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fix(cli): cap shell output at 10 MB to prevent RangeError crash (#24168)

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PROTHAM
2026-04-01 21:39:30 +05:30
committed by GitHub
parent eb95e99b3d
commit 7d1848d578
3 changed files with 248 additions and 6 deletions
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13
packages/cli/src/ui/constants.ts
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@@ -65,3 +65,16 @@ export const SKILLS_DOCS_URL =
/** Max lines to show for a compact tool subview (e.g. diff) */
export const COMPACT_TOOL_SUBVIEW_MAX_LINES = 15;
// Maximum number of UTF-16 code units to retain in a background task's output
// buffer. Beyond this, the oldest output is dropped to keep memory bounded.
// 10 MB is large enough for ~200,000 lines of terminal output and stays well
// below the V8 string length limit (~1 GB) even with multiple concurrent tasks.
export const MAX_SHELL_OUTPUT_SIZE = 10_000_000; // 10 MB
// Truncation is triggered only once the output exceeds
// MAX_SHELL_OUTPUT_SIZE + SHELL_OUTPUT_TRUNCATION_BUFFER, then sliced back to
// MAX_SHELL_OUTPUT_SIZE. This avoids an O(n) string copy on every appended
// chunk, amortizing the cost to once per SHELL_OUTPUT_TRUNCATION_BUFFER bytes
// of new input (i.e. once per ~1 MB on a busy shell).
export const SHELL_OUTPUT_TRUNCATION_BUFFER = 1_000_000; // 1 MB