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docs: rewrite examples with var using let and const #19398

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Feb 3, 2025
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docs: rewrite examples with var using let and const #19398

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12 changes: 6 additions & 6 deletions docs/src/rules/init-declarations.md
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Expand Up @@ -7,8 +7,8 @@ rule_type: suggestion
In JavaScript, variables can be assigned during declaration, or at any point afterwards using an assignment statement. For example, in the following code, `foo` is initialized during declaration, while `bar` is initialized later.

```js
var foo = 1;
var bar;
let foo = 1;
let bar;

if (foo) {
bar = 1;
Expand All @@ -22,8 +22,8 @@ if (foo) {
This rule is aimed at enforcing or eliminating variable initializations during declaration. For example, in the following code, `foo` is initialized during declaration, while `bar` is not.

```js
var foo = 1;
var bar;
let foo = 1;
let bar;

bar = 2;
```
Expand Down Expand Up @@ -109,7 +109,7 @@ function foo() {
var bar = 1;
let baz = 2;

for (var i = 0; i < 1; i++) {}
for (let i = 0; i < 1; i++) {}
}
```

Expand Down Expand Up @@ -141,7 +141,7 @@ Examples of **correct** code for the `"never", { "ignoreForLoopInit": true }` op

```js
/*eslint init-declarations: ["error", "never", { "ignoreForLoopInit": true }]*/
for (var i = 0; i < 1; i++) {}
for (let i = 0; i < 1; i++) {}
```

:::
Expand Down
36 changes: 18 additions & 18 deletions docs/src/rules/no-empty-function.md
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Expand Up @@ -37,15 +37,15 @@ Examples of **incorrect** code for this rule:

function foo() {}

var bar = function() {};
const bar = function() {};

var bar = () => {};
const bar1 = () => {};

function* baz() {}

var bar = function*() {};
const bar2 = function*() {};

var obj = {
const obj = {
foo: function() {},

foo: function*() {},
Expand Down Expand Up @@ -93,23 +93,23 @@ function foo() {
// do nothing.
}

var baz = function() {
const baz = function() {
// any clear comments.
};

var baz = () => {
const baz1 = () => {
bar();
};

function* foobar() {
// do nothing.
}

var baz = function*() {
const baz2 = function*() {
// do nothing.
};

var obj = {
const obj = {
foo: function() {
// do nothing.
},
Expand Down Expand Up @@ -203,9 +203,9 @@ Examples of **correct** code for the `{ "allow": ["functions"] }` option:

function foo() {}

var bar = function() {};
const bar = function() {};

var obj = {
const obj = {
foo: function() {}
};
```
Expand All @@ -221,7 +221,7 @@ Examples of **correct** code for the `{ "allow": ["arrowFunctions"] }` option:
```js
/*eslint no-empty-function: ["error", { "allow": ["arrowFunctions"] }]*/

var foo = () => {};
const foo = () => {};
```

:::
Expand All @@ -237,9 +237,9 @@ Examples of **correct** code for the `{ "allow": ["generatorFunctions"] }` optio

function* foo() {}

var bar = function*() {};
const bar = function*() {};

var obj = {
const obj = {
foo: function*() {}
};
```
Expand All @@ -255,7 +255,7 @@ Examples of **correct** code for the `{ "allow": ["methods"] }` option:
```js
/*eslint no-empty-function: ["error", { "allow": ["methods"] }]*/

var obj = {
const obj = {
foo() {}
};

Expand All @@ -276,7 +276,7 @@ Examples of **correct** code for the `{ "allow": ["generatorMethods"] }` option:
```js
/*eslint no-empty-function: ["error", { "allow": ["generatorMethods"] }]*/

var obj = {
const obj = {
*foo() {}
};

Expand All @@ -297,7 +297,7 @@ Examples of **correct** code for the `{ "allow": ["getters"] }` option:
```js
/*eslint no-empty-function: ["error", { "allow": ["getters"] }]*/

var obj = {
const obj = {
get foo() {}
};

Expand All @@ -318,7 +318,7 @@ Examples of **correct** code for the `{ "allow": ["setters"] }` option:
```js
/*eslint no-empty-function: ["error", { "allow": ["setters"] }]*/

var obj = {
const obj = {
set foo(value) {}
};

Expand Down Expand Up @@ -369,7 +369,7 @@ Examples of **correct** code for the `{ "allow": ["asyncMethods"] }` options:
```js
/*eslint no-empty-function: ["error", { "allow": ["asyncMethods"] }]*/

var obj = {
const obj = {
async foo() {}
};

Expand Down
22 changes: 11 additions & 11 deletions docs/src/rules/no-extra-boolean-cast.md
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Expand Up @@ -30,13 +30,13 @@ Examples of **incorrect** code for this rule:
```js
/*eslint no-extra-boolean-cast: "error"*/

var foo = !!!bar;
const foo = !!!bar;

var foo = !!bar ? baz : bat;
const foo1 = !!bar ? baz : bat;

var foo = Boolean(!!bar);
const foo2 = Boolean(!!bar);

var foo = new Boolean(!!bar);
const foo3 = new Boolean(!!bar);

if (!!foo) {
// ...
Expand Down Expand Up @@ -68,14 +68,14 @@ Examples of **correct** code for this rule:
```js
/*eslint no-extra-boolean-cast: "error"*/

var foo = !!bar;
var foo = Boolean(bar);
const foo = !!bar;
const foo1 = Boolean(bar);

function qux() {
return !!bar;
}

var foo = bar ? !!baz : !!bat;
foo = bar ? !!baz : !!bat;
```

:::
Expand Down Expand Up @@ -109,7 +109,7 @@ if ((!!foo || bar) && !!baz) {
//...
}

var foo = new Boolean(!!bar || baz);
const foo = new Boolean(!!bar || baz);

foo && Boolean(bar) ? baz : bat;

Expand All @@ -134,9 +134,9 @@ Examples of **correct** code for this rule with `"enforceForInnerExpressions"` o
```js
/*eslint no-extra-boolean-cast: ["error", {"enforceForInnerExpressions": true}]*/

// Note that `||` and `&&` alone aren't a boolean context for either operand
// Note that `||` and `&&` alone aren't a boolean context for either operand
// since the resultant value need not be a boolean without casting.
var foo = !!bar || baz;
const foo = !!bar || baz;

if (foo || bar) {
//...
Expand All @@ -150,7 +150,7 @@ if ((foo || bar) && baz) {
//...
}

var foo = new Boolean(bar || baz);
const foo1 = new Boolean(bar || baz);

foo && bar ? baz : bat;

Expand Down
4 changes: 2 additions & 2 deletions docs/src/rules/no-restricted-properties.md
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Expand Up @@ -81,7 +81,7 @@ Examples of **incorrect** code for this rule:
"property": "disallowedPropertyName"
}] */

var example = disallowedObjectName.disallowedPropertyName; /*error Disallowed object property: disallowedObjectName.disallowedPropertyName.*/
const example = disallowedObjectName.disallowedPropertyName; /*error Disallowed object property: disallowedObjectName.disallowedPropertyName.*/

disallowedObjectName.disallowedPropertyName(); /*error Disallowed object property: disallowedObjectName.disallowedPropertyName.*/
```
Expand Down Expand Up @@ -126,7 +126,7 @@ Examples of **correct** code for this rule:
"property": "disallowedPropertyName"
}] */

var example = disallowedObjectName.somePropertyName;
const example = disallowedObjectName.somePropertyName;

allowedObjectName.disallowedPropertyName();
```
Expand Down
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