E0053: missing property name between '.' and '.'

The . operator accesses an object's property. It is a syntax error to write two . in a row without a property name in between:

console.log(`My bestie is ${me..name}`);

let favoriteLanguage = 'Lua';
console.log('I love ' .. favoriteLanguage .. '!');

To fix this error, write the property name between the two .s:

console.log(`My bestie is ${me.bestFriend.name}`);

Alternatively, concatenate strings using + instead of ..:

let favoriteLanguage = 'Lua';
console.log('I love ' + favoriteLanguage + '!');

Introduced in quick-lint-js version 0.2.0.