| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = splitExportDeclaration; |
| |
| function t() { |
| const data = _interopRequireWildcard(require("@babel/types")); |
| |
| t = function () { |
| return data; |
| }; |
| |
| return data; |
| } |
| |
| 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)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } } |
| |
| function splitExportDeclaration(exportDeclaration) { |
| if (!exportDeclaration.isExportDeclaration()) { |
| throw new Error("Only export declarations can be splitted."); |
| } |
| |
| const isDefault = exportDeclaration.isExportDefaultDeclaration(); |
| const declaration = exportDeclaration.get("declaration"); |
| const isClassDeclaration = declaration.isClassDeclaration(); |
| |
| if (isDefault) { |
| const standaloneDeclaration = declaration.isFunctionDeclaration() || isClassDeclaration; |
| const scope = declaration.isScope() ? declaration.scope.parent : declaration.scope; |
| let id = declaration.node.id; |
| let needBindingRegistration = false; |
| |
| if (!id) { |
| needBindingRegistration = true; |
| id = scope.generateUidIdentifier("default"); |
| |
| if (standaloneDeclaration || declaration.isFunctionExpression() || declaration.isClassExpression()) { |
| declaration.node.id = t().cloneNode(id); |
| } |
| } |
| |
| const updatedDeclaration = standaloneDeclaration ? declaration : t().variableDeclaration("var", [t().variableDeclarator(t().cloneNode(id), declaration.node)]); |
| const updatedExportDeclaration = t().exportNamedDeclaration(null, [t().exportSpecifier(t().cloneNode(id), t().identifier("default"))]); |
| exportDeclaration.insertAfter(updatedExportDeclaration); |
| exportDeclaration.replaceWith(updatedDeclaration); |
| |
| if (needBindingRegistration) { |
| scope.registerDeclaration(exportDeclaration); |
| } |
| |
| return exportDeclaration; |
| } |
| |
| if (exportDeclaration.get("specifiers").length > 0) { |
| throw new Error("It doesn't make sense to split exported specifiers."); |
| } |
| |
| const bindingIdentifiers = declaration.getOuterBindingIdentifiers(); |
| const specifiers = Object.keys(bindingIdentifiers).map(name => { |
| return t().exportSpecifier(t().identifier(name), t().identifier(name)); |
| }); |
| const aliasDeclar = t().exportNamedDeclaration(null, specifiers); |
| exportDeclaration.insertAfter(aliasDeclar); |
| exportDeclaration.replaceWith(declaration.node); |
| return exportDeclaration; |
| } |