What does npm mean by ‘Skipping failed optional dependency’?

This is not an error. It is a warning that fseventsd, which is Mac OS specific, cannot be installed on Linux. There is no need to be alarmed, and the package that needs fsevents will still work – that’s why it’s an optional dependency. Since many people are confused about this (particularly since this used … Read more

What is the difference between then and finally in a promise?

First difference: Sometimes you don’t want to catch errors at the place they arise, but in the code that uses this function, so you don’t catch them. In that case you can’t substitute then() and finally(). Sometimes you have to clean something up whether there was an error or not (nulling references, clearing timeouts … … Read more

Why is Node.js required for Angular?

Angular does not need Node.js directly and it is not mandatory to use Node.js. But you will need Node.js for all the build and development tools. For an example these are few reasons that you need Node.js for building an Angular app, npm (node package manager) comes with Node.js by default and it allows you … Read more

How do you run eslint for only a specific rule or set of rules – command line only

I don’t know if this is the best way, but I was able to get this working: $ eslint helpme.js –no-eslintrc –env “es6” –env “node” –parser-options “{ecmaVersion: 2018}” –rule “{some-important-rule: error}” Note: With this method (ignoring .eslintrc completeley) you still have to add some stuff from .eslintrc like your environment and parser options.

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