Variables in a loop condition often are modified in the loop. If not, it's possibly a mistake.

Bad Practice

while (node) {
    doSomething(node);
}
node = other;

for (var j = 0; j < items.length; ++i) {
    doSomething(items[j]);
}

while (node !== root) {
    doSomething(node);
}

Recommended

while (node) {
    doSomething(node);
    node = node.parent;
}

for (var j = 0; j < items.length; ++j) {
    doSomething(items[j]);
}

// OK, the result of this binary expression is changed in this loop.
while (node !== root) {
    doSomething(node);
    node = node.parent;
}

// OK, the result of this ternary expression is changed in this loop.
while (node ? A : B) {
    doSomething(node);
    node = node.parent;
}

// A property might be a getter which has side effect...
// Or "doSomething" can modify "obj.foo".
while (obj.foo) {
    doSomething(obj);
}

// A function call can return various values.
while (check(obj)) {
    doSomething(obj);
}

blurt / blurt

No ignore rules found