Value Formatter Causing Custom Visual To Disappear

Hi.

I have sent you an email with the complete package in a zip file, such that the issue can be looked into. My externalJS property of "pbiviz.json" looks as below:

  "externalJS": [
    "node_modules/powerbi-visuals-utils-typeutils/lib/index.js",
    "node_modules/powerbi-visuals-utils-dataviewutils/lib/index.js",
    "node_modules/powerbi-visuals-utils-formattingutils/lib/index.js",
    "node_modules/d3/d3.min.js"
  ],

The "package.json" file looks as below:

{
  "name": "visual",
  "dependencies": {
    "@types/d3": "^3.5.41",
    "d3": "^3.5.5",
    "powerbi-visuals-utils-dataviewutils": "1.2.0",
    "powerbi-visuals-utils-formattingutils": "^3.0.2"
  }
}

The "tsconfig.json" file:

{
  "compilerOptions": {
    "allowJs": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "ES5",
    "sourceMap": true,
    "out": "./.tmp/build/visual.js"
  },
  "files": [
    ".api/v1.13.0/PowerBI-visuals.d.ts",
    "node_modules/powerbi-visuals-utils-dataviewutils/lib/index.d.ts",
    "node_modules/powerbi-visuals-utils-formattingutils/lib/index.d.ts",
    "src/settings.ts",
    "src/visual.ts"
  ]
}

I have put these in such that anyone else coming across this problem can check their files etc.

Regards