nyc.config.js

const defaultExtension = [".js", ".cjs", ".mjs", ".ts", ".tsx", ".jsx"];
const testFileExtensions = defaultExtension.map((extension) => extension.slice(1)).join(",");
const defaultExclude = [
  "coverage/**",
  "packages/*/test{,s}/**",
  "**/*.d.ts",
  "test{,s}/**",
  `test{,-*}.{${testFileExtensions}}`,
  `**/*{.,-}test.{${testFileExtensions}}`,
  "**/__tests__/**",

  /* Exclude common development tool configuration files */
  "**/{ava,babel,nyc}.config.{js,cjs,mjs}",
  "**/jest.config.{js,cjs,mjs,ts}",
  "**/{karma,rollup,webpack}.config.js",
  "**/.{eslint,mocha}rc.{js,cjs}",
];

module.exports = {
  include: ["src/**"],
  exclude: ["src/examples/**", "src/setupTests.js"].concat(defaultExclude),
  reporter: ["html"],
  reportDir: "./coverageReport",
  tempDir: "./coverage",
  extension: defaultExtension,
  cwd: __dirname,
};