noFunctionAssign

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.0.0

¥Rule available since: v1.0.0
诊断类别：lint/suspicious/noFunctionAssign

¥Diagnostic Category: lint/suspicious/noFunctionAssign
此规则为推荐规则，默认启用。

¥This rule is recommended, which means is enabled by default.
此规则没有修复方案。

¥This rule doesn’t have a fix.
此规则的默认严重级别为 error。

¥The default severity of this rule is error.
来源：

¥Sources:
- 与 no-func-assign 相同
  
  ¥Same as no-func-assign

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "suspicious": {
5
        "noFunctionAssign": "error"
6
      }
7
    }
8
  }
9
}

描述

¥Description

禁止重新分配函数声明。

¥Disallow reassigning function declarations.

示例

¥Examples

无效

¥Invalid

1
function foo() { };
2
foo = bar;

code-block.js:1:10 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
  > 1 │ function foo() { };
      │          ^^^
    2 │ foo = bar;
    3 │ 
  
  ℹ Reassigned here.
  
    1 │ function foo() { };
  > 2 │ foo = bar;
      │ ^^^
    3 │ 
  
  ℹ Use a local variable instead.

1
function foo() {
2
    foo = bar;
3
 }

code-block.js:1:10 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
  > 1 │ function foo() {
      │          ^^^
    2 │     foo = bar;
    3 │  }
  
  ℹ Reassigned here.
  
    1 │ function foo() {
  > 2 │     foo = bar;
      │     ^^^
    3 │  }
    4 │ 
  
  ℹ Use a local variable instead.

1
foo = bar;
2
function foo() { };

code-block.js:2:10 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
    1 │ foo = bar;
  > 2 │ function foo() { };
      │          ^^^
    3 │ 
  
  ℹ Reassigned here.
  
  > 1 │ foo = bar;
      │ ^^^
    2 │ function foo() { };
    3 │ 
  
  ℹ Reassignment happens here because the function declaration is hoisted.
  
  ℹ Use a local variable instead.

1
[foo] = bar;
2
function foo() { };

code-block.js:2:10 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
    1 │ [foo] = bar;
  > 2 │ function foo() { };
      │          ^^^
    3 │ 
  
  ℹ Reassigned here.
  
  > 1 │ [foo] = bar;
      │  ^^^
    2 │ function foo() { };
    3 │ 
  
  ℹ Reassignment happens here because the function declaration is hoisted.
  
  ℹ Use a local variable instead.

1
({ x: foo = 0 } = bar);
2
function foo() { };

code-block.js:2:10 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
    1 │ ({ x: foo = 0 } = bar);
  > 2 │ function foo() { };
      │          ^^^
    3 │ 
  
  ℹ Reassigned here.
  
  > 1 │ ({ x: foo = 0 } = bar);
      │       ^^^
    2 │ function foo() { };
    3 │ 
  
  ℹ Reassignment happens here because the function declaration is hoisted.
  
  ℹ Use a local variable instead.

1
function foo() {
2
    [foo] = bar;
3
 }

code-block.js:1:10 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
  > 1 │ function foo() {
      │          ^^^
    2 │     [foo] = bar;
    3 │  }
  
  ℹ Reassigned here.
  
    1 │ function foo() {
  > 2 │     [foo] = bar;
      │      ^^^
    3 │  }
    4 │ 
  
  ℹ Use a local variable instead.

1
(function () {
2
    ({ x: foo = 0 } = bar);
3
    function foo() { };
4
 })();

code-block.js:3:14 lint/suspicious/noFunctionAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Do not reassign a function declaration.
  
    1 │ (function () {
    2 │     ({ x: foo = 0 } = bar);
  > 3 │     function foo() { };
      │              ^^^
    4 │  })();
    5 │ 
  
  ℹ Reassigned here.
  
    1 │ (function () {
  > 2 │     ({ x: foo = 0 } = bar);
      │           ^^^
    3 │     function foo() { };
    4 │  })();
  
  ℹ Reassignment happens here because the function declaration is hoisted.
  
  ℹ Use a local variable instead.

有效

¥Valid

1
function foo() {
2
    var foo = bar;
3
 }

1
function foo(foo) {
2
    foo = bar;
3
 }

1
function foo() {
2
    var foo;
3
    foo = bar;
4
 }

1
var foo = () => {};
2
foo = bar;

1
var foo = function() {};
2
foo = bar;

1
var foo = function() {
2
    foo = bar;
3
 };

1
import bar from 'bar';
2
function foo() {
3
    var foo = bar;
4
}

noFunctionAssign

摘要

如何配置

描述

示例

无效

有效

相关链接