chromium/ash/webui/common/resources/cellular_setup/tsconfig_base.json

{
  "extends": "../../../../../tools/typescript/tsconfig_base_polymer.json",
  "compilerOptions": {
    "typeRoots": ["../../../../../third_party/node/node_modules/@types"],
    "types": [
      "w3c-image-capture"
    ]
  }
}