Package Exports

eslint-plugin-try-catch-failsafe
eslint-plugin-try-catch-failsafe/lib/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (eslint-plugin-try-catch-failsafe) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

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.

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.

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

Rules

try-catch-failsafe/json-parse

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.

// ❌ 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.

try-catch-failsafe/new-url

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.

// ❌ 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.