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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/metro/src/node-haste/lib

Просмотр файла: AssetPaths.js.flow

/**
 * 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.
 *
 * @flow strict
 * @format
 * @oncall react_native
 */

import parsePlatformFilePath from './parsePlatformFilePath';
import path from 'path';

export type AssetPath = {
  assetName: string,
  name: string,
  platform: ?string,
  resolution: number,
  type: string,
};

const ASSET_BASE_NAME_RE = /(.+?)(@([\d.]+)x)?$/;

function parseBaseName(baseName: string): {
  resolution: number,
  rootName: string,
  ...
} {
  const match = baseName.match(ASSET_BASE_NAME_RE);
  if (!match) {
    throw new Error(`invalid asset name: \`${baseName}'`);
  }
  const rootName = match[1];
  if (match[3] != null) {
    const resolution = parseFloat(match[3]);
    if (!Number.isNaN(resolution)) {
      return {rootName, resolution};
    }
  }
  return {rootName, resolution: 1};
}

/**
 * Return `null` if the `filePath` doesn't have a valid extension, required
 * to describe the type of an asset.
 */
export function tryParse(
  filePath: string,
  platforms: $ReadOnlySet<string>,
): ?AssetPath {
  const result = parsePlatformFilePath(filePath, platforms);
  const {dirPath, baseName, platform, extension} = result;
  if (extension == null) {
    return null;
  }
  const {rootName, resolution} = parseBaseName(baseName);
  return {
    assetName: path.join(dirPath, `${rootName}.${extension}`),
    name: rootName,
    platform,
    resolution,
    type: extension,
  };
}

export function parse(
  filePath: string,
  platforms: $ReadOnlySet<string>,
): AssetPath {
  const result = tryParse(filePath, platforms);
  if (result == null) {
    throw new Error(`invalid asset file path: ${filePath}`);
  }
  return result;
}

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