jshint / jshint / 2474

100%

push

travis-ci

[[FIX]] Correct behavior of singleGroups (#2951)

* [[FIX]] Correct behavior of singleGroups

The grouping operator may be necessary if the right-binding power of the
operator preceeding the "(" token is greater than the left-binding power
of the operator immediately following it.

The initial implementation approximated this behavior by using the
readily-accessible left-binding power of both operators. This heuristic
is not always accurate, however as in the following case:

    typeof (a + b);

Here, the necessity of the grouping operator is determined by the
right-binding power of the `typeof` operator.

Extend the Pratt parser to make the right-binding power available to all
null denotation ("nud") functions. Remove an invalid unit test exposed
by this improvement.

* fixup! [[FIX]] Correct behavior of singleGroups

7 of 7 new or added lines in 1 file covered. (100.0%)

3954 of 4049 relevant lines covered (97.65%)

6432.06 hits per line