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@babel/parser(ts): Add parsing of type import (#9302)

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This commit is contained in:
Armano
2019-01-10 17:14:48 +01:00
committed by Henry Zhu
parent 8e051cae46
commit 2cc0376756
4 changed files with 492 additions and 2 deletions
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30
packages/babel-parser/src/plugins/typescript.js
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@@ -220,6 +220,28 @@ export default (superClass: Class<Parser>): Class<Parser> =>
return result;
}
tsParseImportType(): N.TsImportType {
const node: N.TsImportType = this.startNode();
this.expect(tt._import);
this.expect(tt.parenL);
if (!this.match(tt.string)) {
throw this.unexpected(
null,
"Argument in a type import must be a string literal",
);
}
node.argument = this.parseLiteral(this.state.value, "StringLiteral");
this.expect(tt.parenR);
if (this.eat(tt.dot)) {
node.qualifier = this.tsParseEntityName(/* allowReservedWords */ true);
}
if (this.isRelational("<")) {
node.typeParameters = this.tsParseTypeArguments();
}
return this.finishNode(node, "TSImportType");
}
tsParseEntityName(allowReservedWords: boolean): N.TsEntityName {
let entity: N.TsEntityName = this.parseIdentifier();
while (this.eat(tt.dot)) {
@@ -257,7 +279,11 @@ export default (superClass: Class<Parser>): Class<Parser> =>
tsParseTypeQuery(): N.TsTypeQuery {
const node: N.TsTypeQuery = this.startNode();
this.expect(tt._typeof);
node.exprName = this.tsParseEntityName(/* allowReservedWords */ true);
if (this.match(tt._import)) {
node.exprName = this.tsParseImportType();
} else {
node.exprName = this.tsParseEntityName(/* allowReservedWords */ true);
}
return this.finishNode(node, "TSTypeQuery");
}
@@ -645,6 +671,8 @@ export default (superClass: Class<Parser>): Class<Parser> =>
}
case tt._typeof:
return this.tsParseTypeQuery();
case tt._import:
return this.tsParseImportType();
case tt.braceL:
return this.tsLookAhead(this.tsIsStartOfMappedType.bind(this))
? this.tsParseMappedType()