Prevent logging from clashing with debug module. (#148)

* Prevent logging from clashing with `debug` module.

The current implementation clashes with https://www.npmjs.com/package/debug causing unexpected terminal output when a user may have been specifying a pattern intended for the `debug` module.

`debug` has nearly 75 million download per month, so quite lot of people could hit this.

* Specify DEBUG=json2ts to avoid clashing with debug module

* Revert "Prevent logging from clashing with `debug` module."

This reverts commit 1f00910.

* Revert "Specify DEBUG=json2ts to avoid clashing with debug module"

This reverts commit 5955f14.

* process.env.DEBUG -> process.env.VERBOSE

Changed usage of process.env.DEBUG to instead reference process.env.VERBOSE to avoid clashing with `debug` module.

CONTRIBUTING.md

@@ -5,7 +5,7 @@
 ## Tips
 
 - Use `npm run tdd` to compile and re-run tests when a file is modified
-- Use `DEBUG=true npm run tdd` to add logging output to the above command
+- Use `VERBOSE=true npm run tdd` to add logging output to the above command
 - Add `export let only=true` to a test in test/e2e to just run that test
 - Add `export let exclude=true` to a test in test/e2e to not run that test
 - To debug a test, with breakpoints:

src/utils.ts

@@ -77,7 +77,7 @@ export function error(...messages: any[]) {
 }
 
 export function log(...messages: any[]) {
-  if (process.env.DEBUG) {
+  if (process.env.VERBOSE) {
     console.info(whiteBright.bgCyan('debug'), ...messages)
   }
 }