Error: Missing helper: "eq"
    at Object. (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19:13)
    at Object.helperWrapper (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/promised-handlebars/index.js:130:23)
    at Object. (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/promised-handlebars/lib/utils.js:29:28)
    at Object.wrapper (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/handlebars/dist/cjs/handlebars/internal/wrapHelper.js:15:19)
    at Object.eval [as main] (eval at createFunctionContext (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:260:23), :18:139)
    at main (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/handlebars/dist/cjs/handlebars/runtime.js:206:32)
    at ret (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/handlebars/dist/cjs/handlebars/runtime.js:210:12)
    at ret (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/handlebars/dist/cjs/handlebars/compiler/compiler.js:519:21)
    at prepareAndResolveMarkers (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/promised-handlebars/index.js:99:39)
    at /Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/promised-handlebars/lib/utils.js:29:28
    at HandlebarsAdapter.render (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/@frctl/handlebars/src/adapter.js:37:30)
    at ComponentSource._renderVariant (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/@frctl/fractal/src/api/components/source.js:212:30)
    at _renderVariant.next ()
    at onFulfilled (/Users/daniellehallett/Developer/TubeSpanner/styleguide/node_modules/co/index.js:65:19)