deepseek-ai/deepseek-harness · error · FsError

FS_NOT_TEXT

FS_NOT_TEXT

Error message

cannot read "${target.displayPath}": binary file

What it means

Error "cannot read "${target.displayPath}": binary file" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/fs/fs-local/src/fsio.ts:380

    throw new FsError(`cannot ${verb} "${target.displayPath}": not found`, 'FS_NOT_FOUND')
  }
  if (!info.isFile()) throw new FsError(`cannot ${verb} "${target.displayPath}": not a regular file`, 'FS_NOT_REGULAR_FILE')
  return info
}

/**
 * Read a whole regular UTF-8 text file into a single decoded string. Rejects
 * non-regular files, invalid UTF-8, and NUL-byte binary samples.
 * @param target - the resolved file to read.
 * @param signal - aborts the read (`FS_ABORTED`).
 * @returns the full decoded text, byte-for-byte (no normalization).
 */
export async function readWholeText(target: LocalTarget, signal?: AbortSignal): Promise<string> {
  await statRegularFile(target, 'read', signal)
  const raw = await readFileAbortable(target.targetKey, 'read', signal)
  throwIfAborted(signal, 'read')
  if (raw.subarray(0, BINARY_SAMPLE_BYTES).includes(0)) {
    throw new FsError(`cannot read "${target.displayPath}": binary file`, 'FS_NOT_TEXT')
  }
  return decodeUtf8(raw, 'read', target.displayPath)
}

/**
 * Read a whole regular file as raw bytes with no decoding or binary rejection.
 * `maxBytes` bounds the complete content: the stat size short-circuits an
 * oversized file before any content I/O, and the stream reads at most one byte
 * beyond the cap so a file growing after stat cannot cause unbounded buffering.
 * @param target - the resolved file to read.
 * @param signal - aborts the read (`FS_ABORTED`).
 * @param maxBytes - inclusive byte cap on the complete content (`FS_TOO_LARGE`).
 * @param internals - test seam for a deterministic post-stat growth race.
 * @returns the full raw content, at most `maxBytes` long.
 */
export async function readWholeBytes(
  target: LocalTarget,
  signal: AbortSignal | undefined,

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/fs/fs-local/src/fsio.ts:380 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/fa24bf40bd775ed1. Report an issue: GitHub.