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Add support for flow's export type * from (#617)

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This commit is contained in:
Nicolò Ribaudo
2017-07-12 05:56:04 +02:00
committed by Brian Ng
parent ff513df283
commit b0c3a9dcdd
10 changed files with 252 additions and 16 deletions
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42
src/parser/statement.js
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@@ -1208,20 +1208,9 @@ export default class StatementParser extends ExpressionParser {
// TODO: better type. Node is an N.AnyExport.
parseExport(node: N.Node): N.Node {
// export * from '...'
if (this.match(tt.star)) {
const specifier = this.startNode();
this.next();
if (this.hasPlugin("exportExtensions") && this.eatContextual("as")) {
specifier.exported = this.parseIdentifier(true);
node.specifiers = [
this.finishNode(specifier, "ExportNamespaceSpecifier"),
];
this.parseExportSpecifiersMaybe(node);
this.parseExportFrom(node, true);
} else {
this.parseExportFrom(node, true);
return this.finishNode(node, "ExportAllDeclaration");
}
if (this.shouldParseExportStar()) {
this.parseExportStar(node, this.hasPlugin("exportExtensions"));
if (node.type === "ExportAllDeclaration") return node;
} else if (
this.hasPlugin("exportExtensions") &&
this.isExportDefaultSpecifier()
@@ -1323,6 +1312,31 @@ export default class StatementParser extends ExpressionParser {
this.semicolon();
}
shouldParseExportStar(): boolean {
return this.match(tt.star);
}
parseExportStar(node: N.ExportNamedDeclaration, allowNamed: boolean): void {
this.expect(tt.star);
if (allowNamed && this.isContextual("as")) {
const specifier = this.startNodeAt(
this.state.lastTokStart,
this.state.lastTokStartLoc,
);
this.next();
specifier.exported = this.parseIdentifier(true);
node.specifiers = [
this.finishNode(specifier, "ExportNamespaceSpecifier"),
];
this.parseExportSpecifiersMaybe(node);
this.parseExportFrom(node, true);
} else {
this.parseExportFrom(node, true);
this.finishNode(node, "ExportAllDeclaration");
}
}
shouldParseExportDeclaration(): boolean {
return (
this.state.type.keyword === "var" ||