Why ES6's Template literals not support by Standard?

[ole3021]

Hi i'm new to standard, and i love its simple and powerful.

But i have a question

i have write code like

const ms = new Date() - start
ctx.set('X-Response-Time', '${ms}ms')

but i got the warning on first line: " 'ms' is defined but never used at xx col xx ";

I wonder why this warning happen? i think it should be now take as a warning ( in Eslint it is not);
and it's there have a way to ignore this kind of warning?

Best wishes.

[LinusU]

Your code will set the header to the string "${ms}ms", you need to use backticks (```) in order to use template strings.

e.g.

const ms = new Date() - start
ctx.set('X-Response-Time', `${ms}ms`)

[ole3021]

ok，thanks