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- "use strict";
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = splitExportDeclaration;
-
- var t = _interopRequireWildcard(require("@babel/types"));
-
- function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
- function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } 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;
- }
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