no-multi-spaces

禁止多个空格

一些该规则报告的问题可以通过 --fix 命令行选项 自动修复

一行中的多个不用于缩进的空格通常是错误的。例如：

if(foo  === "bar") {}

很难说，但是 foo 和 === 之间有两个空格。像这样的多个空格通常不赞成单个空格：

if(foo === "bar") {}

规则详情

该规则旨在禁止在逻辑表达式、条件表达式、声明、数组元素、对象属性、序列和函数参数周围出现多个空格。

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/*eslint no-multi-spaces: "error"*/

var a =  1;

if(foo   === "bar") {}

a <<  b

var arr = [1,  2];

a ?  b: c

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/*eslint no-multi-spaces: "error"*/

var a = 1;

if(foo === "bar") {}

a << b

var arr = [1, 2];

a ? b: c

选项

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ignoreEOLComments

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/*eslint no-multi-spaces: ["error", { ignoreEOLComments: false }]*/

var x = 5;      // comment
var x = 5;      /* multiline
 * comment
 */

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/*eslint no-multi-spaces: ["error", { ignoreEOLComments: false }]*/

var x = 5; // comment
var x = 5; /* multiline
 * comment
 */

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/*eslint no-multi-spaces: ["error", { ignoreEOLComments: true }]*/

var x = 5; // comment
var x = 5;      // comment
var x = 5; /* multiline
 * comment
 */
var x = 5;      /* multiline
 * comment
 */

exceptions

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Ba7IWdbGkE2Tnq20h5etKVCPYdoNWDRbcb6fAIgcQVbdmEjXVnUL3nWk+s+kn6vlItp67BSMQndvPfCOFYkXxMc+to96+/a059oI6zgxwBygdLKnrw1KFJDJvhl4fLtvXr3XehLZOHSiY6UUc5+wmMq5cLGHvvm/kYMT+bSRoCep9TyaRLNhXHw9Nuvq87Wwg+GqxTitJ9aZwUan4EkxQZA6VVjUnQ74tyk0JTJmHGbxWTjTzapehqCzH4owLoni7OSDOAtHcISdxeptr+Hr57uVhDT6RDvxWZRVfElU+Pw=

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/*eslint no-multi-spaces: "error"*/
/*eslint key-spacing: ["error", { align: "value" }]*/

var obj = {
    first:  "first",
    second: "second"
};

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/*eslint no-multi-spaces: ["error", { exceptions: { "Property": false } }]*/
/*eslint key-spacing: ["error", { align: "value" }]*/

var obj = {
    first:  "first",
    second: "second"
};

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/*eslint no-multi-spaces: ["error", { exceptions: { "BinaryExpression": true } }]*/

var a = 1  *  2;

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/*eslint no-multi-spaces: ["error", { exceptions: { "VariableDeclarator": true } }]*/

var someVar      = 'foo';
var someOtherVar = 'barBaz';

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/*eslint no-multi-spaces: ["error", { exceptions: { "ImportDeclaration": true } }]*/

import mod          from 'mod';
import someOtherMod from 'some-other-mod';

何时不使用

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