39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
"use strict";Object.defineProperty(exports, "__esModule", {value: true});var _types = require('../parser/tokenizer/types');
|
|
|
|
|
|
|
|
/**
|
|
* Common method sharing code between CJS and ESM cases, since they're the same here.
|
|
*/
|
|
function shouldElideDefaultExport(
|
|
isTypeScriptTransformEnabled,
|
|
keepUnusedImports,
|
|
tokens,
|
|
declarationInfo,
|
|
) {
|
|
if (!isTypeScriptTransformEnabled || keepUnusedImports) {
|
|
return false;
|
|
}
|
|
const exportToken = tokens.currentToken();
|
|
if (exportToken.rhsEndIndex == null) {
|
|
throw new Error("Expected non-null rhsEndIndex on export token.");
|
|
}
|
|
// The export must be of the form `export default a` or `export default a;`.
|
|
const numTokens = exportToken.rhsEndIndex - tokens.currentIndex();
|
|
if (
|
|
numTokens !== 3 &&
|
|
!(numTokens === 4 && tokens.matches1AtIndex(exportToken.rhsEndIndex - 1, _types.TokenType.semi))
|
|
) {
|
|
return false;
|
|
}
|
|
const identifierToken = tokens.tokenAtRelativeIndex(2);
|
|
if (identifierToken.type !== _types.TokenType.name) {
|
|
return false;
|
|
}
|
|
const exportedName = tokens.identifierNameForToken(identifierToken);
|
|
return (
|
|
declarationInfo.typeDeclarations.has(exportedName) &&
|
|
!declarationInfo.valueDeclarations.has(exportedName)
|
|
);
|
|
} exports.default = shouldElideDefaultExport;
|