I have a module A that gets imported by a module B. Module B has the following tsconfig.json:
{
"compilerOptions": {
"strict": true,
"module": "esnext",
"moduleResolution": "bundler",
}
}
If I try to import module A with this config, I get the following error:
Could not find a declaration file for module 'moduleA'. 'node_modules/moduleA/index.mjs' implicitly has an 'any' type.
There are types at 'node_modules/moduleA/index.d.ts', but this result could not be resolved when respecting package.json "exports". The 'moduleA' library may need to update its package.json or typings.
If I change moduleResolution to "node" however, everything works fine. This is the package.json of module A:
{
"name": "ModuleA",
"version": "1.0.0",
"main": "index.mjs",
"module": "index.mjs",
"types": "index.d.ts",
"type": "module",
"files": [
"index.cjs",
"index.mjs",
"index.d.ts"
],
"exports": {
".": {
"import": {
"types": "./index.d.ts",
"default": "./index.mjs"
},
"require": {
"types": "./index.d.ts",
"default": "./index.cjs"
}
}
},
"engines": {
"node": ">=18.0.0"
},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
}
}
I've checked that all the files that package.json exist and are in the right path and they are. I tried to look up documentation around the "bundler" mode, but could not find much as this is a new feature. Anyone know what might be causing this?
Also in case it might be relevant, this is the format of the index.d.ts in module A:
type A = {
someField: someType;
...
};
type B = {
someOtherField: someType;
...
};
// More types here
export {
A, B, // More types
};