index.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

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

var _fs = require("fs");

var _child_process = require("child_process");

var _helperPluginUtils = require("@babel/helper-plugin-utils");

var _istanbulLibInstrument = require("istanbul-lib-instrument");

var _testExclude = _interopRequireDefault(require("test-exclude"));

var _schema = _interopRequireDefault(require("@istanbuljs/schema"));

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

function getRealpath(n) {
  try {
    return (0, _fs.realpathSync)(n) ||
    /* istanbul ignore next */
    n;
  } catch (e) {
    /* istanbul ignore next */
    return n;
  }
}

const memoize = new Map();
/* istanbul ignore next */

const memosep = _path.default.sep === '/' ? ':' : ';';

function loadNycConfig(cwd, opts) {
  let memokey = cwd;
  const args = [_path.default.resolve(__dirname, 'load-nyc-config-sync.js'), cwd];

  if ('nycrcPath' in opts) {
    args.push(opts.nycrcPath);
    memokey += memosep + opts.nycrcPath;
  }
  /* execFileSync is expensive, avoid it if possible! */


  if (memoize.has(memokey)) {
    return memoize.get(memokey);
  }

  const result = JSON.parse((0, _child_process.execFileSync)(process.execPath, args));
  const error = result['load-nyc-config-sync-error'];

  if (error) {
    throw new Error(error);
  }

  const config = { ..._schema.default.defaults.babelPluginIstanbul,
    cwd,
    ...result
  };
  memoize.set(memokey, config);
  return config;
}

function findConfig(opts) {
  const cwd = getRealpath(opts.cwd || process.env.NYC_CWD ||
  /* istanbul ignore next */
  process.cwd());
  const keys = Object.keys(opts);
  const ignored = Object.keys(opts).filter(s => s === 'nycrcPath' || s === 'cwd');

  if (keys.length > ignored.length) {
    // explicitly configuring options in babel
    // takes precedence.
    return { ..._schema.default.defaults.babelPluginIstanbul,
      cwd,
      ...opts
    };
  }

  if (ignored.length === 0 && process.env.NYC_CONFIG) {
    // defaults were already applied by nyc
    return JSON.parse(process.env.NYC_CONFIG);
  }

  return loadNycConfig(cwd, opts);
}

function makeShouldSkip() {
  let exclude;
  return function shouldSkip(file, nycConfig) {
    if (!exclude || exclude.cwd !== nycConfig.cwd) {
      exclude = new _testExclude.default({
        cwd: nycConfig.cwd,
        include: nycConfig.include,
        exclude: nycConfig.exclude,
        extension: nycConfig.extension,
        // Make sure this is true unless explicitly set to `false`. `undefined` is still `true`.
        excludeNodeModules: nycConfig.excludeNodeModules !== false
      });
    }

    return !exclude.shouldInstrument(file);
  };
}

var _default = (0, _helperPluginUtils.declare)(api => {
  api.assertVersion(7);
  const shouldSkip = makeShouldSkip();
  const t = api.types;
  return {
    visitor: {
      Program: {
        enter(path) {
          this.__dv__ = null;
          this.nycConfig = findConfig(this.opts);
          const realPath = getRealpath(this.file.opts.filename);

          if (shouldSkip(realPath, this.nycConfig)) {
            return;
          }

          let {
            inputSourceMap
          } = this.opts;

          if (this.opts.useInlineSourceMaps !== false) {
            if (!inputSourceMap && this.file.inputMap) {
              inputSourceMap = this.file.inputMap.sourcemap;
            }
          }

          const visitorOptions = {};
          Object.entries(_schema.default.defaults.instrumentVisitor).forEach(([name, defaultValue]) => {
            if (name in this.nycConfig) {
              visitorOptions[name] = this.nycConfig[name];
            } else {
              visitorOptions[name] = _schema.default.defaults.instrumentVisitor[name];
            }
          });
          this.__dv__ = (0, _istanbulLibInstrument.programVisitor)(t, realPath, { ...visitorOptions,
            inputSourceMap
          });

          this.__dv__.enter(path);
        },

        exit(path) {
          if (!this.__dv__) {
            return;
          }

          const result = this.__dv__.exit(path);

          if (this.opts.onCover) {
            this.opts.onCover(getRealpath(this.file.opts.filename), result.fileCoverage);
          }
        }

      }
    }
  };
});

exports.default = _default;