Substitute bitwise operation in ESLint

Question

I'm trying to apply this code: How to get XYZ coordinates of tile by click on Leaflet map - which contains bitwise operator "<<". In the environment that I'm running it on (NodeJS, ExpressJS, AngularJS), codes are checked by ESLint upon compiling it but I need the solution given on the link. I get this error on compilation .

Unexpected use of '<<' no-bitwise

According to this link: http://eslint.org/docs/rules/no-bitwise - ESLint disallows bitwise operators. Is there any way to bypass this rule or if not, provide an alternate calculation that produces similar results to bitwise operation '<<'?

I hope my question is clear, thanks.

Answer 1

You need to add the comment //eslint-disable-line no-bitwise on the line you'd like for es-lint to ignore

eg

var x = 5 << 5; //eslint-disable-line no-bitwise

Answer 2

对于 2 的幂，您可以使用Math.pow

const scale = Math.pow( 2, zoom );