jest.config.js
module.exports = {
preset: 'ts-jest/presets/js-with-babel',
testEnvironment: 'jsdom',
collectCoverage: true,
// For some reason Jest is not measuring coverage without the below option.
// Unfortunately, despite `!(.test)`, it still measures coverage of test files as well:
forceCoverageMatch: ['./src/**/*!(.test).ts'],
// Since we're only measuring coverage for TypeScript (i.e. added with test infrastructure in place),
// we can be fairly strict. However, if you feel that something is not fit for coverage,
// mention why in a comment and mark it as ignored:
// https://github.com/gotwarlost/istanbul/blob/master/ignoring-code-for-coverage.md
coverageThreshold: {
global: {
branches: 100,
functions: 100,
lines: 100,
statements: 100
}
}
}