const { validate, config } = require( "bycontract" );

validate( 1, "number|string" );
console.log( `validate( 1, "number|string" ); - fine` );
try {
  validate( null, "number|string" );
} catch ( err ) {
  console.log( `validate( null, "number|string" ); - throws ${ err.message }` );
}
config({ enable: false });
try {
  validate( null, "number|string" );
  console.log( `validate( null, "number|string" ); `
    + `- throws nothing when validate.isEnabled = false` );
} catch ( err ) {
  console.log( `fail` );
}