fix build issues

[johba37]

all of these:

yarn install v1.21.1
[1/4] 🔍  Resolving packages...
[2/4] 🚚  Fetching packages...
warning file-loader@2.0.0: Invalid bin field for "file-loader".
[3/4] 🔗  Linking dependencies...
warning " > @babel/preset-es2015@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-arrow-functions@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-block-scoped-functions@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-block-scoping@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-classes@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-computed-properties@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-destructuring@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-duplicate-keys@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-for-of@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-function-name@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-instanceof@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-literals@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-modules-amd@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-modules-commonjs@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-modules-systemjs@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-modules-umd@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-object-super@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-parameters@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-regenerator@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-shorthand-properties@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-spread@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-sticky-regex@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-template-literals@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-typeof-symbol@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".
warning "@babel/preset-es2015 > @babel/plugin-transform-unicode-regex@7.0.0-beta.53" has incorrect peer dependency "@babel/core@>=7.0.0-beta.50 <7.0.0-rc.0".