tsconfig.json

{
  "extends": "./node_modules/@polkadot/dev/config/tsconfig",
  "compilerOptions": {
    "baseUrl": ".",
    "paths": {
      "@polkadot/chainspec": [ "packages/chainspec/src" ],
      "@polkadot/chainspec/*": [ "packages/chainspec/src/*" ],
      "@polkadot/db": [ "packages/db/src" ],
      "@polkadot/db/*": [ "packages/db/src/*" ],
      "@polkadot/keyring": [ "packages/keyring/src" ],
      "@polkadot/keyring/*": [ "packages/keyring/src/*" ],
      "@polkadot/trie-codec": [ "packages/trie-codec/src" ],
      "@polkadot/trie-codec/*": [ "packages/trie-codec/src/*" ],
      "@polkadot/trie-db": [ "packages/trie-db/src" ],
      "@polkadot/trie-db/*": [ "packages/trie-db/src/*" ],
      "@polkadot/trie-hash": [ "packages/trie-hash/src" ],
      "@polkadot/trie-hash/*": [ "packages/trie-hash/src/*" ],
      "@polkadot/util-crypto": [ "packages/util-crypto/src" ],
      "@polkadot/util-crypto/*": [ "packages/util-crypto/src/*" ],
      "@polkadot/util-rlp": [ "packages/util-rlp/src" ],
      "@polkadot/util-rlp/*": [ "packages/util-rlp/src/*" ],
      "@polkadot/util": [ "packages/util/src" ],
      "@polkadot/util/*": [ "packages/util/src/*" ]
    },
    "typeRoots": [
      "./node_modules/@polkadot/ts",
      "./node_modules/@types"
    ]
  }
}