no-wrap-func.md

规则名
no-wrap-func

Disallows unnecessary parentheses around function expressions.

(removed) This rule was removed in ESLint v1.0 and replaced by the no-extra-parens rule. The "functions" option in the new rule is equivalent to the removed rule.

Although it's possible to wrap functions in parentheses, this can be confusing when the code also contains immediately-invoked function expressions (IIFEs) since parentheses are often used to make this distinction. For example:

var foo = (function() {
    // IIFE
}());

var bar = (function() {
    // not an IIFE
});

规则详解

This rule will raise a warning when it encounters a function expression wrapped in parentheses with no following invoking parentheses.

Example of incorrect code for this rule:

var a = (function() {/*...*/});

此规则的 正确 代码实例：

::: correct

var a = function() {/*...*/};

(function() {/*...*/})();