eslint-config-alloy

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AlloyTeam ESLint 规则

alloyteam.github.io/eslint-config-alloy/

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{ "accessor-pairs": { "good": "// good setter 有对应的 getter\nconst foo = {\n set bar(value) {\n this.barValue = 'bar ' + value;\n },\n get bar() {\n return this.barValue;\n }\n};\n\n// good getter 可以没有对应的 setter\nconst bar = {\n get foo() {\n return this.fooValue;\n }\n};", "bad": "// bad 有 setter 却没有对应的 getter\nconst foo = {\n set bar(value) {\n return 'bar ' + value;\n }\n};" }, "array-callback-return": { "good": "// good 数组的 map 方法的回调函数有返回值\r\nlet foo = [1, 2, 3].map((num) => {\r\n return num * num;\r\n});", "bad": "// bad 数组的 map 方法的回调函数缺少返回值\r\nlet foo = [1, 2, 3].map((num) => {\r\n console.log(num * num);\r\n});" }, "block-scoped-var": { "good": "// good 使用 let 或 const 定义变量，不在 if 中定义变量\nlet bar;\nif (foo) {\n bar = 1;\n}\nconsole.log(bar);", "bad": "// bad if 中定义的 var 在外面被使用了\nif (foo) {\n var bar = 1;\n}\nconsole.log(bar);" }, "complexity": { "good": "// good 单个函数的循环复杂度小于 20\r\nfunction foo() {\r\n let i;\r\n if (i === 1) console.log(i); if (i === 2) console.log(i); if (i === 3) console.log(i); if (i === 4) console.log(i); if (i === 5) console.log(i);\r\n if (i === 6) console.log(i); if (i === 7) console.log(i); if (i === 8) console.log(i); if (i === 9) console.log(i); if (i === 10) console.log(i);\r\n bar(i);\r\n}\r\nfunction bar(i) {\r\n if (i === 11) console.log(i); if (i === 12) console.log(i); if (i === 13) console.log(i); if (i === 14) console.log(i); if (i === 15) console.log(i);\r\n if (i === 16) console.log(i); if (i === 17) console.log(i); if (i === 18) console.log(i); if (i === 19) console.log(i); if (i === 20) console.log(i);\r\n}", "bad": "// bad 循环复杂度超过了 20\r\nfunction foo() {\r\n let i;\r\n if (i === 1) console.log(i); if (i === 2) console.log(i); if (i === 3) console.log(i); if (i === 4) console.log(i); if (i === 5) console.log(i);\r\n if (i === 6) console.log(i); if (i === 7) console.log(i); if (i === 8) console.log(i); if (i === 9) console.log(i); if (i === 10) console.log(i);\r\n if (i === 11) console.log(i); if (i === 12) console.log(i); if (i === 13) console.log(i); if (i === 14) console.log(i); if (i === 15) console.log(i);\r\n if (i === 16) console.log(i); if (i === 17) console.log(i); if (i === 18) console.log(i); if (i === 19) console.log(i); if (i === 20) console.log(i);\r\n}" }, "curly": { "good": "// good if 后有 {\nif (foo) {\n console.log(foo);\n}\n// good 单行 if 可以不要 {}\nif (foo) console.log(foo);", "bad": "// bad if 后没有 {\nif (foo)\n console.log(foo);" }, "dot-location": { "good": "// good 链式调用时，点号放在了行首\nfoo()\n .bar()\n .baz();", "bad": "// bad 链式调用时，点号放在了行尾\nfoo().\n bar().\n baz();" }, "eqeqeq": { "good": "// good 使用了 ===\r\nif (foo === 1) {\r\n console.log('foo is 1');\r\n}\r\n\r\n// good 与 null 比较时，可以使用 == 或 !=\r\nif (foo == null) {\r\n console.log('foo is null or undefined');\r\n}", "bad": "// bad 使用了 ==\r\nif (foo == 1) {\r\n console.log('foo is 1');\r\n}\r\n" }, "for-direction": { "good": "// good for 循环的方向正确\r\nfor (let i = 0; i < 10; i++) {\r\n // do something\r\n}", "bad": "// bad for 循环的方向错误，循环无法结束\r\nfor (let i = 0; i < 10; i--) {\r\n // do something\r\n}" }, "getter-return": { "good": "// good getter 有返回值\nlet user = {\n get name() {\n return 'Alex';\n }\n};\nclass User {\n get name() {\n return this.name;\n }\n}", "bad": "// bad getter 没有返回值，或返回空\nlet user = {\n get name() {\n // 无返回值\n }\n};\nclass User {\n get name() {\n // 返回空\n return;\n }\n}" }, "no-compare-neg-zero": { "good": "// good 不与负零比较，与零比较\nif (foo === 0) {\n // do something\n}", "bad": "// bad 与负零比较\nif (foo === -0) {\n // do something\n}" }, "no-cond-assign": { "good": "// good 在测试表达式中使用 ===\nif (foo === 0) {\n // do something\n}\n\n// good 使用括号将测试表达式中的赋值语句包起来了\nif (bar === (foo = 0)) {\n // do something\n}", "bad": "// bad 测试表达式中使用了赋值语句\n// 这可能是把 === 误写成了 =\nif (foo = 0) {\n // do something\n}" }, "no-confusing-arrow": { "good": "// good 使用圆括号或花括号\r\nlet x = foo => (a ? 1 : 2);\r\nlet y = foo => { return a ? 1 : 2 };", "bad": "// bad 容易混淆的箭头函数和三元表达式\r\nlet x = foo => a ? 1 : 2;" }, "no-constant-condition": { "good": "// good 将常量作为循环条件判断中的测试表达式\nfor (;true;) {\n if (foo === 0) break;\n}\nwhile (true) {\n if (foo === 0) break;\n}", "bad": "// bad 将常量作为分支条件判断中的测试表达式\r\nif (true) {\r\n console.log('true');\r\n}\r\nconst foo = 0 ? 'bar' : 'baz';" }, "no-debugger": { "good": "// good 开发过程中使用到了 debugger，提交代码之前注释掉，或删掉\r\nif (foo) {\r\n // debugger;\r\n}", "bad": "// bad 使用到了 debugger\r\nif (foo) {\r\n debugger;\r\n}" }, "no-dupe-args": { "good": "// good 函数参数的参数名称各不相同\r\nfunction foo(a, b, c) {\r\n // do something\r\n}", "bad": "// bad 函数参数中出现了重复名称的参数\r\nfunction foo(a, b, a) {\r\n // do something\r\n}" }, "no-dupe-keys": { "good": "// good 对象字面量中的键名各不相同\r\nlet foo = {\r\n bar: 1,\r\n baz: 2\r\n};", "bad": "// bad 对象字面量中出现了重复名称的键名\r\nlet foo = {\r\n bar: 1,\r\n bar: 2\r\n};" }, "no-duplicate-case": { "good": "// good switch 语句中的各个 case 的测试表达式均不相同\r\nswitch (foo) {\r\n case 1: break;\r\n case 2: break;\r\n case 3: break;\r\n}", "bad": "// bad switch 语句中出现了重复的测试表达式的 case\r\nswitch (foo) {\r\n case 1: break;\r\n case 2: break;\r\n case 1: break;\r\n}" }, "no-empty": { "good": "// good 空代码块中有注释\r\nif (foo) {\r\n // do something\r\n}", "bad": "// bad 出现了空代码块\r\nif (foo) {\r\n}" }, "no-empty-character-class": { "good": "// good 正则表达式中的字符集不为空\r\nlet reg = /abc[a-z]/;", "bad": "// bad 正则表达式中使用了空的字符集 []\r\nlet reg = /abc[]/;" }, "no-ex-assign": { "good": "// good catch 的第一个参数 error 没有被重新赋值了\r\ntry {\r\n // do something\r\n} catch (e) {\r\n console.error(e);\r\n}", "bad": "// bad catch 的第一个参数 error 被重新赋值了\r\ntry {\r\n // do something\r\n} catch (e) {\r\n e = 10;\r\n}" }, "no-extra-boolean-cast": { "good": "// good 测试表达式中没必要使用 !! 或 Boolean\r\nif (foo) {\r\n // do something\r\n}", "bad": "// bad 在测试表达式中使用了 !!\r\nif (!!foo) {\r\n // do something\r\n}\r\n\r\n// bad 在测试表达式中使用了 Boolean\r\nif (Boolean(foo)) {\r\n // do something\r\n}" }, "no-extra-parens": { "good": "// good 函数表达式中不使用多余的括号\r\nlet foo = function () { return 1 };\r\n\r\n// good 普通的表达式中允许出现多余的括号\r\nlet bar = (a * b) + c;", "bad": "// bad 函数表达式中使用了多余的括号\r\nlet foo = (function () { return <span class=\"token