Function doChangeNamedToNamespaceOrDefault

test/fixtures/snapshot/typescript.js:159439–159501

(sourceFile, program, changes, toConvert, shouldUseDefault)

            return ts.isPropertyAccessExpression(propertyAccessOrQualifiedName) ? propertyAccessOrQualifiedName.expression : propertyAccessOrQualifiedName.left;
        }
        function doChangeNamedToNamespaceOrDefault(sourceFile, program, changes, toConvert, shouldUseDefault) {
            if (shouldUseDefault === void 0) { shouldUseDefault = getShouldUseDefault(program, toConvert.parent); }
            var checker = program.getTypeChecker();
            var importDecl = toConvert.parent.parent;
            var moduleSpecifier = importDecl.moduleSpecifier;
            var toConvertSymbols = new ts.Set();
            toConvert.elements.forEach(function (namedImport) {
                var symbol = checker.getSymbolAtLocation(namedImport.name);
                if (symbol) {
                    toConvertSymbols.add(symbol);
                }
            });
            var preferredName = moduleSpecifier && ts.isStringLiteral(moduleSpecifier) ? ts.codefix.moduleSpecifierToValidIdentifier(moduleSpecifier.text, 99 /* ScriptTarget.ESNext */) : "module";
            function hasNamespaceNameConflict(namedImport) {
                // We need to check if the preferred namespace name (`preferredName`) we'd like to use in the refactored code will present a name conflict.
                // A name conflict means that, in a scope where we would like to use the preferred namespace name, there already exists a symbol with that name in that scope.
                // We are going to use the namespace name in the scopes the named imports being refactored are referenced,
                // so we look for conflicts by looking at every reference to those named imports.
                return !!ts.FindAllReferences.Core.eachSymbolReferenceInFile(namedImport.name, checker, sourceFile, function (id) {
                    var symbol = checker.resolveName(preferredName, id, 67108863 /* SymbolFlags.All */, /*excludeGlobals*/ true);
                    if (symbol) { // There already is a symbol with the same name as the preferred namespace name.
                        if (toConvertSymbols.has(symbol)) { // `preferredName` resolves to a symbol for one of the named import references we are going to transform into namespace import references...
                            return ts.isExportSpecifier(id.parent); // ...but if this reference is an export specifier, it will not be transformed, so it is a conflict; otherwise, it will be renamed and is not a conflict.
                        }
                        return true; // `preferredName` resolves to any other symbol, which will be present in the refactored code and so poses a name conflict.
                    }
                    return false; // There is no symbol with the same name as the preferred namespace name, so no conflict.
                });
            }
            var namespaceNameConflicts = toConvert.elements.some(hasNamespaceNameConflict);
            var namespaceImportName = namespaceNameConflicts ? ts.getUniqueName(preferredName, sourceFile) : preferredName;
            // Imports that need to be kept as named imports in the refactored code, to avoid changing the semantics.
            // More specifically, those are named imports that appear in named exports in the original code, e.g. `a` in `import { a } from "m"; export { a }`.
            var neededNamedImports = new ts.Set();
            var _loop_17 = function (element) {
                var propertyName = (element.propertyName || element.name).text;
                ts.FindAllReferences.Core.eachSymbolReferenceInFile(element.name, checker, sourceFile, function (id) {
                    var access = ts.factory.createPropertyAccessExpression(ts.factory.createIdentifier(namespaceImportName), propertyName);
                    if (ts.isShorthandPropertyAssignment(id.parent)) {
                        changes.replaceNode(sourceFile, id.parent, ts.factory.createPropertyAssignment(id.text, access));
                    }
                    else if (ts.isExportSpecifier(id.parent)) {
                        neededNamedImports.add(element);
                    }
                    else {
                        changes.replaceNode(sourceFile, id, access);
                    }
                });
            };
            for (var _i = 0, _a = toConvert.elements; _i < _a.length; _i++) {
                var element = _a[_i];
                _loop_17(element);
            }
            changes.replaceNode(sourceFile, toConvert, shouldUseDefault
                ? ts.factory.createIdentifier(namespaceImportName)
                : ts.factory.createNamespaceImport(ts.factory.createIdentifier(namespaceImportName)));
            if (neededNamedImports.size) {
                var newNamedImports = ts.arrayFrom(neededNamedImports.values()).map(function (element) {