ES2015 migration aids
- 'for..in' is used instead of 'for..of'
Reports a usage of a for..in loop on an array.
- 'let' is used instead of 'const'
Reports a let declaration that can be made const.
- 'module.exports' is used instead of 'export'
Reports a module.export statement.
- 'require()' is used instead of 'import'
Reports a require() statement.
- 'var' is used instead of 'let' or 'const'
Reports a var declaration that is used instead of let or const.
- Function expression is used instead of arrow function
Reports a function expression.
- Indexed 'for' is used instead of 'for..of'
Reports an indexed for loop used on an array.
- String concatenation is used instead of template literal
Reports a string concatenation.