source: trip-planner-front/node_modules/@babel/helper-split-export-declaration/lib/index.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.2 KB
Line 
1"use strict";
2
3Object.defineProperty(exports, "__esModule", {
4 value: true
5});
6exports.default = splitExportDeclaration;
7
8var _t = require("@babel/types");
9
10const {
11 cloneNode,
12 exportNamedDeclaration,
13 exportSpecifier,
14 identifier,
15 variableDeclaration,
16 variableDeclarator
17} = _t;
18
19function splitExportDeclaration(exportDeclaration) {
20 if (!exportDeclaration.isExportDeclaration()) {
21 throw new Error("Only export declarations can be split.");
22 }
23
24 const isDefault = exportDeclaration.isExportDefaultDeclaration();
25 const declaration = exportDeclaration.get("declaration");
26 const isClassDeclaration = declaration.isClassDeclaration();
27
28 if (isDefault) {
29 const standaloneDeclaration = declaration.isFunctionDeclaration() || isClassDeclaration;
30 const scope = declaration.isScope() ? declaration.scope.parent : declaration.scope;
31 let id = declaration.node.id;
32 let needBindingRegistration = false;
33
34 if (!id) {
35 needBindingRegistration = true;
36 id = scope.generateUidIdentifier("default");
37
38 if (standaloneDeclaration || declaration.isFunctionExpression() || declaration.isClassExpression()) {
39 declaration.node.id = cloneNode(id);
40 }
41 }
42
43 const updatedDeclaration = standaloneDeclaration ? declaration : variableDeclaration("var", [variableDeclarator(cloneNode(id), declaration.node)]);
44 const updatedExportDeclaration = exportNamedDeclaration(null, [exportSpecifier(cloneNode(id), identifier("default"))]);
45 exportDeclaration.insertAfter(updatedExportDeclaration);
46 exportDeclaration.replaceWith(updatedDeclaration);
47
48 if (needBindingRegistration) {
49 scope.registerDeclaration(exportDeclaration);
50 }
51
52 return exportDeclaration;
53 }
54
55 if (exportDeclaration.get("specifiers").length > 0) {
56 throw new Error("It doesn't make sense to split exported specifiers.");
57 }
58
59 const bindingIdentifiers = declaration.getOuterBindingIdentifiers();
60 const specifiers = Object.keys(bindingIdentifiers).map(name => {
61 return exportSpecifier(identifier(name), identifier(name));
62 });
63 const aliasDeclar = exportNamedDeclaration(null, specifiers);
64 exportDeclaration.insertAfter(aliasDeclar);
65 exportDeclaration.replaceWith(declaration.node);
66 return exportDeclaration;
67}
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