Function verifyHunkIntegrity

src/patch/parse.ts:436–463

(hunk: Hunk)

}

export function verifyHunkIntegrity(hunk: Hunk) {
  // verify hunk integrity
  let originalLength = 0
  let patchedLength = 0
  for (const { type, lines } of hunk.parts) {
    switch (type) {
      case "context":
        patchedLength += lines.length
        originalLength += lines.length
        break
      case "deletion":
        originalLength += lines.length
        break
      case "insertion":
        patchedLength += lines.length
        break
      default:
        assertNever(type)
    }
  }

  if (
    originalLength !== hunk.header.original.length ||
    patchedLength !== hunk.header.patched.length
  ) {
    throw new Error("hunk header integrity check failed")
  }
}