Function tryAddToExistingImport

test/fixtures/snapshot/typescript.js:153272–153312

(existingImports, isValidTypeOnlyUseSite, checker, compilerOptions)

            return 1 /* AddAsTypeOnly.Allowed */;
        }
        function tryAddToExistingImport(existingImports, isValidTypeOnlyUseSite, checker, compilerOptions) {
            return ts.firstDefined(existingImports, function (_a) {
                var declaration = _a.declaration, importKind = _a.importKind, symbol = _a.symbol, targetFlags = _a.targetFlags;
                if (importKind === 3 /* ImportKind.CommonJS */ || importKind === 2 /* ImportKind.Namespace */ || declaration.kind === 265 /* SyntaxKind.ImportEqualsDeclaration */) {
                    // These kinds of imports are not combinable with anything
                    return undefined;
                }
                if (declaration.kind === 254 /* SyntaxKind.VariableDeclaration */) {
                    return (importKind === 0 /* ImportKind.Named */ || importKind === 1 /* ImportKind.Default */) && declaration.name.kind === 201 /* SyntaxKind.ObjectBindingPattern */
                        ? { kind: 2 /* ImportFixKind.AddToExisting */, importClauseOrBindingPattern: declaration.name, importKind: importKind, moduleSpecifier: declaration.initializer.arguments[0].text, addAsTypeOnly: 4 /* AddAsTypeOnly.NotAllowed */ }
                        : undefined;
                }
                var importClause = declaration.importClause;
                if (!importClause || !ts.isStringLiteralLike(declaration.moduleSpecifier))
                    return undefined;
                var name = importClause.name, namedBindings = importClause.namedBindings;
                // A type-only import may not have both a default and named imports, so the only way a name can
                // be added to an existing type-only import is adding a named import to existing named bindings.
                if (importClause.isTypeOnly && !(importKind === 0 /* ImportKind.Named */ && namedBindings))
                    return undefined;
                // N.B. we don't have to figure out whether to use the main program checker
                // or the AutoImportProvider checker because we're adding to an existing import; the existence of
                // the import guarantees the symbol came from the main program.
                var addAsTypeOnly = getAddAsTypeOnly(isValidTypeOnlyUseSite, /*isForNewImportDeclaration*/ false, symbol, targetFlags, checker, compilerOptions);
                if (importKind === 1 /* ImportKind.Default */ && (name || // Cannot add a default import to a declaration that already has one
                    addAsTypeOnly === 2 /* AddAsTypeOnly.Required */ && namedBindings // Cannot add a default import as type-only if the import already has named bindings
                ))
                    return undefined;
                if (importKind === 0 /* ImportKind.Named */ &&
                    (namedBindings === null || namedBindings === void 0 ? void 0 : namedBindings.kind) === 268 /* SyntaxKind.NamespaceImport */ // Cannot add a named import to a declaration that has a namespace import
                )
                    return undefined;
                return {
                    kind: 2 /* ImportFixKind.AddToExisting */,
                    importClauseOrBindingPattern: importClause,
                    importKind: importKind,
                    moduleSpecifier: declaration.moduleSpecifier.text,
                    addAsTypeOnly: addAsTypeOnly,
                };
            });
        }
        function createExistingImportMap(checker, importingFile, compilerOptions) {
            var importMap;
            for (var _i = 0, _a = importingFile.imports; _i < _a.length; _i++) {