diff options
Diffstat (limited to 'node_modules/babel-helper-hoist-variables/lib/index.js')
-rw-r--r-- | node_modules/babel-helper-hoist-variables/lib/index.js | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/node_modules/babel-helper-hoist-variables/lib/index.js b/node_modules/babel-helper-hoist-variables/lib/index.js new file mode 100644 index 0000000..ba00137 --- /dev/null +++ b/node_modules/babel-helper-hoist-variables/lib/index.js @@ -0,0 +1,71 @@ +"use strict"; + +exports.__esModule = true; + +var _getIterator2 = require("babel-runtime/core-js/get-iterator"); + +var _getIterator3 = _interopRequireDefault(_getIterator2); + +exports.default = function (path, emit) { + var kind = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : "var"; + + path.traverse(visitor, { kind: kind, emit: emit }); +}; + +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 }; } + +var visitor = { + Scope: function Scope(path, state) { + if (state.kind === "let") path.skip(); + }, + Function: function Function(path) { + path.skip(); + }, + VariableDeclaration: function VariableDeclaration(path, state) { + if (state.kind && path.node.kind !== state.kind) return; + + var nodes = []; + + var declarations = path.get("declarations"); + var firstId = void 0; + + for (var _iterator = declarations, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + var declar = _ref; + + firstId = declar.node.id; + + if (declar.node.init) { + nodes.push(t.expressionStatement(t.assignmentExpression("=", declar.node.id, declar.node.init))); + } + + for (var name in declar.getBindingIdentifiers()) { + state.emit(t.identifier(name), name); + } + } + + if (path.parentPath.isFor({ left: path.node })) { + path.replaceWith(firstId); + } else { + path.replaceWithMultiple(nodes); + } + } +}; + +module.exports = exports["default"];
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