no-unsafe-plusplus
💼 This rule is enabled in the ✅ recommended config.
Disallows unsafe and confusing uses of the ++ and -- operators.
💠This rule requires type information.
Rule Details​
This rule heavily restricts the usage of the ++ and -- operators. Essentially, you are only allowed to use "foo++" in places where swapping it to "++foo" or "foo += 1" would have no functional change in the program.
This rule is meant to be used in conjunction with this prefer-plusplus and prefer-postfix-plusplus ESLint rules.
// Bad
(foo++, foo++, foo++);
for (foo++; ; ) {}
for (; foo++; ) {}
foo++ + foo++;
array[foo++];
// Good
foo++;
void foo++;
(foo++, foo++, 0);
for (; ; foo++) {}
Options​
This rule is not configurable.
Credits​
This rule was originally created by webstrand in the TypeScript Discord.