47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
import syntaxExportExtensions from "babel-plugin-syntax-export-extensions";
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export default function({ types: t }) {
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function build(node, nodes, scope) {
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const hasNoExportDefault = node.specifiers.every(
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specifier => !t.isExportDefaultSpecifier(specifier),
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);
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if (hasNoExportDefault) return;
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const specifier = node.specifiers.shift();
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const uid = scope.generateUidIdentifier(specifier.exported.name);
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let newSpecifier;
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if (t.isExportNamespaceSpecifier(specifier)) {
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newSpecifier = t.importNamespaceSpecifier(uid);
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} else {
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newSpecifier = t.importDefaultSpecifier(uid);
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}
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nodes.push(t.importDeclaration([newSpecifier], node.source));
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nodes.push(
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t.exportNamedDeclaration(null, [
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t.exportSpecifier(uid, specifier.exported),
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]),
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);
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build(node, nodes, scope);
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}
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return {
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inherits: syntaxExportExtensions,
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visitor: {
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ExportNamedDeclaration(path) {
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const { node, scope } = path;
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const nodes = [];
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build(node, nodes, scope);
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if (!nodes.length) return;
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if (node.specifiers.length >= 1) {
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nodes.push(node);
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}
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path.replaceWithMultiple(nodes);
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},
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},
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};
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}
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