[ERR_IMPORT_ASSERTION_TYPE_MISSING]: Module "[...]/tsconfig.json" needs an import assertion of type "json"

[kran6a]

I am getting this error on node 17.9.0 when using tsconfig-paths from mocha through ts-node.

mocha command: mocha -n experimental-specifier-resolution=node -n loader=ts-node/esm --serial -p tsconfig.json --spec ./test/**/*.spec.ts

tsconfig.json:

{
	"extends": "./.svelte-kit/tsconfig.json",
	"compilerOptions": {
		"baseUrl": ".",
		"rootDir": ".",
		"module": "ESNext",
		"target": "ESNext",
		"lib": ["ESNext"],
		"typeRoots" : ["./node_modules/@types", "./src"],
		"sourceMap": true,
		"resolveJsonModule": true,
		"alwaysStrict": true
	},
	"typeAcquisition": {
		"enable": true
	},
	"ts-node": {
		"require": ["tsconfig-paths/register"],
		"compilerOptions": {
			"resolveJsonModule": true
		}
	},
	"paths": {
		"$src/*": ["src/*"],
		"$lib/*": ["src/lib/*"],
		"$api/*": ["src/routes/api/*"],
		"$app/*": [".svelte-kit/runtime/app/*"]
	}
}

Unfortunately no stack trace is shown so I don't know where the failing import is taking place but is should be as easy to fix as adding assert { type: 'json' } after the import like import tsconfig from './tsconfig.json' assert { type: 'json' };.