lib/rules/no-unused-vars.js
function isInside(inner, outer) {
            return (
                inner.range[0] >= outer.range[0] &&
                inner.range[1] <= outer.range[1]
            );
        }
function isInside(inner, outer) {
            return (
                inner.range[0] >= outer.range[0] &&
                inner.range[1] <= outer.range[1]
            );
        }
function isInside ( inner , outer ) { return ( inner . range [ 0 ] >= outer . range [ 0 ] && inner . range [ 1 ] <= outer . range [ 1 ] ) ; }
Checks the position of given nodes.

@param {ASTNode} inner - A node which is expected as inside.
@param {ASTNode} outer - A node which is expected as outside.
@returns {boolean} `true` if the `inner` node exists in the `outer` node.
@private
Checks the position of given nodes .