Function makeStyledLineFrame

src/ink/logUpdateFlickerRegression.test.ts:134–174

({
  line,
  styleId,
  viewportWidth = 80,
  viewportHeight = 10,
}: {
  line: string
  styleId: number
  viewportWidth?: number
  viewportHeight?: number
})

}

function makeStyledLineFrame({
  line,
  styleId,
  viewportWidth = 80,
  viewportHeight = 10,
}: {
  line: string
  styleId: number
  viewportWidth?: number
  viewportHeight?: number
}): Frame {
  const screen = createScreen(
    viewportWidth,
    1,
    stylePool,
    charPool,
    hyperlinkPool,
  )

  for (let x = 0; x < line.length; x += 1) {
    setCellAt(screen, x, 0, {
      char: line[x]!,
      styleId,
      width: CellWidth.Narrow,
      hyperlink: undefined,
    })
  }

  return {
    screen,
    viewport: {
      width: viewportWidth,
      height: viewportHeight,
    },
    cursor: {
      x: 0,
      y: 1,
      visible: true,
    },
  }
}

function findClearTerminalPatch(diff: Diff) {
  return diff.find(