no-empty.md

规则名	规则类型	关联规则
no-empty	suggestion	no-empty-function

Empty block statements, while not technically errors, usually occur due to refactoring that wasn't completed. They can cause confusion when reading code.

规则详解

This rule disallows empty block statements. This rule ignores block statements which contain a comment (for example, in an empty catch or finally block of a try statement to indicate that execution should continue regardless of errors).

此规则的 错误 代码实例：

/*eslint no-empty: "error"*/

if (foo) {
}

while (foo) {
}

switch(foo) {
}

try {
    doSomething();
} catch(ex) {

} finally {

}

此规则的 正确 代码实例：

::: correct

/*eslint no-empty: "error"*/

if (foo) {
    // empty
}

while (foo) {
    /* empty */
}

try {
    doSomething();
} catch (ex) {
    // continue regardless of error
}

try {
    doSomething();
} finally {
    /* continue regardless of error */
}

配置项

This rule has an object option for exceptions:

• "allowEmptyCatch": true allows empty catch clauses (that is, which do not contain a comment)

allowEmptyCatch

Examples of additional correct code for this rule with the { "allowEmptyCatch": true } option:

::: correct

/* eslint no-empty: ["error", { "allowEmptyCatch": true }] */
try {
    doSomething();
} catch (ex) {}

try {
    doSomething();
}
catch (ex) {}
finally {
    /* continue regardless of error */
}

禁用建议

If you intentionally use empty block statements then you can disable this rule.