An error has occurred with mocha and ts-node unable to locate the local .d.ts file

This is the structure of my project:

|_typetests
|          |_type.test.ts
|
|
myproj.d.ts
tsconfig.json

Here is how my tsconfig.json file is configured:

{
  "compilerOptions": {
      "module": "commonjs",
      "moduleResolution": "node",
      "lib": [
          "es6"
      ],
      "target": "es6",
      "noImplicitAny": true,
      "noImplicitThis": true,
      "strictNullChecks": true,
      "types": [
          "node",
          "mocha"
      ],
      "noEmit": true,
      "forceConsistentCasingInFileNames": true,
      "baseUrl": "./"
  },
  "include": [
      "types/*.test.ts"
  ],
  "exclude": ["node_modules"]
}

Running

./node_modules/.bin/tsc -p . --traceResolution

Shows the successful resolution of module name 'myproj' to '/Users/paulcowan/projects/myproj/myproj.d.ts'

However, when I run this command using mocha:

./node_modules/.bin/mocha -r ts-node/register types/*.test.ts

I encounter the following error:

Error: Cannot find module 'myproj'

Answer №1

If you're facing a problem, consider utilizing the --files flag as a potential solution.

Alternatively, you can establish the TS_NODE_FILES environment variable to true and attempt your task again.

TS_NODE_FILES=true ./node_modules/.bin/mocha -r ts-node/register types/*.test.ts

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