Function withSupportedSyncEnv

src/ink/logUpdateFlickerRegression.test.ts:43–69

(fn: () => T)

}

function withSupportedSyncEnv<T>(fn: () => T): T {
  const previousTmux = process.env.TMUX
  const previousTermProgram = process.env.TERM_PROGRAM
  const previousTerm = process.env.TERM
  delete process.env.TMUX
  process.env.TERM_PROGRAM = 'WezTerm'
  process.env.TERM = 'wezterm'
  try {
    return fn()
  } finally {
    if (previousTmux === undefined) {
      delete process.env.TMUX
    } else {
      process.env.TMUX = previousTmux
    }
    if (previousTermProgram === undefined) {
      delete process.env.TERM_PROGRAM
    } else {
      process.env.TERM_PROGRAM = previousTermProgram
    }
    if (previousTerm === undefined) {
      delete process.env.TERM
    } else {
      process.env.TERM = previousTerm
    }
  }
}

function makeFrame({
  lines,