E0451: misleading use of ',' operator in conditional statement

Using comma operator within a conditional statement of a control block (if, for, while, switch) is misleading, because only the last expression will be used to evaluate the condition.

For example:

let N = 10;
for (let i = 0, j = N - 1; i < j, j >= 0; ++i, --j) {
  console.log(i, j);
}

Here, the statement i < j, j >= 0 will be evaluated as j >= 0, disregarding the first part (i < j) of the statement. In order to have both parts evaluated, a logical operator should be used instead of the comma operator.

let N = 10;
for (let i = 0, j = N - 1; i < j && j >= 0; ++i, --j) {
  console.log(i, j);
}

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