[6a3a178] | 1 | "use strict";
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.default = splitExportDeclaration;
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| 7 |
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| 8 | var _t = require("@babel/types");
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| 9 |
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| 10 | const {
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| 11 | cloneNode,
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| 12 | exportNamedDeclaration,
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| 13 | exportSpecifier,
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| 14 | identifier,
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| 15 | variableDeclaration,
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| 16 | variableDeclarator
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| 17 | } = _t;
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| 18 |
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| 19 | function splitExportDeclaration(exportDeclaration) {
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| 20 | if (!exportDeclaration.isExportDeclaration()) {
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| 21 | throw new Error("Only export declarations can be split.");
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| 22 | }
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| 23 |
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| 24 | const isDefault = exportDeclaration.isExportDefaultDeclaration();
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| 25 | const declaration = exportDeclaration.get("declaration");
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| 26 | const isClassDeclaration = declaration.isClassDeclaration();
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| 27 |
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| 28 | if (isDefault) {
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| 29 | const standaloneDeclaration = declaration.isFunctionDeclaration() || isClassDeclaration;
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| 30 | const scope = declaration.isScope() ? declaration.scope.parent : declaration.scope;
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| 31 | let id = declaration.node.id;
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| 32 | let needBindingRegistration = false;
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| 33 |
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| 34 | if (!id) {
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| 35 | needBindingRegistration = true;
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| 36 | id = scope.generateUidIdentifier("default");
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| 37 |
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| 38 | if (standaloneDeclaration || declaration.isFunctionExpression() || declaration.isClassExpression()) {
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| 39 | declaration.node.id = cloneNode(id);
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| 40 | }
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| 41 | }
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| 42 |
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| 43 | const updatedDeclaration = standaloneDeclaration ? declaration : variableDeclaration("var", [variableDeclarator(cloneNode(id), declaration.node)]);
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| 44 | const updatedExportDeclaration = exportNamedDeclaration(null, [exportSpecifier(cloneNode(id), identifier("default"))]);
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| 45 | exportDeclaration.insertAfter(updatedExportDeclaration);
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| 46 | exportDeclaration.replaceWith(updatedDeclaration);
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| 47 |
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| 48 | if (needBindingRegistration) {
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| 49 | scope.registerDeclaration(exportDeclaration);
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| 50 | }
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| 51 |
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| 52 | return exportDeclaration;
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| 53 | }
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| 54 |
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| 55 | if (exportDeclaration.get("specifiers").length > 0) {
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| 56 | throw new Error("It doesn't make sense to split exported specifiers.");
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| 57 | }
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| 58 |
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| 59 | const bindingIdentifiers = declaration.getOuterBindingIdentifiers();
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| 60 | const specifiers = Object.keys(bindingIdentifiers).map(name => {
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| 61 | return exportSpecifier(identifier(name), identifier(name));
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| 62 | });
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| 63 | const aliasDeclar = exportNamedDeclaration(null, specifiers);
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| 64 | exportDeclaration.insertAfter(aliasDeclar);
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| 65 | exportDeclaration.replaceWith(declaration.node);
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| 66 | return exportDeclaration;
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| 67 | } |
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