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node_modules/babel-register/lib/cache.js 1.42 KB
ce4c83ff   wxy   初始提交
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  "use strict";
  
  exports.__esModule = true;
  
  var _stringify = require("babel-runtime/core-js/json/stringify");
  
  var _stringify2 = _interopRequireDefault(_stringify);
  
  exports.save = save;
  exports.load = load;
  exports.get = get;
  
  var _path = require("path");
  
  var _path2 = _interopRequireDefault(_path);
  
  var _fs = require("fs");
  
  var _fs2 = _interopRequireDefault(_fs);
  
  var _mkdirp = require("mkdirp");
  
  var _homeOrTmp = require("home-or-tmp");
  
  var _homeOrTmp2 = _interopRequireDefault(_homeOrTmp);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  var FILENAME = process.env.BABEL_CACHE_PATH || _path2.default.join(_homeOrTmp2.default, ".babel.json");
  var data = {};
  
  function save() {
    var serialised = "{}";
  
    try {
      serialised = (0, _stringify2.default)(data, null, "  ");
    } catch (err) {
  
      if (err.message === "Invalid string length") {
        err.message = "Cache too large so it's been cleared.";
        console.error(err.stack);
      } else {
        throw err;
      }
    }
  
    (0, _mkdirp.sync)(_path2.default.dirname(FILENAME));
    _fs2.default.writeFileSync(FILENAME, serialised);
  }
  
  function load() {
    if (process.env.BABEL_DISABLE_CACHE) return;
  
    process.on("exit", save);
    process.nextTick(save);
  
    if (!_fs2.default.existsSync(FILENAME)) return;
  
    try {
      data = JSON.parse(_fs2.default.readFileSync(FILENAME));
    } catch (err) {
      return;
    }
  }
  
  function get() {
    return data;
  }