react-native/packages/react-native-fantom/runner/utils.js

/**
 * 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-local
 * @format
 * @oncall react_native
 */

import {spawnSync} from 'child_process';
import crypto from 'crypto';
import fs from 'fs';
import os from 'os';
// $FlowExpectedError[untyped-import]
import {SourceMapConsumer} from 'source-map';

const BUCK_ISOLATION_DIR = 'react-native-fantom-buck-out';

export function getBuckModesForPlatform(
  enableRelease: boolean = false,
): $ReadOnlyArray<string> {
  const mode = enableRelease ? 'opt' : 'dev';

  let osPlatform;
  switch (os.platform()) {
    case 'linux':
      osPlatform = `@//arvr/mode/linux/${mode}`;
      break;
    case 'darwin':
      osPlatform =
        os.arch() === 'arm64'
          ? `@//arvr/mode/mac-arm/${mode}`
          : `@//arvr/mode/mac/${mode}`;
      break;
    case 'win32':
      osPlatform = `@//arvr/mode/win/${mode}`;
      break;
    default:
      throw new Error(`Unsupported platform: ${os.platform()}`);
  }

  return ['@//xplat/mode/react-force-cxx-platform', osPlatform];
}

type SpawnResultWithOriginalCommand = {
  ...ReturnType<typeof spawnSync>,
  originalCommand: string,
  ...
};

export function runBuck2(args: Array<string>): SpawnResultWithOriginalCommand {
  // If these tests are already running from withing a buck2 process, e.g. when
  // they are scheduled by a `buck2 test` wrapper, calling `buck2` again would
  // cause a daemon-level deadlock.
  // To prevent this - explicitly pass custom `--isolation-dir`. Reuse the same
  // dir across tests (even running in different jest processes) to properly
  // employ caching.
  if (process.env.BUCK2_WRAPPER != null) {
    args.unshift('--isolation-dir', BUCK_ISOLATION_DIR);
  }

  const result = spawnSync('buck2', args, {
    encoding: 'utf8',
    env: {
      ...process.env,
      PATH: `/usr/local/bin:${process.env.PATH ?? ''}`,
    },
  });

  return {
    ...result,
    originalCommand: `buck2 ${args.join(' ')}`,
  };
}

export function getDebugInfoFromCommandResult(
  commandResult: SpawnResultWithOriginalCommand,
): string {
  const maybeSignal =
    commandResult.signal != null ? `, signal: ${commandResult.signal}` : '';
  const resultByStatus =
    commandResult.status === 0
      ? 'succeeded'
      : `failed (status code: ${commandResult.status}${maybeSignal})`;

  const logLines = [
    `Command ${resultByStatus}: ${commandResult.originalCommand}`,
    '',
    'stdout:',
    commandResult.stdout || '(empty)',
    '',
    'stderr:',
    commandResult.stderr || '(empty)',
  ];

  if (commandResult.error) {
    logLines.push('', 'error:', String(commandResult.error));
  }

  return logLines.join('\n');
}

export function getShortHash(contents: string): string {
  return crypto.createHash('md5').update(contents).digest('hex').slice(0, 8);
}

export function symbolicateStackTrace(
  sourceMapPath: string,
  stackTrace: string,
): string {
  const sourceMapData = JSON.parse(fs.readFileSync(sourceMapPath, 'utf8'));
  const consumer = new SourceMapConsumer(sourceMapData);

  return stackTrace
    .split('\n')
    .map(line => {
      const match = line.match(/at (.*) \((.*):(\d+):(\d+)\)/);
      if (match) {
        const functionName = match[1];
        // const fileName = match[2];
        const lineNumber = parseInt(match[3], 10);
        const columnNumber = parseInt(match[4], 10);
        // Get the original position
        const originalPosition = consumer.originalPositionFor({
          line: lineNumber,
          column: columnNumber,
        });
        return `at ${originalPosition.name ?? functionName} (${originalPosition.source}:${originalPosition.line}:${originalPosition.column})`;
      } else {
        return line;
      }
    })
    .join('\n');
}