chromium/chrome/browser/resources/side_panel/commerce/tsconfig_base.json

{
  "extends": "../../../../../tools/typescript/tsconfig_base_polymer.json",
  "compilerOptions": {
    "allowUmdGlobalAccess": true,
    "typeRoots": [ "../../../../../third_party/node/node_modules/@types" ],
    "types": [ "d3" ]
  }
}