ts-node by default does not respect the `files` setting in `tsconfig.json`
and therefore does not respect the d.ts file under `types/`.
This commit adds an explicit `typeRoots` option, as recommended by
https://github.com/TypeStrong/ts-node#help-my-types-are-missingFixes#989
Signed-off-by: Philip Molares <philip.molares@udo.edu>
TypeScript considers null and undefined as fine for all variable by
default. This patch enables `strictNullChecks`, which should cause
errors to be thrown as soon as a variable is null or undefined without
having it explicitly decleared for itself.[1]
[1]: https://www.typescriptlang.org/docs/handbook/migrating-from-javascript.html#strict-null--undefined-checks
Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
