jshint / jshint / 2836

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[[FIX]] Do not warn about non-ambiguous linebreaks

Warning W014 was implemented to alert users of potentially-confusing
formatting resulting from reliance on ASI.

The original heuristic was applied for every expression and simply
referenced token values. It assumed that when the previous token was a
closing parenthesis or bracket, this always signified a line of code
where the newline could be interpreted as a statement boundary, e.g.

    x = 3 * (2 + 1)
    [0]

However, this heuristic was susceptible to false positives, where the
closing punctuator would not be interpreted as the end of a statement:

    if (true)
      [x] = []

Re-implement the code that detects the warning condition from the
general "expression" function to the specific "infix" parsing logic
(used only when the "(" and "[" tokens have been identified as
components of an exiting expression).

6 of 6 new or added lines in 1 file covered. (100.0%)

4045 of 4096 relevant lines covered (98.75%)

14334.53 hits per line