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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/metro-core/src

Просмотр файла: Terminal.d.ts

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 * @oncall react_native
 */

import type {Socket} from 'net';
import type {Writable} from 'stream';

type UnderlyingStream = Socket | Writable;
/**
 * We don't just print things to the console, sometimes we also want to show
 * and update progress. This utility just ensures the output stays neat: no
 * missing newlines, no mangled log lines.
 *
 *     const terminal = Terminal.default;
 *     terminal.status('Updating... 38%');
 *     terminal.log('warning: Something happened.');
 *     terminal.status('Updating, done.');
 *     terminal.persistStatus();
 *
 * The final output:
 *
 *     warning: Something happened.
 *     Updating, done.
 *
 * Without the status feature, we may get a mangled output:
 *
 *     Updating... 38%warning: Something happened.
 *     Updating, done.
 *
 * This is meant to be user-readable and TTY-oriented. We use stdout by default
 * because it's more about status information than diagnostics/errors (stderr).
 *
 * Do not add any higher-level functionality in this class such as "warning" and
 * "error" printers, as it is not meant for formatting/reporting. It has the
 * single responsibility of handling status messages.
 */
declare class Terminal {
  constructor(stream: UnderlyingStream, opts?: {ttyPrint?: boolean});
  waitForUpdates(): Promise<void>;
  /**
   * Useful for calling console/stdout directly after terminal logs
   * Otherwise, you could end up with mangled output when the queued
   * update starts writing to stream after a delay.
   */
  flush(): Promise<void>;
  /**
   * Shows some text that is meant to be overriden later. Return the previous
   * status that was shown and is no more. Calling `status()` with no argument
   * removes the status altogether. The status is never shown in a
   * non-interactive terminal: for example, if the output is redirected to a
   * file, then we don't care too much about having a progress bar.
   */
  status(format: string, ...args: Array<unknown>): string;
  /**
   * Similar to `console.log`, except it moves the status/progress text out of
   * the way correctly. In non-interactive terminals this is the same as
   * `console.log`.
   */
  log(format: string, ...args: Array<unknown>): void;
  /**
   * Log the current status and start from scratch. This is useful if the last
   * status was the last one of a series of updates.
   */
  persistStatus(): void;
}
export default Terminal;

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