installing handlebars-helpers in ghost

gistfile1.txt

// installing handlebars-helpers for V3 of ghost platform (current as of version 3.37)

// in your ghost install directory, run `yarn add handlebars-helpers` to install the package

// in your project directory of versions/YOUR_VERSION/core/frontend/helpers/index.js
// change L4 to be 
// const helpers = require('handlebars-helpers')();

// on production server, edit versions/YOUR_VERSION/node_modules/gscan/lib/spec.js
// remove the method body but keep the theme return value; without this change, themes using custom helpers will fail gscan
// and make your theme unable to be activated. 

// in your project directory of versions/YOUR_VERSION/core/frontend/services/themes/handlebars/helpers.js
// add the following or only the ones you need

    // handlebars-helpers
    registerThemeHelper('blockHelperMissing', coreHelpers.blockHelperMissing);
    registerThemeHelper('each', coreHelpers.each);
    registerThemeHelper('helperMissing', coreHelpers.helperMissing);
    registerThemeHelper('if', coreHelpers.if);
    registerThemeHelper('unless', coreHelpers.unless);
    registerThemeHelper('log', coreHelpers.log);
    registerThemeHelper('lookup', coreHelpers.lookup);
    registerThemeHelper('with', coreHelpers.with);
    registerThemeHelper('after', coreHelpers.after);
    registerThemeHelper('arrayify', coreHelpers.arrayify);
    registerThemeHelper('before', coreHelpers.before);
    registerThemeHelper('eachIndex', coreHelpers.eachIndex);
    registerThemeHelper('filter', coreHelpers.filter);
    registerThemeHelper('first', coreHelpers.first);
    registerThemeHelper('forEach', coreHelpers.forEach);
    registerThemeHelper('inArray', coreHelpers.inArray);
    registerThemeHelper('isArray', coreHelpers.isArray);
    registerThemeHelper('itemAt', coreHelpers.itemAt);
    registerThemeHelper('join', coreHelpers.join);
    registerThemeHelper('equalsLength', coreHelpers.equalsLength);
    registerThemeHelper('last', coreHelpers.last);
    registerThemeHelper('length', coreHelpers.length);
    registerThemeHelper('lengthEqual', coreHelpers.lengthEqual);
    registerThemeHelper('map', coreHelpers.map);
    registerThemeHelper('pluck', coreHelpers.pluck);
    registerThemeHelper('reverse', coreHelpers.reverse);
    registerThemeHelper('some', coreHelpers.some);
    registerThemeHelper('sort', coreHelpers.sort);
    registerThemeHelper('sortBy', coreHelpers.sortBy);
    registerThemeHelper('withAfter', coreHelpers.withAfter);
    registerThemeHelper('withBefore', coreHelpers.withBefore);
    registerThemeHelper('withFirst', coreHelpers.withFirst);
    registerThemeHelper('withGroup', coreHelpers.withGroup);
    registerThemeHelper('withLast', coreHelpers.withLast);
    registerThemeHelper('withSort', coreHelpers.withSort);
    registerThemeHelper('unique', coreHelpers.unique);
    registerThemeHelper('embed', coreHelpers.embed);
    registerThemeHelper('gist', coreHelpers.gist);
    registerThemeHelper('jsfiddle', coreHelpers.jsfiddle);
    registerThemeHelper('isEmpty', coreHelpers.isEmpty);
    registerThemeHelper('iterate', coreHelpers.iterate);
    registerThemeHelper('and', coreHelpers.and);
    registerThemeHelper('compare', coreHelpers.compare);
    registerThemeHelper('contains', coreHelpers.contains);
    registerThemeHelper('default', coreHelpers.default);
    registerThemeHelper('eq', coreHelpers.eq);
    registerThemeHelper('gt', coreHelpers.gt);
    registerThemeHelper('gte', coreHelpers.gte);
    registerThemeHelper('has', coreHelpers.has);
    registerThemeHelper('isFalsey', coreHelpers.isFalsey);
    registerThemeHelper('isTruthy', coreHelpers.isTruthy);
    registerThemeHelper('ifEven', coreHelpers.ifEven);
    registerThemeHelper('ifNth', coreHelpers.ifNth);
    registerThemeHelper('ifOdd', coreHelpers.ifOdd);
    registerThemeHelper('is', coreHelpers.is);
    registerThemeHelper('isnt', coreHelpers.isnt);
    registerThemeHelper('lt', coreHelpers.lt);
    registerThemeHelper('lte', coreHelpers.lte);
    registerThemeHelper('neither', coreHelpers.neither);
    registerThemeHelper('not', coreHelpers.not);
    registerThemeHelper('or', coreHelpers.or);
    registerThemeHelper('unlessEq', coreHelpers.unlessEq);
    registerThemeHelper('unlessGt', coreHelpers.unlessGt);
    registerThemeHelper('unlessLt', coreHelpers.unlessLt);
    registerThemeHelper('unlessGteq', coreHelpers.unlessGteq);
    registerThemeHelper('unlessLteq', coreHelpers.unlessLteq);
    registerThemeHelper('year', coreHelpers.year);
    registerThemeHelper('date', coreHelpers.date);
    registerThemeHelper('moment', coreHelpers.moment);
    registerThemeHelper('fileSize', coreHelpers.fileSize);
    registerThemeHelper('read', coreHelpers.read);
    registerThemeHelper('readdir', coreHelpers.readdir);
    registerThemeHelper('attr', coreHelpers.attr);
    registerThemeHelper('css', coreHelpers.css);
    registerThemeHelper('js', coreHelpers.js);
    registerThemeHelper('sanitize', coreHelpers.sanitize);
    registerThemeHelper('ul', coreHelpers.ul);
    registerThemeHelper('ol', coreHelpers.ol);
    registerThemeHelper('thumbnailImage', coreHelpers.thumbnailImage);
    registerThemeHelper('i18n', coreHelpers.i18n);
    registerThemeHelper('inflect', coreHelpers.inflect);
    registerThemeHelper('ordinalize', coreHelpers.ordinalize);
    registerThemeHelper('ok', coreHelpers.ok);
    registerThemeHelper('success', coreHelpers.success);
    registerThemeHelper('info', coreHelpers.info);
    registerThemeHelper('warning', coreHelpers.warning);
    registerThemeHelper('warn', coreHelpers.warn);
    registerThemeHelper('error', coreHelpers.error);
    registerThemeHelper('danger', coreHelpers.danger);
    registerThemeHelper('bold', coreHelpers.bold);
    registerThemeHelper('markdown', coreHelpers.markdown);
    registerThemeHelper('md', coreHelpers.md);
    registerThemeHelper('match', coreHelpers.match);
    registerThemeHelper('isMatch', coreHelpers.isMatch);
    registerThemeHelper('mm', coreHelpers.mm);
    registerThemeHelper('abs', coreHelpers.abs);
    registerThemeHelper('add', coreHelpers.add);
    registerThemeHelper('avg', coreHelpers.avg);
    registerThemeHelper('ceil', coreHelpers.ceil);
    registerThemeHelper('divide', coreHelpers.divide);
    registerThemeHelper('floor', coreHelpers.floor);
    registerThemeHelper('minus', coreHelpers.minus);
    registerThemeHelper('modulo', coreHelpers.modulo);
    registerThemeHelper('multiply', coreHelpers.multiply);
    registerThemeHelper('plus', coreHelpers.plus);
    registerThemeHelper('random', coreHelpers.random);
    registerThemeHelper('remainder', coreHelpers.remainder);
    registerThemeHelper('round', coreHelpers.round);
    registerThemeHelper('subtract', coreHelpers.subtract);
    registerThemeHelper('sum', coreHelpers.sum);
    registerThemeHelper('times', coreHelpers.times);
    registerThemeHelper('frame', coreHelpers.frame);
    registerThemeHelper('option', coreHelpers.option);
    registerThemeHelper('noop', coreHelpers.noop);
    registerThemeHelper('withHash', coreHelpers.withHash);
    registerThemeHelper('bytes', coreHelpers.bytes);
    registerThemeHelper('addCommas', coreHelpers.addCommas);
    registerThemeHelper('phoneNumber', coreHelpers.phoneNumber);
    registerThemeHelper('toAbbr', coreHelpers.toAbbr);
    registerThemeHelper('toExponential', coreHelpers.toExponential);
    registerThemeHelper('toFixed', coreHelpers.toFixed);
    registerThemeHelper('toFloat', coreHelpers.toFloat);
    registerThemeHelper('toInt', coreHelpers.toInt);
    registerThemeHelper('toPrecision', coreHelpers.toPrecision);
    registerThemeHelper('extend', coreHelpers.extend);
    registerThemeHelper('forIn', coreHelpers.forIn);
    registerThemeHelper('forOwn', coreHelpers.forOwn);
    registerThemeHelper('toPath', coreHelpers.toPath);
    registerThemeHelper('get', coreHelpers.get);
    registerThemeHelper('getObject', coreHelpers.getObject);
    registerThemeHelper('hasOwn', coreHelpers.hasOwn);
    registerThemeHelper('isObject', coreHelpers.isObject);
    registerThemeHelper('JSONparse', coreHelpers.JSONparse);
    registerThemeHelper('JSONstringify', coreHelpers.JSONstringify);
    registerThemeHelper('merge', coreHelpers.merge);
    registerThemeHelper('parseJSON', coreHelpers.parseJSON);
    registerThemeHelper('pick', coreHelpers.pick);
    registerThemeHelper('stringify', coreHelpers.stringify);
    registerThemeHelper('absolute', coreHelpers.absolute);
    registerThemeHelper('dirname', coreHelpers.dirname);
    registerThemeHelper('relative', coreHelpers.relative);
    registerThemeHelper('basename', coreHelpers.basename);
    registerThemeHelper('stem', coreHelpers.stem);
    registerThemeHelper('extname', coreHelpers.extname);
    registerThemeHelper('resolve', coreHelpers.resolve);
    registerThemeHelper('segments', coreHelpers.segments);
    registerThemeHelper('toRegex', coreHelpers.toRegex);
    registerThemeHelper('test', coreHelpers.test);
    registerThemeHelper('append', coreHelpers.append);
    registerThemeHelper('camelcase', coreHelpers.camelcase);
    registerThemeHelper('capitalize', coreHelpers.capitalize);
    registerThemeHelper('capitalizeAll', coreHelpers.capitalizeAll);
    registerThemeHelper('center', coreHelpers.center);
    registerThemeHelper('chop', coreHelpers.chop);
    registerThemeHelper('dashcase', coreHelpers.dashcase);
    registerThemeHelper('dotcase', coreHelpers.dotcase);
    registerThemeHelper('downcase', coreHelpers.downcase);
    registerThemeHelper('ellipsis', coreHelpers.ellipsis);
    registerThemeHelper('hyphenate', coreHelpers.hyphenate);
    registerThemeHelper('isString', coreHelpers.isString);
    registerThemeHelper('lowercase', coreHelpers.lowercase);
    registerThemeHelper('occurrences', coreHelpers.occurrences);
    registerThemeHelper('pascalcase', coreHelpers.pascalcase);
    registerThemeHelper('pathcase', coreHelpers.pathcase);
    registerThemeHelper('plusify', coreHelpers.plusify);
    registerThemeHelper('prepend', coreHelpers.prepend);
    registerThemeHelper('raw', coreHelpers.raw);
    registerThemeHelper('remove', coreHelpers.remove);
    registerThemeHelper('removeFirst', coreHelpers.removeFirst);
    registerThemeHelper('replace', coreHelpers.replace);
    registerThemeHelper('replaceFirst', coreHelpers.replaceFirst);
    registerThemeHelper('sentence', coreHelpers.sentence);
    registerThemeHelper('snakecase', coreHelpers.snakecase);
    registerThemeHelper('split', coreHelpers.split);
    registerThemeHelper('startsWith', coreHelpers.startsWith);
    registerThemeHelper('titleize', coreHelpers.titleize);
    registerThemeHelper('trim', coreHelpers.trim);
    registerThemeHelper('trimLeft', coreHelpers.trimLeft);
    registerThemeHelper('trimRight', coreHelpers.trimRight);
    registerThemeHelper('truncate', coreHelpers.truncate);
    registerThemeHelper('truncateWords', coreHelpers.truncateWords);
    registerThemeHelper('upcase', coreHelpers.upcase);
    registerThemeHelper('uppercase', coreHelpers.uppercase);
    registerThemeHelper('encodeURI', coreHelpers.encodeURI);
    registerThemeHelper('escape', coreHelpers.escape);
    registerThemeHelper('decodeURI', coreHelpers.decodeURI);
    registerThemeHelper('url_encode', coreHelpers.url_encode);
    registerThemeHelper('url_decode', coreHelpers.url_decode);
    registerThemeHelper('urlResolve', coreHelpers.urlResolve);
    registerThemeHelper('urlParse', coreHelpers.urlParse);
    registerThemeHelper('stripQuerystring', coreHelpers.stripQuerystring);
    registerThemeHelper('stripProtocol', coreHelpers.stripProtocol);