Effect CommunityEC
Effect Community•9mo ago•
12 replies
Ruby ✧

Effect.Schema does not provide type assistance in Effect.flatMap

I am new to Effect and to Effect's schema, so I would be very grateful if you could explain why the Effect schema does not provide type assistance here.

Here is my schema:
export const getNodeSchema = Schema.Struct({
  id: PRIMITIVES.nodeId,
  ownerId: PRIMITIVES.nodeId,
  docType: PRIMITIVES.docType,
  createdAt: PRIMITIVES.timestamp,
  modifiedAt: PRIMITIVES.timestamp
})
export type GetNodeData = typeof getNodeSchema.Type


I use it like this:
Effect.flatMap(Repository, (repository) => {
    const node = repository.getNode("testNodeId")
    return node // My IDE shows type here Effect.Effect<GetNodeData, never, never>
}).pipe(
    Effect.andThen((node) => { // Here type is any
    expect(node).toBeTruthy(); 
}));

If I annotate function here, than everything works:
Effect.flatMap(Repository, (repository): Effect.Effect<GetNodeData, never, never>  => {


I don't understand what is the problem, here are my tsconfigs:
tsconfig.json
{
  "extends": "../../tsconfig.settings.json",
  "compilerOptions": {
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
    "composite": true,
    "baseUrl": ".",
    "paths": {
      "@/*": ["src/*"]
    }
  }
}


tsconfig.settings.json
{
  "compilerOptions": {
    "target": "ES2020",
    "useDefineForClassFields": true,
    "lib": ["ES2020", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "skipLibCheck": true,

    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "isolatedModules": true,
    "moduleDetection": "force",
    "noEmit": true,
    "jsx": "react-jsx",

    "strict": true,
    "noUnusedLocals": true,
    "strictNullChecks": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedSideEffectImports": true,
    "noImplicitAny": true,
    "allowUmdGlobalAccess": true,
    "exactOptionalPropertyTypes": true
  }
}
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