depcheck/dist/special/jest.js

Check dependencies in your node module

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = parseJest;

var _path = _interopRequireDefault(require("path"));

var _lodash = _interopRequireDefault(require("lodash"));

var _file = require("../utils/file");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const _ = _lodash.default;
const jestConfigRegex = /^jest.([^.]+\.)?conf(ig|).js(on|)$/;
const supportedProperties = ['dependencyExtractor', 'preset', 'prettierPath', 'reporters', 'runner', 'setupFiles', 'setupFilesAfterEnv', 'snapshotResolver', 'snapshotSerializers', 'testEnvironment', 'testResultsProcessor', 'testRunner', 'transform', 'watchPlugins'];

function parse(content) {
  try {
    return JSON.parse(content);
  } catch (error) {
    return {}; // ignore parse error silently
  }
}

function contain(array, dep, prefix) {
  if (!array) {
    return false;
  }

  if (typeof array === 'string') {
    return contain([array], dep, prefix);
  } // extract name if wrapping with options


  const names = array.map(item => _lodash.default.isString(item) ? item : item[0]);

  if (names.indexOf(dep) !== -1) {
    return true;
  }

  if (prefix && dep.indexOf(prefix) === 0) {
    return contain(array, dep.substring(prefix.length), false);
  }

  return false;
}

function removeNodeModuleRelativePaths(filepath) {
  if (Array.isArray(filepath)) {
    return removeNodeModuleRelativePaths(filepath[0]);
  }

  return filepath.replace(/^.*node_modules\//, '').replace(/\/.*/, '');
}

function filter(deps, options) {
  const runner = deps.filter(dep => contain(options.runner, dep, 'jest-runner-'));
  const watchPlugins = deps.filter(dep => contain(options.watchPlugins, dep, 'jest-watch-'));
  const otherProps = (0, _lodash.default)(options).entries().map(([prop, value]) => {
    if (prop === 'transform') {
      return _.values(value).map(removeNodeModuleRelativePaths);
    }

    if (Array.isArray(value)) {
      return value.map(removeNodeModuleRelativePaths);
    }

    return removeNodeModuleRelativePaths(value);
  }).flatten().intersection(deps).value();
  return _.uniq(runner.concat(watchPlugins).concat(otherProps));
}

function checkOptions(deps, options = {}) {
  const pickedOptions = (0, _lodash.default)(options).pick(supportedProperties).value();
  return filter(deps, pickedOptions);
}

async function parseJest(filename, deps, rootDir) {
  const basename = _path.default.basename(filename);

  if (jestConfigRegex.test(basename)) {
    try {
      // eslint-disable-next-line global-require
      const options = require(filename) || {};
      return checkOptions(deps, options);
    } catch (error) {
      return [];
    }
  }

  const packageJsonPath = _path.default.resolve(rootDir, 'package.json');

  const resolvedFilePath = _path.default.resolve(rootDir, filename);

  if (resolvedFilePath === packageJsonPath) {
    const content = await (0, _file.getContent)(filename);
    const metadata = parse(content);
    return checkOptions(deps, metadata.jest);
  }

  return [];
}

module.exports = exports.default;