How to use with mocha & ts-node/register?

[bradennapier]

Hey! Thanks for the work on this.

Wondering how we can use this with mocha? tsconfig-paths has its own tsconfig-paths/register to make this work

https://github.com/dividab/tsconfig-paths#with-mocha-and-ts-node

Basically with mocha we have to run mocha -r ts-node/register -- but that wouldnt have the compiler flag.

Would be worthwhile to have the ability to do it which looks like it'd prob just be something like:

// This is the same as ts-node/register except it sets the environment
// variable so that it uses the ttypescript compiler.  This variable
// could just be set in scripts but this convention makes it simpler.
process.env.TS_NODE_COMPILER = 'ttypescript';
// eslint-disable-next-line import/no-extraneous-dependencies
require('ts-node').register();

[cevek]

register from ts-node has options

require('ts-node').register({
    compiler: 'ttypescript'
})

[bradennapier]

I think the point I was making is that it would be nice to have a ttypescript/register or something similar - most have such an options such as ts-node/register or babel-node/register so that we can do this without having to use the programmatic api (which we could just use transformers at that point ;-)

[cevek]

Good point. PR welcome :)

[millsp]

TypeStrong/ts-node#4