eslint-plugin-try-catch-failsafe

Make sure to use try-catch to wrap up some dangerous actions!

Installation

Use package manager to install this plugin.

``bash
npm install --save-dev eslint-plugin-try-catch-failsafe
yarn add -D eslint-plugin-try-catch-failsafe
pnpm add -D eslint-plugin-try-catch-failsafe
`

Usage

Add this plugin to your ESLint configuration.

`json
{
"extends": [
"plugin:try-catch-failsafe/default"
]
}
`

Rules

$3

- Default: error
- Fixable: false

Make sure to use try-catch to wrap up JSON.parse. Notice that the JSON.parse in catch or finally block may also throw an error in JavaScript, so we should wrap them up too.

`js
// ❌ Error
JSON.parse('{"foo": "bar"}');

// ❌ Error
try {
// some code that may throw an error
} catch (e) {
JSON.parse('{"foo": "bar"}');
}

// ❌ Error
try {
// some code that may throw an error
} finally {
JSON.parse('{"foo": "bar"}');
}

// ✅ OK
try {
JSON.parse('{"foo": "bar"}');
} catch (e) {
console.error(e);
}

// ✅ OK
try {
// some code that may throw an error
} finally {
try {
JSON.parse('{"foo": "bar"}');
} finally {}
}
`

If you are confident that the JSON.parse will not throw an error, you can disable this rule.

$3

- Default: error
- Fixable: false

Make sure to use try-catch to wrap up new URL(). Notice that the new URL() in catch or finally block may also throw an error in JavaScript, so we should wrap them up too.

`js
// ❌ Error
new URL('');

// ❌ Error
try {
// some code that may throw an error
} catch (e) {
new URL('');
}

// ❌ Error
try {
// some code that may throw an error
} finally {
new URL('');
}

// ✅ OK
try {
new URL('');
} catch (e) {
console.error(e);
}

// ✅ OK
try {
// some code that may throw an error
} finally {
try {
new URL('');
} finally {}
}
`

If you are confident that the new URL()` will not throw an error, you can disable this rule.