¿Es posible anular quétsconfig.json ts-node utiliza cuando se llama desde mocha?

Mi principaltsconfig.json contiene"module": "es2015", pero quiero usar"module": "commonjs" solo para ts-node.

Probé esto

mocha --compilers ts:ts-node/register,tsx:ts-node/register \
    --compilerOptions '{"module":"commonjs"}' \
    --require ts-node/register test/**/*.spec.ts*

Pero no funcionó:

SyntaxError: Unexpected token import
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:387:25)
    at Module.m._compile (/usr/lib/node_modules/ts-node/src/index.ts:406:23)
    at Module._extensions..js (module.js:422:10)
    at Object.require.extensions.(anonymous function) [as .tsx] (/usr/lib/node_modules/ts-node/src/index.ts:409:12)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Module.require (module.js:367:17)
    at require (internal/module.js:16:19)
    at /usr/lib/node_modules/mocha/lib/mocha.js:222:27
    at Array.forEach (native)
    at Mocha.loadFiles (/usr/lib/node_modules/mocha/lib/mocha.js:219:14)
    at Mocha.run (/usr/lib/node_modules/mocha/lib/mocha.js:487:10)
    at Object.<anonymous> (/usr/lib/node_modules/mocha/bin/_mocha:458:18)
    at Module._compile (module.js:413:34)
    at Object.Module._extensions..js (module.js:422:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Function.Module.runMain (module.js:447:10)
    at startup (node.js:146:18)
    at node.js:404:3