ESLint comes with support to require or disallow trailing commas. This option is also known as “comma-dangle”. Trailing commas are supported in JavaScript by ECMAScript v5. Here’s a simple example: const futurestudio = { team: ['Marcus', 'Norman', 'Christian'], } The comma after team: ['Marcus', 'Norman', 'Christian'], is a trailing comma. This tutorial …

JavaScript supports the BigInt data type representing whole numbers larger than the Integer rage (2^53 - 1). An app of ours has database tables using a BigInt number for primary keys. ESLint showed an issue that “BigInt is not defined” while mapping the primary key values from the database …

NPM is a powerful package manager. It supports a scripts property in the package.json file. These scripts allow you to run commands for the current project. A typical command is to run the test suite for the project. You can also combine scripts or add CLI flags to individual …