prepack/lib/evaluators/ArrowFunctionExpression.js

Execute a JS bundle, serialize global state and side effects to a snapshot that can be quickly restored.

"use strict";

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

exports.default = function (ast, strictCode, env, realm) {
  let ConciseBody = ast.body;
  if (ConciseBody.type !== "BlockStatement") {
    ConciseBody = t.blockStatement([t.returnStatement(ConciseBody)]);
    // Use original array function's location for the new concise body.
    ConciseBody.loc = ast.body.loc;
  }

  // 1. If the function code for this ArrowFunction is strict mode code, let strict be true. Otherwise let strict be false.
  let strict = strictCode || (0, _strict2.default)(ast.body);

  // 2. Let scope be the LexicalEnvironment of the running execution context.
  let scope = env;

  // 3. Let parameters be CoveredFormalsList of ArrowParameters.
  let parameters = ast.params;

  // 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
  let closure = _singletons.Functions.FunctionCreate(realm, "arrow", parameters, ConciseBody, scope, strict);
  closure.loc = ast.loc;

  // 5. Return closure.
  return closure;
};

var _singletons = require("../singletons.js");

var _strict = require("../utils/strict.js");

var _strict2 = _interopRequireDefault(_strict);

var _babelTypes = require("babel-types");

var t = _interopRequireWildcard(_babelTypes);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

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