非常教程

Eslint参考手册

规则 | Rules

no-throw-literal

它被认为是良好的做法是只throwError对象本身或使用对象Error物,作为用户定义的异常基础对象。Error对象的根本好处是他们会自动跟踪他们的构建和起源。

此规则限制可以作为例外抛出的内容。当它刚刚创建时,它只会阻止文字被引发(因此也就是名称),但现在它已经扩展为只允许有可能成为Error对象的表达式。

规则细节

该规则旨在通过不允许抛出不可能是Error对象的文字和其他表达式来抛出异常时保持一致性。

此规则的错误代码示例:

/*eslint no-throw-literal: "error"*/
/*eslint-env es6*/

throw "error";

throw 0;

throw undefined;

throw null;

var err = new Error();
throw "an " + err;
// err is recast to a string literal

var err = new Error();
throw `${err}`

此规则的正确代码示例:

/*eslint no-throw-literal: "error"*/

throw new Error();

throw new Error("error");

var e = new Error("error");
throw e;

try {
    throw new Error("error");
} catch (e) {
    throw e;
}

已知限制

由于静态分析的限制,这个规则不能保证你只会抛出Error对象。

此规则的正确代码示例,但不会抛出Error对象:

/*eslint no-throw-literal: "error"*/

var err = "error";
throw err;

function foo(bar) {
    console.log(bar);
}
throw foo("error");

throw new String("error");

var foo = {
    bar: "error"
};
throw foo.bar;

版本

该规则在 ESLint 0.15.0 中引入。

资源

  • Rule source
  • Documentation source

规则 | Rules相关

1.accessor-pairs
2.array-bracket-newline
3.array-bracket-spacing
4.array-callback-return
5.array-element-newline
6.arrow-body-style
7.arrow-parens
8.arrow-spacing
9.block-scoped-var
10.block-spacing
11.brace-style
12.callback-return
13.camelcase
14.capitalized-comments
15.class-methods-use-this
16.comma-dangle
17.comma-spacing
18.comma-style
19.complexity
20.computed-property-spacing
21.consistent-return
22.consistent-this
23.constructor-super
24.curly
25.default-case
26.dot-location
27.dot-notation
28.eol-last
29.eqeqeq
30.for-direction
31.func-call-spacing
32.func-name-matching
33.func-names
34.func-style
35.function-paren-newline
36.generator-star
37.generator-star-spacing
38.getter-return
39.global-require
40.global-strict
41.guard-for-in
42.handle-callback-err
43.id-blacklist
44.id-length
45.id-match
46.implicit-arrow-linebreak
47.indent
48.indent-legacy
49.init-declarations
50.jsx-quotes
51.key-spacing
52.keyword-spacing
53.line-comment-position
54.linebreak-style
55.lines-around-comment
56.lines-around-directive
57.lines-between-class-members
58.max-depth
59.max-len
60.max-lines
61.max-nested-callbacks
62.max-params
63.max-statements
64.max-statements-per-line
65.multiline-comment-style
66.multiline-ternary
67.new-cap
68.new-parens
69.newline-after-var
70.newline-before-return
71.newline-per-chained-call
72.no-alert
73.no-array-constructor
74.no-arrow-condition
75.no-await-in-loop
76.no-bitwise
77.no-buffer-constructor
78.no-caller
79.no-case-declarations
80.no-catch-shadow
81.no-class-assign
82.no-comma-dangle
83.no-compare-neg-zero
84.no-cond-assign
85.no-confusing-arrow
86.no-console
87.no-const-assign
88.no-constant-condition
89.no-continue
90.no-control-regex
91.no-debugger
92.no-delete-var
93.no-div-regex
94.no-dupe-args
95.no-dupe-class-members
96.no-dupe-keys
97.no-duplicate-case
98.no-duplicate-imports
99.no-else-return
100.no-empty
Eslint

ESLint 是一个代码规范和错误检查工具,有以下几个特性。所有东西都是可以插拔的。你可以调用任意的 rule api 或者 formatter api 去打包或者定义 rule or formatter。任意的 rule 都是独立的。没有特定的 coding style,你可以自己配置。

主页 https://eslint.org/
源码 https://github.com/eslint/eslint
发布版本 4.12.0

Eslint目录

1.指南 | Guide
2.规则 | Rules