reset mime-types

[dotnetCarpenter]

I'm writing unit tests for ecstatic's new custom mime-type feature and can't do a proper teardown between tests due to a number of reasons. But the main one, that stops me right now, is that mime doesn't have a reset-mime-types function.

I can do mime = new mime.Mime(); but that doesn't load the default types.

// Define built-in types
mime.define(require('./types.json'));

// Default type
mime.default_type = mime.lookup('bin');

Could you add a reset-mime-types function, please?

[Hypercubed]

Can be solved by #129

[dotnetCarpenter]

@Hypercubed you mean I should use https://github.com/Hypercubed/node-mime?

[Hypercubed]

Your use case (feel free to correct me) is that you would like an mime lookup instance that includes the default types, expand the default types using mime.define, then later be able to create a new instance with only the default types not your additional defintions.

The main node-mime fork has two options:

1. Use the default instance using var mime = require('mime').
2. Create a new instance var mime = new require('mime').Mime() that does not include the default mime types.

This is an all or noting approach. # 1 includes the default types but since this is a singleton and addition definitions are global and cannot be reset. # 2 is a instance that you can expand with your types, destroy when done, then create a new instance. However, this instance lacks the default types.

My suggestion in https://github.com/Hypercubed/node-mime is to separate the db from the API. So you can do this:

var MimeLookup = require('mime-lookup');                           // load the class constructor
var mime = new MimeLookup (require('mime-db'));             // load the default types.

Teardown between tests would mean creating a new instance. I will likely make my version of node-mime a separate module (perhaps mime-lookup) but I am waiting for feedback from @broofa .

[broofa]

I know it's been a while, my apologies. I like this idea for v2. I'll figure something out for v2.

[broofa]

v2 is out. index.js shows how to build the default mime object. Should be pretty straight-forward to address this in your tests.

Edit: See comment below

[broofa]

My apologies. index.js is misleading as it's using local paths to the types files. To create your own fresh mime instance with all of the type definitions:

const Mime = require('mime/Mime');
const mime = new Mime(require('mime/types/standard'), require('mime/types/other'));

[perrosen]

Just a note for anyone else coming across this issue. I needed to add the .json extension for webpack to find the types.