no-opped while
setRawMode(true) threw — an asymmetry. Ink's handleSetRawMode throws before
the enable/disable split (App.tsx:315), so both directions throw on an
unsupported stdin, and its test asserts both mount-enable and unmount-disable
throw without ever calling stdin.setRawMode.
Move the isRawModeSupported guard into the public setRawMode wrapper (via a
shared throwRawModeUnsupported helper reusing the existing messages) so both
true/false throw. Internal acquireRawMode/releaseRawMode are unchanged —
composables (useInput/useFocus/usePaste) call those directly, so teardown
release stays a no-op and an unsupported-stdin app still unmounts cleanly.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Yunfei He
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