export default function shouldInstrument()

in packages/jest-transform/src/shouldInstrument.ts [33:119]
71 lines of code
22 McCabe index (conditional complexity)

export default function shouldInstrument(
  filename: string,
  options: ShouldInstrumentOptions,
  config: Config.ProjectConfig,
): boolean {
  if (!options.collectCoverage) {
    return false;
  }

  if (
    config.forceCoverageMatch.length &&
    micromatch.any(filename, config.forceCoverageMatch)
  ) {
    return true;
  }

  if (
    !config.testPathIgnorePatterns.some(pattern =>
      getRegex(pattern).test(filename),
    )
  ) {
    if (config.testRegex.some(regex => new RegExp(regex).test(filename))) {
      return false;
    }

    if (globsToMatcher(config.testMatch)(replacePathSepForGlob(filename))) {
      return false;
    }
  }

  if (
    // This configuration field contains an object in the form of:
    // {'path/to/file.js': true}
    options.collectCoverageOnlyFrom &&
    !options.collectCoverageOnlyFrom[filename]
  ) {
    return false;
  }

  if (
    // still cover if `only` is specified
    !options.collectCoverageOnlyFrom &&
    options.collectCoverageFrom.length &&
    !globsToMatcher(options.collectCoverageFrom)(
      replacePathSepForGlob(path.relative(config.rootDir, filename)),
    )
  ) {
    return false;
  }

  if (
    config.coveragePathIgnorePatterns.some(pattern => !!filename.match(pattern))
  ) {
    return false;
  }

  if (config.globalSetup === filename) {
    return false;
  }

  if (config.globalTeardown === filename) {
    return false;
  }

  if (config.setupFiles.includes(filename)) {
    return false;
  }

  if (config.setupFilesAfterEnv.includes(filename)) {
    return false;
  }

  if (MOCKS_PATTERN.test(filename)) {
    return false;
  }

  if (options.changedFiles && !options.changedFiles.has(filename)) {
    if (!options.sourcesRelatedToTestsInChangedFiles) {
      return false;
    }
    if (!options.sourcesRelatedToTestsInChangedFiles.has(filename)) {
      return false;
    }
  }

  return true;
}