add ts-node tsconfig.json

Author: Duane Millar Barlow

package.json

@@ -27,7 +27,7 @@
   ],
   "scripts": {
     "test": "yarn test:typecheck & yarn test:lint & yarn test:mocha",
-    "test:mocha": "mkdir -p test/output && mocha --conditions=mocha",
+    "test:mocha": "mkdir -p test/output && mocha --conditions=mocha --files",
     "test:lint": "eslint src test",
     "test:typecheck": "yarn tsc --noEmit",
     "prepublishOnly": "rm -rf dist && rollup -c && tsc",

tsconfig.json

@@ -7,7 +7,6 @@
       "dom"
     ],
     "strict": true,
-    "stripInternal": true,
     "outDir": "dist",
     "allowJs": true,
     "resolveJsonModule": true,
@@ -16,5 +15,6 @@
       "@observablehq/plot": ["./src/index.js"]
     }
   },
+  "ts-node": { "files": true },
   "include": ["src/**/*"]
 }