Method _isImportNeededRecursive

server/src/analyzer/program.ts:512–533

(fileInfo: SourceFileInfo, recursionMap: { [path: string ]: boolean })

    }

    private _isImportNeededRecursive(fileInfo: SourceFileInfo, recursionMap: { [path: string ]: boolean }) {
        if (fileInfo.isTracked || fileInfo.isOpenByClient) {
            return true;
        }

        const filePath = fileInfo.sourceFile.getFilePath();

        // Avoid infinite recursion.
        if (recursionMap[filePath]) {
            return false;
        }

        recursionMap[filePath] = true;

        for (let importerInfo of fileInfo.importedBy) {
            if (this._isImportNeededRecursive(importerInfo, recursionMap)) {
                return true;
            }
        }

        return false;
    }

    private _updateSourceFileImports(sourceFileInfo: SourceFileInfo): SourceFileInfo[] {
        let filesAdded: SourceFileInfo[] = [];