tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "moduleResolution": "node",
    "target": "es5",
    "lib": [
      "dom",
      "ES2017.Intl",
      "ES2018.Intl",
      "ES2020.Intl",
      "ESNext.Intl",
      "ES2015"
    ],
    "baseUrl": ".",
    "declaration": true,
    "strict": true,
    "resolveJsonModule": true,
    "noUnusedLocals": true,
    "esModuleInterop": true,
    "noUnusedParameters": true,
    "preserveConstEnums": true,
    "allowSyntheticDefaultImports": true,
    "noFallthroughCasesInSwitch": true,
    "declarationMap": true,
    "importHelpers": true,
    "jsx": "react",
    "typeRoots": [
      // Stop TS from climbing up the tree to arbitrary node_modules, thus
      // making build non-hermetic
      "./node_modules/@types",
      // This is for tests where working dir is formatjs/
      "../npm/node_modules/@types"
    ],
    "paths": {
      "@formatjs/*": [
        // k8 is 64-bit GNU/Linux output location, darwin is macOS.
        "bazel-out/k8-fastbuild/bin/packages/*",
        "bazel-out/darwin-fastbuild/bin/packages/*"
      ],
      "intl-messageformat": [
        "bazel-out/k8-fastbuild/bin/packages/intl-messageformat",
        "bazel-out/darwin-fastbuild/bin/packages/intl-messageformat"
      ],
      "babel-plugin-formatjs": [
        "bazel-out/k8-fastbuild/bin/packages/babel-plugin-formatjs",
        "bazel-out/darwin-fastbuild/bin/packages/babel-plugin-formatjs"
      ],
      "eslint-plugin-formatjs": [
        "bazel-out/k8-fastbuild/bin/packages/eslint-plugin-formatjs",
        "bazel-out/darwin-fastbuild/bin/packages/eslint-plugin-formatjs"
      ],
      "react-intl": [
        "bazel-out/k8-fastbuild/bin/packages/react-intl",
        "bazel-out/darwin-fastbuild/bin/packages/react-intl"
      ]
    }
  }
}