ESLint error no-unneeded-ternary

Question

ESLint is telling me this error message inside my JS module: error no-unneeded-ternary Unnecessary use of conditional expression for default assignment

Answer 1

// Bad
foo(bar ? bar : 1);

// Good
foo(bar || 1);

This is how they say in Es-lint

Answer 2

You don't need a ternary when a simple val || defaultVal will do.