Warning: Cannot read property 'filter' of undefined Use --force to continue.

[amiiit]

Trying to use with the following config similar to the docs:

module.exports = function(grunt) {
  grunt.initConfig({
    spreadsheet_to_json: {
      options: {
          keyfile: 'MY-APP-KEY-d2400e48869d.json',
          spreadsheetId: '1eCvbblOwZ---MYSPREADSHEET----rl0KP4xc89I'
      },
      content: {
        dest: 'translations/'
      }
    }
  });
  grunt.loadNpmTasks('grunt-spreadsheet-to-json');
};

Then the following code of this extensions throws an error:

            var src = f.src.filter(function (filepath) {
                // Warn on and remove invalid source files (if nonull was set).
                if (!grunt.file.exists(filepath)) {
                    grunt.log.warn('Source file "' + filepath + '" not found.');
                    return false;
                } else {
                    return true;
                }
            }).map(function (filepath) {
                // Read file source.
                return grunt.file.read(filepath);
            }).join(grunt.util.normalizelf(options.separator));

Since f.src is undefined we get the following error:

Warning: Cannot read property 'filter' of undefined Use --force to continue.

What kind of source files are expected exactly? As far as I understand the source is the spreadsheet and we just have a target file?

Thanks

[Schepp]

Honestly I don't remember anymore. But I have the strong suspicion that I left this part in from the original template from which I derived my plugin. Should be fine if you remove the aforementioned code part.

[stevetrask]

@amiiit did removing this fix your issue?